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  • Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory  (37)
  • Berlin ; Heidelberg : Springer  (24)
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  • 1
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/36
    In: CRREL Report, 82-36
    Beschreibung / Inhaltsverzeichnis: 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.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 42 Seiten , Illustrationen
    Serie: CRREL Report 82-36
    Sprache: Englisch
    Anmerkung: 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
    Standort: AWI Archiv
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  • 2
    Signatur: PIK N 071-19-92862
    Beschreibung / Inhaltsverzeichnis: From the Contents: Material and Immaterial Cultural Transformation -- A Social Contract for Sustainability -- The Climate Paradox: Policy Declarations and Lack of Implementation; The G-20: Security & Peace Impacts -- Persistence and Transformation of Mindsets: The Canadian Case -- Theories of Transitions to Sustainable Development: Approach of the Dutch Knowledge network of Systems Innovation
    Beschreibung / Inhaltsverzeichnis: In this book 60 authors from many disciplines and from 18 countries on five continents examine in ten parts: Moving towards Sustainability Transition; Aiming at Sustainable Peace; Meeting Challenges of the 21st Century: Demographic Imbalances, Temperature Rise and the Climate-Conflict Nexus; Initiating Research on Global Environmental Change, Limits to Growth, Decoupling of Growth and Resource Needs; Developing Theoretical Approaches on Sustainability and Transitions; Analysing National Debates on Sustainability in North America; Preparing Transitions towards a Sustainable Economy and Society, Production and Consumption and Urbanization; Examining Sustainability Transitions in the Water, Food and Health Sectors from Latin American and European Perspectives; Preparing Sustainability Transitions in the Energy Sector; and Relying on Transnational, International, Regional and National Governance for Strategies and Policies Towards Sustainability Transition. This volume is based on workshops held in Mexico (2012) and in the US (2013), on a winter school at Chulalongkorn University, Thailand (2013), and on commissioned chapters. The workshop in Mexico and the publication were supported by two grants by the German Foundation for Peace Research (DSF). All texts in this book were peer-reviewed by scholars from all parts of the world
    Materialart: Monographie ausleihbar
    Seiten: xxxi, 1004 Seiten , Illustrationen, Diagramme
    ISBN: 9783319438825 , 9783319438849 (electronic)
    Serie: Hexagon series on human and environmental security and peace Volume 10
    Sprache: Englisch
    Standort: A 18 - Bitte bestellen
    Zweigbibliothek: PIK Bibliothek
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  • 3
    Signatur: PIK N 079-19-93121
    Materialart: Monographie ausleihbar
    Seiten: vi, 209 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 9783319285924
    Sprache: Englisch
    Anmerkung: Contents: Managing Water, Soil, and Waste in the Context of Global Change ; Climate Change Adaptation ; Climate Change Impacts and Adaptation in Water and Land Context ; Climate Change, Profligacy, Poverty and Destruction: All Things Are Connected ; Urbanization as a Main Driver of Global Change ; A Nexus Approach to Urban and Regional Planning Using the Four-Capital Framework of Ecological Economics ; The Urban Water–Energy Nexus: Building Resilience for Global Change in the “Urban Century” ; Population Growth and Increased Demand for Resources ; Role of Soils for Satisfying Global Demands for Food, Water, and Bioenergy ; Implications of the Nexus Approach When Assessing Water and Soil Quality as a Function of Solid and Liquid Waste Management
    Standort: A 18 - Bitte bestellen
    Zweigbibliothek: PIK Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Signatur: ZSP-201-82/19
    In: CRREL Report, 82-19
    Beschreibung / Inhaltsverzeichnis: 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.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 22 Seiten , Illustrationen
    Serie: CRREL Report 82-19
    Sprache: Englisch
    Anmerkung: 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
    Standort: AWI Archiv
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  • 5
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/18
    In: CRREL Report, 82-18
    Beschreibung / Inhaltsverzeichnis: 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.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 55 Seiten , Illustrationen
    Serie: CRREL Report 82-18
    Sprache: Englisch
    Anmerkung: 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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  • 6
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/17
    In: CRREL Report, 82-17
    Beschreibung / Inhaltsverzeichnis: 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.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 33 Seiten , Illustrationen
    Serie: CRREL Report 82-17
    Sprache: Englisch
    Anmerkung: 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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  • 7
    Signatur: ZSP-201-82/15
    In: CRREL Report, 82-15
    Beschreibung / Inhaltsverzeichnis: An experiment is described that demonstrates the balance between the ice and the unfrozen water in a frozen soil as water is removed. Nuclear magnetic resonance (NMR) is used to monitor the unfrozen water content as the soil is dehydrated by a molecular sieve material. Our results show that the unfrozen water content of a Morin clay soil remains constant until the total water content has been reduced to the point where no ice remains in the system. Once the ice is depleted, the unfrozen water content determined by NMR corresponds to the total water content of the soil determined by the weight of water removed by the molecular sieve material. Thus the validity of utilizing NMR in determining unfrozen water contents vs temperature is established.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 8 Seiten , Illustrationen
    Serie: CRREL Report 82-15
    Sprache: Englisch
    Standort: AWI Archiv
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  • 8
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/16
    In: CRREL Report, 82-16
    Beschreibung / Inhaltsverzeichnis: Abstract: A dynamic-thermodynamic sea ice model which employs a viscous-plastic constitutive law has been applied to the East Greenland area. The model is run on a 40-km spatial scale at 1/4-day time steps for a 60-day period with forcing data beginning on 1 October 1979. Results tend to verify that the model predicts reasonable thicknesses and velocities within the ice margin. Thermodynamic ice growth produces excessive ice extent, however, probably due to inadequate parameterization of oceanic heat flux. Ice velocities near the free ice edge are also not well simulated, and preliminary investigations attribute this to an improper wind field in this area. A simulation which neglects ice strength, effectively damping ice interaction with itself and allowing no resistance to deformation, produces excessive ice drift toward the coast and results in unrealistic nearshore thicknesses. A dynamics-only simulation produced reasonable results, including a more realistic ice extent, but the need for proper thermodynamics is also apparent. Other simulations verify that ice import from the Arctic Basin, and ice transport due to winds and currents, were also important components in the model studies.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 40 Seiten , Illustrationen , 29 cm
    Serie: CRREL Report 82-16
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Model description and application Results and discussion Wind and current fields Standard simulation Thermodynamic simulation Zero ice strength Zero ice import Zero currents Modified currents Zero winds Dynamics simulation Summary and concluding remarks Literature cite
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  • 9
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/10
    In: CRREL Report, 82-10
    Beschreibung / Inhaltsverzeichnis: Dielectric measurements have been performed on silt and sand samples from permafrost areas using Time Domain Reflectometry. The sample temperatures were varied from +25 °C to -25 °C, and volumetric water content was varied between oven-dry and 0.55 gH2O/cm3. The data were processed for frequencies between 0.1 and 5.0 GHz. The results show a constant K' and a low K' for frequencies up to 1 GHz. A frequency dependence seen on the data above 2 GHz is probably the result of unfrozen, adsorbed water. At moisture levels near saturation at all temperatures, these soils have excellent propagation characteristics for ground-probing radar operating below 0.3 GHz. Massive ice should be easily detectable in permafrost within a few degrees of 0 °C.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 7 Seiten , Illustrationen
    Serie: CRREL Report 82-10
    Sprache: Englisch
    Standort: AWI Archiv
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  • 10
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/11
    In: CRREL Report, 82-11
    Beschreibung / Inhaltsverzeichnis: The purpose of this investigation was to provide data to be used in evaluating the effects of winter navigation on pro­cesses that cause bank erosion. The specific objectives were to document bank conditions and erosion sites along the rivers, to monitor and compare the amounts of winter and summer bank recession and change, and to estimate the amount of recession that occurred prior to winter navigation. Shoreline conditions and bank recession were documented during field surveys each spring and fall. Bank changes were evaluated by comparison to observations from a previous survey. Aerial photointerpretation was done to estimate the amount of bank recession that occurred prior to winter navigation. Three hundred forty-five miles of river shoreline were surveyed. Banks were eroding along 21.5 miles (6.2%). The common types of bank failures were soil falls (sloughing) and block sliding and slumping. The erosion along approxi­mately 15 miles (70%) of the 21.5 miles was occurring along reaches not bordering winter navigation channels.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 75 Seiten , Illustrationen
    Serie: CRREL Report 82-11
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Previous investigations Approach Shoreline conditions Bank changes Bank recession before winter navigation St. Marys River Bank changes Bank recession before winter navigation St. Clair River Bank changes Bank recession before winter navigation Detroit River Bank changes Bank recession before winter navigation St. Lawrence River Bank changes Historical bank recession Summary and conclusions Literature cited Appendix A: St. Marys River Appendix B: St. Clair River Appendix C: Detroit River Appendix D: St. Lawrence River
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  • 11
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/7
    In: CRREL Report, 82-7
    In: Charged dislocation in ice, II.
    Beschreibung / Inhaltsverzeichnis: The contribution of electrically charged dislocation motion to dielectric relaxation was studied theoretically. Experimentally obtained data on charge density, dislocation density, and segment length and distribution described in Part I of this series were used to calculate dielectric relaxation spectra. The results indicate that the charged dislocation process can produce the observed audio frequency dielectric relaxation as well as the distribution of spectra.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 15 Seiten , Illustrationen
    Serie: CRREL Report 82-7
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Theoretical development of dielectric relaxation due to charged dislocations Numerical calculations for distributed segment length Discussion Conclusions Literature cited Appendix A. Mosotti type catastrophe by charged dislocation processes
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  • 12
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/8
    In: CRREL Report, 82-8
    Beschreibung / Inhaltsverzeichnis: A detailed analysis of methods for calculating the thermal conductivity of soils is presented, and trends in the predic­tions of these methods are compared. The influence of changes in the moisture content on the calculated thermal con­ductivity of a soil (at constant dry density) is shown, as is the sensitivity of this calculated value to changes in dry den­sity or in the soil solids’ thermal conductivity. The methods are evaluated to determine the extent of agreement of their predictions with measured values obtained on soils of known composition and properties. The deviations of the predicted values are determined for soils that are unfrozen or frozen, coarse or fine, unsaturated, saturated or dry. The applicability of each of the methods under various conditions is determined and recommendations are made as to the best method for each condition.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 90 Seiten , Illustrationen
    Serie: CRREL Report 82-8
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Analysis of methods for calculating thermal conductivity Introduction Influence of moisture content on thermal conductivity Influence of dry density on thermal conductivity Influence of soil solids’ thermal conductivity Comparison of the various methods Evaluation of methods for calculating thermal conductivity Soils data used for evaluation Computer program Applicability of the methods Discussion and conclusions Applicability to unfrozen soils Applicability to frozen soils Applicability to saturated soils Effect of soil mineral composition Applicability to dry soils Summary of applicability of methods Literature cited Appendix A: Properties of some test soils Appendix B: Comparison of thermal conductivity values computed by the various methods and of their deviations from the values measured
    Standort: AWI Archiv
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  • 13
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/9
    In: CRREL Report, 82-9
    Beschreibung / Inhaltsverzeichnis: This study deals with the distribution of forces along the converging boundaries of the Port Huron, Michigan, region where unconsolidated ice in Lake Huron is held against wind and water stresses. An experimental basin was built to induce uniform shear stress on the model ice cover by flowing water beneath the ice. The boundary segments, which held the ice cover in the region, were instrumented to measure force in the normal and tangential directions. The distribution of normal forces along the boundary was compared with as distribution derived by using a theoretical model. An ice control structure (ICS) was installed in the basin and experiments were conducted to measure the forces on the ICS and the ice release through the opening in the ICS during simulated ship passages. The experimental results are presented in a nondimensional form. In addition, the force per unit length on the ICS and the area of ice released through its opening were estimated for the expected wind conditions at the Port Huron site.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 27 Seiten , Illustrationen
    Serie: CRREL Report 82-9
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface List of symbols Introduction Theoretical models Case 1 Case 2 Case 3 Experimental program Experimental facility Scaling factors Experimental results Analysis of wind data for lower Lake Huron Summary and conclusions Release of ice through the opening of an ICS Ice forces on the ice control structure Ice forces on ice control structure from a large unconsolidated ice cover Literature cited Appendix A. Equation for the stress resultants and velocities of the ice cover Appendix B. Monthly summary of wind data at Port Huron
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  • 14
    Signatur: 9783319256436 (e-book)
    Beschreibung / Inhaltsverzeichnis: This book is a useful guide for researchers in ecology and earth science interested in the use of accelerator mass spectrometry technology. The development of research in radiocarbon measurements offers an opportunity to address the human impact on global carbon cycling and climate change. Presenting radiocarbon theory, history, applications, and analytical techniques in one volume builds a broad outline of the field of radiocarbon and its emergent role in defining changes in the global carbon cycle and links to climate change. Each chapter presents both classic and cutting-edge studies from different disciplines involving radiocarbon and carbon cycling. The book also includes a chapter on the history and discovery of radiocarbon, and advances in radiocarbon measurement techniques and radiocarbon theory. Understanding human alteration of the global carbon cycle and the link between atmospheric carbon dioxide levels and climate remains one of the foremost environmental problems at the interface of ecology and earth system science. Many people are familiar with the terms ‘global warming’ and ‘climate change’, but fewer are able to articulate the science that support these hypotheses. This book addresses general questions such as: what is the link between the carbon cycle and climate change; what is the current evidence for the fate of carbon dioxide added by human activities to the atmosphere, and what has caused past changes in atmospheric carbon dioxide? How can the radiocarbon and stable isotopes of carbon combined with other tools be used for quantifying the human impact on the global carbon cycle?
    Materialart: 12
    Seiten: 1 Online-Ressource (VII, 315 Seiten) , Illustrationen, Diagramme
    ISBN: 9783319256436 , 978-3-319-25643-6
    Sprache: Englisch
    Anmerkung: Contents 1 Radiocarbon and the Global Carbon Cycle / E.A.G. Schuur, S.E. Trumbore, E.R.M. Druffel, J.R. Southon, A. Steinhof, R.E. Taylor and J.C. Turnbull 2 Radiocarbon Dating: Development of a Nobel Method / R.E. Taylor 3 Radiocarbon Nomenclature, Theory, Models, and Interpretation: Measuring Age, Determining Cycling Rates, and Tracing Source Pools / S.E. Trumbore, C.A. Sierra and C.E. Hicks Pries 4 Radiocarbon in the Atmosphere / J.C. Turnbull, H. Graven and N.Y. Krakauer 5 Radiocarbon in the Oceans / E.R.M. Druffel, S.R. Beaupré and L.A. Ziolkowski 6 Radiocarbon in Terrestrial Systems / E.A.G. Schuur, M.S. Carbone, C.E. Hicks Pries, F.M. Hopkins and S.M. Natali 7 Paleoclimatology / J.R. Southon, R. De Pol-Holz and E.R.M. Druffel 8 Accelerator Mass Spectrometry of Radiocarbon / Axel Steinhof 9 Preparation for Radiocarbon Analysis / S.E. Trumbore, X. Xu, G.M. Santos, C.I. Czimczik, S.R. Beaupré, M.A. Pack, F.M. Hopkins, A. Stills, M. Lupascu and L. Ziolkowski
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  • 15
    Signatur: 9783319281551 (e-book)
    Beschreibung / Inhaltsverzeichnis: This textbook provides a basic introduction to ethnobiology with key concepts for beginners. It is also written for those who teach ethnobiology or related fields. The core issues and concepts, as well as approaches and theoretical positions are fully covered.
    Materialart: 12
    Seiten: 1 Online-Ressource (xii, 310 Seiten) , Illustrationen, Diagramme
    ISBN: 9783319281551 , 978-3-319-28155-1
    Sprache: Englisch
    Anmerkung: Contents Preface Acknowledgments Part I History, Approaches and Concepts What Is Ethnobiology? / Ulysses Paulino Albuquerque and Angelo Giuseppe Chaves Alves History of Ethnobiology / André Sobral and Ulysses Paulino Albuquerque Ethnobiology or Ethnoecology? / Angelo Giuseppe Chaves Alves and Ulysses Paulino Albuquerque Historical Ethnobiology / Maria Franco Trindade Medeiros Paleoethnobiology / Steve Wolverton, Andrew Barker, and Jonathon Dombrosky Urban Ethnobiology / Ana Haydeé Ladio and Ulysses Paulino Albuquerque Diaspora Ethnobiology / Robert A. Voeks Ethnophycology / Patricia Marta Arenas Gastronomic Ethnobiology / Andrea Pieroni, Lukas Pawera, and Ghulam Mujtaba Shah Ethnoprimatology / Marilian Boachá Sampaio, Antonio Souto, and Nicola Schiel An Ethnobiology of Change / Álvaro Fernández-Llamazares and Victoria Reyes-García Political Ecology and Ethnobiology / Steve Wolverton, Justin M. Nolan, and Matthew Fry Ethnobiology, Ethics, and Traditional Knowledge Protection / Gustavo Taboada Soldati and Ulysses Paulino Albuquerque Part II Biota Perception and Classification What Is Environmental Perception? / Taline Cristina da Silva, Leonardo da Silva Chaves, and Ulysses Paulino Albuquerque Biota Perception and Use / Taline Cristina da Silva, Letícia Zenóbia de Oliveira Campos, Josivan Soares da Silva, Rosemary da Silva Sousa, and Ulysses Paulino Albuquerque Biological and Evolutionary Bases of Human Perception of the Natural Environment / Washington Soares Ferreira Júnior, Taline Cristina da Silva, and Ulysses Paulino Albuquerque Risk Perception / Taline Cristina da Silva, Washington Soares Ferreira Júnior, Flávia Rosa Santoro, Thiago Antônio de Sousa Araújo, and Ulysses Paulino Albuquerque How and Why Should People Classify Natural Resources? / Andrêsa Suana Argemiro Alves, Lucilene Lima dos Santos, Washington Soares Ferreira Júnior, and Ulysses Paulino Albuquerque Alternative Views of Folk Classification / Washington Soares Ferreira Júnior, Paulo Henrique Santos Gonçalves, Reinaldo Farias Paiva de Lucena, and Ulysses Paulino Albuquerque Part III Biota Use Fungi / Washington Soares Ferreira Júnior, Paulo Henrique Santos Gonçalves, and Ulysses Paulino Albuquerque Food Plants / Viviany Teixeira do Nascimento, Letícia Zenóbia de Oliveira Campos, and Ulysses Paulino Albuquerque Medicinal Plants / Thiago Antônio de Sousa Araújo, Joabe Gomes de Melo, Washington Soares Ferreira Júnior, and Ulysses Paulino Albuquerque Fortifier, Tonic, and Rejuvenating Plants and the Adaptogen Concept / Danilo Ribeiro de Oliveira and Suzana Guimarães Leitão Magic Plants / Rainer W. Bussmann Ornamental Plants / Julio Alberto Hurrell Timber Resources / Marcelo Alves Ramos, Maria Clara Bezerra Tenório Cavalcanti, and Fábio José Vieira Animal Resources / Rômulo Romeu Nóbrega Alves Part IV Biota Management and Domestication Plant and Landscape Local Management / Ulysses Paulino Albuquerque and José Ribamar Sousa Júnior Indigenous Use of Tropical Biodiversity and Ecosystem Domestication / Maximilien Guèze Extractivism of Plant Resources / Juliana Loureiro de Almeida Campos, Ivanilda Soares Feitosa, Julio Marcelino Monteiro, Gilney Charll dos Santos, Cristina Baldauf, and Ulysses Paulino Albuquerque Plant Domestication / Ernani Machado de Freitas Lins Neto, José Ribamar Sousa Júnior, Alejandro Casas, and Ulysses Paulino Albuquerque Domestication of Animals / Rômulo Romeu Nóbrega Alves Ethnobiology and Biodiversity Conservation / Ulysses Paulino Albuquerque and Daniel Carvalho Pires de Sousa Part V Factors Affecting Local Biological Knowledge Local or Traditional Knowledge Transmission and Natural Resource Use / Gustavo Taboada Soldati Gender and Age / Wendy Marisol Torres-Avilez, André Luiz Borba do Nascimento, Leticia Zenobia de Oliveira Campos, Flávia dos Santos Silva, and Ulysses Paulino Albuquerque Ethnicity, Income, and Education / Patrícia Muniz de Medeiros, Juliana Loureiro de Almeida Campos, and Ulysses Paulino Albuquerque Urbanization, Modernization, and Nature Knowledge / Washington Soares Ferreira Júnior, Flávia Rosa Santoro, Ina Vandebroek, and Ulysses Paulino Albuquerque How Does Social Status Relate to Traditional Ecological Knowledge? / Victoria Reyes-García and Sandrine Gallois Plant Knowledge and Use in the Context of Migration / Patrícia Muniz de Medeiros, Diego Batista de Oliveira Abreu, and Ulysses Paulino Albuquerque Cultural Comparisons in Ethnobiological Research / Ina Vandebroek Dictionary of Ethnobiology and Related Areas Index
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  • 16
    Signatur: 9783319207537 (e-book)
    Beschreibung / Inhaltsverzeichnis: This book seeks to enhance the cultural dimension of sustainable development and particularly focuses on minor historic centers and their natural and rural landscapes. In a society becoming ever more globalized, without territorial restrictions in the production of goods and able to reproduce in China the goods and product characteristic of South American crafts (to mention just two extremes), the only element that can still be contextualized is heritage identity: the result of close integration between cultural assets, intangible assets and settled communities. Thus, heritage identity is one of the few elements, together with natural resources, which has the potential for economic development that is still firmly rooted in places and local populations.These towns are often the centerpiece of urban landscapes and geographical areas with original features, not always but often as individual places within networks of minor historical centers linked by shared history, traditions and/or natural elements (rivers, forests, river systems or other natural elements). They are outside the major tourist networks, even if now there is a budding interest in the touristic exploitation of these environments. So, they are the right places to pursue a sustainable and local development with a cultural perspective. This book is a product of the VIVA_EASTPART project (Valorisation and Improving of management of Small Historic Centres in the eastern PARTnership region), under the EU-funded “ENPI Eastern Partnership” program. It complements the more practically-focused work that is in production from this group, more focused on empirical approaches to the development of minor historic centers of the nations involved. Though the book has been influenced by this research and working experience, the authors are solely responsible for the content and opinions presented.
    Materialart: 12
    Seiten: 1 Online-Ressource (xiv, 386 Seiten) , Illustrationen
    ISBN: 9783319207537 , 978-3-319-20753-7
    ISSN: 2194-315X , 2194-3168
    Serie: Springer Geography
    Sprache: Englisch
    Anmerkung: Contents Part I Introduction and Background 1 Studying Cultural Territorial Systems: Introduction / Francesco Rotondo 2 The Concept of Heritage / Francesco Selicato 3 Local Self-sustainable Development / Francesco Rotondo 4 Cultural Heritage as a Key for the Development of Cultural and Territorial Integrated Plans / Francesco Rotondo 5 Sustainable Development Policies for Minor Deprived Urban Communities and Natural and Cultural Heritage Conservation / Paolo Ventura and Michela Tiboni Part II Lessons Learned from Planning and Management Practices on Safeguarding and Revitalisation of Minor Historic Centres in Eastern Partnerships 6 Lessons Learned from Planning and Management Practices on the Safeguarding and Revitalisation of Minor Historic Centres in Eastern Europe countries / Josefina López Galdeano 7 Characterization of Minor Historic Centers: Quantitative Indexes, and Qualitative Aspects / Claudia Ceppi and Pierangela Loconte Part III Territorial Cultural Systems: A Different Approach to Cultural Heritage 8 Territorial Cultural Systems: Possible Definitions / Francesco Selicato and Claudia Piscitelli 9 An Integrated and Sustainable Approach to the Management of Minor Historic Centres: Territorial Cultural Systems / Josefina López Galdeano 10 Socio-economic Dimension in Managing the Renewal of Ancient Historic Centers / Carmelo M. Torre 11 A Systematic Analysis of Benefits and Costs of Projects for the Valorization of Cultural Heritage / Francesco Tajani and Pierluigi Morano Part IV A New Approach to the Management of Cultural Territorial Systems: Integrated Cultural Territorial Plans 12 Participation and Integrated Cultural Territorial Plans / Claudia Piscitelli 13 Building Local Cultural Landscapes / Paolo Colarossi 14 Implementing and Reviewing Integrated Cultural Territorial Plans / Pierangela Loconte Part V First Experiences in Eastern Europe 15 Armenian Cultural Territorial Systems First Experience / Sarhat Petrosyan and Gruia Bădescu 16 Moldovan Cultural Territorial Systems First Experiences / Gruia Bădescu and Cătălina Preda 17 Romanian Cultural Territorial Systems First Experience / Vera Marin 18 Serbian Cultural Territorial Systems First Experiences / Aleksandra Djukic, Mirjana Roter Blagojevic and Marko Nikolic Part VI Experiences in Italy 19 Safeguarding and Promoting Historical Heritage and Landscape in Italy / Francesco Selicato and Claudia Piscitelli 20 The Actors’ Role in Practices / Claudia Piscitelli and Pierangela Loconte 21 A Survey of Interesting Practices in the Country / Pierangela Loconte 22 Pedestrian Accessibility of Historical Centres: A Key Determinant of Development / Maurizio Tira 23 The Institutional Framework for Planning Instruments and Heritage Protection / Francesco Rotondo Part VII Conclusions: Perspectives for Territorial Cultural Systems 24 Conclusions: Perspectives for Territorial Cultural Systems / Francesco Selicato Index
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  • 17
    facet.materialart.12
    [Cham] : Springer
    Signatur: 9783319292793 (e-book)
    Beschreibung / Inhaltsverzeichnis: This book gives a unique insight into the current knowledge of krill population dynamics including distribution, biomass, production, recruitment, growth and mortality rates. Detailed analysis is provided on food and feeding, reproduction and krill behaviour. The volume provides an overview on the aspects of natural challenges to the species, which involve predation, parasites and the commercial exploitation of the resource and its management. A chapter on genetics shows the results of population subdivision and summarizes recent work on sequencing transcriptomes for studying gene function as part of the physiology of live krill. The focus of Chapter 4 is on physiological functions such as biochemical composition, metabolic activity and growth change with ontogeny and season; and will demonstrate which environmental factors are the main drivers for variability. Further discussed in this chapter are the bottle necks which occur in the annual life cycle of krill, and the mechanisms krill have adapted to cope with severe environmental condition.
    Materialart: 12
    Seiten: 1 Online-Ressource (xxi, 441 Seiten) , Illustrationen, Diagramme
    ISBN: 9783319292793 , 978-3-319-29279-3
    ISSN: 2468-5712 , 2468-5720
    Serie: Advances in polar ecology
    Sprache: Englisch
    Anmerkung: Contents 1 Introducing Antarctic Krill Euphausia superba Dana, 1850 / Volker Siegel 2 Distribution, Biomass and Demography of Antarctic Krill, Euphausia superba / Volker Siegel and Jonathan L. Watkins 3 Age, Growth, Mortality, and Recruitment of Antarctic Krill, Euphausia superba / Christian S. Reiss 4 Physiology of Euphausia superba / Bettina Meyer and Mathias Teschke 5 Feeding and Food Processing in Antarctic Krill (Euphausia superba Dana) / Katrin Schmidt and Angus Atkinson 6 Reproduction and Larval Development in Antarctic Krill (Euphausia superba) / So Kawaguchi 7 Genetics of Antarctic Krill / Simon N. Jarman and Bruce E. Deagle 8 Swarming and Behaviour in Antarctic Krill / Geraint A. Tarling and Sophie Fielding 9 The Importance of Krill Predation in the Southern Ocean / Philip N. Trathan and Simeon L. Hill 10 Parasites and Diseases / Jaime Go´mez-Gutie´rrez and Jose´ Rau´l Morales-A´ vila 11 The Fishery for Antarctic Krill: Its Current Status and Management Regime / Stephen Nicol and Jacqueline Foster Glossary Subject Index Genera and Species Index
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  • 18
    Signatur: PIK N 070-16-89987
    Materialart: Monographie ausleihbar
    Seiten: LXII, 610 Seiten , Illustrationen, Diagramme
    ISBN: 9783319333243
    Serie: Human-environment interactions 5
    Sprache: Englisch
    Standort: A 18 - Bitte bestellen
    Zweigbibliothek: PIK Bibliothek
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  • 19
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/33
    In: CRREL Report, 82-33
    Beschreibung / Inhaltsverzeichnis: Arctic sea ice is freckled with melt ponds during the ablation season; Antarctic sea ice has few, if any. On the basis of a simple surface heat budget, we investigate the meteorological conditions necessary for the onset of surface melting in an attempt to explain these observations. The low relative humidity associated with the relatively dry winds off the continent and an effective radiation parameter smaller than that characteristic of the Arctic are primarily responsible for the absence of melt features in the Antarctic. Together these require a surface-layer air temperature above 0 C before Antarctic sea ice can melt. A ratio of the bulk transfer coefficients C sub H/C sub E less than 1 also contributes to the dissimilarity in Arctic and Antarctic ablation seasons. The effects of wind speed and of the sea-ice roughness on the absolute values of C sub H and C sub E seem to moderate regional differences, but final assessment of this hypothesis awaits better data, especially from the Antarctic.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 16 Seiten , Illustrationen
    Serie: CRREL Report 82-33
    Sprache: Englisch
    Standort: AWI Archiv
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  • 20
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/32
    In: CRREL Report, 82-32
    Beschreibung / Inhaltsverzeichnis: Low-frequency (10 Hz) volcanic earthquakes originate at a wide range of depths and occur before, during, and after magmatic eruptions. The characteristics of these earthquakes suggest that they are not typical tectonic events. Physically analogous processes occur in hydraulic fracturing of rock formations, low-frequency icequakes in temperate glaciers, and autoresonance in hydroelectric power stations. We propose that unsteady fluid flow in volcanic conduits is the common source mechanism of low-frequency volcanic earthquakes (tremor). The fluid dynamic source mechanism explains low-frequency earthquakes of arbitrary duration, magnitude, and depth of origin, as unsteady flow is independent of physical properties of the fluid and conduit. Fluid transients occur in both low-viscosity gases and high-viscosity liquids. A fluid transient analysis can be formulated as generally as is warranted by knowledge of the composition and physical properties of the fluid, material properties, geometry and roughness of the conduit, and boundary conditions. To demonstrate the analytical potential of the fluid dynamic theory, we consider a single-phase fluid, a melt of Mount Hood andeside at 1250 deg C, in which significant pressure and velocity variations occur only in the longitudinal direction.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 15 Seiten , Illustrationen
    Serie: CRREL Report 82-32
    Sprache: Englisch
    Standort: AWI Archiv
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  • 21
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/14
    In: CRREL Report, 82-14
    Beschreibung / Inhaltsverzeichnis: A comparative study was made of design criteria and analytical methods for footings and pile foundations on perma­frost employed in U.S.S.R. Design Code SNiP II-18-76 (1977) and U.S. Army Cold Regions Research and Engineering Laboratory Special Report 80-34 developed in the early 1970's by the U.S. Army Corps of Engineers and published in 1980. The absence of adequate constitutive equations for frozen soils and of rigorous solutions of the boundary prob­lems has made it necessary to incorporate (explicitly or implicitly) various safety factors in the foundation analyses. From the review it is concluded that the principal difference between these practices is in the assessment and application of appropriate values of safety factors, which leads to a substantial discrepancy in the dimensions and cost of footings and pile foundations in permafrost.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 20 Seiten , Illustrationen
    Serie: CRREL Report 82-14
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction U.S.S.R. system of standards U.S.S.R. Design Code SNiP 11-18-76 (1977) subsoils and foundations on permafrost General regulations Classification of soils Basic regulations for foundation design Analysis of subsoils and foundations Design of foundations for special soil conditions, and appendices SR 80-34 (1980) design and construction of foundations in areas of deep seasonal frost and permafrost General information Foundation design Conclusions Literature cited
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  • 22
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/13
    In: CRREL Report, 82-13
    Beschreibung / Inhaltsverzeichnis: Frost heave is analyzed for the common case in which some ice penetrates the soil. In this situation, heave is due to the accumulation of soil-free ice just within the frozen zone, behind a frozen fringe of finite thickness. Heat and mass transport within and across that fringe are crucial processes in the dynamics of heave. This analysis concentrates on activity within the fringe, also connecting that activity to heat and mass flows in the more frozen and unfrozen zones. Each component in a set of governing differential equations is developed from rational physics and thermodynamics, using previous experimental work. It is assumed that the soil ice grows through interconnected interstices; hence it constitutes and can move as a rigid body. When the assumption is translated into mathematical terms, it completes the governing equations. The model resulting from these considerations is a one-dimensional finite element computer program that solves the equations for arbitrary initial and boundary conditions. The model is used to simulate the heave history of a hypothetical soil column frozen unidirectionally and subjected to a surcharge. The results are gratifying in that they predict qualitatively the characteristics of numerous laboratory observations. Some questions about the completeness of the theory remain, and strict verification of the model awaits further experimentation and better parameter identification.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 11 Seiten , Illustrationen
    Serie: CRREL Report 82-13
    Sprache: Englisch
    Standort: AWI Archiv
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  • 23
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/12
    In: CRREL Report, 82-12
    Beschreibung / Inhaltsverzeichnis: From a high-quality set of velocity, temperature, and humidity profiles collected upwind and downwind of a step change in surface roughness, temperature, and moisture, we have calculated upwind and downwind values of the heat fluxes and friction velocity. The surface change is from smooth to rough; upwind, the sensible heat flux is upward and the latent heat flux is zero; downwind, the surface is well-watered so that the latent heat flux is upward while the sensible heat flux is downward. The downwind latent heat flux in this fetch-limited flow obeys NL=0.08 Rx 0.76 where NL is the latent heat Nusselt number and Rx is the fetch Reynolds number, a parameter for characterizing fetch-limited flows. Because this relation is virtually the same as one found to describe the sensible heat and condensate fluxes over arctic leads, we conclude that the Nusselt numbers nondimensionalizing scalar fluxes are the same for a given fetch Reynolds number when boundary conditions are similar.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vii, 18 Seiten , Illustrationen
    Serie: CRREL Report 82-12
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface List of symbols Introduction Upwind: flux gradient method Downwind: integral method ResulIts Energy budget Latent heat flux Surface stress Downwind humidity profiles Discussion Conclusions Literature cited
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  • 24
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/3
    In: CRREL Report, 82-3
    Beschreibung / Inhaltsverzeichnis: The conditions that lead to initial breakup of a solid ice on a river due to rapid water level variations are analyzed. The analysis is based on the theory of beams on an elastic foundation. First cracking is assumed to occur when the bending moment induced in the ice cover by the wave exceeds the flexural strength of the ice cover.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 17 Seiten , Illustrationen
    Serie: CRREL Report 82-3
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Symbols Introduction Purpose of the study Stating the problem Fracturing of the ice cover due to the passage of surge waves Basic assumptions Derivation of the bending moments Determination of the wave characteristics Deflection of the ice Discussion and field observations Summary Literature cited
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  • 25
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/6
    In: CRREL Report, 82-6
    Beschreibung / Inhaltsverzeichnis: The interpretation of continuous radar profiles requires an alternative geophysical means of obtaining ground dielectric information. Ground dielectric properties were measured using wide-angle reflection and refraction (WARR) soundings with a ground-probing radar set that transmits pulses f a few nanoseconds duration. The investigations, carried out over sandy gravel in interior Alaska, provided dielectric data to about a 5-m depth. The WARR soundings were displayed as individual traces allowing interference between separate events and dispersion to be observed, and the soundings were compared with continuous radar and resistivity profiles conducted concurrently to extract the maximum amount of dielectric information. The dielectric constants, derived mainly from the direct ground waves propagating along the surface, ranged from 2.9 to 7.4. Dielectric values interpreted for one site predicted the possibility of a refracted event which may have occurred during one of the soundings.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 11 Seiten , Illustrationen
    Serie: CRREL Report 82-6
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Theory of ground wave propagation from a horizontal electric dipole Equipment and methods Results Site 1 Site 2 Site 3 Summary and concluding remarks Literature cited
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  • 26
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/5
    In: CRREL Report, 82-5
    Beschreibung / Inhaltsverzeichnis: The problem of simultaneous heat and mass transfer in a homogeneous snow layer, with one side kept at its initial temperature and the other side with a step temperature increase, was solved for the case of constant through-flow conditions. An experimentally determined effective thermal conductivity function, i.e. Ke = 0.0014 + 0.58 G (where G is dry mass flow rate of air in g/sq cm-s), was employed in the solution. The computed nondimensional temperature distribution agreed quite well with experimental data taken under pseudo-steady state conditions with the exception of the temperature for the lowest flow rate used in the experiment. The pronounced nonlinearity of the temperature distribution was found to be a strong function of the flow rate. For sinusoidal variation of atmospheric pressure, the responding flow in the snow medium was also found to be sinusoidal. In conjunction with the diurnal temperature change, this variation facilitated the process of repeated sublimation and condensation in alternate directions and thereby produced a surface layer of approximately constant snow density.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 10 Seiten , Illustrationen
    Serie: CRREL Report 82-5
    Sprache: Englisch
    Standort: AWI Archiv
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  • 27
    facet.materialart.12
    [Cham] : Springer
    Signatur: 9783319325101 (e-book)
    Beschreibung / Inhaltsverzeichnis: This book will take an evidence-based approach to current knowledge about biomolecules and their place in our lives, inviting readers to explore how we know what we know, and how current gaps in knowledge may influence the way we approach the information. Biomolecular science is increasingly important in our everyday life, influencing the choices we make about our diet, our health, and our wellness. Often, however, information about biomolecular science is presented as a list of immutable facts, discouraging critical thought. The book will introduce the basic tools of structural biology, supply real-life examples, and encourage critical thought about aspects of biology that are still not fully understood.
    Materialart: 12
    Seiten: 1 Online-Ressource (vii, 182 Seiten) , Illustrationen
    ISBN: 9783319325101 , 978-3-319-32510-1
    Sprache: Englisch
    Anmerkung: Contents 1 The Protein Data Bank 2 Seeing Is Believing: Methods of Structure Solution 3 Visualizing the Invisible World of Molecules 4 The Twists and Turns of DNA 5 The Central Dogma 6 The Secret of Life: The Genetic Code 7 Evolution in Action 8 How Evolution Shapes Proteins 9 The Universe of Protein Folds 10 Order and Chaos in Protein Structure 11 Molecular Electronics 12 Green Energy 13 Peak Performance 14 Cellular Signaling Networks 15 GPCRs Revealed 16 Signaling with Hormones 17 Single-Molecule Chemistry: Enzyme Action and the Transition State 18 Seven Wonders of the World of Enzymes 19 Building Bodies 20 Coloring the Biological World 21 Amazing Antibodies 22 Attack and Defense: Weapons of the Immune System 23 Reconstructing HIV Erratum
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  • 28
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/34
    In: CRREL Report, 82-34
    Beschreibung / Inhaltsverzeichnis: The ice discharge through an opening in an ice control structure was documented to be a function of the floe size, ice type, ice floe conditions and vessel direction. The model data for the average ice discharge per vessel transit scaled to prototype values compared favorably with data taken at the St. Marys River ice control structure (ICS). The model results of the force measurements were also consistent with data taken at the St. Marys ICS. The dynamic loading conditions were independent of vessel direction. The dynamic loading to the structure using 3 types of ice (plastic, natural and urea-doped) showed a considerable difference in their means and standard deviations. The urea-doped ice was evaluated for dynamic loading conditions, and reasonable peak values of 3 to 5 times the mean load at each measuring position were recorded, independent of vessel direction. It appears that synthetic random ice floes may be used in model studies where ice discharge through an opening in a structure needs to be documented. This study shows the synthetic random ice floe discharge to fall reasonably within the values obtained for natural ice discharge for both rafted and non-rafted ice fields above the ICS. However, the question of whether synthetic ice can be used for analyzing force distributions and dynamic force loading criteria cannot be fully answered at this time because the load distributions of the synthetic and natural floes appear to differ.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 68 Seiten , Illustrationen
    Serie: CRREL Report 82-34
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Scope of work Ice discharge from Lake Huron into St. Clair River Water velocity profiles at Port Huron Ice conditions Physical model Basis for selection Description Instrumentation Model ice control structure Open water calibration Open water tests Experimental procedures and techniques Ice cover calibration Ice control structure orientation Analysis of ice discharge due to ship transits Natural ice Synthetic ice Forces on the ice control structure Static measurements Dynamic force measurements Potential additional shear stresses Anticipated ice conditions with ICS Conclusions Literature cited Appendix A. Application of model results Appendix B. Suggested additional studies Appendix C. Derivation of ice discharge
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  • 29
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/43
    In: CRREL Report, 82-43
    Beschreibung / Inhaltsverzeichnis: The radar signatures of ice wedges and wedge-like structures have been investigated for a variety of soil conditions. The radar used for this study emitted short sinusoidal pulses of about 10-ns duration with an approximate center frequency of 150 MHz. Most of the ice wedges existed at depths of about 1 m in a variety of silty and sandy soils with both frozen and thawed active layers. The position of the wedges was usually identified from corresponding surface features. An artificial ice wedge in coarse-grained alluvium was also profiled as well as wedge-like structures of fine silt in a coarse-grained glacial outwash. All wedges and wedge-like structures produced a hyperbolic reflection profile except when an active layer of thawed, saturated silt was present which eliminated returns from the wedges. The peaks of the hyper-bolas were sometimes masked by reflections from the permafrost table or other material interfaces, and multiple hyperbolas occurred at some sites. The dielectric constant of the host medium was often calculated from the linear portions of the hyperbolas and the results were verified by laboratory time domain reflectometry measurements per-formed on field samples. In some cases, hyperbolic profiles originated at several meters depth suggesting that deep ice wedges could be detected in areas of cold permafrost.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 19 Seiten , Illustrationen
    Serie: CRREL Report 82-43
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Background Objectives and procedures Equipment used Radar TDR Definitions Massive ice Results Artificial wedge: Norwich, Vermont Ice wedges in sand: Fish Creek, Alaska Ice wedges: Prudhoe Bay, Alaska Ice wedges under thawed fine-grained soils: North Slope, Alaska Wedge-like soil structures: Ft. Greely, Alaska TDR measurements Summary and concluding remarks Literature cited Appendix A: Brief discussion of dispersion
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  • 30
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/24
    In: CRREL Report, 82-24
    Beschreibung / Inhaltsverzeichnis: Velocity data derived from petroleum industry seismic records from Harrison Bay show that high-velocity material ( or = 2 km/s) interpreted to be ice-bonded permafrost is common. In the eastern part of the bay, the depth to high velocity material increases and velocity decreases in an orderly manner with increasing distance from shore until the layer is no longer apparent. The western part of the bay is less orderly, possibly reflecting a different geological and thermal history. This western part may be an inundated section of the low coastal plain characterized by the region north of Teshekpuk Lake, and could have contained deep thaw lakes, creating low velocity zones. Along some seismic lines, the high-velocity material extends approximately 25 km offshore. Two anomalies have been found which could be associated with rapidly degrading permafrost. One is strong attenuation, which was interpreted as an indication of gas in the shallow deposits. The other is the presence of considerable seismic noise, including identifiable small seismic events. The origin of this noise has not been positively established, and it is proposed that it may indicate that some movement is occurring in the sediments due to thaw.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 65 Seiten , Illustrationen
    Serie: CRREL Report 82-24
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Methods Reading records Refractions Reflections Rayleigh waves Spatial resolution Anomalies Results and discussion Seismic velocity distribution Attenuation Low-level natural seismicity Summary Literature cited Appendix A: Error estimates Appendix B: Velocity profiles Appendix C: Seismic cross sections
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  • 31
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/23
    In: CRREL Report, 82-23
    Beschreibung / Inhaltsverzeichnis: A direct filtration, water treatment pilot plant was operated on the Kenai River at Soldotna, Alaska, during the summer of 1980. The purpose of the pilot plant operations was to determine the feasibility of the direct filtration process for removal of glacial silt. The major criterion used to determine feasibility was production of water containing less than 1.0 NTU of turbidity. For the range of raw water turbidities encountered (22-34 NTU), the pilot plant testing indicated that direct filtration was feasible and could be considered as an alternative to conventional waiter treatment plants containing sedimentation tanks.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 26 Seiten , Illustrationen
    Serie: CRREL Report 82-23
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric Introduction Glacial characteristics Water treatment Materials and methods Experimental design Pilot plant intake Hydrocyclone Chemical addition system Flocculation system Filtration system Pilot plant operations Coagulant chemical preparations Flow measurement Sampling Results and discussion Kenai River w ater quality Evaluation of pilot plant testing Performance of pilot plant elements Physical and chem ical variables Conclusions Recommendations Literature cited
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  • 32
    Signatur: ZSP-201-82/26
    In: CRREL Report, 82-26
    Beschreibung / Inhaltsverzeichnis: The Caribou-Poker Creeks Research Watershed is a small (101.5-sq km) drainage basin located 48 km northwest of Fairbanks, Alaska. Elevations within the watershed range from 210 to 826 m, and approximately 28% of its area is underlain by permafrost. Climatic differences between the watershed and Fairbanks are primarily due to the higher elevation of the watershed. Generally the watershed climatic sites are warmer in winter and cooler in summer than Fairbanks. Within the watershed the greatest temperature contrasts exist in winter, when the valley-bottom sites are beneath the regional air temperature inversion, and the higher sites are above it. From May through September the total precipitation averages 270 mm, 1.47 times that received at Fairbanks. The annual precipitation is about 1.7 times that of Fairbanks. The historical precipitation record at Fairbanks indicates that summer precipitation was below the long-term normal in eight of the eleven years of watershed measurements (1969-1980); no climatic extremes occurred during this period. An analysis of annual streamflow data showed an inconsistency of baseflow recessions from year to year. The runoff-rainfall ratio for individual summer storms averaged 0.35 for Caribou Creek. Comparisons of spot discharge measurements of predominantly permafrost and non-permafrost subwatersheds showed that permafrost-dominated watersheds have a much flashier response to precipitation than non-permafrost watersheds. A comparison of the annual flow distribution of the watershed indicated that Caribou Creek has lower summer and higher winter discharges per unit area than the Chena or Salcha Rivers.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 42 Seiten , Illustrationen
    Serie: CRREL Report 82-26
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Setting Geology and soils Vegetation Climate Air temperature Precipitation Hydrology Annual and monthly runoff Individual storms Baseflow recessions Spatial flow variability Temporal flow variability Summary and conclusions Literature cited Appendix A: Station histories
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  • 33
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    Signatur: ZSP-201-82/27
    In: CRREL Report, 82-27
    Beschreibung / Inhaltsverzeichnis: Recommendations for economical thicknesses for building insulation result from a study of fuel and construction costs of 12 military installations in Alaska. A comparison between the insulation thickness that a building owner might choose today and what he might choose in 20 years indicates a trend for much thicker insulation in the future. An analysis of how much more expensive a building built today with the thickness that would be appropriate 20 years hence indicates only a small penalty in life-cycle costs for the additional insulation. Therefore, a minimum of R-32 walls and R-62 attics is recommended for most of Alaska.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 54 Seiten , Illustrationen
    Serie: CRREL Report 82-27
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Conversion factors Summary Introduction Determining economic thicknesses for insulation Background Analysis method for new construction Analysis method for reinsulating existing construction Sensitivity and longevity of the results Sensitivity Longevity Recommendations Saving money vs. saving energy Energy economics conservation Building energy performance standards Conclusion Literature cited Appendix A: Heating system costs Appendix B: Present worth factors Appendix C: Base case and incremental thermal properties Appendix D: LCC comparison graphs for wall and roof systems Appendix E: Cost penalties for energy conservatism Appendix F: Graphic aid for figuring energy savings thermal improvements
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  • 34
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/30
    In: CRREL Report, 82-30
    Beschreibung / Inhaltsverzeichnis: Equations are developed that can be used to determine the amount of gas present in sea ice from measurements of the bulk ice density, salinity and temperature in the temperature range o f-2 to -30°C. Conversely these relationships can be used to give the density of sea ice as a function of its temperature and salinity, considering both the presence of gas and of solid salts in the ice. Equations are also given that allow the calculation of the gas and brine volumes in the ice at temperatures other than that at which the bulk density was determined.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 13 Seiten , Illustrationen
    Serie: CRREL Report 82-30
    Sprache: Englisch
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  • 35
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/29
    In: CRREL Report, 82-29
    Beschreibung / Inhaltsverzeichnis: Ice grains in a snow cover with a low temperature gradient assume a well-rounded equilibrium form. However, at temperature gradients of 0.1 to 0.2 C/cm (depending somewhat on temperature and snow density), the rounded grains recrystallize into a faceted kinetic growth form. The large temperature gradient must play a decisive role in moving the vapor fast enough to sustain the rapid growth rate associated with the kinetic growth form. Once the large temperature gradient is removed, the grains recrystallize back to the equilibrium form. the recrystallization occurs in either direction without a change in bulk density. The growth of faceted crystals begins at the warmer base of the snow cover where the excess vapor pressure is largest. A transition between the overlying rounded grains moves upward in time. Faceted crystals also grow just below crusts of reduced permeability, where the increased vapor accumulation can sustain the excess vapor pressure neded for kinetic growth. The heat and vapor flows are described using a model based on thermodynamic equilibrium. The temperature distribution is shown to be quasi-linear at steady state in homogeneous snow. The recrystallization of the snow is modeled using the rounded grains as sources and the faceted grains as sinks. In the future this model should be extended to account for different temperatures among the sources and sinks.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 27 Seiten , Illustrationen
    Serie: CRREL Report 82-29
    Sprache: Englisch
    Anmerkung: Contents: Abstract Preface Introduction Vapor flow Temperature profile Crystal growth rates Equilibirum versus kinetic growth forms of snow crystals Discussion Summary Literature cited
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  • 36
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/31
    In: CRREL Report, 82-31
    Beschreibung / Inhaltsverzeichnis: Information on sea ice conditions in the Bering Strait and the icefoot formation around Fairway Rock, located in the strait, is presented. Cross-sectional profiles of Fairway Rock and the relief of the icefoot are given along with theoretical analyses of the possible forces active during icefoot formation. It is shown that the ice cover most likely fails in flexure as opposed to crushing or buckling, as the former requires less force. Field observations reveal that the Fairway Rock icefoot is massive, with ridges up to 15 m high, a seaward face only 20 degrees from vertical, and interior ridge slopes averaging 33 degrees. The icefoot is believed to be grounded and its width ranges from less than 10 to over 100 m.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 44 Seiten , Illustrationen
    Serie: CRREL Report 82-31
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Bering Strait Field reconnaissance Estimation of ice forces on Fairway Rock 1. Creep deformation 2. Crushing failure 3. Flexural failure 4. Forces required to form floating or grounded pressure ridges along therock or to pile ice on the beaches 5. Buckling failure Driving forces Angle of internal friction of sea ice Summary Literature cited Appendix A: April 1982 field observations at Fairway Rock
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  • 37
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/21
    In: CRREL Report, 82-21
    Beschreibung / Inhaltsverzeichnis: The acoustic emission response from fine-grained polycrystalline ice subjected to constant compressive loads was examined. A number of tests were conducted with the nominal stress ranging from 0.8 to 3.67 MPa at a temperature of -5 C. The acoustic emission response was recorded and the data are presented with respect to time and strain. The source of acoustic emissions in ice is considered in terms of the formation of both microfractures and visible fractures that develop without catastrophic failure of the ice. A model to describe the acoustic emission response is developed.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 15 Seiten , Illustrationen
    Serie: CRREL Report 82-21
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Background Experimental procedures Ice specimens Mechanical test equipment Acoustic emission equipment Data recording Acoustic emission sources in ice Acoustic events and visible fracturing Source mechanisms Tests on ice single crystals General acoustic emission response Analysis of data Transient response Steady-state response Amplitude distribution Combined transient and steady-state response in the time domain Discussion Summary Literature cited
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  • 38
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/1
    In: CRREL Report, 82-1
    Beschreibung / Inhaltsverzeichnis: On 27 March 1964 a major earthquake struck Southern Alaska. The city of Anchorage, which contained a large part of Alaska's population, suffered loss of life and destruction of property. The time of the day, the season, and ground conditions were such that loss of life and property was minimized. The frozen ground and the ice on fresh waster bodies responded to the earthquake shocks in a seldom-observable pattern, which was noted and recorded. Changes of sea level and slides into the sea were responsible for waterfront destruction. It is concluded that the main factor that limited structural damage was the frozen state of the ground.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 26 Seiten , Illustrationen
    Serie: CRREL Report 82-1
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Abstract of events Earthquakes and frozen ground The response of freshwater ice sheets to earthquake shock The earthquake disturbance in glaciated mountains Disturbed wildlife Tidal waves Summary Literature cited
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  • 39
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/4
    In: CRREL Report, 82-4
    Beschreibung / Inhaltsverzeichnis: Several proposed methods for treating the momentum flux between drifting sea ice and the underlying ocean are interpreted in terms of simple planetary-boundary-layer (PBL) turbulence theory. The classical two-layer approach, in which the solution for a thin surface layer is matched to an Ekman solution for the outer layer, is used to derive several forms of the drag law. These forms range from linear (where stress is proportional to relative speed), through quadratic (where stress is proportional to relative speed squared), to a Rossby-similarity law like that used to express frictional drag on geostrophic wind in the atmosphere. Only formulations which conform with Rossby-similarity scaling are consistent with free-drift data from the 1975 AIDJEX drift station experiment.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 17 Seiten , Illustrationen
    Serie: CRREL Report 82-4
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Background Hierarchy of drag laws and simple models The momentum equation for the planetary boundary layer Linear eddy viscosity - the constant stress layer Two-layer eddy viscosity PBL scaling A dimensionless two-layer system A dimensionless two-layer system with modified stress Evaluating the drag laws Rossby similarity parameters and buoyancy effects Discussion Literature cited
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  • 40
    facet.materialart.12
    [Cham] : Springer
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    Signatur: 9783319252025 (e-book)
    In: Theory and applications of transport in porous media, Volume 27
    Beschreibung / Inhaltsverzeichnis: This book treats the mechanics of porous materials infiltrated with a fluid (poromechanics), focussing on its linear theory (poroelasticity). Porous materials from inanimate bodies such as sand, soil and rock, living bodies such as plant tissue, animal flesh, or man-made materials can look very different due to their different origins, but as readers will see, the underlying physical principles governing their mechanical behaviors can be the same, making this work relevant not only to engineers but also to scientists across other scientific disciplines. Readers will find discussions of physical phenomena including soil consolidation, land subsidence, slope stability, borehole failure, hydraulic fracturing, water wave and seabed interaction, earthquake aftershock, fluid injection induced seismicity and heat induced pore pressure spalling as well as discussions of seismoelectric and seismoelectromagnetic effects. The work also explores the biomechanics of cartilage, bone and blood vessels. Chapters present theory using an intuitive, phenomenological approach at the bulk continuum level, and a thermodynamics-based variational energy approach at the micromechanical level. The physical mechanisms covered extend from the quasi-static theory of poroelasticity to poroelastodynamics, poroviscoelasticity, porothermoelasticity, and porochemoelasticity. Closed form analytical solutions are derived in details. This book provides an excellent introduction to linear poroelasticity and is especially relevant to those involved in civil engineering, petroleum and reservoir engineering, rock mechanics, hydrology, geophysics, and biomechanics.
    Materialart: 12
    Seiten: 1 Online-Ressource (893 Seiten) , Illustrationen, Diagramme
    ISBN: 9783319252025 (e-book) , 978-3-319-25202-5
    ISSN: 2213-6940 , 0924-6118
    Serie: Theory and applications of transport in porous media Volume 27
    Sprache: Englisch
    Anmerkung: Contents 1 Introduction 1.1 Porous Material 1.2 Physical Mechanism 1.2.1 Drained and Undrained Responses 1.2.2 Time and Length Scale 1.2.3 Skempton Pore Pressure Effect 1.2.4 Effective Stress for Volumetric Deformation 1.2.5 Effective Stress for Pore Collapse 1.2.6 Fluid Storage 1.2.7 Thermoelasticity Analogy 1.2.8 Coupled Versus Uncoupled Diffusion 1.3 Poroelastic Phenomena 1.3.1 Borehole Failure 1.3.2 Mandel-Cryer Effect 1.3.3 Noordbergum Effect 1.3.4 Land Subsidence 1.3.5 Slope Stability and Fault Slippage 1.3.6 Fluid Induced Seismicity 1.3.7 Outburst of Coal 1.3.8 Hydraulic Fracturing 1.3.9 Water Wave and Seabed Interaction 1.3.10 Tidal and Barometric Efficiency 1.3.11 Biomechanics 1.3.12 Poroviscoelasticity and Anelastic Strain Recovery 1.3.13 Porothermoelasticity and Thermal Fracturing 1.3.14 Poroelastodynamics and Seismoelectric Effect 1.3.15 Swelling of Clay and Shale 1.3.16 Nanoporous Material References 2 Constitutive Equation 2.1 Physical Versus Phenomenological Approach 2.2 Stress and Strain of Porous Medium 2.2.1 Stress 2.2.2 Strain 2.3 Poroelastic Constitutive Equation 2.3.1 Isotropic Elastic Material 2.3.2 Isotropic Poroelastic Material 2.3.3 Reciprocal Work Theorem 2.3.4 Stress-Strain Relation 2.3.5 Strain-Stress Relation 2.4 Bulk Material Constant 2.4.1 Drained and Undrained Constant 2.4.2 Effective Stress Coefficient 2.4.3 Pore Pressure Coefficient 2.4.4 Storage Coefficient References 3 Micromechanics 3.1 Micromechanical Analysis 3.1.1 Solid and Pore Volumetric Strain 3.1.2 Fluid Volumetric Strain 3.1.3 Link Among Material Constants 3.2 Ideal Porous Medium 3.3 Effective Modulus 3.3.1 Mackenzie Model 3.3.2 Walsh Model 3.3.3 Budiansky and O’Connell Model 3.3.4 Bounds on Material Constants 3.4 Nonlinear Model 3.4.1 Effective Stress Dependent Pore Compressibility 3.4.2 Compaction Induced Permeability Change 3.5 Laboratory Test 3.5.1 Drained Test 3.5.2 Undrained Test 3.5.3 Unjacketed Test 3.6 Table of Poroelastic Constants References 4 Variational Energy Formulation 4.1 Internal and External Stress and Strain 4.1.1 Porosity 4.1.2 Volume and Surface Averaging of Elastic Material 4.1.3 Volume and Surface Averaging of Porous Material 4.1.4 Linkage Between Internal and External Strains 4.2 Thermodynamic Principles 4.3 Variational Formulation 4.3.1 Virtual Work 4.3.2 Internal Energy 4.3.3 Porosity Equilibrium 4.4 Constitutive Equation 4.4.1 Linear Material Model 4.4.2 Linear Model 4.5 Intrinsic Material Constant 4.5.1 Effective Solid Bulk Modulus 4.5.2 Fundamental Deformation Mode 4.5.3 Microisotropy and Microhomogeneity: Ideal Porous Medium 4.6 Link with Phenomenological Model 4.6.1 Link with Bulk Continuum Model 4.6.2 Link with Micromechanics Model 4.7 Deviation from Ideal Porous Medium 4.8 Limiting Material Properties 4.8.1 Ideal Porous Medium 4.8.2 Granular Material 4.8.3 Soil Mechanics Model: Saturated 4.8.4 Soil Mechanics Model: Nearly Saturated 4.8.5 Highly Compressible Solid 4.8.6 Highly Compressible Fluid 4.9 Material Stability and Energy Diagram 4.10 Semilinear Model 4.10.1 Geometric Nonlinearity 4.10.2 Structural Nonlinearity 4.11 Laboratory Measurement of Intrinsic Constant References 5 Anisotropy 5.1 Anisotropic Constitutive Equation 5.1.1 Elasticity 5.1.2 Poroelastic Stress-Strain Relation 5.1.3 Poroelastic Strain-Stress Relation 5.2 Material Symmetry 5.2.1 Orthotropy 5.2.2 Transverse Isotropy 5.2.3 Isotropy 5.3 Micromechanics 5.4 Ideal Porous Medium 5.5 Example References 6 Governing Equation 6.1 Darcy’s Law 6.1.1 Darcy’s Empirical Law 6.1.2 Homogenization Theory 6.1.3 Intrinsic Permeability and Mobility Coefficient 6.1.4 Irreversible Thermodynamics Process 6.2 Other Physical Laws 6.2.1 Mass Conservation 6.2.2 Force Equilibrium 6.3 Governing Equation 6.3.1 Navier-Cauchy Equation 6.3.2 Diffusion Equation 6.3.3 Compatibility Equation 6.3.4 Harmonic Relation 6.3.5 Orthotropy 6.3.6 Transverse Isotropy 6.4 Degenerated Governing Equation 6.4.1 Drained and Undrained State 6.4.2 Soil Mechanics Model 6.4.3 Irrotational Displacement Field 6.4.4 Uncoupling of Diffusion Equation 6.5 Boundary Value Problem 6.5.1 Existence and Uniqueness 6.5.2 Boundary Condition 6.6 Field Equation 6.6.1 Biot Function 6.6.2 Biot Decomposition 6.6.3 McNamee-Gibson Displacement Function References 7 Analytical Solution 7.1 Review of Early Work 7.2 Uniaxial Strain 7.2.1 Isotropy 7.2.2 Transverse Isotropy 7.3 One-Dimensional Consolidation Problem 7.3.1 Terzaghi’s Consolidation Problem 7.3.2 Loading by Fluid Pressure 7.3.3 Variable Rete Loading 7.3.4 Harmonic Excitation 7.4 Plane Strain 7.4.1 Orthotropy 7.4.2 Isotropy 7.4.3 Volumetric Strain and Rotation Formulation 7.5 Generalized Plane Strain 7.5.1 Definition of Generalized Plane Strain 7.5.2 Pure Shear 7.5.3 Warping 7.5.4 Torsion 7.5.5 Plane Strain 7.5.6 Axial Strain 7.5.7 Pure Bending 7.6 Pure Bending of Plate 7.6.1 Bending of Cantilever Plate 7.6.2 Buckling of Axially Loaded Plate 7.7 Mandel Problem 7.8 Water Wave Over Seabed 7.9 Spherical Symmetry 7.10 Cryer Problem 7.11 Spherical Cavity 7.11.1 Pressurized Cavity 7.11.2 Excavated Cavity 7.11.3 Pore Pressure Meter Problem 7.12 Axial Symmetry 7.13 Cylinder Problem 7.13.1 Solid Cylinder 7.13.2 Hollow Cylinder 7.14 Borehole Problem 7.14.1 Plane Strain Borehole Problem 7.14.2 Inclined Borehole Problem 7.15 Borehole and Cylinder Application Problems 7.15.1 Retrieval of Cylindrical Core 7.15.2 Excavated Borehole 7.15.3 Fluid Extraction and Injection 7.15.4 Borehole Breakdown Pressure 7.15.5 Borehole Stability Analysis 7.16 Moving Load on Half Plane 7.17 Plane Strain Half Space and Layered Problem 7.17.1 General Solution for Layered Problem 7.17.2 Plane Strain Half Space Problem 7.18 Axial Symmetry Half Space Problem References 8 Fundamental Solution and Integral Equation 8.1 Reciprocal Theorem 8.1.1 Green’s Second Identity 8.1.2 Betti-Maxwell Reciprocal Theorem 8.1.3 Reciprocal Theorem of Poroelasticity 8.2 Somigliana Integral Equation 8.2.1 Green’s Third Identity 8.2.2 Elasticity 8.2.3 Poroelasticity 8.3 Fredholm Integral Equation 8.3.1 Potential Problem 8.3.2 Elasticity 8.3.3 Poroelasticity 8.4 Stress Discontinuity Method 8.5 Displacement Discontinuity Method 8.6 Dislocation Method 8.7 Galerkin Integral Equation 8.8 Fundamental Solution 8.8.1 Elementary Fundamental Solution 8.8.2 Elasticity Fundamental Solution 8.9 Poroelasticity Fundamental Solution 8.10 Fluid Source 8.10.1 Continuous Source 8.10.2 Instantaneous Source 8.11 Fluid Dipole 8.11.1 Continuous Dipole 8.11.2 Instantaneous Dipole 8.12 Fluid Dilatation 8.12.1 Continuous Fluid Dilatation 8.12.2 Instantaneous Fluid Dilatation 8.13 Fluid Force 8.13.1 Continuous Fluid Force 8.13.2 Instantaneous Fluid Force 8.14 Fluid Dodecapole 8.15 Total Force 8.15.1 Continuous Total Force 8.15.2 Instantaneous Total Force 8.16 Solid Quadrupole and Hexapole 8.17 Solid Center of Dilatation 8.18 Displacement Discontinuity 8.19 Edge Dislocation 8.20 Fundamental Solution Relation Based on Reciprocity References 9 Poroelastodynamics 9.1 Dynamic Equilibrium Equation 9.2 Dynamic Permeability 9.3 Governing Equation 9.4 Wave Propagation 9.4.1 Elastic Wave 9.4.2 Poroelastic Wave 9.5 Phase Velocity and Attenuation 9.5.1 Phase Velocity 9.5.2 Attenuation 9.5.3 Extended Biot Models 9.6 One-Dimensional Wave Problem 9.6.1 Half Space 9.6.2 Finite Thickness Layer 9.7 Thermoelasticity Analogy 9.8 Poroelastodynamics Fundamental Solution 9.8.1 Elastodynamics Fundamental Solution 9.8.2 Helmholtz Decomposition 9.8.3 Three-Dimensional Point Force Solution 9.8.4 Three-Dimensional Fluid Source Solution 9.8.5 Two-Dimensional Fundamental Solution 9.9 Integral Equation Representation 9.10 Plane Wave Reflection and Refraction 9.10.1 Plane Strain Wave Solution 9.10.2 Reflection on Free Surface—Non-Dissipative Medium 9.10.3 Reflection on Free Surface—Dissipative Medium 9.10.4 Impermeable Surface 9.10.5 Fluid and Porous Medium Interface References 10 Poroviscoelasticity 10.1 Viscoelasticity 10.1.1 Spring and Dashpot Model 10.1.2 Correspondence Principle
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  • 41
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/41
    In: CRREL Report, 82-41
    Beschreibung / Inhaltsverzeichnis: Many of the important factors influencing the choice of appropriate aquifer test procedures are presented. The concepts of bias, accuracy and spatial variabil­ity are explained. The definitions of a number of aquifer parameters are devel­oped from basic principles demonstrating the underlying assumptions and limita­tions. The parameters considered are: piezometric head, hydraulic conductiv­ity/intrinsic permeability, flow direction, specific discharge magnitude, transmissivity, volumetric flow rate, total porosity, effective porosity, aver­age linear velocity, storage coefficient, specific yield, dispersion coefficient-aquifer dispersivity. For each parameter several techniques are described, evaluated and ranked in terms of perceived potential accuracy, simplicity and value to contaminant transport studies. It must be stressed, however, that the evaluations are based principally upon theoretical grounds, and not upon actual conduct of the described procedures.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 111 Seiten , Illustrationen
    Serie: CRREL Report 82-41
    Sprache: Englisch
    Anmerkung: CONTENTS Abstrac Preface Introduction Purpose Scope Concept of accuracy Test selection Definition of parameters Piezometric head Use of piezometers Hydraulic conductivity Flow direction Specific discharge magnitude Transmissivity Volumetric flow rate Porosity Average linear velocity Storage coefficient-specific yield Aquifer dispersivity Parameter estimation techniques Piezometric head Hydraulic conductivity Direction and magnitude of specific discharge vector Transmissivity Volumetric flow rate Total porosity Average linear velocity Storage coefficient Specific yield Effective porosity Aquifer dispersivity-dispersion coefficients Conclusions Literature cited
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  • 42
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/40
    In: CRREL Report, 82-40
    Beschreibung / Inhaltsverzeichnis: The use of explosives to break floating ice sheets is described, and test data are used to develop design curves that predict explosives effects as ice thickness, charge size, and charge depth vary. Application of the curves to practical problems is illustrated by numerical examples. The general features of underwater explosions are reviewed and related to ice blasting. Quasi-static plate theory is considered, and is judged to be inapplicable to explosive cratering of ice plates. The specific energy for optimized ice blasting is found to compare quite favorably with the specific energy of icebreaking ships. All available field data for ice blasting are tabulated in appendices, together with details of the re­gression analyses from which the design curves are generated.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 68 Seiten , Illustrationen
    Serie: CRREL Report 82-40
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction General behavior of underwater explosions Regression analysis for ice-blasting data General features of the regression curves Use of the regression curves as design curves for ice blasting Row charges and pattern charges Response of floating ice sheets to underwater explosions Specific energy and “powder factor” Summary and conclusions Literature cited Appendix A: Basic data on ice blasting Appendix B: Scaled input data Appendix C: Initial regression analysis using complete polynomial Appendix D: Regression analysis with two coefficients of the original poly­nomial deleted
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  • 43
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/42
    In: CRREL Report, 82-42
    Beschreibung / Inhaltsverzeichnis: A high-resolution impulse radar profiling system was evaluated for 1) detecting the existence of sea ice which coring has revealed to exist on the bottom of the Ross Ice Shelf at Site J-9, 2) detecting the preferred horizontal c-axis azi-muthal direction of the sea ice crystals, using the voltage amplitude of the radar reflection from the sea ice bottom, and 3) determining the direction of the currents under an Antarctic ice shelf. A field program was conducted consisting of a surface radar survey on the Ross Ice Shelf at Site J-9 and surface and airborne radar profiling on the McMurdo Ice Shelf. The CRREL impulse radar system, operating at a center frequency of either 80 MHz or 20 MHz, was unable to detect the shelf bottom at Site J-9, which drilling revealed to be 416 m below the snow surface. The radar system was used to profile the McMurdo Ice Shelf both from the snow surface and from the air; a shelf thickness of about 275 m was easily detected. Theoretical considerations indicate that the bulk conductivity of the ice shelf at Site J1-9 was higher than originally anticipated, and this limited the radar sounding depth to about 405 m when operating at a frequency of 20 MHz.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 19 Seiten , Illustrationen
    Serie: CRREL Report 82-42
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Introduction Profiling system Theoretical considerations Field program Discussion Literature cited
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  • 44
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/39
    In: CRREL Report, 82-39
    Beschreibung / Inhaltsverzeichnis: Observations of a 4.4-m-high brine step in the McMurdo Ice Shelf, Antarctica, show that it has migrated about 1.2 km in 4 years. The present brine wave is overriding an older brine-soaked layer. This migration is proof of the dynamic nature of the step, which is the leading edge of a brine wave that originated at the shelf edge after a major break-out of the McMurdo Ice Shelf. The inland boundary of brine penetration is characterized by a series of descending steps that are believed to represent terminal positions of separate intrusions of brine of similar origin. The inland boundary of brine percolation is probably controlled largely by the depth at which brine encounters the firn/ ice transition (43 m). However, this boundary is not fixed by permeability considerations alone, since measurable movement of brine is still occurring at the inland boundary. Freeze-fractionation of the seawater as it migrates throught the ice shelf preferentially precipitates virtually all sodium sulfate, and concomitant removal of water by freezing in the pore spaces of the infiltrated firm produces residual brines approximately six times more concentrated than the original seawater.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 35 Seiten , Illustrationen
    Serie: CRREL Report 82-39
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Objectives Analytical techniques Radio echo profiling Core drilling Results and discussion Brine infiltration survey Brine layer steps Brine infiltration characteristics Brine infiltration mechanisms at inland boundary Confirmation of brine depths by drilling Density and temperature profiles Ice shelf freeboard Brine upwelling Brine chemistry Conclusions Literature cited
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  • 45
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/38
    In: CRREL Report, 82-38
    Beschreibung / Inhaltsverzeichnis: Extreme cold causes heavy buildup of frost, ice and condensation on many windows. It also increases the incentive for improving the airtightness of windows against heat loss. Our study shows that tightening specifications for Alaskan windows to permit only 30% of the air leakage allowed by current American airtightness standards is economically attractive. We also recommend triple glazing in much of Alaska to avoid window icing in homes and barracks. We base our conclusions on a two-year field study of Alaskan military bases that included recording humidity and temperature data, observing moisture accumulation on windows and measuring airtightness with a fan pressurization device.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 26 Seiten , Illustrationen
    Serie: CRREL Report 82-38
    Sprache: Englisch
    Anmerkung: Contents Abstract Preface Nomenclature Introduction Previous work in cold weather window performance Investigation Data acquisition and analysis Modeling the window thermal regime Moisture and ice observations Airtightness testing and analysis Annual heat loss from air leakage Results and conclusions Moisture on windows Airtightness Airtightness economics Recommendations for windows in extreme cold Airtightness Multiple glazing Literature cited Appendix A: Moisture levels and airtightness Appendix B: Dewpoint data Appendix C: Sample observations of icing
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  • 46
    Signatur: ZSP-201-82/37
    In: CRREL Report, 82-37
    Beschreibung / Inhaltsverzeichnis: This report presents a Landsat-derived land cover map of the northwest portion of the Arctic National Wildlife Refuge, Alaska. The report is divided into two parts. The first is devoted to the land cover map with detailed descriptions of the mapping methods and legend. The second part is a description of the study area. The classification system used for the maps is an improvement over existing methods of describing tundra vegetation. It is a comprehensive method of nomenclature that consistently applies the same criteria for all vegetation units. It is applicable for large- and small-scale mapping and is suitable for describing vegetation complexes, which are common in the patterned-ground terrain of the Alaskan Arctic. The system is applicable to Landsat-derived land cover classifications. The description of the study area focuses on five primary terrain types: flat thaw-lake plains, hilly coastal plains, foothills, mountainous terrain, and river flood plains. Topography, landforms, soils and vegetation are described for each terrain type. The report also contains area summaries for the Landsat-derived map categories. The area summaries are generated for the five terrain types and for the 89 townships within the study areas. Two land cover maps at 1:250,000 are included.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 68 Seiten , Illustrationen, 2 Karten
    Serie: CRREL Report 82-37
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Foreword Introduction A land cover map of the ANWR study area Legend development Mapping method Results Discussion Description of the ANWR study area General description Description of specific terrain types Conclusions Literature cited Appendix A: Descriptions of Landsat land cover categories for ANWR Appendix B: Area summaries Appendix C: Aproximate equivalent units in several systems of land cover, wetland and vegetation classifications used in northern Alaska Appendix D: Soil taxonomy Appendix E: Summary of principal Landsat land cover categories within the terrain types of the ANWR study area
    Standort: AWI Archiv
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  • 47
    Signatur: 9783319400006 (e-book)
    Beschreibung / Inhaltsverzeichnis: This book presents isotope data reflecting changes in temperature derived from core samples in South America. Marine Isotope Stage (MIS) is examined in detail with respect to Stage 3. With over 20 chapters, this detailed treatise discusses high climatic variability, paleoclimatic events, Dansgaard-Oeschger cycles, continental vertebrates, sea level changes, vegetation and climate changes based on pollen records, and the non-Amazon landscape and fauna from 65 to 20 ka B.P. The book also looks at the earth’s magnetic field and climate change during MIS 3 and MIS 5 and presents a comparison between both stages with respect to marine deposits in Uruguay. With case studies drawn from Brazil, Argentina and Uruguay this book presents research from the some of the worlds experts in this field.
    Materialart: 12
    Seiten: 1 Online-Ressource (viii, 354 Seiten) , Illustrationen
    ISBN: 9783319400006 , 978-3-319-40000-6
    ISSN: 2197-9596 , 2197-960X
    Serie: Springer Earth System Sciences
    Sprache: Englisch
    Anmerkung: Contents Introduction / Germán Mariano Gasparini, Jorge Rabassa, Cecilia Deschamps and Eduardo Pedro Tonni The Heinrich and Dansgaard–Oeschger Climatic Events During Marine Isotopic Stage 3 / Jorge Rabassa and Juan Federico Ponce On the Origin of the Dansgaard–Oeschger Events and Its Time Variability / Silvia Duhau and Cornelis de Jager The Influence of the Geomagnetic Field in Climate Changes / María Julia Orgeira, Ana María Sinito and Rosa Hilda Compagnucci Abrupt Climate Changes During the Marine Isotope Stage 3 (MIS 3) / Eduardo Andrés Agosta and Rosa Hilda Compagnucci Active Deformation, Uplift and Subsidence in Southern South America Throughout the Quaternary: A General Review About Their Development and Mechanisms / Andrés Folguera, Guido Gianni, Lucía Sagripanti, Emilio Rojas Vera, Bruno Colavitto, Darío Orts and Víctor Alberto Ramos The Marine Isotopic Stage 3 (MIS 3) in Valleys of the Undulated Pampa, Buenos Aires Province, Argentina / Adriana María Blasi, Carola Castiñeira Latorre, Gabriela Catalina Cusminsky and Ana Paula Carignano Sea Level Changes During Marine Isotopic Stage 3 (MIS 3) in Argentina / Federico Ignacio Isla and Enrique Jorge Schnack Paleogeographic Evolution of the Atlantic Coast of South America During Marine Isotope Stage 3 (MIS 3) / Juan Federico Ponce and Jorge Rabassa The Continental Record of Marine Isotope Stage 3 (MIS 3; ~60–25 ka) in Central Argentina: Evidence from Fluvial and Aeolian Sequences / Marcelo Zárate, Adriana Mehl and Alfonsina Tripaldi Marine Isotope Stage 3 (MIS 3) and Continental Beds from Northern Uruguay (Sopas Formation): Paleontology, Chronology, and Climate / Martín Ubilla, Andrea Corona, Andrés Rinderknecht, Daniel Perea and Mariano Verde The Brazilian Intertropical Fauna from 60 to About 10 ka B.P.: Taxonomy, Dating, Diet, and Paleoenvironments / Mário André Trinidade Dantas and Mario Alberto Cozzuol Continental Vertebrates During the Marine Isotope Stage 3 (MIS 3) in Argentina / Germán Mariano Gasparini, Esteban Soibelzon, Cecilia Deschamps, Analía Francia, Elisa Beilinson, Leopoldo Héctor Soibelzon and Eduardo Pedro Tonni Marine Isotope Stage 3 (MIS 3) Versus Marine Isotope Stage 5 (MIS 5) Fossiliferous Marine Deposits from Uruguay / Alejandra Rojas and Sergio Martínez Vegetation and Climate in Southern South America during Marine Isotope Stage 3 (MIS 3): an Overview of Existing Terrestrial Pollen Records / Ana María Borromei and Lorena Laura Musotto Response of Diatoms to Late Quaternary Climate Changes / Marcela Alcira Espinosa Silicophytolith Studies in South America and Argentina: Scope and Limitations for Paleoenvironmental Reconstruction of the Marine Isotope Stage 3 (MIS3) / Margarita Osterrieth, María Fernanda Alvarez, Mariana Fernández Honaine and Georgina Erra Index
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  • 48
    Signatur: 9783319249452 (e-book)
    Beschreibung / Inhaltsverzeichnis: This book covers the state-of-the-art of microalgae physiology and biochemistry (and the several –omics). It serves as a key reference work for those working with microalgae, whether in the lab, the field, or for commercial applications. It is aimed at new entrants into the field (i.e. PhD students) as well as experienced practitioners. It has been over 40 years since the publication of a book on algal physiology. Apart from reviews and chapters no other comprehensive book on this topic has been published. Research on microalgae has expanded enormously since then, as has the commercial exploitation of microalgae. This volume thoroughly deals with the most critical physiological and biochemical processes governing algal growth and production.
    Materialart: 12
    Seiten: 1 Online-Ressource (x, 681 Seiten) , Illustrationen, Diagramme
    ISBN: 9783319249452 , 978-3-319-24945-2
    ISSN: 2543-0599 , 2543-0602
    Serie: Developments in applied phycology 6
    Sprache: Englisch
    Anmerkung: Contents Part I The Algae Cell The Cell Cycle of Microalgae / Vilém Zachleder, Kateřina Bišová, and Milada Vítová Biosynthesis of the Cell Walls of the Algae / David S. Domozych Part II The Fundamental Physiological Processes Photosynthesis and Light Harvesting in Algae / Anthony W. Larkum Carbon Acquisition by Microalgae / John Beardall and John A. Raven Fundamentals and Recent Advances in Hydrogen Production and Nitrogen Fixation in Cyanobacteria / Namita Khanna, Patrícia Raleiras, and Peter Lindblad Dark Respiration and Organic Carbon Loss / John A. Raven and John Beardall Part III Nutrients and Their Acquisition Combined Nitrogen / John A. Raven and Mario Giordano Nutrients and Their Acquisition: Phosphorus Physiology in Microalgae / Sonya T. Dyhrman Sulphur and Algae: Metabolism, Ecology and Evolution / Mario Giordano and Laura Prioretti Micronutrients / Antonietta Quigg Iron / Adrian Marchetti and Maria T. Maldonado Selenium in Algae / Hiroya Araie and Yoshihiro Shiraiwa Silicification in the Microalgae / Zoe V. Finkel Calcification / Alison R. Taylor and Colin Brownlee Part IV Algae Interactions with Environment Chemically-Mediated Interactions in Microalgae / Michael A. Borowitzka Coping with High and Variable Salinity: Molecular Aspects of Compatible Solute Accumulation / Martin Hagemann Effects of Global Change, Including UV and UV Screening Compounds / Richa, Rajeshwar P. Sinha, and Donat-P. Häder Part V Secondary Metabolites Lipid Metabolism in Microalgae / Inna Khozin-Goldberg Sterols in Microalgae / John K. Volkman Carotenoids / Einar Skarstad Egeland Exocellular Polysaccharides in Microalgae and Cyanobacteria: Chemical Features, Role and Enzymes and Genes Involved in Their Biosynthesis / Federico Rossi and Roberto De Philippis Algae Genome-Scale Reconstruction, Modelling and Applications / Cristiana G.O. Dal’Molin and Lars K. Nielsen Part VI Applications Algal Physiology and Large-Scale Outdoor Cultures of Microalgae / Michael A. Borowitzka Part VII Systematics and Taxonomy Systematics, Taxonomy and Species Names: Do They Matter? / Michael A. Borowitzka
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  • 49
    facet.materialart.12
    [Cham] : Springer
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    Signatur: 9783319392646 (e-book)
    In: Modern approaches in solid earth sciences, volume 12
    Beschreibung / Inhaltsverzeichnis: This book provides a detailed overview of the operational principles of modern mining geology, which are presented as a good mix of theory and practice, allowing use by a broad range of specialists, from students to lecturers and experienced geologists. The book includes comprehensive descriptions of mining geology techniques, including conventional methods and new approaches. The attributes presented in the book can be used as a reference and as a guide by mining industry specialists developing mining projects and for optimizing mining geology procedures. Applications of the methods are explained using case studies and are facilitated by the computer scripts added to the book as Electronic Supplementary Material.
    Materialart: 12
    Seiten: 1 Online-Ressource (xx, 448 Seiten) , Illustrationen, Diagramme
    ISBN: 9783319392646 , 978-3-319-39264-6
    ISSN: 1876-1682 , 1876-1690
    Serie: Modern approaches in solid earth sciences volume 12
    Sprache: Englisch
    Anmerkung: Contents 1 Introduction References Part I Mine Design, Mine Mapping and Sampling 2 Mining Methods 2.1 Open Pit Mines 2.2 Underground Mines 2.2.1 Underground Selective Mining Methods 2.2.2 Underground Bulk Mining Methods 2.2.3 Mining of the Gently Dipping Ore Bodies 2.3 Unconventional Mining 2.3.1 In situ Leach (ISL) Technique 2.3.2 Dredging of the Mineral Sands References 3 Mine Mapping 3.1 Mine Mapping Principles 3.2 Mapping Open Pit Mines 3.3 Mapping of Underground Mines 3.4 Mapping Using Digital Photogrammetry and Laser Technologies 3.4.1 Mapping Mining Faces Using Photogrammetry 3.4.2 Remote Mapping of the Mines Using Laser 3.5 Optimisation of the Mine Mapping Procedures References 4 Drilling Techniques and Drill Holes Logging 4.1 Drilling Methods 4.2 Diamond Core Drilling 4.2.1 Core Quality and Representativeness 4.2.2 Orientated Core 4.2.3 Logging Diamond Core Holes 4.2.4 Sampling Diamond Core 4.3 Open Hole Percussion Drilling 4.3.1 Sampling Blastholes for Grade Control Purpose in the Open Pits 4.3.2 Use of ‘Jumbo’ Drilling for Delineation of Underground Stopes 4.4 Reverse Circulation (RC) Percussion Drilling 4.4.1 Logging RC Holes 4.4.2 Sampling RC Holes 4.5 Sonic Drilling Technologies 4.5.1 Strength and Weakness of the Sonic Drilling 4.5.2 Logging and Sampling Sonic Drill Holes 4.6 Auger Drilling 4.7 Rotary Drilling Using Tricone Bit References 5 Sampling of the Mine Workings 5.1 Sampling Rock Faces in the Underground Mines 5.1.1 Channel Sampling 5.1.2 Rock Chip Sampling 5.2 Sampling of the Broken Ore 5.3 Trenching and Winzing References 6 Geotechnical Logging and Mapping 6.1 Geotechnical Logging of the Drill Core 6.1.1 Drilling Parameters and Core Recovery 6.1.2 Rock Weathering 6.1.3 Rock Strength 6.1.4 Rock Quality Designation Index (RQD) 6.1.5 Natural Breaks 6.2 Geotechnical Mapping 6.3 Geotechnical Applications of Rock Mass Classification Schemes References 7 Dry Bulk Density (DBD) of Rocks 7.1 Types of the Rock Densities Used in the Mining Industry 7.2 Dry Bulk Density Measurement Techniques 7.2.1 Competent Non-porous Rocks 7.2.2 Porous and Weathered Rocks 7.2.3 Non-consolidated Sediments 7.3 Spatial Distribution of the Rock Density Measurements References 8 Data Points Location (Surveying) 8.1 Surface Points Location 8.2 Down-Hole Survey Reference Part II Sampling Errors 9 Introduction to the Theory of Sampling 9.1 Types of Sampling Errors 9.2 Fundamental Sampling Error 9.2.1 Theoretical Background 9.2.2 Experimental Calibration of the Sampling 9.2.3 Sampling Nomogram 9.3 Grouping – Segregation Error 9.4 Errors Related to the Sampling Practices 9.5 Instrumental Errors References 10 Quality Control and Assurance (QAQC) 10.1 Accuracy Control 10.1.1 Statistical Tests for Assessing Performance of the Standard Samples 10.1.2 Statistical Tests for Assessing the Data Bias Using the Duplicate Samples 10.1.3 Diagnostic Diagram: Pattern Recognition Method 10.2 Precision Control 10.2.1 Matching Pairs of Data 10.2.2 Processing and Interpretation of Duplicate Samples 10.3 Comparative Analysis of the Statistical Estimation Methods 10.4 Guidelines for Optimisation of the Sampling Programmes 10.4.1 Planning and Implementation of the Sampling Programmes 10.4.2 Frequency of Inserting QAQC Material to Assay Batches 10.4.3 Distribution of the Reference Materials 10.4.4 Distribution of the Duplicate Samples References 11 Twin Holes 11.1 Method Overview 11.1.1 Objectives of the Twinned Holes Study 11.1.2 Statistical Treatment of the Results 11.1.3 Distance Between Twinned Holes 11.1.4 Drilling Quality and Quantity 11.1.5 Comparison of Studied Variables 11.1.6 Practice of Drilling Twinned Holes for Mining Geology Applications 11.2 Case Studies 11.2.1 Gold Deposits: Confirmation of High-Grade Intersections 11.2.2 Twin Holes Studies in Iron Ore Deposits 11.2.3 Mineral Sands Deposits: Validation of Historic Drilling 11.2.4 Bauxites: Use of Twin Holes as a Routine Control of Drilling Quality References 12 Database 12.1 Construction of the Database 12.2 Data Entry 12.2.1 Electronic Data Transfer 12.2.2 Keyboard Data Entry 12.2.3 Special Values 12.3 Management of the Data Flow 12.4 Database Safety and Security References Part III Mineral Resources 13 Data Preparation 13.1 Data Compositing 13.1.1 Data Coding 13.1.2 Compositing Algorithms 13.1.3 Choice of the Optimal Compositing Intervals 13.1.4 Validating of the Composited Assays 13.2 High Grade Cut-Off References 14 Geological Constraints of Mineralisation 14.1 Introduction to Wireframing 14.2 Characterisation of the Mineralisation Contacts 14.2.1 Contact Profile 14.2.2 Determining of the Cut-Off Value for Constraining Mineralisation 14.2.3 Contact Topography 14.2.4 Uncertainty of the Contacts 14.3 Geometry and Internal Structure of the Mineralised Domains 14.3.1 Unfolding References 15 Exploratory Data Analysis 15.1 Objective of the EDA 15.2 Overview of the EDA Techniques 15.2.1 Spider Diagram 15.2.2 Data Declustering 15.2.3 Q-Q Plots 15.2.4 Box-and-Whisker Plot (Box Plot) 15.3 Grouping and Analysis of the Data 15.3.1 Data Types 15.3.2 Data Generations 15.3.3 Grouping Samples by Geological Characteristics 15.4 Statistical Analysis of the Resource Domains References 16 Resource Estimation Methods 16.1 Polygonal Method 16.2 Estimation by Triangulation 16.3 Cross-Sectional Method 16.3.1 Extrapolation of the Cross-Sections 16.3.2 Interpolation Between Cross-Sections 16.4 Estimation by Panels 16.5 Inverse Distance Weighting Method References Part IV Applied Mining Geostatistics 17 Introduction to Geostatistics 17.1 Regionalised Variable and Random Function 17.2 Stationarity and Intrinsic Hypothesis References 18 Variography 18.1 Quantitative Analysis of the Spatial Continuity 18.2 Intuitive Look at Variogram 18.3 Geostatistical Definition of Variogram 18.4 Directional, Omnidirectional and Average Variograms 18.5 Properties of the Variograms 18.5.1 Behaviour Near Origin 18.5.2 Anisotropy 18.6 Analysis of the Data Continuity Using a Variogram Map 18.7 Presence of Drift 18.8 Proportional Effect 18.9 Variogram Sill and the Sample Variance 18.10 Impact of the Different Support 18.11 Variogram Models 18.11.1 Common Variogram Models 18.11.2 Modelling Geometric Anisotropy 18.11.3 Nested Structures 18.11.4 Modelling Zonal Anisotropy 18.12 Troublesome Variograms 18.12.1 Hole Effect 18.12.2 Saw-Tooth Shaped and Erratic Variograms 18.13 Alternative Measures of a Spatial Continuity 18.13.1 Variograms of the Gaussian Transformed Values 18.13.2 Relative (Normalised) Variograms 18.13.3 Different Structural Tools 18.14 Indicator Variograms 18.15 Variograms in the Multivariate Environment 18.15.1 Multivariate Geostatistical Functions 18.15.2 Linear Model of Coregionalisation References 19 Methods of the Linear Geostatistics (Kriging) 19.1 Geostatistical Resource Estimation 19.2 Kriging System 19.2.1 Ordinary Kriging 19.2.2 Simple Kriging 19.2.3 Simple Versus Ordinary Kriging 19.3 Properties of Kriging 19.3.1 Exactitude Property of Kriging 19.3.2 Negative Kriging Weights and Screening Effect 19.3.3 Smoothing Effect 19.3.4 Kriging Variance 19.3.5 Conditional Bias 19.4 Block Kriging 19.4.1 Blocks and Point Estimates 19.4.2 Kriging of the Small Blocks References 20 Multivariate Geostatistics 20.1 Theoretical Background of Multivariate Geostatistics 20.1.1 Ordinary Co-kriging 20.1.2 Collocated Co-kriging 20.1.3 Properties of the Co-kriging 20.2 Kriging with External Drift References 21 Multiple Indicator Kriging 21.1 Methodology of the Multiple Indicator Kriging 21.2 Practical Notes on the Indicators Post-Processing References 22 Estimation of the Recoverable Resources 22.1 Change of Support Concept 22.1.1 Dispersion Variance 22.1.2 Volume Variance Relations 22.1.3 Conditions for Change-of-Support Models 22.2 Global Change of Support Methods 22.2.1 Affine Correction 22.2.2 Discrete Gaussian Change of Support 22.3 Local Change of Support Methods 22.3.1 Uniform Conditioning 22.3.2 Localised Uniform Conditioning 22.3.3 Application of the LUC
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  • 50
    Signatur: 9783319241128 (e-books)
    Beschreibung / Inhaltsverzeichnis: This report examines the scientific basis for the use of remotely sensed data, particularly Normalized Difference Vegetation Index (NDVI), primarily for the assessment of land degradation at different scales and for a range of applications, including resilience of agro-ecosystems. Evidence is drawn from a wide range of investigations, primarily from the scientific peer-reviewed literature but also non-journal sources. The literature review has been corroborated by interviews with leading specialists in the field. The report reviews the use of NDVI for a range of themes related to land degradation, including land cover change, drought monitoring and early warning systems, desertification processes, greening trends, soil erosion and salinization, vegetation burning and recovery after fire, biodiversity loss, and soil carbon. This SpringerBrief also discusses the limits of the use of NDVI for land degradation assessment and potential for future directions of use. A substantial body of peer-reviewed research lends unequivocal support for the use of coarse-resolution time series of NDVI data for studying vegetation dynamics at global, continental and sub-continental levels. There is compelling evidence that these data are highly correlated with biophysically meaningful vegetation characteristics such as photosynthetic capacity and primary production that are closely related to land degradation and to agroecosystem resilience.
    Materialart: 12
    Seiten: 1 Online-Ressource (xx, 110 Seiten) , Illustrationen
    ISBN: 9783319241128 , 978-3-319-24112-8
    ISSN: 2191-5547 , 2191-5555
    Serie: SpringerBriefs in environmental science
    Sprache: Englisch
    Anmerkung: Contents Introduction 1.1 Introduction 1.2 Land Degradation in the UNCCD and GEF 1.3 Concepts, Processes, and Scales of Land Degradation 1.4 Assessment of Resilience of Agroecosystems 2 The Potential for Assessment of Land Degradation by Remote Sensing 2.1 Normalized Difference Vegetation Index 2.2 Remote Sensing Features That Characterize NDVI- Based Assessments of Land Degradation 2.3 Other Vegetation Indices Closely Related to NDVI 2.3.1 Indices Closely Related to NDVI 2.3.2 Comparing NDVI to EVI 3 Applications of NDVI for Land Degradation Assessment 3.1 Land-Use and Land-Cover Change 3.2 Drought and Drought Early Warning 3.3 Desertification 3.4 Soil Erosion 3.5 Soil Salinization 3.6 Vegetation Burning 3.7 Soil Organic Carbon (SOC) 3.8 Biodiversity Monitoring and Conservation 3.9 Monitoring Ecosystem Resilience 4 Limits to the Use of NDVI in Land Degradation Assessment 5 Key Issues in the Use of NDVI for Land Degradation Assessment 5.1 NDVI, NPP, and Land Degradation 5.2 NDVI, RUE, and Land Degradation 5.3 Separating the Effects of Other Causes of NDVI Changes 5.4 Abrupt Changes 6 Development of Land Degradation Assessments 7 Experts’ Opinions on the Use of NDVI for Land Degradation Assessment 7.1 NDVI: Rainfall Proportionality, an Important Consideration 7.2 Building on the GLADA Assessment 8 Main Global NDVI Datasets, Databases, and Software 8.1 Main NDVI Datasets 8.2 Quality-Related Considerations 8.3 Precipitation Datasets 8.4 NDVI Software 9 Country-Level Use of Satellite Products to Detect and Map Land Degradation Processes 10 Challenges to the Use of NDVI in Land Degradation Assessments 11 Recommendations for Future Application of NDVI 11.1 In the Convention National Reporting 11.2 In a Revised GEF Resource Allocation Methodology 12 Conclusion Appendix A Inventory of Some Global and Sub-global Remote Sensing-Based Land Degradation Assessments Appendix B Use of Remote Sensing-Derived Land Productive Capacity Dynamics for the New World Atlas of Desertification (WAD) Appendix C Developments with GLADA Appendix D China’s Experiences on the Usefulness of GLADA Appendix E Main Features of Image Products from the Different Sensors Appendix F UNCCD Core Indicators for National Reporting: ICCD/COP(11)/CST/2 Appendix G Current Cost of Selected Satellite Imagery Appendix H Software for Processing Satellite Images to Develop the NDVI References
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  • 51
    Monographie ausleihbar
    Monographie ausleihbar
    [Cham] : Springer
    Signatur: IASS 16.90596
    Materialart: Monographie ausleihbar
    Seiten: xxxix, 219 pages , Illustrationen, Diagramme, Karten , 24 cm
    ISBN: 3319418327 , 9783319418322 , 9783319418346 (electronic)
    Sprache: Englisch
    Zweigbibliothek: RIFS Bibliothek
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  • 52
    Monographie ausleihbar
    Monographie ausleihbar
    Berlin ; Heidelberg : Springer
    Signatur: 12/M 00.0197 ; PIK N 456-99-0012
    Materialart: Monographie ausleihbar
    Seiten: XI, 179 S.
    ISBN: 3540657843
    Klassifikation:
    Meteorologie und Klimatologie
    Sprache: Englisch
    Standort: Lesesaal
    Standort: A 18 - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
    Zweigbibliothek: PIK Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 53
    Unbekannt
    Berlin ; Heidelberg : Springer
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  • 54
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    Unbekannt
    Berlin ; Heidelberg : Springer
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    Unbekannt
    Berlin ; Heidelberg : Springer
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  • 62
    Unbekannt
    Berlin ; Heidelberg : Springer
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    Unbekannt
    Berlin ; Heidelberg : Springer
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  • 75
    Unbekannt
    Berlin ; Heidelberg : Springer
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  • 76
    facet.materialart.
    Unbekannt
    GFZ German Research Centre for Geosciences
    In:  Scientific Technical Report STR - Data | GIPP Experiment and Data Archive
    Publikationsdatum: 2021-02-13
    Beschreibung: A temporary seismic array was installed in combination with a meteorological station in the Dead Sea valley, Jordan. Within the scope of the HGF virtual institute DESERVE we operated 15 temporary seismic stations between February 2014 and February 2015 together with a nearby meteorological station close to the east coast of the Dead Sea. The main aim was to acquire data to study the influence of wind on seismic records and retrieve related meteorological parameters. The study area is scarcely populated and has ideal meteorological conditions to study periodically occurring winds.
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/report
    Format: application/pdf
    Format: application/pdf
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  • 77
    Publikationsdatum: 2021-04-10
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/report
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 78
    Publikationsdatum: 2020-02-12
    Beschreibung: The International Continental Scientific Drilling Program (ICDP) performed a dual-phase scientific drilling project to investigate mountain-building processes called Collisional Orogeny in the Scandinavian Caledonides (COSC). The borehole COSC-1 was drilled through the Lower Seve Nappe, as the first of two 2.5 km deep drill holes close to Åre, central Sweden. The recovered rocks comprise a 1650 m thick suite of high grade gneisses and amphibolites with clear Seve Nappe affinities, while the lower 850 m com-prise rather homogenous mylonitic gneisses with interfingered K-rich phyllonite bands of cm to several m size and some intercalated amphibolites. The different lithologies all crosscut the core in a subhorizontal direction with foliation of gneisses and phyllonites in the same direction. Albite and garnet porphyroblasts with pressure shadows show syn-deformational growth and the same sub-horizontal alignment. The focus was to detect chemical and mineralogical differences in mylonitic and host rocks and to relate these differences to either metasomatism and deformation or inher-ited source rock variance. Another goal of this work is to compare chemical core scanning instruments. For this purpose, two different μ-Energy-Dispersive X-Ray Fluorescence (μ-EDXRF), Laser Induced Breakdown Spectroscopy (LIBS) and hyperspectral imaging tech-niques served to measure seven samples from the lower 850 m of the COSC-1 core. This report will explain the data sets gained during this study. The metadata will be pre-sented in an additional file including XRF data from the AVAATECH XRF core scanner in a text file as well as data sets of the other used devices in original file formats.
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/report
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 79
    facet.materialart.
    Unbekannt
    GFZ German Research Centre for Geosciences
    In:  Geologische Speicherung von CO2
    Publikationsdatum: 2020-02-12
    Beschreibung: Movie 7: "The abandonment of a CO2 storage site – pilot project Ketzin" (Length 10:39) Produktionsjahr: 2015
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/other
    Format: video/mpeg
    Standort Signatur Erwartet Verfügbarkeit
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  • 80
    facet.materialart.
    Unbekannt
    GFZ German Research Centre for Geosciences
    In:  Scientific Technical Report STR
    Publikationsdatum: 2020-02-12
    Beschreibung: This document provides information on the site effects studies carried out in Kyrgyzstan. These studies are carried out within the Global Change Observatory Central Asia of the GFZ and the Earthquake Model Central Asia (EMCA). Furthermore, the site effects estimated using different approaches are incorporated into the probabilistic seismic hazard assessment (PSHA) for Bishkek.
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/report
    Format: application/pdf
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 81
    facet.materialart.
    Unbekannt
    GFZ German Research Centre for Geosciences
    In:  Scientific Technical Report STR - Data
    Publikationsdatum: 2020-02-12
    Beschreibung: This publication compiles the operational data (flow rate, cumulative mass, density, injection temperature, electrical conductivity and in-well pressure data) recorded during a field experiment on brine injection at the Ketzin pilot site during October 2015 to January 2015. Anyone should feel free to make use of the published data for any ethical purpose (civil use) – for example for process modelling and engineering.
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/report
    Format: application/pdf
    Format: application/pdf
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  • 82
    Publikationsdatum: 2020-05-19
    Beschreibung: Radial water jet drilling uses the power of a focused uid jet, which is capable of drilling multiple laterals of about 100 m length out of an existing well and thereby stimulating the well with full control on the operational parameters like initial direction of the lateral, length, uid pressure etc. In contrast to hydraulic stimulation treatments, this technology can potentially provide a network of enhanced uid pathways around a geothermal well to intersect with existing high permeable structures like fracture or karst systems within the reservoir, independent of the ambient stress eld. Applying RJD, laterals typically have a diameter ranging from about 25 mm to 50 mm, depending on jetting parameters like pressure and ow rate as well as rock properties. Drilling a single lateral in a cased well requires approximately 12 hours, as the casing has to be penetrated using a coiled tubing operated milling bit before jetting into the formation. In case the target zone is open-hole, jetting a lateral is considerably faster. Compared to conventional hydraulic stimulation treatments with required uid volumes of more than 1000 m3, only a fraction of this is needed for RJD (〈 1 m3). In addition, no pressure will be applied to the reservoir, thereby reducing environmental risk as well as the risk of induced seismicity considerably. Although RJD is investigated and applied in the hydrocarbon industry, applications in geothermal wells are very rare. If the technology can be shown to increase the eciency of a geothermal well, it will provide an interesting alternative to conventional hydraulic stimulation treatments. RJD shows highest eciency in terms of performance increase in reservoirs with low permeability (〈 10 mD). The most important criteria for the well are the minimum diameter (4 1/2" OD casings) and maximum along hole depth (about 5 km). So far, RJD operations have been performed in wells with a an inclination of up to 46 . Technologies, however, have been developed to perfom RJD operations even in horizontal well sections. Depending on the initial production; for tight gas reservoirs the gas production can be improved with a factor 4-7, simulation for geothermal wells suggest a potential performance increase by a factor of up to 3 when 8 laterals of 100 meter are successfully drilled and geological conditions are favourable. Since the potential increase depends on the type of the geothermal reservoir as well as its properties, the improvement factor has to be conrmed by eld experiments. Currently no major hazards to the well have been identied. The main risk associated with a RJD treatment appears to be sand production from the open-hole completion. However since the amount of experience and well-documented cases is limited, not all risks may have been identied at this moment in time. Major uncertainties in the production estimates are the long-term (〉1 year) stability of the jetted laterals and the eect of sub-surface heterogeneity. The jet-ability of typical geothermal reservoir rocks is also not well documented. As the jet-ability strongly depends on physical rock properties and in-situ reservoir conditions, which are signicantly dierent to typical hydrocarbon reservoirs, the feasibility of RJD in dierent geological settings has to be evaluated. Although, RJD presents a low cost stimulation method with currently no major identied risk to the well nor to the environment, experience with RJD in the geothermal industry is rare. Field applications are therefore key to evaluate the potential of the RJD stimulation technology for geothermal applications.
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/report
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 83
    Publikationsdatum: 2020-11-05
    Beschreibung: The International Geodynamics and Earth Tide Service (IGETS) was established in 2015 by the International Association of Geodesy (IAG). IGETS continues the activities of the Global Geodynamics Project (GGP, 1997-2015) to provide support to geodetic and geophysical research activities using superconducting gravimeter data within the context of an international network. The primary objective of IGETS is to provide a service to monitor temporal variations of the Earth’s gravity field through long-term records from ground gravimeters, tiltmeters, strainmeters and other geodynamic sensors. IGETS also continues the activities of the International Center for Earth Tides, in particular, in collecting, archiving and distributing Earth tide records from long series of the various geodynamic sensors. This report is a compilation of data descriptions originating to a large part from GGP but including updates and extensions for IGETS.
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/report
    Format: application/pdf
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 84
    Publikationsdatum: 2020-05-19
    Beschreibung: Developing ow paths or expanding existing pathways in deep geological strata is generally referred to as "stimulation". To extract heat from geothermal reservoirs, stimulation treatments are carried out by injecting water at high pressure into the formation (hydraulic stimulation), by dissolution of certain mineral components, mostly carbonates, thus increasing the hydraulic pathways (chemical stimulation), or by cooling of the rock to induce tensile stresses which helps the fracture expansion (thermal stimulation). The achieved factor of productivity increase by conventional stimulation treatments is reported to be between 1.3 and 25. In petrolium industry a significant decline of the production increase occurs already during the first year after stimulation. The time to refracturing is typically 4 to 7 years. It is not clear whether these values are also appropriate for geothermal applications. The sustainability of the increase in permeability due to thermal stimulation depends on the situation: for an injection well the increase remains for few years. For production wells, the longevity of the stimulation depends on the self-propping ability of the rock. After reviewing the current situation in the field of deep geothermal energy in Europe, dierent stimulation techniques are discussed. Furthermore, case studies of stimulation treatments in deep geothermal reservoirs are presented. In the subsequent chapters the authors present the methods of stimulation treatment in deep geothermal wells to show the increase of productivity, to explain the potential benefits and risks and estimate the economic performance.
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/report
    Format: application/pdf
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  • 85
    Publikationsdatum: 2020-02-12
    Beschreibung: This publication is a result of the 14th TRACE conference (Tree Rings in Archaeology, Climatology and Ecology) organized by the Department Physical, Chemical and Natural Systems of the University Pablo de Olavide (UPO) and the Association for Tree-ring Research (ATR), in collaboration with Pyrenean Institute of Ecology-Spanish National Research Council (IPE-CSIC), University of Barcelona (UB), Forest and Wood Technology Research Centre (CETEMAS) and University of Valladolid (UVa). The TRACE 2015 conference was held on May 20-23, 2015 for the first time in the Iberian Peninsula, in Sevilla, Spain.
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/report
    Format: application/pdf
    Format: application/pdf
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