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  • 1
    Call number: AWI A11-16-90009
    In: Forschungsbericht / Deutsches Zentrum für Luft- und Raumfahrt ; 2016-01, 2016-01
    Description / Table of Contents: Recent climate model simulations indicated that sulfate (SO4) formed from ship emissions may be one of the major contributors to the negative anthropogenic aerosol radiative forcing. Due to increasingly stringent regulations on the maximum sulfur content of ship fuels this contribution is expected to decrease strongly in the future. Possibly, nitrate (NO3) formation will compensate for part of the reduction, but measurements indicate that it may be crucial to include coarse mode particle interactions with condensable trace gases in order to quantify this effect. However, none of the aerosol (sub)models previously used for such assessments accounted for the coarse mode particle effects. This provided the motivation to extend one of those submodels, namely MADE, in the present work. The new submodel, MADE3, is based on the second generation of MADE, called MADE-in. It includes nine lognormal modes to represent three size ranges with three types of aerosol particles each. The associated increase in complexity w.r.t. to MADE and MADE-in required a complete revision of the code and careful reexamination of the underlying physical assumptions, as only the fine modes had been considered in the gas–particle interactions in the predecessor submodels. The main new features of MADE3 are the ability of coarse mode particles to take up condensing vapors and to coagulate with fine mode particles, and the gas–particle partitioning of chlorine, which is mainly contained in sea spray (SS) particles. In order to test the algorithms used in the new submodel it was run in a box model setup and the results were compared to those obtained in an analogous setup with the much more detailed, particle-resolved aerosol model PartMC-MOSAIC. The comparison was performed for an idealized marine boundary layer test case and showed improved performance of MADE3 over MADE in the representation of coarse mode particles and total aerosol composition. Subsequently, MADE3 was implemented into the atmospheric chemistry general circulation model EMAC. Due to the new mode structure this required extensive adaptations to other submodels, specifically to the one used for cloud and precipitation processing of aerosol particles. EMAC does not track interstitial aerosol particles separately from those immersed in cloud droplets, ice crystals, or precipitation. Hence, a sophisticated scheme was devised and implemented for the assignment of the in-cloud or in-precipitation aerosol to one of four possible modes, instead of just one possible mode in the MADE case. The coupled model, EMAC with MADE3, was thoroughly evaluated by comparison of simulation output to station network measurements of near-surface aerosol component mass concentrations, to airborne measurements of vertical aerosol mass mixing ratio and number concentration profiles, to ground-based and airborne measurements of particle size distributions, and to station network and satellite measurements of aerosol optical depth. Satisfactory agreement with the observations was obtained and it was thus shown that MADE3 is ready for application within EMAC. The results from an identically designed simulation with the predecessor submodel MADE led to the conclusion that a fraction of the secondary aerosol species partitions to the coarse modes in MADE3 and is thus removed more quickly from the atmosphere. Furthermore, a new evaluation method was developed, which allows for comparison of model output to size-resolved electron microscopy measurements of particle composition. Both submodels, MADE3 and MADE, were finally used in EMAC simulations of the effect of ship emissions on the atmospheric aerosol. As in previous studies for year 2000 conditions, SO4 was found to be the dominant species in the fine modes in this context. In contrast to SO4, the major fraction of ship emissions-induced near-surface NO3 was found to partition to the coarse modes in the MADE3 simulations. A similar amount of fine mode NO3 as in the present and former MADE simulations was also formed. Hence, fine mode particle growth due to ship emissions was also similar, and was reduced in idealized simulations of a future low-sulfur fuel scenario. Particle volume concentration decreased by about 1 % due to ship emissions in the MADE3 simulations, but not in the MADE simulations. This finding was independent of the fuel sulfur content. In summary, the inclusion of coarse mode particle interactions and the gas–particle partitioning of chlorine could alter prior conclusions on the climate effect of ship emissions-induced aerosol perturbations, mainly due to the differences in NO3 formation. This climate effect will be re-quantified in a follow-up study by coupling the MADE3 aerosol to a two-moment cloud microphysics scheme. Further planned applications of the new submodel include the quantification of climate effects of aerosol perturbations via their influence on ice clouds as well as simulations with boundary conditions specific to measurement campaigns. Results from the latter may lead to further model improvements and can also provide guidance for the interpretation of measurement results.
    Type of Medium: Dissertations
    Pages: xiv, 170 Seiten , 42 Illustrationen und Diagramme
    Edition: Als Manuskript gedruckt
    Series Statement: Forschungsbericht / DLR, Deutsches Zentrum für Luft- und Raumfahrt 2016-01
    Language: English
    Note: Contents: Abstract. - Kurzfassung. - 1 Introduction. - 1.1 Motivation. - 1.2 Scientific questions. - 1.3 Method. - 2 Background and state of the science. - 2.1 The atmospheric aerosol. - 2.1.1 Relevance. - 2.1.2 Aerosol processes. - 2.1.3 Aerosol properties. - 2.2 The influence of ship emissions. - 2.3 Aerosol modeling. - 2.3.1 Selected results. - 2.3.2 Motivation to expand on previous work. - 2.3.3 The computational approach. - 2.3.4 Existing aerosol microphysics submodels. - 2.3.5 MADE3 as a successor of MADE and MADE-in. - 3 The aerosol submodel MADE3. - 3.1 Aerosol characteristics. - 3.1.1 Modes. - 3.1.2 Species. - 3.1.3 Mathematical representation of aerosol characteristics. - 3.2 Aerosol processes. - 3.2.1 Gas–particle partitioning. - 3.2.2 Condensation of H2SO4 and organic vapors. - 3.2.3 New particle formation. - 3.2.4 Coagulation. - 3.2.5 Renaming. - 3.2.6 Aging of insoluble particles. - 4 Box model tests. - 4.1 Model description: MADE vs. MADE3. - 4.2 Model description: PartMC-MOSAIC. - 4.3 Test case scenario. - 4.4 Results: MADE3 vs. MADE. - 4.4.1 Size distributions. - 4.4.2 Composition. - 4.5 Results: MADE3 vs. PartMC-MOSAIC. - 4.5.1 Size distributions. - 4.5.2 Composition. - 4.6 Summary and conclusions. - 5 MADE3 in the atmospheric chemistry general circulation model EMAC. - 5.1 Basic settings. - 5.2 Emissions. - 5.3 Transport. - 5.4 Gas phase chemistry. - 5.5 Cloud formation. - 5.5.1 Stratiform clouds. - 5.5.2 Convective clouds. - 5.6 Cloud and precipitation processing of the aerosol. - 5.7 Wet deposition. - 5.8 Dry deposition. - 5.9 Sedimentation. - 5.10 Optical properties. - 6 Evaluation of simulated tropospheric aerosol properties. - 6.1 Data comparability. - 6.2 The MADE3 aerosol within EMAC. - 6.2.1 Near-surface mass concentrations. - 6.2.2 Vertical distributions. - 6.2.3 Size distributions. - 6.2.4 Aerosol optical depth. - 6.2.5 Global tropospheric burdens and residence times. - 6.2.6 Summary and conclusions. - 6.3 Comparison to MADE. - 6.4 New features of MADE3. - 7 Effects of oceanic ship emissions on atmospheric aerosol particles. - 7.1 Effects of year 2000 emissions. - 7.1.1 Near-surface concentrations. - 7.1.2 Near-surface size distributions. - 7.1.3 Tropospheric burdens. - 7.2 Effects of an idealized fuel sulfur content reduction. - 7.3 Summary and conclusions. - 8 Summary, conclusions, and outlook. - Appendix. - A.1 Particle evolution in the box model study. - A.2 Gas phase chemical mechanism. - A.3 Liquid phase chemical mechanism. - A.4 Mode assignment of cloud residual aerosol. - A.4.1 Terminology. - A.4.2 Basic assumptions. - A.4.3 Algorithm for residual assignment. - A.5 Year 2000 aerosol in EMAC with MADE3. - A.6 Near-surface mass concentration evaluation. - References. - Acronyms, symbols, and species names. - Acronyms. - Symbols. - Tracers and chemical species. - Danksagung.
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  • 2
    Call number: AWI G5-17-90632
    In: Developments in paleoenvironmental research, 20
    Description / Table of Contents: The aim of this edited volume is to introduce the scientific community to paleoenvironmental studies of estuaries, to highlight the types of information that can be obtained from such studies, and to promote the use of paleoenvironmental studies in estuarine management. Readers will learn about the the application of different paleoecological approaches used in estuaries that develop our understanding of their response to natural and human influences. Particular attention is given to the essential steps required for undertaking a paleoecological study, in particular with regard to site selection, core extraction and chronological techniques, followed by the range of indicators that can be used. A series of case studies are discussed in the book to demonstrate how paleoecological studies can be used to address key questions, and to sustainably manage these important coastal environments in the future. This book will appeal to professional scientists interested in estuarine studies and/or paleoenvironmental research, as well as estuarine managers who are interested in the incorporation of paleoenvironmental research into their management programs.
    Type of Medium: Monograph available for loan
    Pages: ix, 700 Seiten , Illustrationen
    ISBN: 978-94-024-0988-8
    Series Statement: Developments in paleoenvironmental research 20
    Language: English
    Note: Contents: 1 Introduction to the Application of Paleoecological Techniques in Estuaries / Kathryn H. Taffs, Krystyna M. Saunders, Kaarina Weckström, Peter A. Gell, and C. Gregory Skilbeck. - PART I ESTARIES AND THEIR MANAGEMENT. - 2 Estuary Form and Function: Implications for Palaeoecological Studies / Peter Scanes, Angus Ferguson, and Jaimie Potts. - 3 Geology and Sedimentary History of Modern Estuaries / C. Gregory Skilbeck, Andrew D. Heap, and Colin D. Woodroffe. - 4 Paleoecological Evidence for Variability and Change in Estuaries: Insights for Management / Krystyna M. Saunders and Peter A. Gell. - PART II CORING AND DATING OF ESTUARINE SEDIMENTS. - 5 Sediment Sampling in Estuaries: Site Selection and Sampling Techniques / C. Gregory Skilbeck, Stacey Trevathan-Tackett, Pemika Apichanangkool, and Peter I. Macreadie. - 6 Some Practical Considerations Regarding the Application of 210Pb and 137Cs Dating to Estuarine Sediments / Thorbjoern Joest Andersen. - 7 Radiocarbon Dating in Estuarine Environments / Jesper Olsen, Philippa Ascough, Bryan C. Lougheed, and Peter Rasmussen. - PART III TECHNIQUES FOR PALAEOENVIRONMENTAL RECONSTRUCTIONS IN ESTUARINES. - 8 Lipid Biomarkers as Organic Geochemical Proxies for the Paleoenvironmental Reconstruction of Estuarine Environments / John K. Volkman and Rienk H. Smittenberg. - 9 C/N ratios and Carbon Isotope Composition of Organic Matter in Estuarine Environments / Melanie J. Leng and Jonathan P. Lewis. - 10 Physical and Chemical Factors to Consider when Studying Historical Contamination and Pollution in Estuaries / Amanda Reichelt-Brushett, Malcolm Clark, and Gavin Birch. - 11 Diatoms as Indicators of Environmental Change in Estuaries / Kathryn H. Taffs, Krystyna M. Saunders, and Brendan Logan. - 12 Dinoflagellate Cysts as Proxies for Holocene Environmental Change in Estuaries: Diversity, Abundance and Morphology / Marianne Ellegaard, Barrie Dale, Kenneth N. Mertens, Vera Pospelova, and Sofia Ribeiro. - 13 Applications of Foraminifera, Testate Amoebae and Tintinnids in Estuarine Palaeoecology / Anupam Ghosh and Helena L. Filipsson. - 14 Ostracods as Recorders of Palaeoenvironmental Change in Estuaries / Jessica M. Reeves. - 15 Application of Molluscan Analyses to the Reconstruction of Past Environmental Conditions in Estuaries / G. Lynn Wingard and Donna Surge. - 16 Corals in Estuarine Environments: Their Response to Environmental Changes and Application in Reconstructing Past Environmental Variability / Francisca Staines-Urías. - 17 Inferring Environmental Change in Estuaries from Plant Macrofossils / John Tibby and Carl D. Sayer. - 18 Applications of Pollen Analysis in Estuarine Systems / Joanna C. Ellison. - PART IV CASE STUDIES. - 19 Palaeo-Environmental Approaches to Reconstructing Sea Level Changes in Estuaries / Brigid V. Morrison and Joanna C. Ellison. - 20 Paleoecology Studies in Chesapeake Bay: A Model System for Understanding Interactions between Climate, Anthropogenic Activities and the Environment / Elizabeth A. Canuel, Grace S. Brush, Thomas M. Cronin, Rowan Lockwood, and Andrew R. Zimmerman. - 21 Paleosalinity Changes in the Río de la Plata Estuary and on the Adjacent Uruguayan Continental Shelf over the Past 1200 Years: An Approach Using Diatoms as a Proxy / Laura Perez, Felipe García-Rodríguez, and Till J.J. Hanebuth. - 22 Application of Paleoecology to Ecosystem Restoration: A Case Study from South Florida’s Estuaries / G. Lynn Wingard. - 23 Paleolimnological History of the Coorong: Identifying the Natural Ecological Character of a Ramsar Wetland in Crisis / Peter A. Gell. - 24 Palaeoenvironmental History of the Baltic Sea: One of the Largest Brackish-water Ecosystems in the World / Kaarina Weckström, Jonathan P. Lewis, Elinor Andrén, Marianne Ellegaard, Peter Rasmussen, and Richard Telford. - Glossary. - Index
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  • 3
    Monograph available for loan
    Monograph available for loan
    Novosibirsk : Studija Dizajn INFOLIO
    Call number: AWI G3-16-90258
    Type of Medium: Monograph available for loan
    Pages: 79 S , Ill., Kt.
    ISBN: 5-85826-024-1
    Language: Russian , English
    Note: Contents: Introduction / L. M. Parfenov. - Standards of geologic time scale / A. K. Val'kov, P. N. Kolosov, O. V. Grinenko. - Pleistocene ice-bearing complex in the Arctic - a vanishing ground ice land / M. N. Grigoryev. - Geological structures of frontal zones of orogenic belts / L. M. Parfenov, A. V. Prokopiev. - Geological structures of inner zones of orogenic belts / A. V. Prokopiev, V. S. Oxman, F. F. Tret'yakov. - Late Cenozoic (Younger than 7 MA) and recent deformation structures / O. V. Grinenko, V. S. Imaev, V. B. Spektor. - Ancient rocks of the continental crust / A. P. Smelov, A. B. Kotov. - Kimberlites and diamonds / V. K. Marshintsev. - Early-collisional gold deposits of eastern Yakutia / V. Yu. Fridovsky, I. I. Kolodeznikov. - Fuel mineral deposits / V. A. Kashirtsev, D. V. Mitronov. - Khonguruu zeolite deposit / K. Ye. Kolodeznikov. - Sirenevyy Kamen' charoite deposit / K. A. Lazebnik. - Kempendyay salt deformations / K. Ye. Kolodeznikov. - Geological structure and geological history of Yakutia / L. M. Parfenov. - Conclusions / V. B. Spector. , Teilw. in kyrill. Schr., , Text russ. und engl.
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  • 4
    Call number: AWI G3-16-90175
    Type of Medium: Dissertations
    Pages: XIV, 162 S , Ill., graph. Darst , 25 cm
    ISBN: 3832250085 (kart.) , 9783832250089
    Series Statement: Berichte aus der Geowissenschaft
    Language: English
    Note: Zugl.: Helsinki, Univ., Diss., 2006
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  • 5
    Monograph available for loan
    Monograph available for loan
    New York, NY [u.a.] : Elsevier
    Call number: AWI G2-17-90655
    Type of Medium: Monograph available for loan
    Pages: S. 123-477 , Ill., graph. Darst., Kt
    ISSN: 0079-6611
    Series Statement: Progress in oceanography Vol. 71, No. 2-4
    Language: English
    Note: Contents: Structure and function of contemporary food webs on Arctic shelves: an introduction / P. Wassmann. - Past glacial and interglacial conditions in the Arctic Ocean and marginal seas - a review / D. A. Darby, L. Polyak and H. A. Bauch. - Climate variability and physical forcing of the food webs and the carbon budget on panarctic shelves / E. Carmack, D. Barber, J. Christensen, R. Macdonald, B. Rudels and E. Sakshaug. - Physical and biological characteristics of the pelagic system across Fram Strait to Kongsfjorden / H. Hop, S. Falk-Petersen, H. Svendsen, S. Kwasniewski, V. Pavlov, O. Pavlova and J. E. Søreide. - Food webs and carbon flux in the Barents Sea / P. Wassmann, M. Reigstad, T. Haug, B. Rudels, M. L. Carroll, H. Hop, G. W. Gabrielsen, S. Falk-Petersen, S. G. Denisenko, E. Arashkevich, D. Slagstad and O. Pavlova.
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  • 6
    Call number: AWI G8-17-90378
    Type of Medium: Monograph available for loan
    Pages: IV, 552, XXV S.
    Language: English
    Note: Table of Contents: SESSION 1: DIELECTRIC PROPTERTIES OF AQUEOUS MATERIALS. - 1 Polymer Chains Linked by Water Molecules. A Dielectric Spectrometry Study. - 2 Accurate Determination of Debye Relaxation Data of Polar Liquids by a Multistep Retro-modelling Technique. - 3 Admittance Derivative Spectrometry of Conducting Liquids. - 4 Accurate Dielectric Properties of Liquid Water from -15 to +40 °C as Determined by Retromodelling of a Dual Resonant Applicator. - 5 Dielectric Study of Temperature-Dependent Behavior of Bound Water in Grain. - SESSION 2: DIELECTRIC PROPTERTIES OF BIOLOGICAL SUBSTANCES AND TISSUES. - 1 Computation of Electromagnetic Fields within a Stratified Structure of Human Head. - 2 Water Effects in Hydrogels Studied by Dielectric Techniques. - 3 Dielectric Relaxation Study on Water Structure Restricted in Rice Kernel. - 4 Dielectric Properties of Water Solutions with Small Content of Sugar and Glucose in the Millimeter Wave Band and the Determination of Glucose in Blood. - 5 Research of the Complex Spectrum Interaction with Surface of Biological Tissue. - 6 Dielectric Properties of Human Semen at Microwave Frequencies. - SESSION 3: APPLICATIONS OF MODEL SYSTEMS, MIXING RULES, CALIBRATION, AND RECONSTRUCTION ALGORITHM. - 1 The Relation between Fractal Dimension and Microwave Parameters. - 2 A Unified Moisture Algorithm for Improved RF Dielectric Grain Moisture Measurements. - 3 Development of TDR-Sensors for Moist Materials Using HFSS. - 4 Modelling of Electromagnetic Wave Propagation along Transmission Lines in Inhomogeneous Media. - 5 The Theoretical Model of the Microwave Complex Permittivity of Grain. - 6 Enhanced Integral Equation Modelling for Moisture Sensors. - 7 Spatial Time Domain Reflectometry with Rod Probes. - SESSION 4: ELECTROMAGNETIC WAVE PROPGAGATION IN LOSSY DIELECTRICS RELATED TO SENSORS. - 1 Electromagnetic Wave Propagation in Polarizable Wet Media. - 2 Radiofrequency Measurement of a Lossy Dielectric Liquid Content in Water. - 3 Measurement of Moisture Content in a Highly Electrical Lossy Material using Time Domain Reflectometry. - 4 Some Topics of Measurement of Complex Permittivity for Lossy Dielectric Materials with Wide-Range of tanδ. - 5 Material Parameter Measurement of Soils and Liquids with a Waveguide Setup. - SESSION 5: MEASUREMENT METHODS. - 1 High Moisture Content Measurement Using Microwave Free-Space Technique. - 2 Comparison of Free Space Reflection and Transmission Time-Domain Measurements for the Determination of the Moisture Content of Bulk Materials. - 3 Hydrous Profile Modeling in Porous Materials from Reflection Coefficient Measurements at 2.45 GHz. - 4 Combined Frequency and Time Domain Moisture Sensing by an Ultra Wideband IQ-M-Sequence Approach. - 5 A Compact Network Analyzer for Resonant Microwave Sensors. - SESSION 6: ELECTROMAGNETIC SENSORS IN TIME- and FREQUENCY DOMAIN FOR MOISTURE CONTENT DETERMINATION IN SOLIDS AND LIQUIDS. - 1 Universal Microwave Moisture Sensor. - 2 Dual Frequency Moisture Sensor Based on Circular Microstrip Antenna. - 3 Characterization and Comparative Evaluation of Novel Planar Electromagnetic Sensors. - 4 Trough Guide Ring Resonator for Precision Microwave Moisture and Density Measurements. - 5 Simple Soil Moisture Probe for Low-Cost Measurement Applications. - SESSION 7: APPLICATIONS IN CIVIL ENGINEERING, PHARMACEUTIAL INDUSTRY, OIL INDUSTRY AND QUALITY INSPECTIONS. - 1 Non-Contact Moisture Sensor for Fresh Concrete. - 2 Application of Microwave Impulse Method for Measuring Moisture Profiles in Building Materials. - 3 Microwave Scanning Technology for Dielectric Material Testing. - 4 Measurement of Continuous Drying out of Subterranean Concrete Walls. - 5 TDR Technique for Measuring the Moisture Content in Brick. - 6 Measuring Moisture Profiles in FGD Gypsum Using the TDR Method. - 7 Advanced Monitoring of Wetness in Pharmaceutical Powder Processes Using In-Situ Dielectric Probe Measurements. - 8 Non-Destructive Microstrip Resonator Technique for the Measurement of Moisture / Permittivity in Crude Oil. - 9 A Novel Application of Planar Electromagnetic Sensing Technique - Quality Inspection of Saxophone Reeds. - SESSION 8: APPLICATION OF METHODS AND SENSORS TO FOODSTUFFS AND AGRICULTURAL PRODUCTS. - 1 New Sensor for High Moist Leaves in Green Tea Production. - 2 Intangible but not Intractable: The Prediction of Food 'Quality' Variables Using Dielectric Spectroscopy. - 3 Microwave Sensing for Food Structure Evaluation. - 4 Effective Microwave Dielectric Properties of Food Materials Consisting of Large Particulates. - 5 RF Impedance Method for Nondestructive Moisture Content Determination in In-Shell Peanuts. - 6 Automatic Control of Moisture in Agricultural Products by Methods of Microwave Aquametry. - 7 High resolution, Non-destructive and In-process Time Domain Aquametry for FMCG and other products using Microstrip sensors. - 8 Frequency and Temperature Dependence of the Permittivity of Fresh Fruits and Vegetables. - 9 A Theoretical Relationship Between the Fractal Dimension and Moisture Content in Grains. - SESSION 9: MOISTURE CONTENT DETERMINATION IN SOIL, SNOW AND WASTE DISPOSALS. - 1 Development of a Sensor for In-situ Determination of Snow, Moisture and Density. - 2 Water Content Measurements in Soil Column Tests with a New Electromagnetic Moisture Sensor. - 3 Alternative Surface Covering of Landfill Using the TAUPE Sealing Control System. - 4 Measurement Method for Detection of Moisture Profiles in a Saline Environment. - SESSION 10: MULTI-PARAMETER MEASUREMENTS FOR DETERMINATION OF PROPERTIES SUCH AS CONDUCTIVITY, MOISTURE, DENSITY, ETC. - 1 Density-independent Moisture Measurements in Polymer Powders Using Millimeter Wave Quasi-optical Resonator. - 2 Granular and Powdered Material Permittivity-density Relationships. - 3 Moisture and Ion Measurement Using Microstripline. - 4 Comparing Near-Field and Far-Field Dielectric Properties Measurements for Accuracy of Bulk Density and Moisture Content Determination in Grain. - POSTER SESSION. - P1 States of Water after the Ionising Radiation on Different Substituted Starches. - P2 Calibration Transfer for the Unified Grain Moisture Algorithm. - P3 Dielectric Properties of Bulk Materials and Restrictions to the Application of Two-Parameter Microwave Aquametry. - P4 Scattering of Electromagnetic Waves by Short Thin Wire and Application to the Modeling of Composites. - P5 Temperature Corrections for a VHF Unified Grain Moisture Algorithm. - P6 Large-scale Sensing of Snow Pack Properties. - P7 Comparing Time Domain Reflectometry and Electrical Resistivity Tomography Measurements for Estimating Soil Water Distribution. - P8 Detecting and Monitoring Frozen Ground and Unfrozen Water Content Using Electric and Electromagnetic Techniques. - P9 Improved Process Control of the Water Content in Biological Filtration Plants. - P10 Experience with Detectors for Infrared Moisture Measuring. - P11 TAUPE Sealing Monitoring System (SMS) for Landfills. - Soil Moisture Group Karlsruhe - Current Work and Future Prospects of a New Research Group. - Applications and Developments of Measurement Methods - an Overview. - Author Index. - Exhibition.
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  • 7
    Call number: AWI NBM-17-90885
    Description / Table of Contents: While researching for another film, filmmakers Tom Radford and Peter Raymont came across the story of Nugliak, an Inuvialuit man born just before the end of the 19th century who observed and wrote of the changes that occurred in the north during his lifetime on Herschel Island. Radford's film loosely follows the book, touching on much the same subjects, but using Nugliak's descendents as a link to the present.
    Description / Table of Contents: It is easy to overlook Herschel Island - a tiny speck of land just off the Yukon coast - where the Inuvialuit hunter Nuligak once followed the great journeys of caribou, polar bears, and whales. The island lays silently on the margins of geography, entrapped in the footnotes of history, a forgotten place frozen in time. And yet just over a century ago Herschel Island was a frontier boomtown, branded "the Sodom of the Arctic" by some visitors at the time. A place cohabited by whalers, Inuit, missionaries, and police; a place of contact and conflict; a place where worlds collided and lives were changed forever. It was on Herschel Island that a young Inucialuit boy, Nuligak (later named Bob Cockney by the missionaries) came of age - fascinated by Herschel, but equally repelled by the excess of so-called civilization. Through Nuligak's touching yet tragic life-story expressed through his writings and echoed by his grandchildren's poignant return to the Island - we are offered a unique view into an often troubling past and a potentially hopeful future.
    Type of Medium: Non-book medium
    Pages: 1 videodisc , round, color and black and white ; 4 3/4 in , 116 min. (70 min. + 46 min.)
    Language: English
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  • 8
    Call number: ZSP-708-19
    In: SCAR report, No. 19
    Type of Medium: Series available for loan
    Pages: 17 S. , Ill., graph. Darst.
    Series Statement: SCAR report 19
    Language: English
    Note: Contents: Executive Summary. - Introduction. - Objectives. - ANTOSTRAT background. - Summary statements. - Input needs for Antarctic paleoclimate modelling. - ANTOSTRAT data management with the information system PANGEA. - Ocean Drilling Programme. - Cape Roberts drilling. - Marine shallow drilling. - Dreging/coring. - Under-ice drilling. - Lake coring. - Terrestrial shallow drilling. - Cosmogenic surface exposure dating in Antarctica: progress and potential. - Synthesis and directions. - Summary. - References. - Acknowledgements. - Appendices. - 1. Workshop agenda. - 2. Workshop participants. - 3. Meeting Report published in EOS. - 4. Acronyms and abbreviations.
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  • 9
    Monograph available for loan
    Monograph available for loan
    Anchorage, Alaska : U.S. Dept. of the Interior, Minerals Management Service, Alaska Outer Continental Shelf Region
    Call number: AWI G3-13-0138
    Type of Medium: Monograph available for loan
    Pages: ix, 408 S. : Ill., Kt.
    Series Statement: OCS study : outer continental shelf / MMS, US Department of the Interior, Minerals Management Service 94-0040
    Language: English
    Note: CONTENTS: STRATIGRAPHY AND PALEOGEOGRAPHY. - The Devonian-Carboniferous Boundary in Russian Eurasia / Kirill V. Simakov. - Base Olenekian and Base Anisian Sequence Boundaries Produced by Triassic Circumpolar 'Synchronous' Transgressions / Atle Mørk, Alexander Y. Egorov, and Ashton F. Embry. - Mesozoic Stratigraphy of Franz Josef Land Archipelago, Arctic Russia - A Literature Review / Ashton F. Embry. - The Continental Triassic Biostratigraphy of the Timan-North Urals Region from Tetrapod Data / Igor V. Novikov. - Climatic Fluctuations and Other Events in the Mesozoic for the Siberian Arctic / Viktor A. Zakharov. - Lower Triassic Vertebrates from the North of Central Siberia / Michael A. Shishkin. - The Use of Parallel Bizonal Scales for Refined Correlation in the Jurassic of the Boreal Realm / Boris L. Nikitenko and Boris N. Shurygin. - Lower Toarcian Black Shales and Pliensbachian-Toarcian Crisis of the Biota of Siberian Paleoseas / Boris L. Nikitenko and Boris N. Shurygin. - Earliest Tertiary Cenozoic Paleogeography of the Arctic Ocean / Louie Marincovich, Jr. - Comparative Geology of Northern Chukotka and the Northern Canadian Cordillera / Yuri M. Bychkov and M. E. Gorodinsky. - Paleokarst in the Katakturuk Dolomite (Proterzoic), Northeastern Brooks Range, Alaska / James G. Clough and Mark S. Robinson. - Pre-Mississippian Rocks in the Clarence and Malcolm Rivers Area, Alaska, and the Yukon Territory / John S. Kelley, Chester T. Wrucke, and Larry S. Lane. - Correlation of Pre-Carboniferous Carbonate Successions of Northern Alaska / Julie A. Dumoulin and Anita G. Harris. - Depositional Record of a Major Tectonic Transition in Northern Alaska: Middle Devonian to Mississippian Rift-Basin Margin Deposits, Upper Kongakut River Region, Eastern Brooks Range, Alaska / Arlene V. Anderson, Wesley K Wallace, and Charles G. Mull. - Deep-Water Facies of the Lisburne Group, West-Central Brooks Range, Alaska / Julie A. Dumoulin, Anita G. Harris, and Jeanine M. Schmidt. - Conodont Biostratigraphy and Biofacies of the Wahoo Limestone (Carboniferous), Eastern Sadlerochit Mountains, Brooks Range, Alaska / Andrea P. Krumhardt, Anita G. Harris, and Keith F. Watts. - Maastrichtian/Danian(?) Ostracode Assemblages from Northern Alaska: Paleoenvironments and Paleobiogeographic Relations / Elisabeth M. Brouwers and Patrick De Deckker. - Geological and Geochemical Analysis of the Aurora Well, Offshore of the Arctic National Wildlife Refuge 1002 Area / Arthur C. Banet. - Correlation Study of Selected Exploration Wells from the North Slope and Beaufort Sea, Alaska / Susan M. Banet and James Scherr. - Correlation of the Pennsylvanian-Lower Cretaceous Succession Between Northwest Alaska and Southwest Sverdrup Basin: Implications for Hanna Trough Statigraphy / Ashton F. Embry, Michael B. Mickey, Hideyo Haga, and John H. Wall. - Stratigraphic and Seismic Analyses of Offshore Yakataga Formation Sections, Northeast Gulf of Alaska / Sarah D. Zellers and Martin B. Lagoe. - Statigraphy and Correlation of the Neoproterozoic Shaler Supergroup, Amundsen Basin, Northwestern Canada / Robert H. Rainbird. - Lower Paleozoic T-R Sequence Stratigraphy, Central Canadian Arctic / Tim A. de Freitas, Ulrich Mayr, and J. Christopher Harrison. - Silurian Foredeep and Accretionary Prism in Northern Ellesmere Island: Implications for the Nature of the Ellesmerian Orogeny / Marcia G. Bjørnerud and D. C. Bradley. - Uppermost Albian-Campanian Palynological Biostratigraphy of Axel Heiberg and Ellesmere Islands (Canadian Arctic) / L. Koldo Núñez-Betelu, R. A. MacRae, L. V. Hills, and G.K Muecke. - STRUCTURE AND TECTONICS. - Triangle Zone Model for the Salt-Based Foldbelt in Canada's Arctic Islands / J. Christopher Harrison. - Subsidence Analysis and Tectonic Modeling of the Sverdrup Basin / Randell A. Stephenson, J. Boerstoel, A. F. Embry, and B. D. Rickerts. - Development of a Glaciated Arctic Continental Margin: Exemplified by the Western Margin of Svalbard / Espen S. Andersen, Anders Solheim, and Anders Elverhøi. - Basin Inversion and Thin-Skinned Deformation Associated with the Tertiary Transpressional West Spitsbergen Orogen / Arild Andresen, Steffen C. Burgh, and Pål Haremo. - The Geology of Franz Josef Land Archipelago, Russian Federation / Vitaly D. Dibner. - Triassic Marginal Basins of Northern and Eastern Europe and Evidence for Global Sea-Level Fluctuations / Vladlen R. Lozovsky. - Rift-and-Graben Systems of the Eurasian-Arctic Continental Margin / Edward V. Shipilov and E. V. Senin. - Accretionary History of Northeast Asia / Leonid N. Parfenov. - Paleomagnetism and the Kolyma Structural Loop / David B. Stone, Stephen G. Crumley, and Leonid M. Parfenov. - Major Tectonic Interpretation and Constraints for the New Siberian Islands Region, Russian Arctic / Mikhael K. Kos'ko. - Geology of Wrangel Island Between Chukchi and East Siberian Seas, Northeastern Russia - Excerpts from Geological Survey of Canada Bulletin 461 / Mikhael K. Kos'ko, Michael P. Cecile, Victor G. Ganelin, Nikolai V. Khandoshkoy, and Boris G. Lopatin. - Precambrian Rocks in the Anadyr-Koryak Region / Oleg N. Ivanov. - Deep Structure of Mafic - Ultramafic Complexes in the Anadyr - Koryak Region / Yuri Ya. Vashchilov. - Accreted Mesozoic Oceanic Complexes of Koryak Superterrane, Northeastern Russia / Vladimir N. Grigoriev, Kirill A . Krylov, and Sergey D. Sokolov. - Reconnaissance Paleomagnetism of the Olyutorsky Superterrane, NE Russia / Alexander Heiphetz, William Harbert, and Leonid Savostin. - Preliminary Reconniassance Paleomagnetism of Some Late Mesozoic Ophiolites, Kuyul Region, Northern Kayak Superterrane, Russia / Alexander Heiphetz, William Harbert, and Paul Layer. - The Gankuvayam Section, Kuyul Ophiolitic Terrane, as a Type Ophiolitic Section on the Arctic Margin of the Russian Far East / Ivan V. Panchenko. - Tectono-Magmatic Environments Within Continent-to-Ocean Transition Zone of the Northwestern Pacific / Oleg N. Ivanov. - Stratigraphy, Structure, and Origin of the Franklinian, Northeast Chukchi Basin, Arctic Alaska Plate / Kirk W. Sherwood. - Early Tertiary Wrench Faulting in the North Chukchi Basin, Chukchi Sea, Alaska / Richard T. Lothamer. - Apatite Fission-Track Evidence of Episodic Early Cretaceous to Late Tertiary Cooling and Uplift Events, Central Brooks Range, Alaska / John M. Murphy, Paul B. O'Sullivan, and Andrew J. W. Gleadow. - The Cenozoic Structural Evolution of the Northeastern Brooks Range, Alaska / Catherine L. Hanks, Wesley K. Wallace, and Paul O'Sullivan. - Timing of Tertiary Episodes of Cooling in Response to Uplift and Erosion, Northeastern Brooks Range, Alaska / Paul B. O'Sullivan. - GEOPHYSICS OF THE ARCTIC OCEAN BASINS AND MARGINS. - A New Crustal Model of the Lincoln Sea Polar Margin / Malcolm Argyle, David A. Forsyth, Andrew V. Okulitch, and Del Huston. - A New Plate Kinematic Model of Canada Basin Evolution / Larry S. Lane. - The Age of the Amerasia Basin / Ashton F. Embry and James Dixon. - Implications for Canada Basin Development from the Crustal Structure of the Southern Beaufort Sea-MacKenzie Delta Area / Randell A. Stephenson, K. C. Coflin, L. S. Lane, and J. R. Dietrich. - A Preliminary Analysis of Potential Field Data in the Southern Chukchi Sea / Bruce M. Hennan and Susan A. Zerwick. - Seismicity of the Amerasian Arctic Shelf and its Relationship to Tectonic Features / Kazuya Fujita and Boris M. Koz'min. - Generalized Rheological Model of the Lithosphere and Plate Tectonics / Vladimir P. Pan and Y. P. Zmiyensky. - The Arctic Geodynamic System: Its Boundaries, Deep Geology and Structural Evolution / Igor S. Gramberg and Y. E. Pogrebitsky. - QUATERNARY AND MARINE GEOLOGY. - The Quaternary Deposits of the Barents Sea and Valdai Glaciation of the Eurasian Arctic Shelf / Lev R. Merklin, N. N. Dunaev, O. V. Levchenko, and Yu. A. Pavlidis. - Deep Ice Scour and Mass Wasting Features on the Northern Svalbard Insular Shelf and Slope / Norman Z. Cherkis, M. D. Max, A. Midthassel, K. Crane,
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  • 10
    Call number: ZSP-708-17
    In: SCAR report, No. 17
    Type of Medium: Series available for loan
    Pages: 26 S.
    Series Statement: SCAR report 17
    Language: English
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  • 11
    Call number: ZSP-708-16
    In: SCAR report, No. 16
    Type of Medium: Series available for loan
    Pages: 78 S. , Ill., graph. Darst.
    Series Statement: SCAR report 16
    Language: English
    Note: Contents: Executive summary. - Introduction. - Consensus statement developed at workshop plenary session. - Summary statements on data bases, current and planned projects, technology and thematic and regional earth science issues. - Introduction. - Late phanerozoic global change challenges. - Data bases, current and planned projects, and technology issues. - ANTOSTRAT Seismic Data Library System (SDLS). - ANTOSTRAT Antarctic Margin Ocean Drilling Program Initiatives. - Deep Stratigraphic Drilling outside the ODP Organization. - Shallow Drilling Technology and Sampling of Late Phanerozoic Targets. - Thematic issues. - Late Mesozoic and Cenozoic plate tectonic and crustal history of Antarctica. - Geological time, and relative and absolute dating systems. - Continental shelf sedimentary basins. - Paleoceanography and circum-Antarctic deep sea marine biosphere history. - Glaciomarine sedimentary processes, events and stratigraphy. - Terrestrial geology. - Antarctic seismic stratigraphy. - Seismic Characterization and physical properties. - Paleoclimate modeling of glacial and climatic history. - Regional Earth Science Issues. - Antarctic Peninsula. - Weddell Sea. - Prydz Bay Region. - Wilkes Land Margin. - Ross Sea. - Acknowledgements. - Figures and captions. - APPENDICES. - 1. ANTOSTRAT Steering Committee. - 2. Workshop Participants. - 3. Selected References. - 4. ANTOSTRAT Workshop Program: Agenda and Format. - 5. Report on Hobart Workshop published in EOS. - 6. Three documents related to the evolution and implementation of the ANTOSTRAT subcommittee - July 1997 to July 1998. - 6a. Response to Consensus Statement on Hobart Workshop, by SCAR Executive Committee - August 1997. -
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  • 12
    Call number: AWI Bio-99-0305-1
    In: Atlas of North European vascular plants, 1
    Type of Medium: Monograph available for loan
    Pages: XVI, 498 S.
    ISBN: 3874292592
    Language: English
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  • 13
    Type of Medium: 12
    Pages: 80 S. , Ill., graph. Darst.
    Series Statement: IHP-VII Technical Documents in Hydrology 83
    Language: English
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  • 14
    Monograph available for loan
    Monograph available for loan
    Trieste : ICTP-the Abdus Salam International Centre for Theoretical Physics, SCS-Scientific Computing Section
    Call number: AWI S4-17-91154
    Type of Medium: Monograph available for loan
    Pages: 94 S. , Ill., graph. Darst.
    Edition: Version 6.1, March 1999
    Language: English
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  • 15
    Monograph available for loan
    Monograph available for loan
    Boca Raton : CRC Press
    Call number: AWI G7-17-91080
    Type of Medium: Monograph available for loan
    Pages: xliv, 382 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 9781482234404
    Language: English
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  • 16
    Call number: AWI P4-17-91082
    Type of Medium: Monograph available for loan
    Pages: 296 S. , Ill., graph. Darst. , 25 cm
    Edition: 1. ed
    ISBN: 9780988462601
    Language: English
    Note: Contents: 1. Introduction. - 2. Current Practices. - 3. Drivers of Change. - 4. The Fuel Penalty. - 5. Underwater Hull Related Environmental Concerns. - 6. Regulatory Aspects. - 7. Hull Coating Systems Compared. - 8. A Better, Viable Alternative. - 9. In-water Ship Hull Cleaning. - 10. Propeller Cleaning. - 11. Rudder Protection. - 12. Case Studies. - 13. Conclusion. - Resources. - Glossary. - Index.
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  • 17
    Monograph available for loan
    Monograph available for loan
    Berlin : Nordeuropa-Inst. der Humboldt-Univ.
    Call number: AWI P5-17-91081
    Description / Table of Contents: Iceland, Greenland and the Faroe Islands have in common their history as Danish dependencies within a historically and geographically coherent region. The complex aftermaths of Denmark's sovereignty over its North Atlantic territories and their ongoing nation building processes lie at the core of this book. Today, we are witnessing region building processes beyond bilateral links to Denmark. How do the countries position themselves, individually and collectively, vis-à-vis the European metropolitan centres, a larger transcontinental North Atlantic region, the "hot" Arctic, and global histories of colonialism and decolonisation? By examining the region from cultural, literary, historical, political, anthropological and linguistic perspectives, the articles in this book shed light on Nordic colonialism and its understanding as "exceptional", and challenge and modify established notions of postcolonialism. Iceland, Greenland and the Faroe Islands are shown to be both the (former) subjects as well as the producers of cultural hierarchisations in an entangled world.
    Type of Medium: Monograph available for loan
    Pages: 422 S.
    Edition: 1. Aufl.
    ISBN: 9783932406355
    Series Statement: Berliner Beiträge zur Skandinavistik 20
    Language: English
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  • 18
    Call number: AWI G2-17-91083
    Type of Medium: Monograph available for loan
    Pages: xxi, 174 S. , Ill., graph. Darst., Kt.
    ISBN: 978-0-9884626-1-8
    Language: English
    Note: Table of Contents: Acronyms & Abbreviations. - Foreword. - Technical review by Dr. W. J. Langston. - Executive Summary. - 1. Introduction. - 1.2 Legislative background. - 1.2.1 International. - 1.2.2 Europe. - 1.2.3 Canada and the USA. - 1.3 Marine sediment contamination - background. - 1.4 Dredging processes. - 1.4.1 Environmental impacts of dredging. - 1.4.2 Effectiveness of dredging to improve environmental exposure to contaminants. - 1.4.3 Case studies. - 1.5 Environmental management of marine sediments. - 1.5.1 Environmental management systems. - 1.5.2 ISO 14001. - 1.5.3 Management techniques. - 1.6 Models and indices used in marine sediment analyses. - 1.7 Methodologies for spatial analysis in sediment dynamics and pollution dispersal. - 1.7.1 Uses of GIS in marine environment. - 1.7.2 Examples of GIS analysis methods for pollution management in the marine environment. - 1.7.3 Organising data. - 1.8 data needs and availability. - 1.8.1 Data needs. - 1.8.2 Data availability. - 1.9 Contaminated area database. - 2. Ecological implications of contaminated sediments. - 2.1 Introduction. - 2.2 Antifoul paints as pollutant sources and reservoirs. - 2.2.1 Background. - 2.3 Antifoul as a contaminant - sources. - 2.3.1 Background. - 2.3.2 Leaching. - 2.3.3 Shipyards. - 2.3.4 Recreational craft. - 2.3.5 Paint residue - macro scale. - 2.3.6 Paint residue - micro scale. - 2.3.7 Sediment disturbance. - 2.4 Antifoul as a contaminant - sinks, secondary sources and pathways. - 2.4.1 Background. - 2.4.2 Sediment sinks - legacy. - 2.4.3 Sediment sinks - residence. - 2.5 Biogeochemical pathways. - 2.6 Antifoul and ecological implications. - 2.7 Ecological effects of sediment antifoul. - 2.7.1 Species to community. - 2.7.2 Legacy, ecology and management. - 2.7.3 Port and harbour examples. - 2.8 Conclusions. - 3. Pilot area introduction and description. - 3.1 Elefsina Bay (Elefsis). - 3.2 Piraeus. - 3.2.1 Piraeus and areas to the west. - 3.2.2 Zea & Microlimano. - 3.3 Lavrio. - 3.4 Rafina. - 3.5 Summary. - 4. Sediment data collection methods & sampling. - 4.1 Sampling design. - 4.2 Sediment sampling procedure. - 4.3 Sediment sample pre-treatment. - 4.4 Chemical analysis. - 4.4.1 Total metal content. - 4.4.2 Metal partitioning in geochemical fractions. - 4.5 Data use. - 5. Database Design & Compilation. - 5.1 Data collection. - 5.2 Database structuring & display. - 5.3 Exploring the database. - 5.4 Summary. - 6. Spatial statistical analyses. - 6.1 Environmental quality guidelines for sediments. - 6.2 Interpolation of data. - 6.3 Cluster & Correlation analysis. - 6.4 Elefsina Bay (Elefsis). - 6.4.1 Geostatistical analysis - kriging. - 6.4.2 Cluster & correlation analysis. - 6.5 Piraeus port and marinas. - 6.5.1 Geostatistical analysis - kriging. - 6.5.2 Cluster & correlation analysis. - 6.6 Lavrio. - 6.6.1 Geostatistical analysis. - 6.6.2 Cluster & correlation analysis. - 6.7 Rafina. - 6.7.1 Cluster & correlation analysis. - 6.8 Conclusions. - 7. Discussion and Overview. - 7.1 Overview of study. - 7.2 Contaminated sediments and their environmental impact. - 7.3 Data availability. - 7.3.1 Summary data at global scale. - 7.3.2 Detailed locational data for analysis. - 7.4 Database development. - 7.5 Implications. - 7.6 Practical application. - 7.7 Funding opportunities for further study. - 7.8 Conclusions. - References. - Journals, Books & Conference Proceedings. - Web Sites. - Appendix A. - A Models and indices used in marine sediment analyses. - A1 Multivariate statistics. - A1.1 Principal component analysis. - A1.2 Cluster analysis. - A1.3 Partial Least squares analysis. - A1.4 Multivariate statistics. - A2 Indices. - A2.1 AZTI Marine Biotic Index (AMBI). - A2.2 Benthic Quality Index (BQI). - A2.3 The Benthic Response Index. - A2.4 The Relative Benthic Index. - A2.5 The Index of Biotic (Biological) Integrity. - A3 Pollution dispersion modelling. - Appendix B. - B Cross-Validation statistics for simple Kriging analysis. - Appendix C. - C1 Using ArcGIS Explorer. - C2 Installing ArcGIS Explorer. - C3 Using ArcExplorer Desktop. - Appendix D. - About the authors.
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  • 19
    Call number: AWI S1-18-91339
    Type of Medium: Monograph available for loan
    Pages: 608 S.
    Edition: 4. ed., repr.
    Language: English
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  • 20
    Call number: AWI P10-17-91200
    Type of Medium: Monograph available for loan
    Pages: 140 S. , Ill., graph. Darst.
    Language: English
    Note: Inhaltsverzeichnis: Vorwort. - Einleitung. - Transliteration. - DDR-Wissenschaftler in der Antarktis. - 1. DDR-Antarktis-Expeditionsgruppe bei der 5. SAE (1959-61). - 2. DDR-Antarktis-Expeditionsgruppe bei der 6. SAE (1960-62). - 3. DDR-Antarktis-Expeditionsgruppe bei der 7. SAE (1961-63). - 4. DDR-Antarktis-Expeditionsgruppe bei der 8. SAE (1962-64). - 5. DDR-Antarktis-Expeditionsgruppe bei der 10. SAE (1964-66). - 6. DDR-Antarktis-Expeditionsgruppe bei der 13. SAE (1967-69). - 7. DDR-Antarktis-Expeditionsgruppe bei der 14. SAE (1968-70). - 8. DDR-Antarktis-Expeditionsgruppe bei der 17. SAE (1971-73). - 9. DDR-Antarktis-Expeditionsgruppe bei der 19. SAE (1973-75). - 10. DDR-Antarktis-Expeditionsgruppe bei der 20. SAE (1974-76). - 11. DDR-Antarktis-Expeditionsgruppe bei der 21. SAE (1975-77). - 12. DDR-Antarktis-Expeditionsgruppe bei der 22. SAE (1976-78). - 13. DDR-Antarktis-Expeditionsgruppe bei der 23. SAE (1977-79). - 14. DDR-Antarktis-Expeditionsgruppe bei der 24. SAE (1978-80). - 15. DDR-Antarktis-Expeditionsgruppe bei der 25. SAE (1979-81). - 16. DDR-Antarktis-Expeditionsgruppe bei der 26. SAE (1980-82). - 17. DDR-Antarktis-Expeditionsgruppe bei der 27. SAE (1981-83). - 18. DDR-Antarktis-Expeditionsgruppe bei der 28. SAE (1982-84). - 19. DDR-Antarktis-Expeditionsgruppe bei der 29. SAE (1983-85). - 20. DDR-Antarktis-Expeditionsgruppe bei der 30. SAE (1984-86). - 21. DDR-Antarktis-Expeditionsgruppe bei der 31. SAE (1985-87). - 22. DDR-Antarktis-Expeditionsgruppe bei der 32. SAE (1986-88). - DDR-Gastforscher bei der 33. SAE (1987-1989). - 1. Antarktis-Expedition der DDR 1987-1989. - 2. Antarktis-Expedition der DDR 1988-1990. - DDR-Gastforscher bei der 34. SAE (1988-1990). - Zeitplan. - Postwertzeichen, Poststempel und philatelistische Drucksachen. - Briefmarken zum Thema DDR-Antarktisforschung. - Ganzsachen zum Thema DDR-Antarktisforschung. - Sonderstempel zum Thema DDR-Antarktisforschung. - Sonderbriefumschläge zum Thema DDR-Antarktisforschung. - Postgebühren. - Nichtpostalische Zusatzstempel. - Verzeichnis der Antarktisstationen. - Abkürzungsverzeichnis. - Literatur- und Quellennachweis.
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  • 21
    Monograph available for loan
    Monograph available for loan
    Dordrecht : Springer
    Call number: AWI S2-18-91494
    Description / Table of Contents: This book provides a compact self-contained introduction to the theory and application of Bayesian statistical methods. The book is accessible to readers having a basic familiarity with probability, yet allows more advanced readers to quickly grasp the principles underlying Bayesian theory and methods. The examples and computer code allow the reader to understand and implement basic Bayesian data analyses using standard statistical models and to extend the standard models to specialized data analysis situations. The book begins with fundamental notions such as probability, exchangeability and Bayes' rule, and ends with modern topics such as variable selection in regression, generalized linear mixed effects models, and semiparametric copula estimation. Numerous examples from the social, biological and physical sciences show how to implement these methodologies in practice. Monte Carlo summaries of posterior distributions play an important role in Bayesian data analysis. The open-source R statistical computing environment provides sufficient functionality to make Monte Carlo estimation very easy for a large number of statistical models and example R-code is provided throughout the text. Much of the example code can be run ``as is'' in R, and essentially all of it can be run after downloading the relevant datasets from the companion website for this book. Peter Hoff is an Associate Professor of Statistics and Biostatistics at the University of Washington. He has developed a variety of Bayesian methods for multivariate data, including covariance and copula estimation, cluster analysis, mixture modeling and social network analysis. He is on the editorial board of the Annals of Applied Statistics.
    Type of Medium: Monograph available for loan
    Pages: IX, 270 Seiten , Illustrationen
    ISBN: 9780387922997 (GB.) , 9780387924076 (electronic)
    Series Statement: Springer texts in statistics
    Language: English
    Note: Contents: 1 Introduction and examples. - 1.1 Introduction. - 1.2 Why Bayes?. - 1.2.1 Estimating the probability of a rare event. - 1.2.2 Building a predictive model. - 1.3 Where we are going. - 1.4 Discussion and further references. - 2 Belief, probability and exchangeability. - 2.1 Belief functions and probabilities. - 2.2 Events, partitions and Bayes' rule. - 2.3 Independence. - 2.4 Random variables. - 2.4.1 Discrete random variables. - 2.4.2 Continuous random variables. - 2.4.3 Descriptions of distributions. - 2.5 Joint distributions. - 2.6 Independent random variables. - 2.7 Exchangeability. - 2.8 de Finetti's theorem. - 2.9 Discussion and further references. - 3 One-parameter models. - 3.1 The binomial model. - 3.1.1 Inference for exchangeable binary data. - 3.1.2 Confidence regions. - 3.2 The Poisson model. - 3.2.1 Posterior inference . - 3.2.2 Example: Birth rates. - 3.3 Exponential families and conjugate priors. - 3.4 Discussion and further references. - 4 Monte Carlo approximation. - 4.1 The Monte Carlo method. - 4.2 Posterior inference for arbitrary functions. - 4.3 Sampling from predictive distributions. - 4.4 Posterior predictive model checking. - 4.5 Discussion and further references. - 5 The normal model. - 5.1 The normal model. - 5.2 Inference for the mean, conditional on the variance. - 5.3 Joint inference for the mean and variance. - 5.4 Bias, variance and mean squared error. - 5.5 Prior specification based on expectations. - 5.6 The normal model for non-normal data. - 5.7 Discussion and further references. - 6 Posterior approximation with the Gibbs sampler. - 6.1 A semiconjugate prior distribution. - 6.2 Discrete approximations. - 6.3 Sampling from the conditional distributions. - 6.4 Gibbs sampling. - 6.5 General properties of the Gibbs sampler. - 6.6 Introduction to MCMC diagnostics. - 6.7 Discussion and further references. - 7 The multivariate normal model. - 7.1 The multivariate normal density. - 7.2 A semiconjugate prior distribution for the mean. - 7.3 The inverse-Wishart distribution. - 7.4 Gibbs sampling of the mean and covariance. - 7.5 Missing data and imputation. - 7.6 Discussion and further references. - 8 Group comparisons and hierarchical modeling. - 8.1 Comparing two groups. - 8.2 Comparing multiple groups. - 8.2.1 Exchangeability and hierarchical models. - 8.3 The hierarchical normal model. - 8.3.1 Posterior inference. - 8.4 Example: Math scores in U.S. public schools. - 8.4.1 Prior distributions and posterior approximation. - 8.4.2 Posterior summaries and shrinkage. - 8.5 Hierarchical modeling of means and variances. - 8.5.1 Analysis of math score data. - 8.6 Discussion and further references. - 9 Linear regression. - 9.1 The linear regression model. - 9.1.1 Least squares estimation for the oxygen uptake data. - 9.2 Bayesian estimation for a regression model. - 9.2.1 A semiconjugate prior distribution. - 9.2.2 Default and weakly informative prior distributions. - 9.3 Model selection. - 9.3.1 Bayesian model comparison. - 9.3.2 Gibbs sampling and model averaging. - 9.4 Discussion and further references. - 10 Nonconjugate priors and Metropolis-Hastings algorithms. - 10.1 Generalized linear models. - 10.2 The Metropolis algorithm. - 10.3 The Metropolis algorithm for Poisson regression. - 10.4 Metropolis, Metropolis-Hastings and Gibbs. - 10.4.1 The Metropolis-Hastings algorithm. - 10.4.2 Why does the Metropolis-Hastings algorithm work?. - 10.5 Combining the Metropolis and Gibbs algorithms. - 10.5.1 A regression model with correlated errors. - 10.5.2 Analysis of the ice core data. -
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  • 22
    Call number: AWI G3-17-91084-2
    In: Kvarter vo vsem ego mnogoobrazii, Tom 2
    Type of Medium: Monograph available for loan
    Pages: 350 S. , Ill., graph. Darst., Kt.
    ISBN: 978-5-91918-124-8
    Language: Russian , English
    Note: TABLE OF CONTENTS: Contemporary hydrographic network of the North-East of the Russian Plain: chronology of development / A. S. Lavrov, L. M. Potapenko. - Some distinctions of big and smoll interglacials (by way of example of Western Siberia during Late Pleistocene) / S. A. Laukhin, A. M. Firsov. - Pollen spectra in the lithological facies of lake bottom sediment on the White Sea Coast / N. B. Lavrova, V. V. Kolka, O. P. Korsakova. - Barsova Gora is the unical object of glacial geology and Taiga vegetation in the middle Priobie / N. B. Levina, V. A. Tkachenko, V. N. Turin, N. N. Lavrovich, E. V. Shepetova. - Geological role of ice in formation of the Arctic Ocean recent and quaternary sediments composition / M. A. Levitan, K. V. Syromyatnikov. - Granite protrusions as a relief-forming factor of the activated sections of platforms and mobile belts / M. G. Leonov, E. S. Przhiyalgovsky. - Glacial tectonics and the granulated substance mechanics / M. G. Leonov, O. G. Epshtein. - Late Pliocene-Early Pleistocene lake sediments in hollow D'Issyk-kul / O. N. Leflat, T. N. Voskresenskaya. - Complexity and diversity of genetic indication of loose formations and new things in the methods of their identification (according to the results of research of small rivers' valleys of the North of Amur-Zeya Plain, Lower Amur Region and Western Priokhotye / E. Yu. Likutov. - Landscape-geological characteristic of travertine cascade of the ancient thermal source of tract pymvashor / A. A. Ljubas, J. N. Bolotov, M. Y. Gofarov, S. A. lglovskiy. - Lake's lithogenesis: new formations are on the bottom of the drying up Udinsky Streach / L. A. Magaeva, M. T. Ustinov. - Genetic classification of peat deposits based on trophicity degree / G. L. Makarenko. - On the issue of classification of mires based on trophicity degree / G. L. Makarenko. - Some burning issues of a structural interpretation of the plain areas relief / V. I. Makarov, N. V. Makarova, T. V. Sukhanova. - The first experience of the 230Th/U dating of buried wood remains / R. E. Maksimov, V. Yu. Kuznetsov, S. A. Laukhin, I. E. Zherebtsov, S. B. Levchenko, N. G. Baranova. - Variations of the relative intensity of geomagnetic field in bottom sediments of the Bering Sea and North-Western Pacific during the last 380 kyr / M. I. Malakhov, S. A. Gorbarenko, D. Nurnberg, R. Tiedemann, G. Yu. Malakhova, J. Riethdorf. - Using high-resolution records petromagnetic and lithophysic characteristics of the sediments Bering Sea and high-latitude Western Pacific for reconstruction of climate and environment in the Late Pleistocene-Holocene / M. I. Malakhov, S. A. Gorbarenko, D. Nurnberg, R. Tiedemann, G. Yu. Malakhova, J. Riethdorf. - Some information about genetic classification of lakes of the Vepsovsky Hill East of the Leningrad Region / O. V. Malozemova, L. A. Nesterova, D. A. Subetto. - Middle Pleistocene small mammal faunas of Eastern and Central Europe: Chronology, correlation / A. K. Markova, T. van Kolfschoten. - Astronomical and meteorological criteria of defining human activity traces in ancient megalith rock complexes in the North-West Russia / L. S. Marsadolov, G. N. Paranina. - Palynological characteristics of the middle Pleistocene deposits in the Vychegda River Basin, the Komi Republic (preliminary data) / T. I. Marchenko-Vagapova. - Isotope specialization (δ18O, δ13C) of quaternary carbonates from Belarus and potential of palaeoenvironments indication / N. A. Makhnach. - The complex survey of quaternary deposits / A. V. Mashukov, A. E. Mashukova. - Quaternary deposits and construction materials' deposits in the Kaluga Region / S. G. Medvedeva. - Vegetation and climate of Sakhalin in the early Holocene / Yu. A. Mikishin, L. G. Gvozdeva. - Inorganic geochemistry record of stages 6-11 from Elgygytgyn lake sediments (deep drilling data) / P. S. Minyuk, V. Ya. Borkhodoev and Elgygytgyn Scientific Party. - Palaeoshorelines on the Murmansk coast / M. V. Mityaev. - Vertical matter flow in Gulfs on Murmansk and Karelian coasts / M. V. Mityaev, M. V. Gerasimova. - Channel and basin components of sediment yield in the formation of quaternary alluvial suites of rivers of the middle Volga Region / V. V. Mozzherin. - Late Pleistocene interglacial-glacial climatic transition (MIS 5/MIS 4) as derived from palynological analysis and IR-OSL dating of deposits from the Voka Reference Section, Southeastern coast of the Gulf of Finland / A. N. Molodkov, N. S. Bolikhovskaya. - Quaternary sediments in the Central Part of Northern West Siberia / D. V. Nazarov. - Palynological evidences of the postglacial warm event of the Laptev Sea Region / O. D. Naidina. - Some problems of using luminescent methods for absolute dating of glacial deposits (by the example of Chagan Section, SE Altai) / R. K. Nepop, A. R. Agatova, H. Rodnight. - Freshwater travertine-like carbonates of the Izhora Plateau as the natural markers of the structural dislocations / M. U. Nikitin, A. A. Medvedeva. - Fold deformations in late Pleistocene deposits of the Central Part Kola Region and their genesis / S. B. Nikolaeva. - Mammoths and man of stone age in Northern Europe - insight of a question on migrations to European Subarctic by Western paths / A. A. Nikonov. - Formation of present-day deposits in the conditions of technogenic litogenesis / E. N. Ogorodnikova, S. K. Nikolaeva. - Traces cryogenesis of Neopleistocene sediments the lower Irtysh / O. L. Opokina, E. A. Slagoda. - Stratigraphical subdivision of the Eopleistocene deposits of the Simbugino Site and new mollusc finds (Southern Foreurals) / E. M. Osipova, G. A. Danukalova. - Late Pleistocene to Holocene environment and climate in the Upper Ponoy Depression (Kola Peninsula) reconstracted from pollen record of Churozero lake bottom deposits / E. Yu. Pavlova, M. V. Dorozhkina, E. I. Devyatova. - Absolute chronology and climatic conditions of Valdai (Vistulian) terraces formation in the middle Seim River Valley / A. Panin, J.-P. Buylaert, E. Matlakhova, A. Murray, O. Pakholova. - Possibility of reconstruction of climate change in the Mongolian Altai based on analysis of annual records in glaciers and lacustrine sediment / T. S. Papma, E. Yu. Mitrofanova, N. S. Malygina. - Northern labyrinth - thee Gnomon: compass, clock, calendar / G. N. Paranina. - Late Pleistocene and Holocene paleogeography of the coastal lowlands of Is. Paramushir (Kuril Islands) / A. Ju. Pakhomov. - Upper-Kama (Verhnekama) Upland - the newest lifting of the middle Last Pleistocene / M. M. Pakhomov, I. L. Borodatyi. - Dating mass accumulations of Mammoth across Arctic Eurasia / V. V. Pitulko, P. A. Nikolskiy, A. E. Basilyan, E. Y. Pavlova. - Features of vertical distribution of the materials within the marginal zones of permafrost polygonal structures and its importance for dating of quaternary deposits in cryolitozone / V. V. Pitulko, E. Y. Pavlova, A. E. Basilyan, S. G. Kritsuk. - Morfogenesis of the tectonics active area of the Mongolian Altay / S. G. Platonova. - Reference section of the Lichvin interglacial in the North-Western Part of European Russia's Region / E. S. Pleshivtseva, V. L. Garkusha, M. A. Travina. - New radiocarbon dates of Late Quaternary Mammals in the Arkhangelsk Region in connection with reconstructions of the last glaciation in the Eastern Europe / D. V. Ponomarev, T. van Kolfschoten, A. K. Markova, J. van der Plicht. - Geological illustrations of Aral-Caspian Region's latest seismodynamic high activity / V. I. Popkov. - About Karagiinsk closed depression (Mangishlak)'s genesis / V. I. Popkov. - On the issue of formation of the Caucasian mineral waters' modern structural geomorphologic aspect / V. I. Popkov, I. G. Sazonov, D. A. Kolleganova. - Natural climate changes on the border of Late Pleistocene and Holocene / A. N. Popova, D. A. Subetto. - Some problems paleogeomorfologi Volga Region / I. V. Proletkin. - New perspectives on modern geomorphological studies / I. V. Proletkin. - Dynamics of small mammals local assem , In kyrill. Schr. , In engl. und rus. Sprache
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  • 23
    Monograph available for loan
    Monograph available for loan
    Chichester [u.a.] : Wiley
    Call number: AWI S2-18-91482
    Type of Medium: Monograph available for loan
    Pages: VIII, 942 S. , graph. Darst.
    ISBN: 9780470510247
    Language: English
    Note: Contents: Preface. - 1 Getting Started. - 2 Essentials of the R Language. - 3 Data Input. - 4 Dataframes. - 5 Graphics. - 6 Tables. - 7 Mathematics. - 8 Classical Tests. - 9 Statistical Modelling. - 10 Regression. - 11 Analysis of Variance. - 12 Analysis of Covariance. - 13 Generalized Linear Models. - 14 Count Data. - 15 Count Data in Tables. - 16 Proportion Data. - 17 Binary Response Variables. - 18 Generalized Additive Models. - 19 Mixed-Effects Models. - 20 Non-linear Regression. - 21 Tree Models. - 22 Time Series Analysis. - 23 Multivariate Statistics. - 24 Spatial Statistics. - 25 Survival Analysis. - 26 Simulation Models. - 27 Changing the Look of Graphics. - References and Further Reading. - Index.
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  • 24
    Monograph available for loan
    Monograph available for loan
    Chichester, UK : John Wiley & Sons
    Call number: AWI A4-18-91479
    Type of Medium: Monograph available for loan
    Pages: xii, 652 Seiten , Illustrationen, graphische Darstellungen, Karten
    Edition: Third edition
    ISBN: 1118778383 (print) , 9781118778388 (print) , 1118778375 (print) , 9781118778371 (print) , 1118778359 (print) , 9781118778357 (print)
    Language: English
    Note: Contents: List of contributors. - Preface. - 1 Overview of sea ice growth and properties / Chris Petrich & Hajo Eicken. - 2 Sea ice thickness distribution / Christian Haas. - 3 Snow in the sea-ice system : friend or foe? / Matthew Sturm & Robert A. Massom. - 4 Sea ice and sunlight / Donald K. Perovich. - 5 The sea ice-ocean boundary layer / Miles G. McPhee. - 6 The atmosphere over sea ice / Ola Persson & Timo Vihma. - 7 Sea ice and arctic ocean oceanography / Finlo Cottier, Mike Steele & Frank Nielsen. - 8 Oceanography and sea ice in the southern ocean / Michael P. Meredith & Mark A. Brandon. - 9 Methods of satellite remote sensing of sea ice / Gunnar Spreen & Stefan Kern. - 10 Gaining (and losing) antarctic sea ice : variability, trends and mechanisms / Sharon Stammerjohn & Ted Maksym. - 11 Losing arctic sea ice : observations of the recent decline and the long-term context / Walt N. Meier. - 12 Sea ice in earth system models / Dirk Notz & Cecilia M. Bitz. - 13 Sea ice as a habitat for bacteria, archaea and viruses / Jody W. Deming & R. Eric Collins. - 14 Sea ice as a habitat for primary producers / Kevin R. Arrigo. - 15 Sea ice as a habitat for micrograzers / David A. Caron, Rebecca J. Gast & Marie-Eve Garneau. - 16 Sea ice as a habitat for macrograzers / Bodil A. Bluhm, Kerrie M. Swadling & Rolf Gradinger. - 17 Nutrients, dissolved organic matter and exopolymers in sea ice / Klaus M. Meiners & Christine Michel. - 18 Gases in sea ice / Jean-Louis Tison, Bruno Delille & Stathys Papadimitriou. - 19 Transport and transformation of contaminants in sea ice / Feiyue Wang, Monika Pucko & Gary Stern. - 20 Numerical models of sea ice biogeochemistry / Martin Vancoppenolla & Letizia Tedesco. - 21 Arctic marine mammals and sea ice / Kristin L. Laidre & Eric V. Regehr. - 22 Antarctic marine mammals and sea ice / Marthán N. Bester, Horst Bornemann & Trevor McIntyre. - 23 A feathered perspective : the influence of sea ice on arctic marine birds / Nina J. Karnovsky & Maria V. Gavrilo. - 24 Birds and antarctic sea ice / David Ainley, Eric J. Woehler & Amelie Lescroel. - 25 Sea ice is our beautiful garden : indigenous perspectives on sea ice of sea ice in the arctic / Henry P. Huntington, Shari Gearheard, Lene Kielsen Holm, George Noongwook, Margaret Opie & Joelie Sanguya. - 26 Advances in palaeo sea-ice estimation / Leanne Armand, Alexander Ferry & Amy Leventer. - 27 Ice in subarctic seas / Hermanni Kaartokallio, Mats A. Granskog, Harri Kuosa & Jouni Vainio. - Index.
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  • 25
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : Cambridge Univ. Press
    Call number: AWI S2-18-91484
    Type of Medium: Monograph available for loan
    Pages: XI, 269 S. , graph. Darst. , 26 cm
    Edition: Transferred to digital printing 2009
    ISBN: 052181409X (hb) , 0521891086 (pb.)
    Language: English
    Note: Contents: Preface. - 1. Introduction and data manipulation. - 1.1. Why ordination?. - 1.2. Terminology. - 1.3. Types of analyses. - 1.4. Response variables. - 1.5. Explanatory variables. - 1.6. Handling missing values in data. - 1.7. Importing data from spreadsheets - WCanoImp program. - 1.8. Transformation of species data. - 1.9. Transformation of explanatory variables. - 2. Experimental design. - 2.1. Completely randomized design. - 2.2. Randomized complete blocks. - 2.3. Latin square design. - 2.4. Most frequent errors - pseudoreplications. - 2.5. Combining more than one factor. - 2.6. Following the development of objects in time - repeated observations. - 2.7. Experimental and observational data. - 3. Basics of gradient analysis. - 3.1. Techniques of gradient analysis. - 3.2. Models of species response to environmental gradients. - 3.3. Estimating species optima by the weighted averaging method. - 3.4. Calibration. - 3.5. Ordination. - 3.6. Constrained ordination. - 3.7. Basic ordination techniques. - 3.8. Ordination diagrams. - 3.9. Two approaches. - 3.10. Testing significance of the relation with environmental variables. - 3.11. Monte Carlo permutation tests for the significance of regression. - 4. Using the Canoco for Windows 4.5 package. - 4.1. Overview of the package. - 4.2. Typical flow-chart of data analysis with Canoco for Windows. - 4.3. Deciding on the ordination method: unimodal or linear?. - 4.4. PCA or RDA ordination: centring and standardizing. - 4.5. DCA ordination: detrending. - 4.6. Scaling of ordination scores. - 4.7. Running CanoDraw for Windows 4.0. - 4.8. New analyses providing new views of our data sets. - 5. Constrained ordination and permutation tests. - 5.1. Linear multiple regression model. - 5.2. Constrained ordination model. - 5.3. RDA: constrained PCA. - 5.4. Monte Carlo permutation test: an introduction. - 5.5. Null hypothesis model. - 5.6. Test statistics. - 5.7. Spatial and temporal constraints. - 5.8. Split-plot constraints. - 5.9. Stepwise selection of the model. - 5.10. Variance partitioning procedure. - 6. Similarity measures. - 6.1. Similarity measures for presence-absence data. - 6.2. Similarity measures for quantitative data. - 6.3. Similarity of samples versus similarity of communities. - 6.4. Principal coordinates analysis. - 6.5. Non-metric multidimensional scaling. - 6.6. Constrained principal coordinates analysis (db-RDA). - 6.7. Mantel test. - 7. Classification methods. - 7.1. Sample data set. - 7.2. Non-hierarchical classification (K-means clustering). - 7.3. Hierarchical classifications. - 7.4. TWINSPAN. - 8. Regression methods . - 8.1. Regression models in general. - 8.2. General linear model: terms. - 8.3. Generalized linear models (GLM). - 8.4. Loess smoother. - 8.5. Generalized additive models (GAM). - 8.6. Classification and regression trees. - 8.7. Modelling species response curves with CanoDraw. - 9. Advanced use of ordination. - 9.1. Testing the significance of individual constrained ordination axes. - 9.2. Hierarchical analysis of community variation. - 9.3. Principal response curves (PRC) method. - 9.4. Linear discriminant analysis. - 10. Visualizing multivariate data. - 10.1. What we can infer from ordination diagrams: linear methods. - 10.2. What we can infer from ordination diagrams: unimodal methods. - 10.3. Visualizing ordination results with statistical models. - 10.4. Ordination diagnostics. - 10.5. t-value biplot interpretation. - 11. Case study 1: Variation in forest bird assemblages. - 11.1. Data manipulation. - 11.2. Deciding between linear and unimodal ordination. - 11.3. Indirect analysis: portraying variation in bird community. - 11.4. Direct gradient analysis: effect of altitude. - 11.5.Direct gradient analysis: additional effect of other habitat characteristics. - 12. Case study 2: Search for community composition patterns and their environmental correlates: vegetation of spring meadows. - 12.1. The unconstrained ordination. - 12.2. Constrained ordinations. - 12.3. Classification. - 12.4. Suggestions for additional analyses. - 13. Case study 3: Separating the effects of explanatory variables. - 13.1. Introduction. - 13.2. Data. - 13.3. Data analysis. - 14. Case study 4: Evaluation of experiments in randomized complete blocks. - 14.1. Introduction. - 14.2. Data. - 14.3. Data analysis. - 15. Case study 5: Analysis of repeated observations of species composition from a factorial experiment. - 15.1. Introduction. - 15.2. Experimental design. - 15.3. Sampling. - 15.4. Data analysis. - 15.5. Univariate analyses. - 15.6. Constrained ordinations. - 15.7. Further use of ordination results. - 15.8. Principal response curves. - 16. Case study 6: Hierarchical analysis of crayfish community variation. - 16.1. Data and design. - 16.2. Differences among sampling locations. - 16.3. Hierarchical decomposition'of community variation. - 17. Case study 7: Differentiating two species and their hybrids with discriminant analysis. - 17.1. Data. - 17.2. Stepwise selection of discriminating variables. - 17.3. Adjusting the discriminating variables. - 17.4. Displaying results. - Appendix A: Sample datasets and projects. - Appendix B: Vocabulary. - Appendix C: Overview of available software. - References. - Index.
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  • 26
    Call number: AWI Bio-18-91560-3
    In: Flora in desertis Reipublicae Populorum Sinarum, Tomus 3
    Type of Medium: Monograph available for loan
    Pages: III, 508 S , Ill
    ISBN: 7030023471
    Language: Chinese , Latin
    Note: Contents: Primulaceae. - 1. Primula L. - 2. Androsace L. - 3. Glaux L. - 4. Lysimachia L. - Plumbaginaceae. - 1. Goniolimon Boiss. - 2. Limonium Mill. - Oleaceae. - 1. Fraxinus L. - Loganiaceae. - Buddleja L. - Gentianaceae. - 1. Centaurium Hill. - 2. Gentiana L. - 3. Nymphoides Seguier. - Apocynaceae. - 1. Apocynum L. - 2. Poacynum Baill. - Asclepiadaceae. - 1. Periploca L. - 2. Cynanchum L. - Convolvulaceae. - 1. Convovulus L. - 2. Calystegia R. Br. - 3. Cuscuta L. - Hydrophyllaceae. - 1. Phacelia Juss. - Boraginaceae. - 1. Rindera Pall. - 2. Heliotropium L. - 3. Messerschmidia L. ex Hebenstr. - 4. Symphytum L. - 5. Rochelia Reichb. - 6. Asperugo L. - 7. Gastrocotyle Bge. - 8. Nonea Medic. - 9. Lycopsis L. - 10. Heterocarpum DC. - 11. Cynoglossum L. - 12. Lappula V. Wolf. - 13. Stenosolenium Turcz. - 14. Trigonotis Stev. - 15. Lepechiniella M. Pop. - 16. Arnebia Forsk. - 17. Onosma L. - 18. Lithospermum L. - 19. Echium L. - Verbenaceae. - 1. Caryopteris Bge. - Labiatae. - 1. Amethystea L. - 2. Scutellaria L. - 3. Marrubium L. - 4. Lagopsis Bge. ex Benth. - 5. Schizonepeta (Benth.) Briq. - 6. Lallemantia Fisch. et Mey. - 7. Dracocephalum L. - 8. Nepeta L. - 9. Eremostachys Bge. - 10. Phlomis L. - 11. Leonurus L. - 12. Panzeria Moench. - 13. Lagochilus Bge. - 14. Stachys L. - 15. Charmaesphacos Schrenk. - 16. Salvia L. - 17. Clinopodium L. - 18. Ziziphora L. - 19. Hyssopus L. - 20. Thymus L. - 21. Mentha L. - 22. Lycopus L. - 23. Elsholtzia Willd. - 24. Plectranthus L'Her. - Solanaceae. - 1. Lycium L. - 2. Solanum L. - 3. Hyoscyamus L. - 4. Datura L. - Scrophulariaceae. - 1. Veronicastrum Heist. ex Farbic. - 2. Veronica L. - 3. Linaria Mill. - 4. Limosella L. - 5. Leptorhabdos Schrenk. - 6. Scrophularia L. - 7. Rehmannia Libosch. ex Fisch. et Mey. - 8. Dodartia L. - 9. Omphalothrix Maxim. - 10. Euphrasia L. - 11. Odontites Ludw. - 12. Pedicularis L. - 13. Cymbaria L. - 14. Siphonostegia Benth. - Bignoniaceae. - 1. Incarvillea Juss. - Orobanchiaceae. - 1. Orobanche L. - 2. Cistanche Hoffmg. et Link. - Lentibulariaceae. - 1. Utricularia L. - Plantaginaceae. - 1. Plantago L. - Rubiaceae. - 1. Microphysa Schrenk. - 2. Galium L. - 3. Rubia L. - 4. Leptodermis Wall. - Caprifoliaceae. - 1. Lonicera L. - 2. Viburnum L. - 3. Sambucus L. - Valerianaeceae. - 1. Patrinia Juss. - Dipsaceae. - 1. Scabiosa L. - Campanulaceae. - 1. Adenophora Fisch. - 2. Lobelia L. - Compositae. - I. Eupatorieae. - 1. Eupatorium L. - II. Asterae Cass. - 2. Heteropappus Less. - 3. Aster L. - 4. Asterothamnus Novopokr. - 5. Galatella Cass. - 6. Linosyris Cass. - 7. Arctogeron DC. - 8. Tripolium Nees. - 9. Brachyactis Ledeb. - 10. Erigeron L. - 11. Conyza L. - III. Heliantheae. - 12. Xanthium L. - 13. Siegesbeckia L. - 14. Bidens L. - IV. Anthemideae. - 15. Achillea l. - 16. Tripleuospermum Sch. Bip. - 17. Tanacetum L. - 18. Hippolytia Poljak. - 19. Cancrinia Kar. et Kir. - 20. Brachanthemum DC. - 21. Dendranthema (DC,) Des. Moul. - 22. Stilpnolepis Krasch. - 23. Ajania Poljak. - 24. Filifolium Kitam. - 25. Kaschgaria Poljak. - 26. Elachanthemum Ling et Y. R. Ling. - 27. Neopallasia Poljak. - 28. Artemisia L. - V. Senecioneae. - 29. Senecio L. - 30. Ligularia Cass. - VI. Inuleae. - 31. Karelinia Less. - 32. Filago L. - 33. Leontopodium R. Brown. - 34. Gnaphalium L. - 35. Helichrysum Mill. - 36. Inula L. - 37. Pulicaria Gaertn. - VII. Echinopsideae. - 38. Echinops L. - VIII. Cynareae. - 39. Carlina L. - 40. Tugarinovia Iljin. - 41. Arctium L. - 42. Acroptilon Cass. - 43. Cousinia Cass. - 44. Olgaea Iljin. - 45. Ancathia DC. - 46. Carduus L. - 47. Cirsium Mill. emend. Scop. - 48. Silybum Adans. - 49. Oligochaeta C. Koch. - 50. Saussurea DC. - 51. Pilostemon Iljin. - 52. Jurinea Cass. - 53. Onopordum L. - 54. Russowia C. Winkl. - 55. Plagiobasis Schrenk. - 56. Serratula L. - 57. Schischkinia Iljin. - 58. Chartolepis Cass. - 59. Stemmacantha Cass. - 60. Amberboa (Pers.) Less. - 61. Hyalea (DC.) Jaub. et Spach. - 62. Centaurea L. - 63. Carthamus L. - IX. Cichorieae. - 64. Cichorium L. - 65. Garhadiolus Jaub. et Spach. - 66. Koelpinia Pall. - 67. Heteracia Fisch. et Mev. - 68. Achyrophorus Adans. - 69. Picris L. - 70. Epilasia (Bge.) Benth. et Hook. - 71. Scorzonera L. - 72. Tragopogon L. - 73. Taraxacum Wigg. - 74. Paramicrophynchus Kirp. - 75. Sonchus L. - 76. Cephalorrhynchus Boiss. - 77. Lactuca L. - 78. Chondrilla L. - 79. Hexinia H. L. Yang, gen. nov. in Addenda. - 80. Hieracium L. - 81. Crepis L. - 82. Ixeris Cass. - 83. Youngia Cass. - Addenda Diagnoses Taxorum Novarum. , Titel und Text in chines. Schr. , Nomenclature also in Latin.
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  • 27
    Monograph available for loan
    Monograph available for loan
    [s.l.] : [s.n.]
    Call number: AWI S6-18-91804
    Type of Medium: Monograph available for loan
    Pages: 29 Seiten , Illustrationen
    Language: Russian , English
    Note: In kyrillischer Schrift , In russischer und englischer Sprache
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  • 28
    Monograph available for loan
    Monograph available for loan
    London : H.M.S.O
    Call number: AWI G10-18-91809
    Type of Medium: Monograph available for loan
    Pages: 45 Seiten , Karte , 30 cm
    Edition: 2nd ed
    ISBN: 0115917179 (pbk.)
    Language: English
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  • 29
    Call number: AWI E1-89-0347
    Type of Medium: Monograph available for loan
    Pages: 50 Seiten , Illustrationen
    Language: English
    Note: Contents: Preface. - Part I German oceanographic institutions. - Part II German oceanographic expeditions. - Part III German oceanographers. - References.
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  • 30
    Monograph available for loan
    Monograph available for loan
    Amsterdam : Elsevier
    Call number: AWI G2-18-91738
    Type of Medium: Monograph available for loan
    Pages: XI, 716 Seiten , Illustrationen
    Edition: third edition
    ISBN: 9780123877826
    Language: English
    Note: Contents: Preface. - Acknowledgments. - 1. Data Acquisition and Recording. - 1.1 Introduction. - 1.2 Basic Sampling Requirements. - 1.3 Temperature. - 1.4 Salinity. - 1.5 Depth or Pressure. - 1.6 Sea-Level Measurement. - 1.7 Eulerian Currents. - 1.8 Lagrangian Current Measurements. - 1.9 Wind. - 1.10 Precipitation. - 1.11 Chemical Tracers. - 1.12 Transient Chemical Tracers. - 2. Data Processing and Presentation. - 2.1 Introduction. - 2.2 Calibration. - 2.3 Interpolation. - 2.4 Data Presentation. - 3. Statistical Methods and Error Handling. - 3.1 Introduction. - 3.2 Sample Distributions. - 3.3 Probability. - 3.4 Moments and Expected Values. - 3.5 Common PDFs. - 3.6 Central Limit Theorem. - 3.7 Estimation. - 3.8 Confidence Intervals. - 3.9 Selecting the Sample Size. - 3.10 Confidence Intervals for Altimeter-Bias Estimates. - 3.11 Estimation Methods. - 3.12 Linear Estimation (Regression). - 3.13 Relationship between Regression and Correlation. - 3.14 Hypothesis Testing. - 3.15 Effective Degrees of Freedom. - 3.16 Editing and Despiking Techniques: The Nature of Errors. - 3.17 Interpolation: Filling the Data Gaps. - 3.18 Covariance and the Covariance Matrix. - 3.19 The Bootstrap and Jackknife Methods. - 4. The Spatial Analyses of Data Fields. - 4.1 Traditional Block and Bulk Averaging. - 4.2 Objective Analysis. - 4.3 Kriging. - 4.4 Empirical Orrhogonal Functions. - 4.5 Extended Empirical Orrhogonal Functions. - 4.6 Cyclostationary EOFs. - 4.7 Factor Analysis. - 4.8 Normal Mode Analysis. - 4.9 Self Organizing Maps. - 4.10 Kalman Filters. - 4.11 Mixed Layer Depth Estimation. - 4.12 Inverse Methods. - 5. Time Series Analysis Methods. - 5.1 Basic Concepts. - 5.2 Stochastic Processes and Stationarity. - 5.3 Correlation Functions. - 5.4 Spectral Analysis. - 5.5 Spectral Analysis (Parametric Methods). - 5.6 Cross-Spectral Analysis. - 5.7 Wavelet Analysis. - 5.8 Fourier Analysis. - 5.9 Harmonic Analysis. - 5.10 Regime Shift Detection. - 5.11 Vector Regression. - 5.12 Fractals. - 6. Digital Filters. - 6.1 Introduction. - 6.2 Basic Concepts. - 6.3 Ideal Filters. - 6.4 Design of Oceanographic Filters. - 6.5 Running-Mean Filters. - 6.6 Godin-Type Filters. - 6.7 Lanczos-window Cosine Filters. - 6.8 Butterworth Filters. - 6.9 Kaiser-Bessel Filters. - 6.10 Frequency-Domain (Transform) Filtering. - References. - Appendix A: Units in Physical Oceanography. - Appendix B: Glossary of Statistical Terminology. - Appendix C: Means, Variances and Moment,Generating Functions for Some Common Continuous Variables. - Appendix D: Statistical Tables. - Appendix E: Correlation Coefficients at the 5% and 1% Levels of Significance for Various Degrees of Freedom v. - Appendix F: Approximations and Nondimensional Numbers in Physical Oceanography. - Appendix G: Convolution. - Index.
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  • 31
    Journal available for loan
    Journal available for loan
    Woods Hole, Mass. : Woods Hole Oceanographic Institution
    Associated volumes
    Call number: AWI P6-89-0371
    In: Oceanus
    Type of Medium: Journal available for loan
    Pages: 112 Seiten , Illustrationen, graphische Darstellungen, Karten
    ISSN: 0029-8182
    Series Statement: Oceanus 31,2
    Language: English
    Note: Contents: A reader's guide to the Antarctic / James H. W. Hain. - Introduction: The callenge of Antarctic Science / David J. Drewry. - The Antarctic Treaty. - The Antarctic Treaty System / Lee A. Kimball. - The Antarctic Mineral Resources Negotiations / R. Tucker Scully. - The Antarctic Legal Regime and the Law of the Sea / Christopher C. Joyner. - Antarctica: Is there any oil and natural gas? / David H. Elliot. - The Southern Ocean and global climate / Arnold L. Gordon. - The Antarctic Ozone Hole / Mario J. Molina. - The Antarctic Circumpolar current / Thomas Whitworth III. - Antarctic Marine Living Resources / Kenneth Sherman, and Alan F. Ryan. - Whales / Douglas G. Chapman. - Seals / Donald B. Siniff. - The BIOMASS Program / Sayed Z. El-Sayed. - Antarctic Logistics / Alfred N. Fowler. - The Soviet Antarctic Program / Lawson W. Brigham. - The growth of Antarctic Tourism / Paul Dudley Hart. - Protecting the Antarctic Environment / Gerald S. Schatz. - Environmental Threats in Antarctica / Paul S. Bogart. - Letters. - Book reviews.
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  • 32
    Call number: AWI P7-18-91976
    Type of Medium: Monograph available for loan
    Pages: 140 Seiten , Illustrationen
    Language: English
    Note: Contents: Polar sciences and global environmental changes / Byong-Kwon Park. - The sun earth connection: thermodynamics of the terrestrial atmosphere during geo-effective events / R. J. Niciejewski and Y.-I. Won. - Observations of atmospheric waves in the high-latitude / Y.-I. Won, R. J. Niciejewski, P. Espy, J.-K. Chung and Bang Yong Lee. - Malaysian Antarctic Research Program / Nasaruddin Rahman, Salleh Mohd Nor and Azizan Abu Samah. - Compositional variation in pyrochlore from the Sokoli Phoscorite-Carbonatite complex, Kola Peninsula, Arctic / Mi Jung Lee, C. Terry Williams, Jong Ik Lee, and Yeadong Kim. - U-Th-Pb electron microprobe datings on the Rayner complex, East Antarctica / Yoichi Motoyoshi, Tomokazu Hokada and Kazuyuki Shiraishi. - Geochemical variation during hydrothermal alteration of basaltic andesite at Barton Peninsula, King George Island, Antarctica / Soon Do Hur, Jong Ik Lee and Jeong Hwang. - The paleocene-eocene volcanic succession in the Barton Peninsula, King George Island, Antarctica: Lithofacies, eruption styles and depositional processes / Seung Bum Kim, Young Kwan Shon and Moon Young Choe. - Holocene paleoclimate in Antarctic Lake Langer (King George Island) / B. K. Khim, K. Lee, H. I. Yoon and C. Y. Kang. - Holocene paleoceanography and paleoclimate of the West Spitsbergen Area, Euro-Arctic margin / Morten Hald, Hanne Ebbesen, Matthias Forwick, Sergei Korsun, Tore O. Vorren, Liza Khomenko, and Fred Godtliebsen. - Origins and paleoceanographic significance of layered diatom ooze interval from the Bransfield Strait in the Northern Antarctic Peninsula around 2500 yrs BP / Ho Il Yoon, Byong-Kwon Park, Yeadong Kim, Cheon Yun kang and Sung-Ho Kang. - A record of holocene environmental changes in terrestrial sedimentary deposits on King George Island, Antarctica / A. Tatur, R. del Valle, A. Barczuk, J. Martinez-Macchiavello. - Geochemistry of soils of King George Island, South Shetland Islands, West Antarctica: Implications for pedogenesis in cold polar regions / Yong Il Lee, Hyoun Soo Lim, and Ho Il Yoon. - Seafloor structure around the epicenter of the Great Antarctic Plate earthquake / Yoshifumi Nogi and Kin-ichiro Koizumi. - Multidisciplinary surveys by 'structure and evolution of the East Antarctic Lithosphere': SEAL-2000, -2002 / M. Kanao, H. Miyamachi, S. Toda, H. Murakami, T. Tsutsui, T. Matsushima, M. Takada, A. Watanabe, M. Yamashita, K. Yoshii, K. Kaminuma, and SEAL Geotransect Group. - Local seismic activity around Syowa Station, East Antarctica / Katsutada Kaminuma and Masaki Kanao. - Morphological characteristics of the intersection between Phoenix Ridge and the Hero Fracture Zone / Kyu Jung Kim, Young Keun Jin, Sang Heon Nam, Joo Han Lee and Yeadong Kim. - Visual observation experiments to investigate the formation processes of globular gas hydrate / H. Shoji. - Gas hydrate BSR-derived heat flow variation on the South Shetland Continental Margin, Antarctic Peninsula / Young Keun Jin, Sang Heon Nam, Yeadong Kim, Kyu Jung Kim and Joo Han Lee. - Introduction to ice core drilling program on Amery Ice Shelf in the 2002/2003 Antarctic summer season / Yuansheng Li, Dejun Tan, Zengdi Pan, Zhaoqian Dong, Bo Sun and Jiahong Wen. - 724 M deep ice core from Akademii Nauk Ice Cap Severnaya Zemlya (Russian Arctic) - Electrical conductivity measurements and isotopic record / D. Fritzsche, R. Schütt, H. Meyer, H. Miller, and F. Wilhelms. - Introduction of the Chinese Polar Cryospheric Database System (CPCDS) / Xiang Qin, Dahe Qin and Yongjian Ding. - Natural variations in lead, cadmium, copper and zinc concentrations and their sources in Vostok Antarctic Ice from 65,000 to 240,000 years BP / Sungmin Hong, Kang Hyun Lee, Claude F. Boutron, Christophe P. Ferrari, Jean Robert Petit, Carlo Barbante, Kevin Rosman, Vladimir Y. Lipenkov. - Fluctuation of ice sheet elevation in East Antarctica since the late Pliocene / Xiaohan Liu, Ping Kong, Feixin Huang, Xiaoli Li, and Aimin Fang. - Variations of total ozone amount and erythermal ultraviolet radiation at King Sejong Station in West Antarctica / Bang Yong Lee, Hi-Ku Cho, Yun-Gon Lee and Young-In Won. - Variability of regional atmospheric circulation related with recent warming in the Antarctic Peninsula / Jeong-Soon Lee, Tae-Yong Kwon, Bang-Yong Lee, Ho Il Yoon and Jeong-Woo Kim. - The surface UV-A and erythermal UV-B radiation changes at King Sejong Station of West Antarctica / Kyu-Tae Lee, Joon-Bum Jee, Won-Hak Lee, Youn-Joung Kim, Bang Yong Lee, and Young-In Won. - Climatological characteristics of the polar ionosphere based on the Sondrestrom and Chatanika incoherent scatter radar measurements / Young-Sil Kwak and Byung-Ho Ahn. - Cloudy band and air inclusions observed in deep ice core samples from GRIP, Greenland / Kimiko Shimohara, Hitoshi Shoji and Sepp Kipfstuhl. - Geochemical trends and Milankovitch cycles within sediment from the North Atlantic Ocean / Sangmin Hyun, Naokazu Ahagon and Ho Il Yoon. - Oceanographic mechanism of regional warming in the Antarctic Peninsula / Kyu-Cheul Yoo, Ho Il Yoon, Jae-Kyung Oh, Tae-Yong Kwon and Cheon Yun Kang. - East Asian Monsoon variation during the late pleistocene to holocene: paleoclimate changes indicated by proxy records from Jeju Island, Korea / Seung Hyoun Lee, Yong Il Lee, Ho Il Yoon and Cheon Yun Kang. - Occurrence of vivianite in late pleistocene lacustrine sediments at Sogwipo, Jeju Island, Korea / Seung Hyoun Lee, Yong Il Lee, Ho Il Yoon, Cheon Yun Kang and Yaedong Kim. - Microfabric analysis of laminated diatom ooze in the holocene sediments from the eastern Bransfield Strait, Antarctic Peninsula / Jang Jun Bahk, Ho Il Yoon, Yeadong Kim, Cheon Yun Kang and Sung Ho Bae. - Late Quaternary paleoenvironment of the Saint Anna Trough, Arcitc Russia / Jae Il Lee, Yeadong Kim and Ho Il Yoon. - Formation and dissociation processes of gas hydrates composed of methane and carbon dioxide below the ice point / A. Hachikubo, K. Yamada, T. Miura, K. Hyakutake, K. Abe and H. Shoji. - Visual observations of tubular gas hydrate formation in a pressure cell with water and seafloor sediment / K. Hyakutake, O. Kitamura, S. Kataoka, A. Hachikubo, H. Shoji and L. Mazurenko. - Formation processes of massive gas hydrate in a pressure cell with water-saturated sediment conditions / O. Kitamura, S. Kataoka, K. Hyakutake, A. Hachikubo and H. Shoji. - Phase equilibrium studies on mixed gas hydrates composed of methane and carbon dioxide below the ice point / T. Miura, A. Hachikubo, K. Hyakutake, K. Abe and H. Shoji. - CP-MAS 13C-NMR study on the crystallographic structure of natural gas hydrate in the bottom of the Okhotsk Sea and Lake Baikal / M. Kida, H. Sakagami, H. Minami, Y. Numokawa, N. Takahashi, T. Matveeva, H. Shoji, S. Takeya, Y. Kamata, T. Ebinuma, H. Narita, V. Soloviev, K. Wallmann, N. Biebow, A. Obzhirov, A. Salomatin, J. Poort, O. Khlystov and M. Grachev. - Some features of gas hydrates in the sea of Okhotsk / T. Matveeva, V. Soloviev, K. Wallmann, A. Obzhirov, N. Biebow, J. Poort, A. Salomatin and H. Shoji. - High-resolution echo facies analysis of glacial-marine deposits in the Bransfield Basin, Antarctica / S. H. Yoon, H. I. Yoon and J. Howe. - Characteristics of Beach sands, King George Island, West Antarctica / Tae Jin Choi, Yong Il Lee and Ho Il Yoon. - Transition from debris flow to hyperconcentrated flow in a submarine channel (the Cretaceous Cerro Toro Formation, Southern Chile) / Y. K. Sohn, M. Y. Choe, and H. R. Jo. - Chemical weathering of glacial debris and volcanic ash in King George Island, Antarctica / Gi Young Jeong and Bong Ho Lee. - The cenozoic sedimentary records found in the Grove Mountains, East Antarctica and their climatic implications / Aimin Fang, Xiaohan Liu, Xiaoli Li, Jong Ik Lee, Yitai Ju and Feixin Huang. - The pollen assemblages found in the cenozoic sedimentary rocks in Grove Mountains, East Antarctica / Aimin Fang, Xiaohan Liu, Xiaoli Li, Yitai Ju and Weimin W
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  • 33
    Call number: AWI G2-18-91973
    Type of Medium: Monograph available for loan
    Pages: 49 Seiten , Illustrationen
    Language: English
    Note: Table of Contents: Introduction. - Contact information. - List of participants. - Guidelines for presenters. - Registration. - Workshop program. - Hotel and workshop venues. - Travel information. - Abstracts. - Public lecture.
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  • 34
    Call number: AWI G1-19-92116
    Type of Medium: Monograph available for loan
    Pages: 85 Blatt , Illustrationen
    Language: English , German , Spanish
    Note: Beiträge teilweise Deutsch, teilweise Englisch, teilweise Spanisch
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  • 35
    Monograph available for loan
    Monograph available for loan
    [London] : Natural Environment Research Council
    Call number: AWI P6-19-92115
    Type of Medium: Monograph available for loan
    Pages: 27 Seiten , Illustrationen
    ISBN: 0-85665-1354 , 0-85665-135-4
    Language: English
    Note: Contents: PART 1: INTRODUCTION AND BACKGROUND. - ANTARCTICA - THE REGION AND ITS GLOBAL IMPORTANCE. - ANTARCTICA - THE SCIENTIFIC OPPORTUNITY AND CHALLENGE. - ANTARCTICA - THE INTERNATIONAL CONTEXT. - ANTARCTICA - ITS SCIENCE AS A NATIONAL RESOURCE. - ANTARCTICA - SOME IMPORTANT BENEFITS FROM RESEARCH. - PART 2: STRATEGY FOR BAS SCIENCE. - INTRODUCTION. - SCIENCE THEMES. - Pattern and Change in the Physical Environment of Antarctica. - Atmospheric Dynamics in the Antarctic. - Ice and Atmosphere Chemistry. - Dynamics of the West Antarctic Ice Sheet. - Evolution of Late Mesozoic and Cenozoic Palaeoenvironments. - Southern Ocean Palaeo-Oceanography and Palaeoclimate. - Geological Evolution of West Antarctica. - West Antarctic Crustal Development and Plate Tectonic Evolution. - Subduction-related Processes. - Dynamics of Antarctic Terrestrial and Freshwater Ecosystems. - Survival Strategies. - Ecosystems and Conservation. - Structure and Dynamics of the Southern Ocean Ecosystem. - Pelagic Ecosystem Studies. - Higher Predators. - Ecological and Physiological Adaptations. - Physics of Solar Terrestrial Phenomena from Antarctica. - Radio Wave Generation and Propagation. - Energy Flow and Dissipation within Geospace. - Humans In Isolated Polar Communities. - Antarctic Geographic Information and Mapping. - LOGISTICS REQUIREMENTS. - TIMEFRAME OF ACTIVITIES. - PART 3: STRATEGY FOR NERC SCIENCE PROGRAMMES OTHER THAN BAS. - INTRODUCTION. - NERC STRATEGY FOR THE ENVIRONMENTAL SCIENCES. - Earth Sciences. - Marine Sciences. - Terrestrial and Freshwater Sciences. - Atmospheric Sciences. - THE ROLE OF THE UNIVERSITIES AND POLYTECHNICS AND THE ANTARCTIC SPECIAL TOPIC. - LOGISTICS. - PRIVATE SECTOR/INDUSTRIAL COLLABORATION. - PART 4: CONCLUSION.
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  • 36
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [s.n.]
    Call number: AWI G7-19-92129
    Type of Medium: Monograph available for loan
    Pages: 62 Seiten , Illustrationen
    Edition: Draft
    Language: English
    Note: CONTENTS: Flight plan 1996. - C130 schedule. - NGRIP 1996 Schedule. - Overview of 1996 schedule. - Camp Layout. - Buildings. - Number of field participants. - NGRIP 1996 Sub programs. - CARDS Radar test. - KMS Elevation measurements. - SITREP. - Terms of Reference during the field operation. - Accidents and Illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 1996. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NGRIP camp load. - Kangerlussuaq and Surrounding Area. - Thule Air Base, Greenland, Base Operations. - Other useful information for Thule passengers. - Uplift 1996. - Typical specs for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan. - Summary of frequencies used in Greenland. - Phonetic alphabet. - Personal field equipment. - Map of GRIP camp. - NGRIP, Maps of one and two line set up. - NGRIP trenches. - Map of Greenland. - Map of north Greenland. - Map of ice divide north of GRIP. - Map of magnetic declination in Greenland. - Positions in Greenland. - Relevant distances and directions. - 1996 Twin Otter hours. - List of NGRIP addresses.
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  • 37
    Call number: ZSP-SCAR-570-8
    In: National Antarctic Research Report to SCAR, No. 8
    Type of Medium: Series available for loan
    Pages: 33 Seiten
    ISSN: 0179-0072
    Series Statement: National Antarctic Research Report to SCAR 8
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Members of Permanent Working Groups and Groups of Specialists of SCAR. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 1985 - October 1986. - II. Planned Activities, October 1986 - October 1987. - References. - Addenda to Former Reports. - Index of Activities.
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  • 38
    Call number: ZSP-SCAR-570-7
    In: National Antarctic Research Report to SCAR, No. 7
    Type of Medium: Series available for loan
    Pages: 37 Seiten , 2 Beilagen
    ISSN: 0179-0072
    Series Statement: National Antarctic Research Report to SCAR 7
    Language: English
    Note: 1 Kartenbeilage unter dem Titel: Neuschwabenland (West) 〈1 : 2.000.000〉, Bildflugroutenübersicht Antarktis-Expediton 1983/84 = Aerial Survey Route Map. - 2. Ausgabe. - Frankfurt am Main : Institut für Angewandte Geodäsie (IfAG), 1985. , 1 Beilage unter dem Titel: Supplement to National Antarctic Research Report to SCAR, No. 7 (July 1985) , Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Members of Permanent Working Groups and Groups of Specialists of SCAR. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 84-October 85. - II. Planned Activities, October 1985 - October 1986. - References. - Addenda to Former Reports. - Index of Activities.
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  • 39
    Call number: ZSP-SCAR-570-4
    In: National Antarctic Research Report to SCAR, No. 4
    Type of Medium: Series available for loan
    Pages: 24 Seiten
    ISSN: 0179-0072
    Series Statement: National Antarctic Research Report to SCAR 4
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 81-October 82. - II. Planned Activities, October 82-October 83. - References.
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  • 40
    Call number: ZSP-SCAR-570-3
    In: National Antarctic Research Report to SCAR, No. 3
    Type of Medium: Series available for loan
    Pages: 16 Seiten
    ISSN: 0179-0072
    Series Statement: National Antarctic Research Report to SCAR 3
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 80-October 81. - II. Planned Activities, October 81-October 82. - References.
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  • 41
    Call number: ZSP-SCAR-570-2
    In: Report to SCAR on Antarctic research activities of Germany (FRG), 2
    Type of Medium: Series available for loan
    Pages: 16 Seiten
    ISSN: 0179-0072
    Series Statement: Report to SCAR on Antarctic research activities of Germany (FRG) 2
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research of the Federal Republic of Germany. - Introduction. - Station. - Antarctic Research Activities 1979-1980. - Planned Research Activities 1980-1981. - References.
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  • 42
    Call number: ZSP-SCAR-570-1
    In: Report to SCAR on Antarctic research activities of Germany (FRG), 1
    Type of Medium: Series available for loan
    Pages: 21 Seiten
    ISSN: 0179-0072
    Series Statement: Report to SCAR on Antarctic research activities of Germany (FRG) 1
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research of the Federal Republic of Germany. - Introduction. - Station. - Field Activities 1974-1979. - Planned Activities 1979/80. - References.
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  • 43
    Monograph available for loan
    Monograph available for loan
    [Erscheinungsort nicht ermittelbar] : [Verlag nicht ermittelbar]
    Call number: AWI P2-19-92186
    Type of Medium: Monograph available for loan
    Pages: 23 Seiten
    Language: English
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  • 44
    Call number: AWI P1-19-92149
    In: Polar Research
    Type of Medium: Monograph available for loan
    Pages: 142 Seiten , Illustrationen
    ISSN: 0800-0395
    Series Statement: Polar Research 19,1
    Language: English
    Note: Contents: Preface / Helle V. Goldman, Bruce Forbes & Gary Kofinas. - Research planning in the face of change: the human role in reindeer/caribou systems / Gary Kofinas, Gail Osherenko, David Klein & Bruce Forbes. - Reindeer husbandry/hunting in Russia in the past, present and future / Leonid M. Baskin. - Chukotkan reindeer husbandry in the post-socialist transition / Patty A. Gray. - Nenets reindeer herders on the lower Yenisei River: traditional economy under current conditions are responses to economic change / Konstantin B. Klokov. - Reindeer pastoralism in modern Siberia: research and survival during the time of crash / Igor Krupnik. - Managing reindeer and wildlife on Alaska's Seward Peninsula / Jim Dau. - Response of reindeer and caribou to human activities / Scott A. Wolfe, Brad Griffith & Carrie A. Gray Wolfe. - High voltage transmission lines and their effect on reindeer: a research programme in progress / Eigil Reimers, Kjetil Flydal & Rune Stenseth. - Responses of West Greenland caribou to the approach of humans on foot / Peter Aastrup. - Arctic grazing systems and industrial development: can we minimize conflicts? / David R. Klein. - Regional effects of climate change on reindeer: a case study of the Muotkatunturi region in Finnish Lapland / Susan E. Lee, Malcolm C. Press, John A. Lee, Tim Ingold & Terhi Kurttila. - Reindeer in tundra ecosystems: the challenges of understanding system complexity / Feodor V. Kryazhimskii & Alexey N. Danilov. - Status, directions and priorities of reindeer husbandry research in Sweden / Öje Danell. - Need and opportunity for a North American caribou knowledge cooperative / Don Russell, Gary Kofinas & Brad Griffith. - Native reindeer herders' priorities for research / Johan Mathis Turi. - Letter from Varandei / Andrei V. Golovnev.
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  • 45
    Call number: AWI A13-19-92152
    In: HIRLAM technical report, No. 60
    Type of Medium: Series available for loan
    Pages: 69 Seiten , Illustrationen
    Series Statement: HIRLAM technical report 60
    Language: English
    Note: Contents: 1 Background. - 2 Processing overview. - 2.1 AAPP. - 2.2 BUFR and CMA. - 2.3 Cloud mask and thinning in HIRLAM 3D-VAR. - 2.4 Radiative transfer calculations. - 2.5 Data selection. - 3 Bias correction and error statistics. - 3.1 The need for bias correction. - 3.2 Bias correction method. - 3.3 Background errors in observation space. - 3.4 Estimation of observation error covariance statistics. - 3.4.1 Rotated channels. - 3.4.2 Estimation from analysis departures (DNMI). - 3.4.3 Non-diagonal cost contributions. - 3.4.4 Approach using comparison with background error (SMHI). - 4 Impact studies. - 4.1 Overview. - 4.2 The May 2001 impact study at DNMI. - 4.3 December 1999 SMHI experiment. - 4.3.1 Data coverage and model area. - 4.3.2 Verification. - 4.3.3 Results. - 4.3.4 The "French storm". - 4.4 December 2001 NOAA 16 impact study at DMI. - 4.5 January 2002 NOAA 16 impact study at DMI. - 5 Ongoing and future work. - 5.1 Overview. - 5.2 Use of observations over ice. - 5.3 Moisture channels. - 5.4 Future sensors. - 6 Conclusions and outlook for the future. - Acknowledgment. - References.
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  • 46
    Series available for loan
    Series available for loan
    Norrköping : HIRLAM-5 Projekt, SMHI
    Associated volumes
    Call number: AWI A13-19-92153
    In: HIRLAM newsletter, No. 41
    Type of Medium: Series available for loan
    Pages: 174 Seiten , Illustrationen
    Series Statement: HIRLAM newsletter 41
    Language: English
    Note: CONTENTS: Introduction - All Staff meeting 2002 / Per Undén. - Report of Hirlam Management Group visit to Met Éireann / Per Undén. - The operational HIRLAM at the Finnish Meteorological Institute / Kalle Eerola. - Recent changes in the operational suites at Météo-France / Dominique Giard. - HIRLAM operational activities in Met Éireann / Ray McGrath. - Operational HIRLAM at met.no / Ole Vignes. - SMHI operational HIRLAM systems / Lars Meuller. - Revision of the ECMWF humidity analysis 1: Construction of a gaussian control variable / Elías Valur Hólm. - A nudging procedure to assimilate analyses of cloud and precipitation in a version of HIRLAM / Bent Hansen Sass and Claus Petersen. - HIRLAM 4DVAR / Xiang-Yu Huang, Xiaohua Yang, Nils Gustafsson, Kristian Mogensen and Magnus Lindskog. - Progress in the investigation of problems in the operational 4d-var assimilation at Météo-France / Dominique Giard. - Recent and future developments in the turbulence modeling in HIRLAM / Geert Lenderink. - Parametrization of the effects of subgrid-scale orography / Laura Rontu and Kai Sattler. - ISBA tests in a Nordic area - an update / Simo Järvenoja. - Results of the SAT-MAP-CLIMATE project / Niels Woetmann Nielsen, Charlotte Hasager, Henrik Søgaard, Jens H Chrisensen, Niels Otto Jensen and Eva Bøgh. - Progress and problems in the Functional Boxes / Erik Bazile. - Status Kain Fritsch Rash Kristjansson and Hirlam 22 km experiences / Sander Tijm, Roy Wichink, Oscar van de Velde, Ben Wichers Schreur and Toon Moene. - The representation of shallow cumulus convection and associated cloud fields in the Rossby Centre Atmospheric modell / Colin Jones and Enrique Sanchez. - Parametrization of mountain-related effects in fine-scale HIRLAM - items for discussion / Laura Rontu. - Testing alternative lateral boundary strategies: A progress report / Aidan McDonald. - Current situation with the NH HIRLAM / Aarne Mannik and Rein Room. - Manipulations to determine the hybrid coordinate in HIRLAM / Per Undén and Nils Gustafsson. - Comparison of convection and condensation schemes under non-hydrostatic Hirlam model: A case study / Sami Niemela and Carl Fortelius. - Real time solution of forward and inverse air pollution problems with a numerical dispersion model based on short-term weather forecasts / Mikhail Sofiev. - Asyncronous I/O in HIRLAM / Ole Vignes. - HIRLAM coding styles / Gerard Cats. - NWP on a GRID compute environment / Gerard Cats. - HIRLAM verification scores, 1st quarter 2002 / Per Undén. - Validation test for HIRLAM 5.1.4: winter condition / Xiaohua Yang. - Recent tests of proposed revisions to the STRACO cloud scheme / Bent Hansen Sass and Xiaohua Yang.
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  • 47
    Series available for loan
    Series available for loan
    Boulder, Colo. : University Corp. for Atmospheric Research
    Call number: AWI A1-19-92163
    Description / Table of Contents: "Our changing climate is the fourth in a series of publication on climate and global change intended for public education. The documents are a collaborative effort of the UCAR Joint Office for Science Support and NOAA Office of Global Programs, for the purpose of raising the level of public awareness of issues dealing with global environmental change."
    Type of Medium: Series available for loan
    Pages: 24 Seiten , Illustrationen , 28 cm
    Series Statement: Reports to the nation on our changing planet 4
    Language: English
    Note: Table of Contents: Climate and American People. - Earth's climate: A dynamic system. - Why does earth's climate change?. - Can we change the climate?. - The Greenhouse Effect. - Why are Greenhouse gas amounts increasing?. - Aerosols: Sunscreen for the planet?. - How has climate changed in the past century?. - Can we predict climate change?. - What do climate models tell us about our future?. - Where do we go from here?
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  • 48
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [s.n.]
    Call number: AWI G7-19-91941
    Type of Medium: Monograph available for loan
    Pages: 71 Seiten , Illustrationen
    Language: English
    Note: CONTENTS: Flight plan 1999. - LC130 schedule. - NGRIP 1999 schedule. - Overview of 1999 schedule. - Quartering and buildings. - Number of field participants. - NGRIP 2000 sub programs. - SITREP. - Term of reference for the NGRIP field work. - Accidents and illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 2000. - NGRIP documentation. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NGRIP camp load. - Kangerlussuaq and the surrounding area. - Thule Air Base, Greenland, Base Operations. - Uplift 2000. - Typical specifications for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan and frequencies used. - Phonetic alphabet. - Personal field equipment. - Operation of Thrane & Thrane STDC telex terminal. - Operation of NERA lnmarsat M terminal. - Map of NGRIP camp (not all updated). - NGRIP inclined pit and trenches (not updated). - Map of NGRIP Region. - Map of Greenland and North Greenland. - Map of skiway and local topography. - Ice divide North of NGRIP. - Map of the magnetic declination in Greenland. - Glycol specification. - Density vs temperature of hole liquid. - Positions in Greenland, distances and directions. - List of NGRIP addresses.
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  • 49
    Call number: AWI G7-19-92378
    Type of Medium: Dissertations
    Pages: 1 Band (verschiedene Seitenzählungen) , Illustrationen
    ISSN: 1400-3813
    Series Statement: Earth Sciences Centre, Göteborg University : A 77
    Language: English
    Note: Enthält 5 Zeitschriftenaufsätze , Dissertation, Göteborgs Universitet, 2002 , Table of Contents: Introduction Methods Summary of Papers Paper I Paper II Paper III Paper IV Paper V Conclusions and discussion Acknowledgements References Appendices Paper I: Late Quaternary stratigraphy of western Yamal Peninsula, Russia : new constraints on the configuration of the Eurasian ice sheet / Forman, S. L., Ingólfson, Ó., Gataullin, V., Manley, W. F., Lokrantz, H. Paper II: Late Quaternary stratigraphy, glacial limits and paleoenvironments of the Maresale area, western Yamal Peninsula, Russia / Forman, S. L., Ingólfson, Ó., Gataullin, V., Manley, W. F., Lokrantz, H. Paper III: Late Quaternary stratigraphy, Radiocarbon Chronology, and Glacial History at Cape Shpindler, Southern Kara Sea, Arctic Russia / Manley, W. F., Lokrantz, H., Gataullin, V., Ingólfson, Ó., Andersson, T. Paper IV: Glaciotectonised Quaternary sediments at Cape Shpindler, Yugorski Peninsula, Arctic Russia : implications of glacial history, ice movements and Kara Sea Ice Sheet configuration / Lokrantz, H., Ingólfson, Ó. and Forman, S. L. Paper V: Origin of a massive ground ice body on Yugorski Peninsula, Arctic Russia : buried glacier ice or intrasedimental segregation ice? / Lokrantz, H. and Ingólfson, Ó.
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  • 50
    Series available for loan
    Series available for loan
    Zurich : Cryospheric Commission of the Swiss Academy of Sciences (SCNAT)
    Associated volumes
    Call number: AWI G3-19-92381
    In: Permafrost in Switzerland, 2004/2005 and 2005/2006
    Type of Medium: Series available for loan
    Pages: XIV, 100 Seiten , Illustrationen
    Series Statement: Glaciological Report (Permafrost) / Permafrost Monitoring Switzerland 6/7
    Language: English
    Note: Contents: Imprint Published Reports Preface Summary Zusammenfassung Résumé Riassunto Resumaziun 1 Introduction 2 Weather and Climate 2.1 Weather and Climate in 2004/2005 2.2 Weather and Climate in 2005/2006 2.3 Climate Deviation from the Mean Value 1961–1990 2.4 Duration of the Snow Cover 3 Borehole Measurements 3.1 Active Layer Thickness 3.2 Permafrost Temperatures 3.2 ERT Monitoring Network 3.4 Conclusions Boreholes 4 Surface Temperatures 4.1 Surface Temperatures in Unconsolidated Sediments 4.2 Rock Surface Temperatures 4.3 Conclusions Surface Temperatures 5 Air Photos 5.1 Air Photos in 2004/2005 and 2005/2006 6 Conclusion 7 Selected Aspects of Permafrost Monitoring 7.1 Short-term Variations in Rock Glacier Kinematics 7.2 Destabilized Rock Glaciers 7.3 Conclusions Rock Glacier Dynamics Acknowledgements References Appendix
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  • 51
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [Verlag nicht ermittelbar]
    Call number: AWI G7-19-92326
    Type of Medium: Monograph available for loan
    Pages: 59 Seiten , Illustrationen
    Language: English
    Note: CONTENTS: Report on the 1995 activities of GRIP Operation Center (GOC). - Objective. - Kangerlussuaq (Søndre Strømfjord). - Preparation of field season. - Start of field season. - Communication. - Medevac. - Acknowledgement. - 1995 Field Season, Diary. - Maintenance / Logistics. - Bulk supplies. - Table of C130 flights. - Table of Twin Otter flights. - List of participants. - GRIP 1995 sub programs. - GRIP summaries 1989-1995. - GOC documentation 1989-1994. - Sitreps. - Daily reports from DOME GRIP. - Map of Northern Greenland. - List of GRIP addresses. - Tasks of GOC.
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  • 52
    Call number: AWI G3-19-92383
    Description / Table of Contents: In ice-rich permafrost regions, changes in the permafrost thermal regime cause surface disturbances. These changes are amplified by the increase in air temperatures recorded in the Arctic in the past decades. Thermokarst is a process that leads to surface subsidence and formation of characteristic landforms following thawing of ice-rich permafrost or melting of massive ice. Thermokarst is widespread on hillslopes and the number of associated landforms is increasing in the Arctic. Through this process large amounts of material are eroded and transported to the sea or accumulate along hillslopes. While hillslope thermokarst modifies terrestrial and aquatic ecosystems, there is limited understanding of its environmental impact at a regional scale. In this thesis we quantify the environmental impacts of hillslope thermokarst on the valley and nearshore ecosystems along the Yukon Coast, Canada. Using supervised machine learning, we identified geomorphic factors that favour the development of coastal retrogressive thaw slump (RTS), one of the most dynamic hillslope thermokarst landform. Coastal geomorphology and ground ice type and content play a major role in RTS occurrence. Using aerial photographs and satellite imagery, we traced the evolution of RTSs between 1952 and 2011. During this time, the number and areal coverage of RTSs increased by 73%. RTSs eroded and partly released to the nearshore zone organic carbon contained in millions of cubic meters of material. Our results show that 56% of the RTSs identified along the coast in 2011 have eroded 16.6 × 10^6 m3 of material; a large part (45%) was transported alongshore due to coastal processes. Moreover, we show that RTSs are a major contributor to the carbon budget in the nearshore ecosystem: 17% of the coastal RTSs identified in 2011 contributed annually up to 0.6% of the organic carbon released by coastal retreat along the Yukon Coast. To assess the impact of hillslope thermokarst on the terrestrial ecosystem, we measured the spatial distribution of soil organic carbon (SOC) and total nitrogen (TN) along hillslopes in three Arctic valleys. We highlight the high spatial variability in the distribution of SOC and TN in the valleys. This distribution is caused by complex soil processes occurring along the hillslopes. Hillslope thermokarst impacts the degradation of organic matter and affects the storage of SOC and TN.
    Type of Medium: Dissertations
    Pages: xvii, 103 Seiten , Illustrationen
    Language: English
    Note: Dissertation, Universität Potsdam, 2018 , Contents Acknowledgements Abstract (English/Deutsch/Français) List of figures List of tables 1 Introduction 1.1 Scientic background 1.1.1 The Arctic coast, permafrost and climate change 1.1.2 Organic carbon in permafrost soils 1.1.3 Hillslope thermokarst processes 1.2 Aims 1.3 Study region 1.4 Methods 1.4.1 Mapping 1.4.2 Spline interpolation and volumes estimations 1.4.3 Fieldwork 1.4.4 Geochemical analyses 1.4.5 Statistical analyses 1.5 Thesis outline 1.6 Authors’ contributions 2 Synthesis 2.1 Retrogressive thaw slumps are widely spread in ice-rich permafrost areas 2.2 Retrogressive thaw slumps contribute signicantly to the nearshore or-ganic carbon 2.3 Thermokarst impacts the distribution of soil organic carbon along hill-slopes 2.4 Outlook . 3 Terrain Controls on the Occurrence of Coastal RTSs 3.1 Abstract 3.2 Introduction 3.3 Study area 3.4 Methods 3.4.1 Mapping of retrogressive thaw slumps and landform classication 3.4.2 Environmental variables 3.4.3 Univariate regression trees 3.5 Results 3.5.1 Characteristics of retrogressive thaw slumps 3.5.2 Density and areal coverage of retrogressive thaw slumps 3.6 Discussion 3.6.1 Characteristics and distribution of retrogressive thaw slumps 3.6.2 Terrain factors explaining retrogressive thaw slump occurrence 3.6.3 Coastal Processes 3.7 Conclusion 4 RTSs release sediments and organic carbon into the Arctic Ocean 4.1 Abstract 4.2 Introduction 4.3 Study Area 4.4 Methods 4.4.1 Evolution of retrogressive thaw slumps 4.4.2 Volume Estimations 4.4.3 Estimates of soil and dissolved organic carbon values 4.5 Results 4.5.1 Evolution of retrogressive thaw slumps between 1952 and 2011 4.5.2 Eroded material and estimated amount of mobilized SOC and DOC 4.6 Discussion 4.6.1 Increase in slump activity 4.6.2 Eroded material from retrogressive thaw slumps and organic car-bon uxes 4.6.3 Impact of retrogressive thaw slumps on the coastal ecosystem 4.7 Conclusion 5 Snapshot of carbon and nitrogen distribution in Arctic valleys 5.1 Abstract 5.2 Introduction 5.3 Study Area 5.4 Methods 5.4.1 Spatial analyses 5.4.2 Sampling Scheme 5.4.3 Geochemical analyses 5.4.4 Environmental variables and statistical analyses 5.5 Results 5.5.1 Geomorphology of the valleys 5.5.2 Spatial distribution of carbon and nitrogen 5.5.3 Correlations between soil characteristics and geochemical variables 5.6 Discussion 5.6.1 Variability in soil and geochemical properties in Arctic valleys 5.6.2 Hillslope Processes 5.7 Conclusion 6 Eidessttatliche Erklärung A Appendix A.1 Chapter 3 A.2 Chapter 4 A.3 Chapter 5 Bibliography
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  • 53
    Monograph available for loan
    Monograph available for loan
    Oslo : Arctic Monitoring and Assessment Programme (AMAP)
    Call number: AWI G3-19-92396
    Type of Medium: Monograph available for loan
    Pages: 97 Seiten , Illustrationen
    ISBN: 978-82-7971-073-8
    Language: English
    Note: Contents: What has changed since the Arctic Climate Impact Assessment in 2005? Part 1. How the Arctic cryosphere is changing 1.1. The Arctic cryosphere 1.2. Monitoring change in the Arctic cryosphere 1.3. Snow cover is decreasing 1.4. Permafrost is thawing 1.5. Lakes and rivers are losing ice cover 1.6. Mountain glaciers, ice caps and the Greenland Ice Sheet are all diminishing 1.7. Summer sea-ice cover has declined dramatically Part 2. Why the Arctic cryosphere is changing 2.1. The Arctic climate is changing 2.2. The cryosphere interacts with other aspects of climate Part 3. More change is expected. Where in the Arctic? 3.1. Modelling the future 3.2. Future changes in temperature, rain and snowfall 3.3. Future changes in snow, permafrost, lake and river ice 3.4. Future changes in mountain glaciers, ice caps and the Greenland Ice Sheet 3.5. Future changes in sea ice Part 4. How these changes affect people and nature. Where in the Arctic? 4.1. Changing Arctic ecosystems 4.2. Changing supplies of natural resources 4.3. Changing access 4.4. Changing risks to buildings and land 4.5. Changing movement of contaminants 4.6. Changing Arctic living conditions Part 5. Why changes in the Arctic matter globally 5.1. Changes in the Arctic cryosphere affect the global climate 5.2. Melting Arctic land ice contributes to sea-level rise 5.3. Consequences for global society Part 6. What should be done? 6.1. Adapting to change 6.2. The big unknowns Glossary.
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  • 54
    Call number: AWI G3-19-92384
    Description / Table of Contents: Widespread landscape changes are presently observed in the Arctic and are most likely to accelerate in the future, in particular in permafrost regions which are sensitive to climate warming. To assess current and future developments, it is crucial to understand past environmental dynamics in these landscapes. Causes and interactions of environmental variability can hardly be resolved by instrumental records covering modern time scales. However, long-term environmental variability is recorded in paleoenvironmental archives. Lake sediments are important archives that allow reconstruction of local limnogeological processes as well as past environmental changes driven directly or indirectly by climate dynamics. This study aims at reconstructing Late Quaternary permafrost and thermokarst dynamics in central-eastern Beringia, the terrestrial land mass connecting Eurasia and North America during glacial sea-level low stands. In order to investigate development, processes and influence of thermokarst dynamics, several sediment cores from extant lakes and drained lake basins were analyzed to answer the following research questions: 1. When did permafrost degradation and thermokarst lake development take place and what were enhancing and inhibiting environmental factors? 2. What are the dominant processes during thermokarst lake development and how are they reflected in proxy records? 3. How did, and still do, thermokarst dynamics contribute to the inventory and properties of organic matter in sediments and the carbon cycle? Methods applied in this study are based upon a multi-proxy approach combining sedimentological, geochemical, geochronological, and micropaleontological analyses, as well as analyses of stable isotopes and hydrochemistry of pore-water and ice. Modern field observations of water quality and basin morphometrics complete the environmental investigations. The investigated sediment cores reveal permafrost degradation and thermokarst dynamics on different time scales. The analysis of a sediment core from GG basin on the northern Seward Peninsula (Alaska) shows prevalent terrestrial accumulation of yedoma throughout the Early to Mid Wisconsin with intermediate wet conditions at around 44.5 to 41.5 ka BP. This first wetland development was terminated by the accumulation of a 1-meter-thick airfall tephra most likely originating from the South Killeak Maar eruption at 42 ka BP. A depositional hiatus between 22.5 and 0.23 ka BP may indicate thermokarst lake formation in the surrounding of the site which forms a yedoma upland till today. The thermokarst lake forming GG basin initiated 230 ± 30 cal a BP and drained in Spring 2005 AD. Four years after drainage the lake talik was still unfrozen below 268 cm depth. A permafrost core from Mama Rhonda basin on the northern Seward Peninsula preserved a full lacustrine record including several lake phases. The first lake generation developed at 11.8 cal ka BP during the Lateglacial-Early Holocene transition; its old basin (Grandma Rhonda) is still partially preserved at the southern margin of the study basin. Around 9.0 cal ka BP a shallow and more dynamic thermokarst lake developed with actively eroding shorelines and potentially intermediate shallow water or wetland phases (Mama Rhonda). Mama Rhonda lake drainage at 1.1 cal ka BP was followed by gradual accumulation of terrestrial peat and top-down refreezing of the lake talik. A significant lower organic carbon content was measured in Grandma Rhonda deposits (mean TOC of 2.5 wt%) than in Mama Rhonda deposits (mean TOC of 7.9 wt%) highlighting the impact of thermokarst dynamics on biogeochemical cycling in different lake generations by thawing and mobilization of organic carbon into the lake system. Proximal and distal sediment cores from Peatball Lake on the Arctic Coastal Plain of Alaska revealed young thermokarst dynamics since about 1,400 years along a depositional gradient based on reconstructions from shoreline expansion rates and absolute dating results. After its initiation as a remnant pond of a previous drained lake basin, a rapidly deepening lake with increasing oxygenation of the water column is evident from laminated sediments, and higher Fe/Ti and Fe/S ratios in the sediment. The sediment record archived characterizing shifts in depositional regimes and sediment sources from upland deposits and re-deposited sediments from drained thaw lake basins depending on the gradually changing shoreline configuration. These changes are evident from alternating organic inputs into the lake system which highlights the potential for thermokarst lakes to recycle old carbon from degrading permafrost deposits of its catchment. The lake sediment record from Herschel Island in the Yukon (Canada) covers the full Holocene period. After its initiation as a thermokarst lake at 11.7 cal ka BP and intense thermokarst activity until 10.0 cal ka BP, the steady sedimentation was interrupted by a depositional hiatus at 1.6 cal ka BP which likely resulted from lake drainage or allochthonous slumping due to collapsing shore lines. The specific setting of the lake on a push moraine composed of marine deposits is reflected in the sedimentary record. Freshening of the maturing lake is indicated by decreasing electrical conductivity in pore-water. Alternation of marine to freshwater ostracods and foraminifera confirms decreasing salinity as well but also reflects episodical re-deposition of allochthonous marine sediments. Based on permafrost and lacustrine sediment records, this thesis shows examples of the Late Quaternary evolution of typical Arctic permafrost landscapes in central-eastern Beringia and the complex interaction of local disturbance processes, regional environmental dynamics and global climate patterns. This study confirms that thermokarst lakes are important agents of organic matter recycling in complex and continuously changing landscapes.
    Type of Medium: Dissertations
    Pages: XII, 128 Seiten , Illustrationen , 1 DVD
    Language: English
    Note: Enthält 5 Publikationen: 1) Mid Wisconsin to Holocene permafrost and landscape dynamics based on a drained lake basin core from the northern Seward Peninsula, northwest Alaska / Josefine Lenz, Guido Grosse, Benjamin M. Jones [und 5 weitere] 2) Evidence of multiple thermokarst lake generations from an 11,800-year old permafrost core on the northern Seward Peninsula, Alaska / Josefine Lenz, Sebastian Wetterich, Benjamin M. Jones [und 3 weitere] 3) Impacts of shore expansion and catchment characteristics on lacustrine thermokarst records in permafrost lowlands, Alaska Arctic Coastal Plain / Josefine Lenz, Sebastian Wetterich, Benjamin M. Jones [und 5 weitere] 4) Periglacial landscape dynamics in the western Canadian Arctic: Results from a thermokarst lake record on a push moraine (Herschel Island, Yukon) / Josefine Lenz, Michael Fritz, Lutz Schirrmeister [und 4 weitere] 5) Regional environmental change versus local signal preservation in Holocene thermokarst lake sediments: A case study from Herschel Island, Yukon (Canada) / Michael Fritz, Ingmar Unkel, Josefine Lenz [und 6 weitere] , Table of contents Abstract Zusammenfassung Abbreviations and nomenclature 1 Thesis organization 1.1 Overview of chapters 1.2 Author contribution 2 Introduction 2.1 Scientific background 2.1.1 Arctic environments and permafrost in the study region of Beringia 2.1.2 Permafrost degradation and its global feedbacks 2.1.3 Thermokarst lakes and basins as paleoenvironmental archives 2.2 Aims and approaches 3 Mid Wisconsin to Holocene permafrost and landscape dynamics based on a drained lake basin core from the northern Seward Peninsula, northwest Alaska 3.1 Abstract 3.2 Introduction 3.3 Study area 3.4 Material and methods 3.5 Results 3.5.1 Core stratigraphy 3.5.2 Cryostratigraphy 3.5.3 Grain size distribution 3.5.4 Magnetic susceptibility 3.5.5 Biogeochemical characteristics 3.5.6 Tephra 3.5.7 Palaeoecology 3.5.8 Geochronology 3.6 Discussion 3.7 Conclusions 4 Evidence of multiple thermokarst lake generations from an 11,800-year old permafrost core on the northern Seward Peninsula, Alaska 4.1 Abstract 4.2 Introduction 4.3 Study area 4.4 Material and methods 4.5 Results 4.5.1 Geochronology 4.5.2 Cryolithological description 4.5.3 Geochemical results 4.5.4 Bioindicators 4.5.5 Characteristics of intra-sedimentary ice and comparison with modern waters 4.6 Discussion 4.6.1 Thermokarst lake dynamics 4.6.2 Regional lake dynamics and global environmental change 4.6.3 Carbon cycling 4.7 Conclusions 5 Impacts of shore expansion and catchment characteristics on lacustrine thermokarst records in permafrost lowlands, Alaska Arctic Coastal Plain 5.1 Abstract 5.2 Introduction 5.3 Study area 5.4 Material and methods 5.5 Results 5.5.1 Sedimentological results of near-shore core P1 5.5.2 Sedimentological and palynological results of lake center-cores P2 (and P3) 5.5.3 Lake age estimation 5.6 Discussion 5.6.1 Thermokarst lake development 5.6.2 Impact of catchment genesis and morphology on the lake sediment record 5.6.3 Carbon degradation 5.7 Conclusions 6 Synthesis 6.1 Study sites in central-eastern Beringia: Similarities and differences 6.2 Permafrost degradation and thermokarst development in central-eastern Beringia 6.2.1 Timing of thermokarst development 6.2.2 Environmental factors supporting and inhibiting thermokarst 6.3 Processes of thermokarst lake development and their imprint in proxy records 6.4 Contribution of thermokarst dynamics to the carbon cycle 6.5 Potentials/limitations of thermokarst lake archives and outlook Bibliography Appendix I: Periglacial landscape dynamics in the western Canadian Arctic: Results from a thermokarst lake record on a push moraine (Herschel Island, Yukon) I-1 Abstract I-2 Introduction I-3 Study area I-4 Material and methods I-5 Results I-5.1 Core lithology I-5.2 Radiography I-5.3 Magnetic susceptibility and water content I-5.4 Grain size distribution I-5.5 Biogeochemical characteristics I-5.6 Geochronology I-6 Discussion I-6.1 Evolution of Lake Herschel I-6.2 Paleoenvironmental implications of the Lake Herschel record I-7 Conclusions Appendix II: Regional environmental change versus local signal preservation in Holocene thermokarst lake sediments: A case study from Herschel Island, Yukon (Canada) II-1 Abstract II-2 Introduction and study area II-3 Material and methods II-3.1 Sediment core II-3.2 Radiocarbon dating and age modelling II-3.3 Pore-water chemistry II-3.4 X-ray fluorescence (XRF) scanning II-3.5 Micropaleontology II-4 Results II-4.1 Chronostratigraphy: The revised age model II-4.2 XRF chemistry II-4.3 Pore-water chemistry II-4.4 Calcareous microfossils II-4.5 Pollen II-5 Discussion II-5.1 Sedimentation history of Lake Herschel II-5.2 Limnological, sedimentary and geochemical properties predefine the habitat I-5.3 Autochthonous versus allochthonous deposition of calcareous microfossils II-5.4 Regional pollen-based reconstruction of vegetation and climate II-6 Conclusions Acknowledgements
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  • 55
    Monograph available for loan
    Monograph available for loan
    [Potsdam] : Academy of Sciences of the German Democratic Republic, Central Institute for Physics of the Earth, National Committee on Antarctic Research of the G.D.R.
    Call number: AWI P6-19-92271
    Type of Medium: Monograph available for loan
    Pages: 60 Seiten , 2 Beilagen
    Language: English
    Note: Beilage unter dem Titel: Symposium on Antarctic Research : Potsdam, G.D.R. September 11-14, 1989 ; Second Circular , Beilage unter dem Titel: Morphometrical and ecological differences between South Polar and Brown Skuas of Fildes Peninsula, King George Island, South Shetland Islands / H.-U. Peter, M. Kaiser, A. Gebauer (Abstract)
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  • 56
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/36
    In: CRREL Report, 82-36
    Description / Table of Contents: Camp construction and drilling activities in 1950 at the East Oumalik drill site in northern Alaska caused extensive degradation of ice-rich, perennially frozen silt and irreversible modification of the upland terrain. In a study of the long-term degradational effects at this site, the near-surface geology was defined by drilling and coring 76 holes (maximum depth of 34 m) in disturbed and undisturbed areas and by laboratory analyses of these cores. Terrain disturbances, including bulldozed roads and excavations, camp structures and off-road vehicle trails, were found to have severely disrupted the site's thermal regime. This led to a thickening of the active layer, melting of the ground ice, thaw subsidence and thaw consolidation of the sediments. Slumps, sediment gravity flows and collapse of materials on slopes bounding thaw depressions expanded the degradation laterally, with thermal and hydraulic erosion removing materials as the depressions widened and deepened with time. Degradational processes became less active after thawed sediments thickened sufficiently to slow the increase in the depth of thaw and permit slope stabilization. The site's terrain is now irregular and hummocky with numerous depressions. Seasonal thaw depths are deeper in disturbed areas than in undisturbed areas and reflect the new moisture conditions and morphology. The severity of disturbance is much greater at East Oumalik than at another old drill site, Fish Creek. The difference results primarily from differences in the physical properties of the sediments, including the quantity and distribution of ground ice.
    Type of Medium: Series available for loan
    Pages: 42 Seiten , Illustrationen
    Series Statement: CRREL Report 82-36
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Methodology Geologic setting Camp construction and occupation Types of disturbance Degradational processes and the effective area of impact Areal effects of disturbance Topography Groundwater, surface water and drainage Sediment properties and near-surface stratigraphy Surficial processes Depth of thaw Comparison to Fish Creek Discussion and conclusions Literature cited
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  • 57
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-83/13
    In: CRREL Report, 83-13
    Description / Table of Contents: A review on past experimental and theoretical work indicates a need for additional experimentation to characterize the response of snow to inelastic pressure waves. Pressure data from previously conducted explosion tests are analyzed to estimate the elastic limit of snow of 400 -kg/cu m density to be about 36 kPa. This pressure corresponds to a scaled distance of 1.6 m/cu.rt.kg for charges fired beneath the surface of the snow, and to a scaled distance of 1.2 m/cu.rt.kg for charges fired in the air. The effects of a snow cover on the method of clearing a minefield by using an explosive charge fired in the air above the snow surface are also discussed and recommendations are given for further work in this area. Explosive pressure data are used to estimate the maximum effective scaled radius for detonating buried mines at shallow depth to be 0.8 m/cu.rt.kg. Fuel-air explosive will increase this effective radius significantly because of the increase in the size of the source region.
    Type of Medium: Series available for loan
    Pages: 33 Seiten , Illustrationen
    Series Statement: CRREL Report 83-13
    Language: English
    Note: CONTENTS Abstract Preface List of symbols Introduction Objectives Background Problems in describing the response of snow to an applied stress Methods of determining the dynamic behavior of materials Review of previous studies on snow Experimental measurements on snow Summary of snow experiments Theoretical studies Confirmation of the theory Discussion Applications Recommendations Summary Literature cited Appendix A. Selected data from Wisotski and Snyder (1966) Appendix B. Pressure data from Livingston (1964)
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  • 58
    Call number: ZSP-201-83/14
    In: CRREL Report, 83-14
    Description / Table of Contents: An analysis of ice fracture that incorporates dislocation mechanics and linear elastic fracture mechanics is discussed. The derived relationships predict a brittle to ductile transition in polycrystalline ice under tension with a Hall-Petch type dependence of brittle fracture strength on grain size. A uniaxial tensile testing technique, including specimen preparation and loading system design was developed and employed to verify the model. The tensile strength of ice in purely brittle fracture was found to vary with the square root of the reciprocal of grain size, supporting the relationship that the theory suggests. The inherent strength of the ice lattice and the Hall-Petch slope are evaluated and findings discussed in relation to previous results. Monitoring of acoustic emissions was incorporated in the tests, providing insights into the process of microfracture during ice deformation.
    Type of Medium: Series available for loan
    Pages: 43 Seiten , Illustrationen
    Series Statement: CRREL Report 83-14
    Language: English
    Note: CONTENTS Abstract Preface Introduction Background Development of testing technique Test specimens Tensile testing Compression testing Experimental results Tensile tests Compression tests Discussion Conclusions Suggestions for further work Literature cited Appendix A: Additional information on seed grains Appendix B: Thin-sectioning procedure Appendix C: Displacement transducer calibration
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  • 59
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-83/16
    In: CRREL Report, 83-16
    Description / Table of Contents: The presence of snow on the ground can impose limitations on the mobility of wheeled and tracked vehicles. Snow depth and density are the two most easily measured snow properties that can be related to mobility over snow. Existing models of snowpack accumulation and ablation processes and models of internal snowpack structure were examined to determine if a model of the snowpack can be developed for use in predicting the snow parameters that affect mobility. Simple models, such as temperature index models, do not provide sufficient snowpack details, and the more detailed models require too many measured inputs. Components of the various models were selected from a basis of a snowpack model for predicting snow properties related to mobility over snow. Methods of obtaining the input data from some components are suggested, and areas where more development is needed are described.
    Type of Medium: Series available for loan
    Pages: 34 Seiten , Illustrationen
    Series Statement: CRREL Report 83-16
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Conversion of metric units Introduction Review of existing models Accumulation models Ablation models Using existing models for studying mobility Proposed snowpack model for mobility studies Model components Implementation of the model Developing input data Conclusions Literature cited
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  • 60
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-83/4
    In: CRREL Report, 83-4
    Description / Table of Contents: Measurements and analysis of seasonal ice growth and decay on Post Pond, New Hampshire, for the period 1973-1982 are presented. Observations included ice thickness measurements, examination of the various ice types contributing to the ice cover, and measurements of meteorological parameters for correlation with and modeling of the ice growth process. The overall nature of ice growth and decay (ice loss) on the Post Pond has been ascertained, the seasonal variability in the timing of freeze-up and ice-out and the duration of the ice cover have been determined, and the relationship of ice growth to freezing-degree-day (deg C) records evaluated on the basis of a Stefan conduction equation modified to deal with ice sheets covered with or free of snow. Ice growth occurs predominantly by the direct freezing of lake water, but snow ice may compose as much as 50% of the ice cover in winters with higher than average snowfall. Freeze-up leading to the establishment of a stable ice cover occurs during the 4-week period from the end of November to the end of December. Maximum seasonal ice thicknesses were from 45 to 67 cm and are generally attained during the first two weeks of March; ice-out, marking the final disappearance of ice from Post Pond, usually occurs by the third week of April. The overall rate of the ice loss is three to four times that of ice growth, and is dominated initially by melting from the top. As much as 50% of the ice may be lost in this way before the onset of any bottom melting. Final dissipation of the ice cover is usually expedited by candling resulting from preferential melting and disintegration of the ice at crystal boundaries.
    Type of Medium: Series available for loan
    Pages: iv, 30 Seiten , Illustrationen
    Series Statement: CRREL Report 83-4
    Language: English
    Note: CONTENTS Abstract Preface Introduction Location of study Study methods Ice thickness Ice-cover composition Surface air temperatures Freeze-up and ice-out characteristics Results and discussion Ice-growth record Freezing-degree-day records Ice-growth predictions Summary and conclusions Literature cited Appendix A: Ice-growth records Appendix B: Measured and computed ice-growth curves
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  • 61
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-83/1
    In: CRREL Report, 83-1
    Description / Table of Contents: Roof snow load case studies gathered throughout the United States over a three-year period are analyzed. The objective of the analysis is to determine a relationship between the snow load on the ground and the corresponding uniform snow load on flat and sloped roofs. The main parameters considered are the thermal characteristics of the roof, the roof slope and the exposure of the structure. Exposure has the strongest effect on the ratio of ground to roof snow loads. Comparisons are made with existing and proposed building codes and standards.
    Type of Medium: Series available for loan
    Pages: iv, 47 Seiten , Illustrationen
    Series Statement: CRREL Report 83-1
    Language: English
    Note: CONTENTS Abstract Preface Metric conversion table Introduction Data base Conversion factor Ground load effects Exposure effects Thermal effects Slope effects Expected value relationship Comparison with existing codes and standards Comparison with relationships proposed in new ANSI standard Summary and conclusions Literature cited Appendix A. Roof snow load case history reports Appendix B. Roofs in the snow load case study data base Appendix C. Ground and roof snow load data Appendix D. Conversion factors from the 1982 ANSI standard
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  • 62
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-84/24
    In: CRREL Report, 84-24
    Description / Table of Contents: This report describes the growth characteristics and crystalline textures of urea ice sheets which are now used extensively in the Cold Regions Research and Engineering Lab. (CRREL) test basin for modeling sea ice. The aims of the report are to describe the different kinds of crystalline texture encountered in urea ice sheets and to show that even small variations in texture can drastically influence the mechanical behavior of urea ice sheets. Standard petrographic techniques for studying microstructure in thin sections were used on 24 urea ice sheets. These investigations entailed observations of the crystalline texture of the ice (including details of the subgrain structure), grain size measurements, and studies of the nature and extent of urea entrapment and drainage patterns in the ice. Increased knowledge of the factors controlling the crystalline characteristics of urea ice sheets has progressed to the point where test basin researchers at CRREL are now able to fabricate ice sheets with prescribed structures leading to predictable mechanical properties. Originators supplied keywords include: Sea ice, and Mechanical properties.
    Type of Medium: Series available for loan
    Pages: iv, 55 Seiten , Illustrationen
    Series Statement: CRREL Report 84-24
    Language: English
    Note: Contents: Abstract Preface Introduction Objectives Analytical techniques Procedures for growing urea ice sheets Analysis of the crystalline structure of urea ice Characteristics of urea ice Results and discussion Ice sheet no. 1 Ice sheet no. 2 Ice sheet no. 3 Ice sheet no. 4 Ice sheet no. 5 Ice sheet no. 6 Ice sheet no. 7 Ice sheet no. 8 Ice sheet no. 9 Ice sheet no. 10 Ice sheet no. 11 Ice sheet no. 12 Ice sheet no. 13 Ice sheet no. 14 Ice sheet no. 15 Ice sheet no. 16 Ice sheet no. 17 Ice sheet no. 18 Ice sheet no. 19 Ice sheet no. 20 Ice sheet no. 21 Ice sheet no. 22 Ice sheet no. 23 Ice sheet no. 24 Urea concentrations in test tank solution and ice Discussion and conclusions E/σf ratio Thickness of incubation layer Crystal properties Literature cited Appendix A: Thin sections of urea ice sheets
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  • 63
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-84/19
    In: CRREL Report, 84-19
    Description / Table of Contents: In this study a method for making long-range forecasts of freeze-up dates in rivers is developed. The method requires the initial water temperature at an upstream station, the long-range air temperature forecast, the predicted mean flow velocity in the river reach, and water temperature response parameters. The water temperature response parameters can be either estimated from the surface heat exchange coefficient and the average flow depth or determined empirically from recorded air and water temperature data. The method is applied to the St. Lawrence River between Kingston, Ontario, and Massena, New York, and is shown to be capable of accurately forecasting freeze-up. Originator-supplied keywords include: Ice formation, and River ice.
    Type of Medium: Series available for loan
    Pages: iii, 22 Seiten , Illustrationen
    Series Statement: CRREL Report 84-19
    Language: English
    Note: CONTENTS Abstract Preface Introduction Problem formulation Analytical treatment Application to the upper St. Lawrence River Summary Literature cited Appendix A: Basic program for St. Lawrence River freeze-up forecast
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  • 64
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-84/17
    In: CRREL Report, 84-17
    Description / Table of Contents: VHF-band radiowave short pulses were transmitted within the permafrost tunnel at Fox, Alaska, over distances between 2.2 and 10.5 m. The propagation medium was a frozen silt containing both disseminated and massive ice with temperatures varying from -7°C near the transmitter to probably -2 C near the center of the tunnel overburden. The short pulses underwent practically no dispersion in the coldest zones but did disperse and refract through the warmer overburden, as suggested by calculations of the effective dielectric constant. Most significantly the measured frequency content decreased as the effective dielectric constant increased. The results indicate that deep, cross-borehole pulse transmissions over distances greater than 10 m might be possible, especially when the ground is no warmer than -4°C. The information thus pined could be used for identifying major subsurface variations, including ground ice features.
    Type of Medium: Series available for loan
    Pages: ii, 14 Seiten , Illustrationen
    Series Statement: CRREL Report 84-17
    Language: English
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  • 65
    Call number: ZSP-201-83/7
    In: CRREL Report, 83-7
    Description / Table of Contents: Peak power generation with hydropower creates tailwater flow conditions characterized by high and low flows with abrupt transitions between these states. Flows occurring in tailwaters typically form sharp-fronted, large-amplitude waves of relatively short period. An understanding of the mechanics of downstream propagation of these waves is important both for direct application in studies of the tailwater and because of the similarity of these waves to those following a dam break. An analysis of the dynamic equations of open channel flow is used to quantify the relative importance of flow wave convection, diffusion and dispersion in rivers. The relative importance of each process is re­lated to the relative magnitude of terms in the dynamic equations, providing a physical basis for model formulation. A one-dimensional diffusion wave flow routing model, modified for tailwaters, simulates the important physical pro­cesses affecting the flow and is straightforward to apply. The model is based upon a numerical solution of the kine­matic wave equation. The “modified equation,” Hirt, and von Neumann analyses are used to gain insight into the stability and dissipative and dispersive behavior of the numerical solution, and results of these analyses are compared. A set of linear routings is used to demonstrate the dissipative and dispersive behavior predicted by the analyses and to verify the accuracy of an expression that quantifies the numerical diffusion of the model. The analyses provide a basis for selection of numerical parameters for model applications. The capability and accuracy of the model are enhanced when physical wave diffusion is balanced by numerical diffusion in the model. Maintaining the diffusion balance re­quires that the time derivative weighting parameter 0 be variable and in some instances negative. Though some amount of phase error is introduced, negative 0 values have no adverse effect upon model stability. Field studies were con­ducted to demonstrate the benefits of careful model development and analysis, and to verify the diffusion wave model for rapidly varying tailwater flow. The bed slope and roughness characteristics of the field study reaches (below Apalachia and Norris Dams) differ greatly, spanning those of a large number of rivers of practical interest. The accurate simulation of flow in both of these tailwaters attests to the soundness of both the physical basis of the model and the numerical solution technique. The field studies confirm, for the extreme case of rapidly varying flow in a mildly sloped river, that inertia has a negligible effect upon unsteady flow waves at low Froude numbers. Additionally, these studies verify that diffusion of short-period waves in rivers is generally significant.
    Type of Medium: Series available for loan
    Pages: vi, 41 Seiten , Illustrationen
    Series Statement: CRREL Report 83-7
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Physical diffusion and dispersion in open channel flow Modeling approach Description of the diffusion wave flow routing model Analysis of the numerical model Modified equation and Hirt analyses of diffusion wave model von Neumann analysis of the diffusion wave model Linear case studies Accuracy considerations of the numerical solution Field studies Apalachia Dam tailwater Norris Dam tailwater Conclusions Literature cited
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  • 66
    Call number: AWI G8-19-92587
    Description / Table of Contents: Arctic tundra ecosystems are experiencing warming twice the global average and Arctic vegetation is responding in complex and heterogeneous ways. Shifting productivity, growth, species composition, and phenology at local and regional scales have implications for ecosystem functioning as well as the global carbon and energy balance. Optical remote sensing is an effective tool for monitoring ecosystem functioning in this remote biome. However, limited field-based spectral characterization of the spatial and temporal heterogeneity limits the accuracy of quantitative optical remote sensing at landscape scales. To address this research gap and support current and future satellite missions, three central research questions were posed: • Does canopy-level spectral variability differ between dominant low Arctic vegetation communities and does this variability change between major phenological phases? • How does canopy-level vegetation colour images recorded with high and low spectral resolution devices relate to phenological changes in leaf-level photosynthetic pigment concentrations? • How does spatial aggregation of high spectral resolution data from the ground to satellite scale influence low Arctic tundra vegetation signatures and thereby what is the potential of upcoming hyperspectral spaceborne systems for low Arctic vegetation characterization? To answer these questions a unique and detailed database was assembled. Field-based canopy-level spectral reflectance measurements, nadir digital photographs, and photosynthetic pigment concentrations of dominant low Arctic vegetation communities were acquired at three major phenological phases representing early, peak and late season. Data were collected in 2015 and 2016 in the Toolik Lake Research Natural Area located in north central Alaska on the North Slope of the Brooks Range. In addition to field data an aerial AISA hyperspectral image was acquired in the late season of 2016. Simulations of broadband Sentinel-2 and hyperspectral Environmental and Mapping Analysis Program (EnMAP) satellite reflectance spectra from ground-based reflectance spectra as well as simulations of EnMAP imagery from aerial hyperspectral imagery were also obtained. Results showed that canopy-level spectral variability within and between vegetation communities differed by phenological phase. The late season was identified as the most discriminative for identifying many dominant vegetation communities using both ground-based and simulated hyperspectral reflectance spectra. This was due to an overall reduction in spectral variability and comparable or greater differences in spectral reflectance between vegetation communities in the visible near infrared spectrum. Red, green, and blue (RGB) indices extracted from nadir digital photographs and pigment-driven vegetation indices extracted from ground-based spectral measurements showed strong significant relationships. RGB indices also showed moderate relationships with chlorophyll and carotenoid pigment concentrations. The observed relationships with the broadband RGB channels of the digital camera indicate that vegetation colour strongly influences the response of pigment-driven spectral indices and digital cameras can track the seasonal development and degradation of photosynthetic pigments. Spatial aggregation of hyperspectral data from the ground to airborne, to simulated satel-lite scale was influenced by non-photosynthetic components as demonstrated by the distinct shift of the red edge to shorter wavelengths. Correspondence between spectral reflectance at the three scales was highest in the red spectrum and lowest in the near infra-red. By artificially mixing litter spectra at different proportions to ground-based spectra, correspondence with aerial and satellite spectra increased. Greater proportions of litter were required to achieve correspondence at the satellite scale. Overall this thesis found that integrating multiple temporal, spectral, and spatial data is necessary to monitor the complexity and heterogeneity of Arctic tundra ecosystems. The identification of spectrally similar vegetation communities can be optimized using non-peak season hyperspectral data leading to more detailed identification of vegetation communities. The results also highlight the power of vegetation colour to link ground-based and satellite data. Finally, a detailed characterization non-photosynthetic ecosystem components is crucial for accurate interpretation of vegetation signals at landscape scales.
    Type of Medium: Dissertations
    Pages: vi, 126 Seiten , Illustrationen
    Language: English
    Note: Dissertation, Universität Potsdam, 2019 , Table of Contents Abstract Zusammenfassung Abbreviations 1 Introduction 1.1 Scientific Background and Motivation 1.1.1 Arctic Tundra Vegetation 1.1.2 Remote Sensing of Arctic Tundra Vegetation 1.1.3 Hyperspectral Remote Sensing of Arctic Vegetation 1.2 Aims and Objectives 1.3 Study Area and Data 1.3.1 Toolik Lake Research Natural Area 1.3.2 In-situ Canopy-level Spectral Data 1.3.3 True-colour Digital Photographs 1.3.4 Leaf-level Photosynthetic Pigment Data 1.3.5 Airborne AISA Imagery 1.3.6 Simulated EnMAP and Sentinel-2 Reflectance Spectra 1.3.7 Simulated EnMAP Imagery 1.4 Thesis Structure and Author Contributions 1.4.1 Chapter 2 -A Phenological Approach to Spectral Differentiation of Low-Arctic Tundra Vegetation Communities, North Slope Alaska 1.4.2 Chapter 3 -Monitoring Pigment-driven Vegetation Changes in a Low Arctic Tundra Ecosystem Using Digital Cameras 1.4.3 Implications of Litter and Non-vascular Components on Multiscale Hyperspectral Data in a low-Arctic Ecosystem 2 A Phenological Approach to Spectral Differentiation of Low Arctic Tundra Vegetation Communities, North Slope Alaska 2.1 Abstract 2.2 Introduction 2.3 Materials and Methods 2.3.1 Study Site and Low Arctic Vegetation Types 2.3.2 Ground-Based Data and Sampling Protocol 2.3.3 EnMAP and Sentinel-2 Surface Reflectance Simulation 2.3.4 Stable Wavelength Identification Using the InStability Index 2.4 Results 2.4.1 Spectral Characteristics by Phenological Phase 2.4.2 InStability Index and Wavelength Selection of Ground-based Spectra 2.4.3 InStability Index and Wavelength Selection of Simulated Satellite Reflectance Spectra 2.5 Discussion 2.5.1 Phenological Phase and Wavelength Stability of Ground-based Spectra 2.5.2 Phenological Phase and Wavelength Stability of Satellite Resampled Spectra 2.5.3 Influence of Spatial Scale 2.6 Conclusions 2.7 Acknowledgements 2.8 Supplementary Material 2.8.1 Data Publication 3 Monitoring Pigment-driven Vegetation Changes in a Low Arctic Tundra Ecosystem Using Digital Cameras 3.1 Abstract 3.2 Introduction 3.3 Methods 3.3.1 Study Site 3.3.2 Digital Photographs 3.3.3 Field-based Spectral Data 3.3.4 Vegetation Pigment Concentration 3.3.5 Data Analyses 3.4 Results 3.4.1 RGB Indices as a Surrogate for Pigment-driven Spectral Indices 3.4.2 RGB Indices as a Surrogate for Leaf-level Pigment concentration 3.5 Discussion 3.6 Conclusions 3.7 Supplementary Material 3.7.1 Data Publication 4 Implications of Litter and Non-vascular Components on Multiscale Hyperspectral Data in a Low Arctic Ecosystem 4.1 Abstract 4.2 Introduction 4.3 Materials and Methods 4.3.1 Study Site 4.4 Remote Sensing Data 4.4.1 Ground-based Image Spectroscopy Data 4.4.2 Airborne AISA Hyperspectral Data 4.4.3 EnMAP Simulation 4.4.4 Spectral Comparison by Wavelength 4.4.5 Linear Mixture Analysis 4.5 Results 4.5.1 Spatial Scaling of Spectral Signals 4.6 Discussion 4.7 Conclusions 4.8 Acknowledgements 5 Synthesis and Discussion 5.1 Phenological Phase: does phenology influence the spectral variability of dominant low Arctic vegetation communities? 5.2 Vegetation Colour: How does canopy-level vegetation colour relate to phenological changes in leaf-level photosynthetic pigment concentration? 5.3 Intrinsic Ecosystem Components: How does spatial aggregation of high spectral resolution data influence low Arctic tundra vegetation signals? 5.4 Key Innovations 5.5 Limitations and Technical Considerations 5.6 Outlook: Opportunities for Future Research 6 References Acknowledgements
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  • 67
    Call number: ZSP-168-716
    In: Berichte zur Polar- und Meeresforschung, 716
    Type of Medium: Series available for loan
    Pages: 211 Seiten , Illustrationen
    ISSN: 1866-3192
    Series Statement: Berichte zur Polar- und Meeresforschung 716
    Language: English
    Note: Contents Characterization of soil organic matter of Arctic and Antarctic by 13- C NMR and electron spin resonance spectroscopy / Evgeny Abakumov Development of phosphorus forms in soil chronosequence of the Nordenskioldbreen glacier (Svalbard) / Adel Allaberdina, Václav Tejnecký Vertical snow structures from in-situ and remote sensing measurements / Stefanie Arndt, Nicolas Stoll, Stephan Paul, Christian Haas Phenology of Calanus glacialis – comparison between Arctic and Atlantic domains and its implications for reproductive success of little auks / Kaja Balazy, Emilia Trudnowska, Katarzyna Blachowiak-Samolyk Response of southern tundra ecosystem components on aerial pollution from gas pre-treatment centers in West Siberia / Pavel A. Barsukov Soil-ecological excursions to permafrost-affected areas in West Siberia for European scientists and students / Pavel A. Barsukov, S. Platonova, S. Gizhitskaya, E. Smolentseva, N. Lashchinskiy, A. Babenko, I. Lyubechanskiy, O. Saprykin, O.Rusalimova Christian Siewert Freezing and hungry? Hydrocarbon degrading microbial communities in Barents Sea sediments around Svalbard / Bartholomäus Sven, Nontje Straaten, Daniela Zoch, Martin Krüger Biological soil crust algae in the polar regions – biodiversity, genetic diversity and ecosystem resilience under global change scenarios / Burkhard Becker, Burkhard Büdel and Ulf Karsten UDASH - Unified Database for Arctic and Subarctic Hydrography / Axel Behrendt, Hiroshi Sumata, Benjamin Rabe, Torsten Kanzow and Ursula Schauer Compound-specific radiocarbon constraints on Antarctic sediment chronologies / Sonja Berg, Sandra Jivcov, Janet Rethemeyer Environmental conditions in terrestrial East Antarctica during the last glacial - new evidence from mumiyo deposits / Sonja Berg, Martin Melles, Wolf-Dieter Hermichen, Janet Rethemeyer, Gerhard Kuhn Collection-based diatom research: collection imaging to biogeography and microevolution in the Southern Ocean / Bánk Beszteri, Stefan Pinkernell, Michael Kloster, Ute Postel, Gerhard Kauer, Uwe John, Klaus Valentin, Gernot Glöckner In vivo observations of OWA induced pH changes in the brain of polar cod Boreogadus saida / Christian Bock, Felizitas C. Wermter, Bastian Maus, Hans-O. Pörtner, Wolfgang Dreher A journey into the Triassic polar forests of Antarctica / Benjamin Bomfleur Long-term time-series of Arctic BrO derived from UV-VIS satellite remote sensing / lias Bougoudis, Anne-Marlene Blechschmidt, Andreas Richter, Sora Seo, John P. Burrows The effect of climate change on the carbon balance in microalgae / Deborah Bozzato, Torsten Jakob, Christian Wilhelm Species composition and abundance of the shallow water fish community of Kongsfjorden, Svalbard / Markus Brand, Philipp Fischer Decadal changes in a breeding population of southern giant petrels on King George Island, Antarctic, in response to human activities / Christina Braun, Jan Esefeld, Hans-Ulrich Peter Geodetic GNSS measurements to investigate the recent crustal deformation at the Antarctic Peninsula and in the Amundsen Sea Embayment, West Antarctica / Peter Busch, Mirko Scheinert, Christoph Knöfel, Lutz Eberlein, Martin Horwath, Ludwig Schröder, Andreas Groh Parameterization of snow BRDF measurements in Antarctica / T. Carlsen, G. Birnbaum, A. Ehrlich, M. Schäfer, and M. Wendisch Airborne and in situ ground-based measurements of surface albedo, bidirectional reflectivity, and snow properties on the Antarctic plateau / T. Carlsen, M. Belke Brea, G. Birnbaum, A. Ehrlich, J. Freitag, G. Heygster, L. Istomina, S. Kipfstuhl, A. Orsi, M. Schäfer, and M. Wendisch Retreats of ice sheet and ice shelf driven by warm water incursions in the Ross Sea since the Last Glacial Maximum / Zhihua Chen, Mengshan Ju, Shulan Ge, Zheng Tang, Yuanhui Huang, Renjie Zhao, Ralf Tiedemann, Lester Lembke-Jene Influence of breeze circulation on local wind climatology in Svalbard fjords / Małgorzata Cisek, Przemysław Makuch, Tomasz Petelski, Jacek Piskozub Life strategies on photobiology and metabolite profile of genetic indentical photobionts of two different lichen species / Nadine Determeyer-Wiedmann, Sieglinde Ott Land-Ocean Interactions in the late glacial Bering Sea / B. Diekmann, R. Wang, H. Kühn, R. Gersonde, R. Tiedemann, G. Kuhn Does environmental change affect polar microbial communities? / Daniel R. Dietrich Rapid glacial isostatic uplift in Patagonia: Interplay of enhanced ice mass loss and slab window tectonics / R. Dietrich, A. Richter, E. Ivins, H. Lange, L. Mendoza, L. Schröder, J.L. Hormaechea, G. Casassa, E. Marderwald, M. Fritsche, R. Perdomo, M. Horwath Phylogenomics of the longitarsal Colossendeidae: the evolution of a diverse Antarctic sea spider radiation / Lars Dietz, Jana S. Dömel, Christoph Mayer, Florian Leese Revealing the evolutionary history of Southern Ocean sea spiders using genome-wide SNP data / Jana S. Dömel, Till-Hendrik Macher, Lars Dietz, Christoph Mayer, Roland R. Melzer and Florian Leese Geothermal heat flux derived from airborne magnetic grids and measured temperature gradients in the Amundsen Sea sector of West Antarctica / Ricarda Dziadek, Karsten Gohl, Fausto Ferraccioli, Norbert Kaul, Cornelia Spiegel Sea spray aerosol fluxes in the area of the Spitsbergen Shelf and the Greenland Sea / K. Dziembor, T. Petelski, P. Markuszewski, T. Zieliński, P. Makuch, I. Wróbel More than two decades of geodetic GNSS measurements in Antarctica, Greenland and Patagonia – a technology review / Lutz Eberlein, Mirko Scheinert, Peter Busch, Christoph Knöfel, Andreas Richter Analysing the flow velocity of major outlet glaciers in North Greenland using Landsat data / Benjamin Ebermann, Ralf Rosenau, Mirko Scheinert, Martin Horwath Partitioning growing season net ecosystem exchange of CO2 into photosynthesis, autotrophic and heterotrophic respiration in the Siberian tundra / Tim Eckhardt, Christian Knoblauch, Lars Kutzbach, Gillian Simpson, Eva-Maria Pfeiffer Meteorological collaboration in the Arctic / Johanna Ekman Meteorological aspects of S.A. Andrée’s attempt to reach the North Pole by balloon in 1897 / Dieter Etling Geodetic mass balance on South Georgia glaciers / David Farias-Barahona, Christian Sommer, Thorsten Seehaus, Philipp Malz, Gino Casassa, Matthias H. Braun Frozen-Ground Cartoons: An international collaboration between artists and permafrost scientists / Michael Fritz, Frédéric Bouchard, Bethany Deshpande, Julie Malenfant-Lepage, Alexandre Nieuwendam, Michel Paquette, Ashley Rudy, Matthias Siewert, Audrey Veillette, Stefanie Weege, Jon Harbor, Otto Habeck, Ylva Sjöberg The Akademii Nauk ice core and solar activity / Diedrich Fritzsche, Luisa von Albedyll, Silke Merchel, Thomas Opel, Georg Rugel, Andreas Scharf Walther Bruns, Gründer der „Aeroarctic“ – ein vergessener Pionier der Deutschen Polarforschung / Diedrich Fritzsche Warming and reduction of precipitations affect the microbiome of recently deglaciated soils in the Swiss Alps / Aline Frossard, Johanna Donhauser, Pascal Niklaus, Thomas Rime, Beat Frey The ice-free topography of Svalbard / Johannes J. Fürst, Francisco Navarro, Fabien Gillet-Chaulet, Geir Moholdt, Xavier Fettweis, Charlotte Lang, Thorsten Seehaus, Matthias H. Braun, Douglas I. Benn, Toby J. Benham, Julian A. Dowdeswell, Mariusz Grabiec, Jack Kohler, Katrin Lindbäck, Rickard Pettersson, Heidi Sevestre Scientific Drilling in Antarctica? Coming to a new drilling proposal / Christoph Gaedicke, Gerhard Kuhn, Olaf Eisen, Andreas Läufer, Emma Smith, Nikola Koglin, Boris Biskaborn, Dieter Franke, Ralf Tiedemann German permanent research facilities in Antarctica - a 40 years record / Hartwig Gernandt Pre-glacial and glacial shelf evolution from seismic and seabed drill records of the Amundsen Sea, West Antarctica / Karsten Gohl, Gabriele Uenzelmann-Neben, Robert Larter, Johann Klages, Claus-Dieter Hillenbrand, Torsten Bickert, Steve Bohaty, Ulrich Salzmann, Thomas Frederichs, Catalina Gebhardt, Katharina Hochmuth and Expedition PS104 Science Party The Turnove
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  • 68
    Call number: ZSP-980-70
    In: 2nd Working Meeting "Radioisotope Application and Radiation Processing in Industry", Part 2, 50 to 97
    In: ZfI-Mitteilungen, Nr. 70
    Type of Medium: Series available for loan
    Pages: 355 Seiten , Illustrationen
    ISSN: 0323-8776
    Series Statement: ZfI-Mitteilungen 70
    Language: English
    Note: Contents of Part 2 Hecht, K. Gerber, R. Otto: Studies on the drying of paints by means of 14C-labelled compounds K. Wagner, F. Brutschin, I. Ritter, T. Gritsch, H. Zimmermann, H. Borchert: Investigations by the aid of radioisotope methods on the technology of the production of carbon and silicon carbide materials K. Gloe, P. Mühl: Determination of metal extraction process parameters using tracer technique W. Migdał, W. Łada, K. Malec-Czechowska: Studies on liquid-liquid extraction of noble metals using radiotracers L. Petryka, K. Przewłocki: Radiotracer investigations of benefication copper ore in the industrial flotation process Z. Bazaniak, J. Palige: Determination of Cu recovery degree from slags in shaft process by means of radiotracers R. Burek, J .K. Zurawicz: On the optimization of concentration measurements in heterogeneous materials based on β-backscatter measurements B. Heinrich: Analysis of carbon content in crude brown coal by inelastic scattering of neutrons and the method of time correlated associated particles P. Urbańaki, D. Wagner, M. Jankowska, E. Kowalska: Determination of calcium and iron and measurements of ash content in the brown coal H.-W. Thümmel: Some considerations relating to the prediction of the efficiency of radiometric methods for the continuous ash content determination of coal L. Wawrzonek: Monitor of ash content of coal with X-ray source I. Pavlicsek, V. Stenger, A. Veres: Apparatus for gamma activation analysis I. Végvári, I. Juhász: Determination of PbO content of lead-glass samples on the ground of gamma-absorption E. Schöntube, H.-J. Große: Aerosol ionization gas analysis as a monitoring for waste halothane in the atmosphere of operating theatre S. Mothes, P. Popp, G. Oppermann, W.-D. Herberg: Measurement of fluorocarbons with the ECD P. Popp, E. Schöntube, G. Oppermann: The usability of radiation ionization detectors for the determination of N2O concentrations in the air of operating theatres P. Popp, G. Arnold, G. Oppermann: A hydrocarbon-sensitized argon ionization detector for the detection of inorganic compounds R. Szepke, W. Lisieski, J. Harasimczuk: Automatic dust monitor AMIZ G. Vormum: Sealed sources - problems of design, measurement and quality control L. Gąsiorowski: New trends in developments of ratioisotope gauges in Poland G. Brunner: Direct chemical information from special radio tracers as well as from outer X-ray excitation J. Hirling: Experience and future trend in industrial application of nuclear methods in Hungary I. N. Ivanov, O. K. Nikolaenko, Yu. V. Phecktistov, V. L. Chulkin: Use of short-lived nuclides in activation analysis Kl.-P. Rudolph, J. Flachowsky, A. Lange: Trace element determination in semiconducter selenium by neutron activation analysis (NAA) W. Lisieski, J. Mirowicz: Some industrial applications of instruments with neutron sources R. Dybczyński, H. Maleszewaka, S. Sterliński, Z. Szopa, M. Wasek: Some problems in neutron activation determination of gold and silver in ores and concentrates of copper industry L. Jankowski: Cost-benefit aspects of radioisotope application in industry B. Manouchev, T. Boschkova, L. Tsankov, V. Gurev, I. Kojucharov, G. Grozev: On the possibilities of the direct gamma-spectremetry in natural waters P. Morgenstern, D. Müller, W. Riedel: A parallel grid proportional scintillation counter for the X-ray region from 3 to 20 keV with regard to high count rates N. A. Anders, V. S. Isaev, V. I. Filatov, B. E. Kolesnikov, D. Müller, P. Morgenstern, W. Riedel, V. P. Varvaritsa: X-ray fluroescence analyzer of light elements with proportional scintillation counter D. Müller, P. Morgenstern, W. Riedel, W. Warwariza, B. E. Kolesnikow, N. A. Anders, W. J. Filatov: General considerations concerning the use of the X-ray analyzer "RALE" in industry
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  • 69
    Call number: ZSP-980-71
    In: 2nd Working Meeting "Radioisotope Application and Radiation Processing in Industry", Part 3, 98 to 155
    In: ZfI-Mitteilungen, Nr. 71
    Type of Medium: Series available for loan
    Pages: 368 Seiten , Illustrationen
    ISSN: 0323-8776
    Series Statement: ZfI-Mitteilungen 71
    Language: English
    Note: Contents of Part 3 P. Popp, J. Leonhardt: Characterization of coulometric and hypercoulometric ECD mode of operation D. Hinneburg, H.-J. Grosse, J. Leonhardt, P. Popp: Calculation of current-voltage characteristics of electron-capture detectors A.G. Rozno, V.V. Gromov: Study of volume electric charge in radioactive dielectrics by the method of "acoustic sounding" Iv. N. Pandev, M.G. Christova, St.D. Stefanov, N.V. Gentchev, St.T. Bakardjiev, D.T. Genov, Ch.D. Christov: Portable gamma-irradiator - modified model P. Hargittai, V. Stenger: Planning of dose-rate distribution of radiation fields by computer M. Remer: DOSKMF2 - A contribution to the computer-aided design of dose rate distributions A. Heger, H. Dorschner, W. Schumann, D. Pleul: Characterization of the radiation field and control of the optimal electron beam accelerator operation for industrial processes V. Prenerov, K. Shivarov, P. Ivanov: Programme for radiation protection by using portable defectoscopes in industrial building T. Geßner, K. Irmer: Nuclear radiation detectors using high resistivity neutron transmutation doped silicon H.-G. Könnecke, D. Luther: The influence of airing systems on the residence time in biological clarification plants J. Dermietzel, C. Wienhold, H. Grundmann, A. Staschok, J. Koch, E. Bordes: Tracer studies on carbon monoxide and carbon dioxide formation in liquid phase oxidation of p-xylene W. Smułek: Use of technical mixtures of carboxylic acids to the extraction of silver H. Förster: Determination of oxide film thickness on aluminium using 14-MeV neutron activation and BET method H. Jaskólska, L. Waliś, C. Janusz: Investigations of the monocrystallization process of neodymium doped YAG using radiotracers H. Wagler: Substoichiometric determination of Pd-II-traces with dithizone and problems of determination P. Tábor, L. Molnár, D. Nagymihá!yi: Radioisotope gauge for automatic control of cottonwool package H.-W. Thummel, G. Körner, D. Fritzsche: Compensation for thickness variations in determining the bulk material composition on conveyor belts using combined scatter-transmission and thickness measuring methods D. Fritzsche, W. Dolak: Radiometric determination of ash content of raw lignites M. Braune: A simplified mathematical model for scattered transmission of X-rays in raw brown coal P. S. Kamenov, E. I. Vapirev, S. I. Ormandjiev: A new type of nuclear weighing device for transporter belts W. Smulek, M. Borkowski: Separation of reduced molybdenum from fission products. The Mo - HN03 - HDEHP system J. Komosiński, M. Radwan: Selected problems of radioisotope technique for wear investigation of precise elements Dr. A. Várkonyi: The thin layer activation for industry G. Hartmann, P. Kulicke: Wear testing in power stations J. Kraś, Z. Banasik: The radioisotopes in wear investigation of combustion engines H.-D. Grohmann: Short-time measurements of wear on surface activated rails G.M. Ter-Akopian, E.A. Sokol, Fam Ngok Chyong, M.P. Ivanov, L.P. Chelnokov, V.I. Smirnov, V.A. Gorshkov: Neutron multiplicity detector for the study of rare nuclear decay events L. Gąsiorowski, P. Mroziński, K. Sobkowicz, F. Zrudelny: Implementation of Intel 8080 - based microcomputer system in the radioisotope measurements control instrumentation W. Birkholz, M. Steinert: Evaluation of autoradiograms using a microcomputer F. Myšák, M. Krejči, J. Hakl, E. Smrkovský: Study of boron diffusion in high temperature Ni-base alloys by means of solid state track detectors W. Birkholz, H.-Ch. Treutler, K. Freyer, M. Geisler, J. Dubnack: Autoradiography of gallium in silicon H.C. Treutler, K. Freyer: On quantitative autoradiography of semiconductor basic material A.S. Shtan': Radiation evaluation techniques and facilities used for quality assurance of fuel elements and fuel assemblies for nuclear power plants D. Babić, A. Šafranj, V. Marković: Radiation degradation of poly-propylene-molecular weight and melt viscosity change A. Ciszek: Modern irradiation processes equipment-accelerators and their applications G. Kummer: Identification of signals by means of the decision theory N.S. Batchvarov, I.D. Vankov, L.P. Dimitrov, Ch.D. Shukov, P.A. Pavlov: Betareflektometer SR-77
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  • 70
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-85/9
    In: CRREL Report, 85-9
    Description / Table of Contents: Large temperature gradients applied to a snow cover drive water vapor upwards and result in rapid recrystallization of snow crystals. The same temperature gradients create gradients of air density that can cause flows of air through the snow cover. The formalism necessary to describe these flows I developed heroin an effort to include the convection of vapor in the understanding of snow metamorphism. The theory of convection through porous media is extended here to include the transport of water vapor, which is important because of its latent heat. Results are presented in terms of a Lewis number, defined as the ratio of thermal to mass diffusivities. For Lewis numbers greater than 1.0 phase change intensifies convection, and for Lewis numbers less than 1.0 phase change retards convection. Two boundary conditions of special interest in the study of snow, a constant heat flux bottom and a permeable top are investigated. Their influence on the transfer of heat is quantified, and it is found that heat transfer can be described as a linear function of the driving force for convection. Convection in sloped layers is quantified, and explained in a physically consistent manner. The effect of a permeable top on convection at low Rayleigh numbers is derived. Experiments are performed to measure the effects of convection on heat transfer through glass beads and snow. The model results using constant flux boundary conditions are confirmed by the experiments. Experiments show that convection can occur in snow, and that convection behaves in a manner consistent with our theoretical understanding of the phenomenon. Some uncertainty exists about the permeability and thermal conductivity of snow and hence it is uncertain if thermal convection would occur for a given temperature gradient, density and thickness. Also, for a given convective intensity, there is much uncertainty about how much the rate of snow metamorphism is increased.
    Type of Medium: Series available for loan
    Pages: vi, 70 Seiten , Illustrationen
    Series Statement: CRREL Report 85-9
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Snow metamorphism Mass transfer by diffusion in snow Heat transfer Background-porous media Structure of thermal convection Rayleigh number Onset problem Heat transfer attributable to thermal convection Layering and slope effects Studies of convection through snow Modeling Equation of motion Energy equation Finite difference methods Numerical solution Verification of the model Modeling results Effects of constant flux and permeable boundaries on convection in horizontal layers Effects of phase change on convection Convection in sloped layers Experiments Introduction Experimental apparatus Experimental results and discussion Glass beads Snow Applications and conclusions Onset of Benard convection in seasonal snow covers Applications to snow metamorphism Summary Recommendations Literature cited Appendix A: Derivation of fmite difference formulae Appendix B: Computer programs Appendix C: Sample calculations
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  • 71
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-85/10
    In: CRREL Report, 85-10
    Description / Table of Contents: Various methods of generating synthetic seismograms are reviewed and examples of recent applicatiors of the methods are cited. Body waves, surface waves, and normal modes are considered. The analytical methods reviewed include geometric ray theory, generalized ray theory (Cagniard-de Hoop method), asymptotic ray theory, reflectivity method, fullwave theory, and hybrid methods combining ray theory and mode theory. Two numerical methods, those of finite differences and finite elements, and a hybrid method combining finite differences with asymptotic ray theory are described Limitations on the application or validity of the various methods are stated.
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    Pages: v, 48 Seiten , Illustrationen
    Series Statement: CRREL Report 85-10
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Section 1. Introduction Section 2. Wave propagation in the earth Section 3. Body waves: ray theory and wave theory Geometric ray theory Wave theory Section 4. Surface waves Section 5. Normal modes Section 6. Finite-difference method Section 7. Finite-element method Section 8. Hybrid methods Section 9. Conclusion Literature cited
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  • 72
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-88/2
    In: CRREL Report, 88-2
    Description / Table of Contents: While many materials undergo phase change at a fixed temperature, soil systems exhibit a definite zone of phase change. The variation of unfrozen water with temperature causes a soil system to freeze of thaw over a finite temperature range. Exact and approximate solutions are given for conduction phase change of plane layers of soil with unfrozen water contents that vary linearly and quadratically with temperature. The temperature and phase change depths were found to vary significantly from those predicted for the constant-temperature or Neumann problem. The thermal conductivity and specific heat of the soil within the mushy zone varied as a function of unfrozen water content. It was found that the effect of specific heat is negligible, while the effect of variable thermal conductivity can be accounted for by a proper choice of thermal properties used in the constant-thermal-property solution.
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    Pages: v, 30 Seiten , Illustrationen
    Series Statement: CRREL Report 88-2
    Language: English
    Note: CONTENTS Abstract Nomenclature Preface Introduction Basic equations Two-zone problems Linear unfrozen water function Quadratic unfrozen water function Three-zone problems Linear unfrozen water function Quadratic unfrozen water function Conclusions Literature cited Appendix A: Derivation of the mushy zone equation Appendix B: Solution of the two-zone problem with a linear t and variable thermal properties
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  • 73
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-88/11
    In: CRREL Report, 88-11
    Description / Table of Contents: This study assesses the effects of atmospheric icing on broadcast transmission reflections on two mountains- Mount Mansfield in northern Vermont and Mount Washington in New Hampshire. Experience and theory suggest that antenna ice accretions produce large signal reflections. Correlations between reflection coefficients and ice accretions on Rosemount ice detectors adjacent to antennas were low and occasionally negative. The unexpected correlations may be due to factors not measured, such as antenna tuning, ice type and ice location on the antenna system. Other confounding factors may include ice detector performance and methods used to compute antenna ice accretions from the ice detectors.
    Type of Medium: Series available for loan
    Pages: iii, 19 Seiten , Illustrationen
    Series Statement: CRREL Report 88-11
    Language: English
    Note: CONTENTS Abstract Preface Introduction Data sources Study location and icing conditions Icing data Antenna reflection data Data preparation Analyses Conclusions Literature cited
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  • 74
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-88/5
    In: CRREL Report, 88-5
    Description / Table of Contents: This report describes the structural analysis of multi-year sea ice samples that were tested in the second phase of a program designed to obtain a comprehensive understanding of the mechanical properties of multi-year sea ice from the Alaskan Beaufort Sea. Each test specimen is classified into one of three major ice texture categories: granular, columnar, or a mixture of columnar and granular ice. The crystallographic orientation, percent columnar ice, and grain size are then evaluated for the granular and/or columnar ice in the sample. Test results are interpreted with respect to these parameters. The overall composition of multi-year ridges is considered, based on the extensive field sampling that was done in the program. The effect of sample orientation on the results is also discussed.
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    Pages: iii, 32 Seiten , Illustrationen
    Series Statement: CRREL Report 88-5
    Language: English
    Note: CONTENTS Abstract Preface Introduction Sample analysis Continuous multi-year ridge core Tested multi-year ridge ice samples Unconfined constant-strain-rate compression tests Confined constant-strain-rate compression tests Uniaxial constant-strain-rate tension tests Discussion Conclusion Literature cited Appendix A: Multi-year ridge sample data
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  • 75
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-85/17
    In: CRREL Report, 85-17
    Description / Table of Contents: This report presents the results of tests of the ice friction coefficient carried out during the May 1984 expedition of the F.S. Polarstern off the coast of Labrador. The test surfaces were Inerta-160-coated steel plates and bare steel plates, hand roughened and sandblasted. The main findings of the studies were: 1) columnar and granularpea ice showed no significant differences in friction coefficient; 2) for columnar ice was independent of ice crystal orientation with respect to test surface; 3) was Independent of normal pressure applied on ice sample; 4) initially decreased with increasing relative velocity between the Ice sample and the test surface and reached a steady value at higher speeds; 5) Uk increased with increasing surface roughness; 6) a wetting surface exhibited a higher friction coefficient than a non-wetting surface of the same or even higher roughness average.
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    Pages: iv, 26 Seiten , Illustrationen
    Series Statement: CRREL Report 85-17
    Language: English
    Note: CONTENTS Abstract Preface Introduction Test procedure Test apparatus Test surfaces Ice samples Test program Results and discussion Effect of wear of ice sample Effect of normal pressure Effect of velocity, crystal orientation and surface conditions Results summary Comparison with laboratory study Recommendations on test apparatus Literature cited Appendix A : Test results
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  • 76
    Call number: AWI NBM-19-92759
    Type of Medium: Non-book medium
    Pages: 1 Videokassette (VHS, 58 Min.) : farbig , 58 min
    Language: English
    Note: A message to the world .... Antarctica, the last true wilderness, must remain inviolate, free from polution and exploitation, a living laboratory for scientific research and a continent of unsurpassed beauty for the inspiration of mankind.
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  • 77
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    Series available for loan
    Leipzig : Academy of Sciences of the GDR, Central Institute of Isotope and Radiation Research
    Associated volumes
    Call number: AWI G6-19-91927-4
    In: Third Working Meeting Radioisotope Application and Radiation Processing in Industry, Vol. 4
    Type of Medium: Series available for loan
    Pages: XIX, Seite1097-1458 , Illustrationen
    Language: English
    Note: VOLUME IV PART 2: POSTER CONTRIBUTIONS (continued) P. Rudolph, A. Lange, J. Flachowsky: THE DETERMINATION OF GOLD DEPTH DISTRIBUTION IN SEMICONDUCTOR SILICON - POTENTIAL INTERFERENCES INHERENT IN NAA BY RADIATION DAMAGES E. Hoentsch, J. Flachowsk: INVESTIGATION OF NICKEL-PLATING ON SEMICONDUCTOR SILICON WAFERS K. Mauersberger, J. Flachowsky: POSSIBLE LOSSES OF TRACE AND ULTRATRACE ELEMENTS DURING PRECONCENTRATION OF SEMICONDUCTOR-GRADE REAGENTS H. Wagler, J. Flachowsky: A SIMPLE CHEMICAL METHOD FOR THE SEPARATION OF PHOSPHORUS INTERFERING THE TRACE ELEMENT DETERMINATIONS BY NEUTRON ACTIVATION ANALYSIS IN HIGH DOPED SILICON WAFERS H.-J. Große, J . Adler, H.-R. Döring, H. Nietzschmann: APPLICATION OF THE AEROSOLIONIZATION GAS ANALYZER AIG IN MICROELECTRONICS M. Kosinova, P. Tendera: WEAR INVESTIGATION OF MACHINE PARTS BY CHARGED PARTICLES SURFACE ACTIVATION J. Kras: DETERMINATION OF SLIDE BEARINGS WEAR IN DIESEL ENGINES K. Eichhorn, P. Hammer, S. Turuc, Ch. Eifrig: PRECISE ACTIVATION FOR WEAR STUDIES AT THE ROSSENDORF TANDEM ACCELERATOR P. Hammer, K. Eichhorn, Ch. Eifrig: A STUDY OF WEAR IN REFRIGERATING MACHINES USING THIN LAYER ACTIVATION A. Kalicki., L. Waliś: THE PRINCIPLE OF THE β-X INTERNAL EXCITATION APPLICATION FOR DETERMINATION OF ELEMENTS IN THIN METALLIC FILMS E. Kowalska, P. Urbański: DETERMINATION OF TIN AND LEAD IN GALVANIC BATH AND LEAD IN Sn-Pb PLATINGS WITH SIMULTANEOUS COATING THICKNESS MEASUREMENT K. Mauersberger, B. Bayerl: DETERMINATION OF Tc-99 BY FLAME AAS B. Machaj, F. Zrudelny, A. Sikora, J. Jaszczuk: MICROPROCESSOR ISOTOPE GAUGES FOR MEASUREMENT OF COATING THICKNESS AND OF AIR DUST POLLUTION Z. Joks, M. Krejci: APPLICATION OF RADIOISOTOPES FOR CORROSION TESTS OF INDUSTRIAL PLASTICS G. Hartmann, P. Kulicke, C. Jonas, A. Walter: INVESTIGATION ON CHLORIDE-INITIATED STRESS CORROSION OF STAINLESS STEEL BY USE OF CHLORINE-36 AND AUTORADIOGRAPHY J. Flachowsky, P. Kulicke, G. Hartmann, N. Schütze: LOCALIZATION OF THE ORIGIN OF DEFECTS IN HIGH-CLASS CASTINGS BY RADIOTRACER TECHNIQUES AND AUTORADIOGRAPHY H. Kupsch, H. Bruchertseifer, W. Heller: METHOD FOR THE RAPID DETECTION OF LEAKAGES IN OIL PIPES A.G. Chmielewski: RADIOTRACERS IN SOME INDUSTRIAL AND ENVIRONMENTAL PROBLEMS S. Szpilowski, A. Owczarczyk: INVESTIGATION OF TRANSPORT OF EFFLUENT IN NATURAL STREAMS USING RADIOISOTOPE AND DYE TRACERS A. Owczarczyk, s. Szpilowski: APPLICATION OF RADIOISOTOPE TRACERS FOR BEDLOAD SEDIMENT TRANSPORT STUDY IN RIVERS AND MARINE BREAKER ZONE I. Röske, H.-C. Abendroth, D. Luther, H.-G. Könnecke: TRACER STUDIES ON THE REMOVAL OF WATER ENDANGERING SUBSTANOES FROM MUNICIPAL WASTE WATERS A. Zeuner, F. Hartmann: RESIDENCE TIME INVESTIGATION AND MATERIAL BALANCE FOR FRESH AND WASTE WATER IN A RAYON BY RADIOISOTOPE APPLICATION A.G. Chmielewski, A. Dobrowolski: THE FALL OF EQUALIZATION MYTH-RADIOTRACER INVESTIGATIONS OF THE CASE J. Halova, J. Schön, J. Thýn: THE ANALYSIS OF DATA FROM TRACER EXPERIMENTS WITH THE FLOW APPARATUSES FOR RADWASTE MANAGEMENT S. Mothes, P. Popp, G. Oppermann, J. Baumbach: AIR POLLUTION MEASUREMENTS WITH ELECTRON CAPTURE DETECTORS (ECD) C. Ghounchev: ACTIVATION ANALYSIS OF HEAVY METALS IN SOIL AND PLANTS IN SOME INDUSTRIAL REGIONS OF THE COUNTRY M. Borkowski, W. Smulek: RADIONUOLIDES IN STUDYING THE SORPTION OF METALS BY CHITIN AND CHITOSAN R. Bäuerlein: EVALUATION OF THE DEGREE OF CROSSLINKING OF HEAT SHRINKABLE PRODUCTS K. Posselt, W. Hädrich: CHARACTERIZATION OF THE DEGREE OF CROSS-LINKING IN RADIATION CROSS-LINKED LOW AND HIGH DENSITY POLYETHYLENES E. Takács: RADIATION CROSS-LINKING OF PLASTICIZED PVC WITH POLYFUNCTIONAL MONOMERS W. Hädrich, K. Posselt, C. Lippmann, H. Wagner, H.-J. Heinrich: DEPTH DOSE IN ELECTRON IRRADIATED POLYETHYLENE LAYERS IN DEPENDENCE ON THE ANGLE OF INCIDENCE U. Decker, J. Bös, L. Richter, M. Remer: CHARGE ACCUMULATION AND STORAGE IN POLYETHYLENE IRRADIATED WITH PULSES OF FAST ELECTRONS E. Jaworska: THE INFLUENCE OF IRRADIATION TEMPERATURE ON STRESSES IN DEFORMED POLYETHYLENE W. Hädrich, T. Nestler, K. Posselt: THERMAL STRESS IN THE POLYETHYLENE INSULATION OFCABLES DURING IRRADIATION WITH HIGH ENERGY ELECTRONS W. Pekala, T. Achmatowicz: POST-RADIATION GRAFTING OF METHACRYLIC ACID ONTO POLYETHYLENE FILM J. Schmidt, H. Mai: ELECTRON BEAM CURING OF COATINGS E. Jaworska, S. Wawrzak, I. Kaluska: HEAT SHRINKABLE TAPES IN POLAND A. Robalewski et al.: POLISH HEAT SHRINKABLE TUBING TECHNOLOGY S. Galant, W. Pekala, J. Rosiak: USING OF THE RADIATION TECHNOLOGY TO THE PREPARATION OF POLYMERIC MATRIX CAPABLE TO THE CONTROLLED RELEASE OF DRUG TO EYE R. Krejzler et al.: NEW ROUTINE POLYETHYLENE DOSIMETER: DOSE RANGE 40-400 kGy Z. Zimek: THE USE OF ELECTRICAL SENSORS OF RADIATION FOR DIGITAL CONTROL IN RADIATION PROCESSING Z. Bulhak et al.: RADIATION STERILIZATION WITH THE ELECTRON LINEAR ACCLERATOR LAE 13/9 M. Remer, W. Bogus, W. Pekala: FIRST EVALUATION OF THE GAMMA IRRADIATION CHAMBER OF THE TU ŁODZ BY MEANS OF THE CODES DOSKMF2 AND ISORADL O. Brede, R. Hermann, R. Mehnert: ORGANIC COOLANTS FOR NUCLEAR REACTORS W. Wroński, J. Wisłowski: THE LABORATORY TESTING SYSTEM FOR RADIATION RESISTANCE INVESTIGATIONS OF INTEGRATED CIRCUITS AUTHOR INDEX
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  • 78
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-92/17
    In: CRREL Report, 92-17
    Description / Table of Contents: The CRREL Instrumented Vehicle (CIV), shear annulus, direct shear, andtriaxial compression devices were used to characterize the strength ofthawed and thawing soil. These strength values can be used in simpletraction models to predict the tractive performance of vehicles. Strength was evaluated in terms of the parameters c' and Φ' based on the Mohr-Coulomb failure criterion. It is proposed here that an instrumented vehicle is best suited for terrain characterization for mobility studies because the conditions created by a tire slipping on a soil surface are exactly duplicated. The c' and Φ' values from the shear annulus were found to overpredict traction because of the low normal stress applied by the annulus and the curved nature of the failure envelope. Of all the tests, the direct shear test yielded the highest Φ' value, most likely because the test was run at a slow deformation rate under drained conditions. The triaxial test results were the most similar to those from the vehicle. All test methods show Φ' increasingwith soil moisture up to the liquid limit of the soil and then decreasing. As measured with the vehicle, was also found to be strongly influenced by the thaw depth.
    Type of Medium: Series available for loan
    Pages: 17 Seiten , Illustrationen
    Series Statement: CRREL Report 92-17
    Language: English
    Note: CONTENTS Introduction Objective Background Strength measurement techniques Triaxial compression Direct shear Shear annulus device CRREL Instrumented Vehicle Discussion Comparison of methods Influence of soil conditions Traction prediction Conclusions References Abstract
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  • 79
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-93/9
    In: CRREL Report, 93-9
    Description / Table of Contents: Traction on winter surfaces was measured using three test vehicles, each designed to measure traction for a different purpose: vehicle mobility research (CRREL Instrumented Vehicle), commercial tire testing (Uniroyal- Goodrich traction tester), and airport runway safety (Saab friction tester). The traction measured with each method is comparable, but there are systematic differences due to the effects of the surface material and the test and analysis technique. This comparison serves as the fundamental basis for collaboration between the various traction testing communities and illustrates the need for well documented test procedures and data analysis as a standard for traction testing and evaluation.
    Type of Medium: Series available for loan
    Pages: iii, 21 Seiten , Illustrationen
    Series Statement: CRREL Report 93-9
    Language: English
    Note: CONTENTS Preface Introduction Traction test methods Saab friction tester Uniroyal-Goodrich traction tester CRREL Instrumented Vehicle Surfaces tested Reporting results and terminology Factors influencing traction Results Traction curves for each surface Traction coefficients Conclusion Literature cited Appendix A: Vehicle instrumentation and samples of graphic output Appendix B: Comparison of measured traction coefficients with published andpredicted values Abstract
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  • 80
    Call number: ZSP-201-93/11
    In: CRREL Report, 93-11
    Description / Table of Contents: A laboratory study of the behavior of snow under shock wave loading and unloading conditions was conducted using a 200-mm-diameter gas gun to generate loading waves in snow samples with initial densities of 100 to 520 kg m-3 at temperatures of -2 to -23 deg C. Stress levels were 2 to 40 MPa. The response of snow to shock wave loading was measured as a function of distance from the impact plane using embedded stress gauges. Large impedance differences between snow and the stress gauges produced complex stress histories. A finite element model, along with a simple analytical model of the experiment, was used to interpret the stress histories. Snow deformation was not affected by initial temperature, but was found to be rate dependent. The initial density of the snow determined its pressure-deformation path. The pressure needed to compact snow to a specific final density increases with decreasing initial density. The release moduli increased nonlinearly from 50 MPa at a snow pressure of about 15 MPa to 2700 MPa at a snow pressure of about 40 MPa.
    Type of Medium: Series available for loan
    Pages: iii, 150 Seiten , Illustrationen
    Series Statement: CRREL Report 93-11
    Language: English
    Note: CONTENTS Preface Introduction Experimental equipment and methods Gas gun Snow target assembly Data acquisition Experimental procedure Measured data Stress histories Snow characterization Data analysis Recommendations Experimental methods Experimental needs Summary Literature cited Appendix A : Stress-time data plots Appendix B: Tabulated stress-time data Abstract
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  • 81
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/26
    In: CRREL Report, 76-26
    Description / Table of Contents: Debris over a 44-mile stretch of the Chena River was studied. The study area extended from the first bridge on the Chena Hot Springs Road to the Chena River Flood Control damsite. The purpose of the study was to assess the potential danger to the Chena River Flood Control Dam outlet structure. Debris was catalogued, log jams were measured, and sources of debris were studied. The average size of logs was determined, as well as the number of logs present on the river. The authors concluded that a serious debris problem existed and would remain serious for the foreseeable future. Recommendations for debris handling were made.
    Type of Medium: Series available for loan
    Pages: iv, 17 Seiten , Illustrationen
    Series Statement: CRREL Report 76-26
    Language: English
    Note: Contents Abstract Preface Summary Introduction Origin of debris Volume, magnitude Types of debris Hazards of the debris Recommended measures to counteract log jamming Conclusions and recommendations Future work Epilogue Selected bibliography Appendix: Additional photographs of Chena River debris
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  • 82
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-89/25
    In: CRREL Report, 89-25
    Description / Table of Contents: This study provides a detailed chemical and structural profile of first-year and multiyear Arctic sea ice. Ice cores were collected during April- May 1986 and 1987 near Prudhoe Bay, Alaska. Concentrations of Cl, Br, SO4, Na, Ca, K, Mg, PO4, SiO4, NO3, NO2 and NH4 were determined for samples chosen on the basis of structural ice type. Chemical and statistical analyses indicate that finer-grained structures incorporate more impurities and that major ion chemistry is controlled almost entirely by salinity. Mg is enriched in the ice indicating precipitation is occurring at temperatures higher than previously reported. K is depleted in the ice suggesting preferrential drainage. Ratios of the major ions are the same for first-year and multiyear ice and are similar to that of seawater indicating that as the ice ages no significant changes occur in ice chemistry. Nutrient concentrations in the ice are enriched with respect to the underlying water, indicating that biological activity occurs in the ice and processes other than the overall salinity effect and brine drainage are affecting nutrient concentrations within the ice.
    Type of Medium: Series available for loan
    Pages: vi, 144 Seiten , Illustrationen
    Series Statement: CRREL Report 89-25
    Language: English
    Note: CONTENTS Abstract Preface Introduction Background Formation, growth, and structure of sea ice Oceanic frazil production Multiyear ice Equilibrium growth Summer ice decay Annual layering Salinity distribution in sea ice Chemistry of sea ice Study area description Objectives Methodology Sample collection Blanks Chemical analyses Thin sections Data reduction Results and discussion First-year ice Multiyear ice Comparison of first-year and multiyear ice Summary Conclusions Future work References Appendix A: Concentration of chemical species in sea ice as reported in the literature Appendix B: Ice and water data Appendix C: Linear regression data
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  • 83
    Call number: ZSP-201-90/9
    In: CRREL Report, 90-9
    Description / Table of Contents: In 1986, a mobility model was developed for predicting the traction and motion resistance of both wheeled and tracked vehicles on shallow snow, and a winter field season was dedicated to gathering mobility data for a diverse family of vehicles (including four on wheels and three tracked) to validate the model. The original version of the model, SSM 1.0, used the Mohr-Coulomb shear failure equation from soil mechanics to predict gross traction. This required input of the snow strength parameters c and ȹ. Motion resistance is predicted by calculating the amount of work done by the tire in compacting snow and only requires snow depth and density values as input snow properties. Some effort was expended in determining an easy and reliable method of obtaining snow strength established from past instrumented vehicle test results. Historically, shear annulus apparati have been used to obtain Mohr-Coulomb strength parameters. A comparison of snow strength obtained via these three methods (shear annulus, instrumented vehicle, calculated from initial density using the relationship in SSM 1.0) for individual snow covers showed no agreement. SSM 1.0 assumed that snow strength parameters for mobility prediction were a function of initial snow density; however, traction is developed in the compacted snow under the driving element, whose strength properties bore little relation to those of the initial snow. It appears that the shear strength of the compacted snow is essentially a constant for all of the vehicles and snow covers tested here. Based on this finding, a new traction algorithm was developed, resulting in the creation of a second generation model, SSM 2.0. This algorithm predicts gross traction, on the average for the vehicles tested, within 7% of the measured value. Motion resistance prediction remains unchanged in SSM 2.0. This quantity is still not predicted with a desirable level of accuracy.
    Type of Medium: Series available for loan
    Pages: v, 72 Seiten , Illustrationen
    Series Statement: CRREL Report 90-9
    Language: English
    Note: CONTENTS Preface Nomenclature Introduction Background Field experiments Test location and test sites Test vehicles Test procedures Results CIV traction and motion resistance Wheels/trackcs vehicles traction and motion resistance Shear annulus device Accuracy and limitations of data Snow conditons Analysis Determination of snow strength parameters Traction analysis Traction model predictions Resistance analysis Resistance model predictions Conclusions and recommendations Literature cited Appendix A: Shallow snow mobility model, version 1.0 Appendix B: Test vehicle data Appendix C : Selected test data Appendix D : Snow data Appendix E: Shallow snow mobility model code, version 2.0 Abstract
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  • 84
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-91/5
    In: CRREL Report, 91-5
    Description / Table of Contents: An analysis of the National Science Foundation's surface vehicle fleet in Antarctica is reported on here. Surface vehicle needs have been determined through interviews of vehicle users, managers and maintainers, and from direct on-site observation. An ideal grouping of vehicle categories is proposed that will address current needs and provide flexibility for the future. Ultimately, recommendations for streamlining and modernizing the NSF Antarctic vehicle fleet are made. Cargo transportation over snow was identified as being in a crisis state. Personnel movement functions for all but traversing are performed adequately at this time, although there is much room for improvement. Brands and models must be selected for some categories of recommended vehicle types. This will naturally follow a more in-depth analysis of candidates and discussions with NSF vehicle managers. A purchasing plan, including a time table, budget, and desired sequence of replacement, must then be formulated and executed.
    Type of Medium: Series available for loan
    Pages: v, 71 Seiten , Illustrationen
    Series Statement: CRREL Report 91-5
    Language: English
    Note: CONTENTS Preface Executive summary Introduction Regional divisions Zone A - rock and ice roads Zone B - local ice Zone C - traverse Zone D - ice edge Zone E - remote field site Zone F - inland station Current transportation needs in Antarctica Future transportation needs Transportation analysis Personnel transport Cargo transport Summary of analysis Recommendations for changes to U.S. vehicle fleet Conclusions and summary of findings Literature cited Appendix A: Age distribution of NSF surface vehicles Abstract
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  • 85
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-91/12
    In: CRREL Report, 91-12
    Description / Table of Contents: Field trials using a man-portable Geonics, Ltd., EM31 electromagnetic induction sounding instrument, with a plug-in data processing module, for the remote measurement of sea ice thickness, are discussed. The processing module was made by Flow Research Inc., to directly measure sea ice thickness and show the result in a numerical display. The EM31-processing module system was capable of estimating ice thickness within 10% of the true value for ice from about 0.7 to 3.5 m thick, the oldest undeformed ice in the study area. However, since seawater under the Arctic pack ice has a relatively uniform conductivity (2.5 + or - 0.05 S/m), a simplified method, which can be used for estimating sea ice thickness using jet an EM31 instrument, is discussed. It uses only the EM31's conductivity measurement, is easy to put into use and does not rely on theoretically derived look-up tables or phasor diagrams, which may not be accurate for the conditions of the area.
    Type of Medium: Series available for loan
    Pages: iv, 23 Seiten , Illustrationen
    Series Statement: CRREL Report 91-12
    Language: English
    Note: CONTENTS Preface Introduction EM 31 Sounding concepts Previous EMI studies Beaufort Sea field trials EM 31 Conductivity reading versus sea ice thickness General comments Literature cited Abstract
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  • 86
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-92/14
    In: CRREL Report, 92-14
    Description / Table of Contents: Large ice jams on the Salmon River have reached Salmon, Idaho, and resulted in major flood damage during 16 winters since the winter of 1936-37. Two recent ice jams, in February 1982 and January 1984, caused flooding that resulted in damages of $1 million and $1.8 million respectively. A detailed analysis of the winter air temperature records from 1936-37 through 1991-92 revealed a strong relationship between the duration and intensity of severe cold periods, the air temperature record prior to the severe cold periods, and the occurrence of ice jams reaching the city of Salmon that result in flooding. A threshold condition is identified from which the probability of icejams reaching the city can be determined from inspection of forecasted air temperatures. It was found that once an icejam reaches the city, average daily air temperatures of approximately 18 deg F are necessary to keep the jam in place. The effects of discharge on ice thickness, and therefore ice jam length, are shown to be minor and no relation could be found in this study. An ice control structure located upstream of the city of Salmon appears to be helping to alleviate ice-jam flooding.
    Type of Medium: Series available for loan
    Pages: iv, 18 Seiten , Illustrationen
    Series Statement: CRREL Report 92-14
    Language: English
    Note: CONTENTS Preface Conversion factors Introduction Data sources and analysis Air temperature records Air temperature curves Air temperature record analysis Discharge records Results Phase 1 Phase 2 Phase 3 Effects of discharge Salmon River ice control Conclusions Literature cited Abstract
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  • 87
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/41
    In: CRREL Report, 76-41
    Description / Table of Contents: Eight Geoceiver stations were established and suitably marked along or near the crestiline of the Greenland ice sheet during GISP field operations from 1971 to 1975. At one of these stations, DYE-3, repeated Geoceiver positions indicate an ice velocity of 12.7 m.yr on an azimuth of approximately 60 degrees. Data from the International Greenland Glaciological Expedition (EGIG) surveys show that ice flow in the vicinity of Crete is radiating outward from a dome to the south. Two independent calculations of the state of equilibrium at Crete indicate ice sheet thinning rates of 0.25 to 0.37 m/yr, while direct measurement of elevation change by EGIG indicates an ice sheet thickening rate of difference of 0.06 m/yr. Resolution of these differences must await further geophysical work and deep drilling in the ice sheet.
    Type of Medium: Series available for loan
    Pages: iii, 13 Seiten , Illustrationen
    Series Statement: CRREL Report 76-41
    Language: English
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  • 88
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/44
    In: CRREL Report, 76-44
    Description / Table of Contents: The deformation of wet snow is explained in terms of the thermodynamics of the three phases of water. When deformation by particle rearrangement is fully developed, deformation can occur most rapidly by melting at the particle contacts. The rate of deformation is highly sensitive to the liquid water content, ionic impurity content, particle contact area, and stress level. A model of the hydrostatic deformation of wet snow is constructed, and examples of the deformation of wet snow are given for a variety of conditions. These results are in agreement with existing experimental evidence. The model accurately simulates the transient nature of the deformation and the effect of water content on the quasi-stable density of wet snow subjected to a constant stress.
    Type of Medium: Series available for loan
    Pages: iv, 9 Seiten , Illustrationen
    Series Statement: CRREL Report 76-44
    Language: English
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  • 89
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/43
    In: CRREL Report, 76-43
    Description / Table of Contents: Ice fog generated at the Eielson AFB power plant cooling pond contributes heavily to the total ice fog problem on the base. Several methods for ice fog suppression were studied and two techniques were tested experimentally. Experiments were also conducted to determine the magnitude of the various modes of heat transfer within the pond's microclimate. Values of evaporative and radiative heat loss during ice fog are presented. Ice cover is shown to be an effective ice fog suppression technique. Monomolecular films are also shown to be effective and offer some unique advantages, such as ease of application and low overall cost. The heat normally lost to evaporation must be dissipated by other means during suppression. With the ice cover technique this is accomplished by melting the ice cover. During suppression with monomolecular films, the heat must be dissipated by increasing radiative and convective losses. The simplicity of application of monomolecular films, along with their lower cost, combine to make this technique attractive; however, the lower pond temperatures and increased suppression effectiveness weigh heavily in favor of the ice-cover technique.
    Type of Medium: Series available for loan
    Pages: viii, 86 Seiten , Illustrationen
    Series Statement: CRREL Report 76-43
    Language: English
    Note: CONTENTS Abstract Preface List of symbols Conversion factors: U.S. customary to metric units of measurement Introduction Section I. Ice fog Section II. Evaporation Bowen's equation Evaporation equation Evaporation measurements during ice fog conditions Evaporation measurements at Eielson Power Plant cooling pond Data analysis Section Ill. Radiation during ice fog Brunt's equation Ångström equation Elsasser's equation Cloud cover Reflection Field experimental results Analysis of experimental results Radiation equations for ice fog Transmissivity of ice fog Radiation model Wind effect Summary Section IV. Convection Convective heat transfer theory Rotem and Claassen equation Kay's approach Russian approach Analysis Heat budget at the surface Conclusions Section V. Ice fog suppression techniques Fans Injection wells Latent heat storage Monomolecular films Use of heated water from the cooling pond Section VI. Latent heat storage experiments Freezing rates Cooling pond Ice building Ice growth rate -maximum system limitation Evaporation heat loss -maximum Realistic growth rate Ice building techniques Ice volume measurements Melting experiments Ice fog suppression considerations Experimental results Section VII. Recommendations and conclusions Hexadecanol studies Injection well suppression Latent heat storage suppression Comparison of approaches Measurements of evaporation Measurements of radiation loss Convective heat losses Ice fog suppression Selected bibliography Appendix A. Convective heat transfer coefficient from water to ice and from ice to air
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  • 90
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/46
    In: CRREL Report, 76-46
    Description / Table of Contents: The topological properties of 10 stream networks having moderate to well developed trellis drainage patterns have been compared with those expected in a topologically random population. Magnitude 4 subnetworks show a systematic departure from expectation which can be related to geological controls. A link type classification system was developed and a series of equations describing the probability of occurrence of link types in topologically random populations derived. Analysis of the link structure in the channel networks showed small but persistent deviations from expectation in the well developed trellis pattern streams. The general conclusion is that the topologically random model is a very useful standard with which to compare real channel networks.
    Type of Medium: Series available for loan
    Pages: vi, 54 Seiten , Illustrationen
    Series Statement: CRREL Report 76-46
    Language: English
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  • 91
    Call number: AWI G2-19-93054
    Type of Medium: Monograph available for loan
    Pages: 57 Blätter , Illustrationen
    Language: English , German
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  • 92
    Monograph available for loan
    Monograph available for loan
    Athens : Institute of Geological and Mining Research
    Call number: AWI G1-19-93055
    Type of Medium: Monograph available for loan
    Pages: 58 Seiten, 10 Blätter , Illustrationen
    Language: English
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  • 93
    Monograph available for loan
    Monograph available for loan
    [Erscheinungsort nicht ermittelbar] : Arbeitsgemeinschaft Stabile Isotope
    Call number: AWI G6-19-93056
    Type of Medium: Monograph available for loan
    Pages: 31 Blätter
    Language: English , German
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  • 94
    Call number: AWI G6-19-93060
    Type of Medium: Monograph available for loan
    Pages: 6 Seiten, 29 Blätter, 7 Seiten
    Language: German , French , English
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  • 95
    Call number: AWI G6-19-93207
    Type of Medium: Monograph available for loan
    Pages: 42 Blätter
    Language: English , German
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  • 96
    Call number: ZSP-SCAR-701
    Type of Medium: Series available for loan
    Language: English
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  • 97
    Call number: AWI Bio-20-93530
    Description / Table of Contents: The Arctic tundra, covering approx. 5.5 % of the Earth’s land surface, is one of the last ecosystems remaining closest to its untouched condition. Remote sensing is able to provide information at regular time intervals and large spatial scales on the structure and function of Arctic ecosystems. But almost all natural surfaces reveal individual anisotropic reflectance behaviors, which can be described by the bidirectional reflectance distribution function (BRDF). This effect can cause significant changes in the measured surface reflectance depending on solar illumination and sensor viewing geometries. The aim of this thesis is the hyperspectral and spectro-directional reflectance characterization of important Arctic tundra vegetation communities at representative Siberian and Alaskan tundra sites as basis for the extraction of vegetation parameters, and the normalization of BRDF effects in off-nadir and multi-temporal remote sensing data. Moreover, in preparation for the upcoming German EnMAP (Environmental Mapping and Analysis Program…
    Type of Medium: Dissertations
    Pages: circa 330 Seiten , Illustrationen, Diagramme
    Language: English
    Note: TABLE OF CONTENTS Abstract Kurzfassung Table of Contents List of Figures List of Tables List of Abbreviations List of Symbols 1 INTRODUCTION 1.1 Background and Scientific Setting 1.2 Motivation and Research Questions 1.3 Structure of Thesis 2 FUNDAMENTALS OF HYPERSPECTRAL AND SPECTRO-DIRECTIONAL REMOTE SENSING 2.1 Hyperspectral Remote Sensing of Vegetation 2.2 Spectro-Directional Remote Sensing of Vegetation 2.3 The EnMAP Satellite System 2.4 Spectro-Goniometer Systems for the Ground-Based Measurement of BRDF Effects 3 THE TUNDRA PERMAFROST STUDY LOCATIONS AND THEIR ENVIRONMENT 3.1 The Eurasia Arctic Transect (EAT) 3.1.1 Geological and Climatic Setting 3.1.2 Vegetation 3.2 The North American Arctic Transect (NAAT) 3.2.1 Geological and Climatic Setting 3.2.2 Vegetation 4 OBSERVATIONS AND METHODOLOGY 4.1 Observations Used for this Study 4.1.1 The ECI-GOA-Yamal 2011 Expedition 4.1.2 The EyeSight- NAAT-Alaska 2012 Expedition 4.1.3 Data Used for Hyperspectral Characterization of Arctic Tundra 4.1.4 Data Used for Spectro-Directional Characterization of Arctic Tundra 4.2 Methodology Used for Field Work and Data Analysis 4.2.1 Field Spectroscopy and Hyperspectral Data Analysis 4.2.2 Considerations for the Field Spectro-Goniometer Measurements and the Spectro-Directional Data Analysis 5 DEVELOPMENT AND PRECOMMISSIONING INSPECTION OF THE MANTIS FIELD SPECTRO-GONIOMETER 5.1 Introduction 5.2 Theoretical Background 5.3 Description of the Field Spectro-Goniometer System 5.3.1 Construction Schedule 5.3.2 Description of the Field Spectro-Goniometer Platform (ManTIS) 5.3.3 Sensor Configuration of the AWI ManTIS Field Spectro-Goniometer 5.3.4 Measurement Strategy 5.3.5 Software for Semi-Automatic Control 5.4 Error Assessment 5.4.1 Radiometrical Accuracy 5.4.2 Pointing Accuracy 5.4.3 Ground Instantaneous Field of View and Sensor Self-Shadowing 5.4.4 Temporal Illumination Changes and Environmental Influences 5.5 Data Analysis 5.5.1 Data Processing 5.5.2 Data Visualization 5.6 Performance of ManTIS Field Spectro-Goniometer in the Field 5.6.1 Test Site and Experiment Setup 5.6.2 Results and Discussion 5.7 Conclusions and Outlook 6 HYPERSPECTRAL REFLECTANCE CHARACTERIZATION OF LOW ARCTIC TUNDRA VEGETATION 6.1 Introduction 6.2 Material & Methods 6.2.1 Study Area 6.2.2 Environmental Gradients/Zones and Vegetation Description 6.2.3 Data Acquisition and Pre-Processing 6.2.4 Data Analysis 6.3 Results 6.3.1 The Zonal Climate Gradient 6.3.2 Acidic Versus Non-Acidic Tundra (Soil pH Zones) 6.3.3 The Toposequence at Happy Valley (Subzone E) 6.3.4 The Soil Moisture Gradient at Franklin Bluffs (Subzone D) 6.4 Discussion 6.4.1 Overview of Field Characterization and Spectral Properties along the Gradients 6.4.2 Performance of Spectral Metrics and Vegetation Indices 6.5 Conclusions 7 RESULTS OF THE SPECTRO-DIRECTIONAL REFLECTANCE INVESTIGATIONS 7.1 Overview of the Spectro-Directional Reflectance Characteristics of Low Arctic Tundra Vegetation 7.1.1 Representativeness of the Study Plots Representing Tundra Vegetation 7.1.2 Vaskiny Dachi – Bioclimate Subzone D 7.1.3 Happy Valley – Bioclimate Subzone E 7.1.4 Franklin Bluffs – Bioclimate Subzone D 7.2 Influence of High Sun Zenith Angles on the Reflectance Anisotropy 7.2.1 MAT (Happy Valley) 7.2.2 MNT (Franklin Bluffs) 7.3 Variability in Multi-Angular Remote Sensing Products of Low Arctic Tundra Environments 7.3.1 Spectro-Directional Variability of Different Low Arctic Plant Communities 7.3.2 Spectro-Directional Variability under Varying Sun Zenith Angles 8 DISCUSSION 8.1 The Hyperspectral Reflectance Characteristics of Tundra Vegetation in Context of the Spectro-Goniometer Measurements 8.2 Applicability of the ManTIS Field Spectro-Goniometer System 8.3 The Spectro-Directional Reflectance Characteristics of Tundra Vegetation 8.4 Variability in Reflectance Anisotropy at High Sun Zenith Angles 8.5 Applicability of Multi- Angular Remote Sensing Products for Arctic Tundra Environments 9 CONCLUSIONS & OUTLOOK Acknowledgments References Appendix Table of Contents of the Appendix References of the Appendix Statutory Declaration / Eidesstattliche Erklärung
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  • 98
    Call number: ZSP-201-82/19
    In: CRREL Report, 82-19
    Description / Table of Contents: Under proper design and management, a forest ecosystem in the central United States should renovate municipal wastewater as long or longer than conventional agricultural systems, especially when design limitations are hydraulic loading rate, heavy metals, P and N. Forest systems require smaller buffer zones than agricultural systems and lower sprinkler pressures. Immature forests are better wastewater renovators than mature forests.
    Type of Medium: Series available for loan
    Pages: iv, 22 Seiten , Illustrationen
    Series Statement: CRREL Report 82-19
    Language: English
    Note: CONTENTS Abstract Preface Introduction Forest systems design Pretreatment Distribution systems Public health considerations Buffer zone requirements Toxic effects Public access Hydraulic loading Nutrient uptake and loading Introduction Nitrogen Phosphorus Trace metals Design considerations Hydraulic loading rates Nitrogen loading rates Forest management options Reforestation Existing forest ecosystems Short term rotation plantations Potential long term effects on forest ecosystems Longevity of forest systems Consequences of overloading Soil chemical, physical and hydrologic properties Productivity Summary Literature cited
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  • 99
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/18
    In: CRREL Report, 82-18
    Description / Table of Contents: Snow and ice control on highways has come to rely heavily on the use of sodium chloride to maintain a trafficable surface for unimpeded movement. Empirical approaches have led to a wide range of application rates, some clearly excessive, but justified on the ground of safety and expediency. The combination of environmental degradation from the huge quantities of salt entering the environment, along with the increased cost of salt itself and the cost of its application have spurred the search for more precise knowledge of the proper amount of salt to apply to a pavement, considering a range of environmental, traffic and chemical parameters. Since controlled tests in the field are extremely difficult to make, a circular test track of three test pavements, dense-graded asphaltic concrete (DGA), open-graded asphaltic concrete (DGA) and portland cement concrete (PCC), was constructed in a coldroom. Natural snow and ice were applied to the pavements and an instrumented slipping wheel was driven over the surfaces to generate frictional forces. These forces were measured and then used to evaluate the response to salt application with time for three test temperatures. OGA had the lowest friction values at a temperature near the freezing point, but higher initial values or more rapidly increasing values than DGA and PCC following salt application at the two lower temperatures. Optimum application rate of salt on PCC and DGA lies between 100 and 300 lb/lane mile (LM), and a higher rate resulted in slight or no improvement in friction. DGA showed anomalous results: lower friction for 300 Ib/LM and higher friction for both 100 and 500 Ib/LM.
    Type of Medium: Series available for loan
    Pages: vi, 55 Seiten , Illustrationen
    Series Statement: CRREL Report 82-18
    Language: English
    Note: CONTENTS Abstract Preface Introduction Objectives Background Approach Influencing factors Field factors Laboratory Laboratory trafficking tests Force measurement and coefficient of friction Test tire slip Surface friction gauge Test procedure British portable tester Experimental results Conclusions Recommendations Literature cited Appendix A. Test pavements Appendix B. Pennsylvania State University field study Appendix C. Rochester Institute of Technology field study
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  • 100
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/17
    In: CRREL Report, 82-17
    Description / Table of Contents: Seismic P and SH wave refraction experiments at the NATO RSG-11 test site in Munster Nord, Federal Republic of Germany, reveal the presence of a nearly horizontal, three-layer velocity structure. The upper layer, composed of un­consolidated glacial till, is 1 m thick and has P (compressional) and SH (shear-horizontal) wave velocities of 240 and 165 m s-1. The second layer, made up of similar, more compacted material, is 9.5 m thick, with a P wave velocity of 470 m s-1 and an SH wave velocity of 275 m s-1. The third layer, interpreted as the groundwater table, is located at a depth of 10.5 m and has a P wave velocity of 1590 m s-1. The SH wave velocity of this layer is controlled by the matrix material and is the same as that of the second layer. A single, unreversed observation indicated a fourth layer at a depth of about 20 m, but the existence of this layer remains unconfirmed. The observed fundamental mode Love wave dispersion is in agreement with the theoretical dispersion predicted by the refraction velocities. Computed partial derivatives of phase velocity with respect to shear wave velocity show, for the frequencies observed, that the dispersion confirms the thicknesses and velocities of the two upper layers and is not affected by the deeper structure.
    Type of Medium: Series available for loan
    Pages: iv, 33 Seiten , Illustrationen
    Series Statement: CRREL Report 82-17
    Language: English
    Note: CONTENTS Abstract Preface Introduction Refraction experiments Procedure Equipment Results P waves Low velocity zone SH waves Surface wave experiments Summary and discussion Literature cited Appendix A: P wave refraction data Appendix B: SH wave refraction data. Appendix C: Surface wave dispersion calculations
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    Branch Library: AWI Library
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