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  • English  (2,789)
  • Portuguese  (11)
  • 1995-1999  (2,132)
  • 1955-1959  (670)
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  • 1
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [s.n.]
    Call number: AWI G7-19-92074
    Type of Medium: Monograph available for loan
    Pages: 68 Seiten , Illustrationen
    Language: English
    Note: CONTENTS: Flight plan 1998. - C130 schedule. - NGRIP 1998 schedule. - Overview of 1998 schedule. - Camp setup. - Quartering and buildings. - Number of field participants. - NGRIP 1998 sub programs. - SITREP. - Term of reference for the NG RIP field work. - Accidents and illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 1998. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NGRIP camp load. - Kangerlussuaq and the surrounding area. - Thule Air Base, Greenland, Base Operations. - Other useful information for Thule passengers. - Uplift 1998. - Typical specifications for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan. - Summary of frequencies used in Greenland. - Phonetic alphabet. - Personal field equipment. - Operation of NERA lnmarsat M terminal. - Map of NGRIP camp. - NGRIP trenches. - Map of NGRIP area. - Map of Greenland. - Map of the ice divide north of GRIP. - Map of the magnetic declination in Greenland. - Density vs temperature of hole liquid. - Surface measurements near NGRIP. - Positions in Greenland. - Relevant distances and directions. - List of NGRIP addresses.
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  • 2
    Series available for loan
    Series available for loan
    Boulder, Colo. : University Corp. for Atmospheric Research
    Call number: AWI A1-19-92163
    Description / Table of Contents: "Our changing climate is the fourth in a series of publication on climate and global change intended for public education. The documents are a collaborative effort of the UCAR Joint Office for Science Support and NOAA Office of Global Programs, for the purpose of raising the level of public awareness of issues dealing with global environmental change."
    Type of Medium: Series available for loan
    Pages: 24 Seiten , Illustrationen , 28 cm
    Series Statement: Reports to the nation on our changing planet 4
    Language: English
    Note: Table of Contents: Climate and American People. - Earth's climate: A dynamic system. - Why does earth's climate change?. - Can we change the climate?. - The Greenhouse Effect. - Why are Greenhouse gas amounts increasing?. - Aerosols: Sunscreen for the planet?. - How has climate changed in the past century?. - Can we predict climate change?. - What do climate models tell us about our future?. - Where do we go from here?
    Location: AWI Reading room
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  • 3
    Monograph available for loan
    Monograph available for loan
    Hamburg : Max-Planck-Institut für Meteorologie
    Call number: AWI A3-19-92156
    Type of Medium: Monograph available for loan
    Pages: 73 Seiten
    Language: English
    Note: CONTENTS: Foreword / Klaus Hasselmann. - GROUP HASSELMANN. - Improving the SIAM Economy Module / Volker Barth. - A Nonlinear Impulse Response Model of the Coupled Carbon Cycle-Ocean-Atmosphere Climate System / Georg Hooß. - Potential Impact of Uncertainty and Natural Climate Variability in the Design of Optimal Climate Protection Policies / Victor Ocaña. - Climate Change Detection for the Annual Cycle of Temperature and Precipitation / Reiner Schnur. - Estimating the Sensitivity of a Regional Atmospheric Model to a Sea State Dependent Roughness Using Ensemble Calculations / Ralph Weisse, Hauke Heyen, and Hans von Storch. - CLIMATE MODEL AND DATA SECTION DKRZ. - Modellbetreuungsgruppe - An Update / Ulrich Cubasch. - Prediction of Global Change Using Different Models: An Intercomparison / Ulrich Cubasch. - The ECHO-G Coupled Climate Model on the NEC SX-4 / Stephanie Legutke. - Data Group Activities and Status / Hans Luthardt. - GROUP GRAF. - The Possible Effect of Biomass Burning on Local Precipitation and Global Climate / Hans-F. Graf. - The Leading Variability Mode of the Coupled Troposphere-Stratosphere Winter Circulation in Different Climate Regimes / Judith Perlwitz. - Numerical Simulation of Scavenging Processes in Explosive Volcanic Eruption Clouds / Christiane Textor. - Three-dimensional Simulation of Stratospheric Aerosol / Claudia Timmreck. - GROUP LATIF. - Oceanic Control of Decadal North Atlantic Sea Level Pressure Variability in Winter / Mojib Latif, Klaus Arpe, and Erich Roeckner. - Climatology and Variability in the Tropical Pacific in the Coupled GCM ECHO-G / Astrid Baquero. - Large-scale Air-sea Interactions in the Midlatitudes / Dietmar Dommenget. - ENSO Prediction Experiments with the Coupled GCM ECHO-G / Anselm Grötzner, Mojib Latif, and Stephan Venzke. - Simulating the Response of an Ocean General Circulation Model to North Atlantic Oscillation-type Forcing / Helmuth Haak. - The Role of Indian Ocean Sea Surface Temperature in Forcing East African Climate Anomalies / Mojib Latif, Dietmar Dommenget, and Mihai Dima. - A Circulation Model for Paleoclimate Studies: Model Description and First Applications / Gerrit Lohmann. - Southern Ocean Investigations with the HOPE Model / Simon J. Marsland. - The Atmospheric Response to SST Anomalies in Midlatitudes / Ute Merkel. - Equatorial Pacific Thermocline Circulation and Decadal Climate Variability / Keith Rodgers. - Ocean Model Intercomparison Project / Frank Röske. - Assimilation of Topex/Poseidon Altimeter Data into an Ocean GCM to Improve ENSO Forecasts / Sigrid Schöttle. - GROUP MIKOLAJEWICZ. - Development of the new C-HOPE OGCM / Uwe Mikolajewicz. - The Atlantic Thermohaline Circulation: Large Scale and Small Scale Aspects / Johann Jungclaus. - The Global Ocean Assimilation System GOAS / Detlev Müller. - Study of the Climate Variability in the Northern European and Arctic Seas Using Coupled Ocean-Atmosphere Models / Dmitry Sein. - GROUP MAIER-REIMER. - Modeling of Marine Biogeochemistry / Ernst Maier-Reimer. - (1) Optimisation of a Marine Silicon Cycle Model and (2) Artificial Sediment Cores / Christoph Heinze. - Modeling Stable Water Isotopes and Vapor Source Regions over Greenland and Antarctica / Martin Werner. - OTHERS. - Ongoing Work in the Bengtsson Department / Marco Giorgetta. - E-journals and Databases for MPG Scientists: How to's / Carola Kauhs. - INDEX OF AUTHORS. -
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  • 4
    Monograph available for loan
    Monograph available for loan
    Boston [u.a.] : Allyn and Bacon
    Call number: PIK F 110-95-0417 ; PIK F 110-00-0429
    Type of Medium: Monograph available for loan
    Pages: XIV, 369 Seiten , Illustrationen, Diagramme , 24 cm
    ISBN: 0205156053 (alk. paper)
    Language: English
    Location: A 18 - must be ordered
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Branch Library: PIK Library
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  • 5
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [s.n.]
    Call number: AWI G7-19-92129
    Type of Medium: Monograph available for loan
    Pages: 62 Seiten , Illustrationen
    Edition: Draft
    Language: English
    Note: CONTENTS: Flight plan 1996. - C130 schedule. - NGRIP 1996 Schedule. - Overview of 1996 schedule. - Camp Layout. - Buildings. - Number of field participants. - NGRIP 1996 Sub programs. - CARDS Radar test. - KMS Elevation measurements. - SITREP. - Terms of Reference during the field operation. - Accidents and Illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 1996. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NGRIP camp load. - Kangerlussuaq and Surrounding Area. - Thule Air Base, Greenland, Base Operations. - Other useful information for Thule passengers. - Uplift 1996. - Typical specs for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan. - Summary of frequencies used in Greenland. - Phonetic alphabet. - Personal field equipment. - Map of GRIP camp. - NGRIP, Maps of one and two line set up. - NGRIP trenches. - Map of Greenland. - Map of north Greenland. - Map of ice divide north of GRIP. - Map of magnetic declination in Greenland. - Positions in Greenland. - Relevant distances and directions. - 1996 Twin Otter hours. - List of NGRIP addresses.
    Location: AWI Reading room
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  • 6
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [s.n.]
    Call number: AWI G7-19-92076
    Type of Medium: Monograph available for loan
    Pages: 67 Seiten , Illustrationen
    Language: English
    Note: CONTENTS: Flight plan 1997. - C130 schedule. - NGRIP 1997 schedule. - Overview of 1997 schedule. - Camp layout. - Quartering and buildings. - Number of field participants. - NGRIP 1997 sub programs. - CARDS Radar test. - KMS elevation measurements. - SITREP. - Terms of reference during the field operation. - Accidents and illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 1997. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NGRIP camp load. - Kangerlussuaq and the surrounding area. - Thule Air Base, Greenland, Base Operations. - Other useful information for Thule passengers. - Uplift 1997. - Typical specifications for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan. - Summary of frequencies used in Greenland. - Phonetic alphabet. - Personal field equipment. - Map of NGRIP camp. - NGRIP, Central Camp. - NGRIP trenches. - Map of NGRIP area. - Map of Greenland. - Map of the ice divide north of GRIP. - Map of the magnetic declination in Greenland. - Positions in Greenland. - Relevant distances and directions. - 1997 Twin Otter hours. - List of NGRIP addresses.
    Location: AWI Reading room
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  • 7
    Monograph available for loan
    Monograph available for loan
    [Erscheinungsort nicht ermittelbar] : [Verlag nicht ermittelbar]
    Call number: AWI P4-19-92238
    Type of Medium: Monograph available for loan
    Pages: 16 Seiten , Illustrationen
    Language: English
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 8
    Monograph available for loan
    Monograph available for loan
    [Erscheinungsort nicht ermittelbar] : [Verlag nicht ermittelbar]
    Call number: AWI G7-19-92324
    Type of Medium: Monograph available for loan
    Pages: 23 Seiten , Illustrationen
    Language: English
    Note: Contents: 1. Personnel at DC. - 2. Summary timetable of events for EPICA personnel. - 3. Transport to/from DC for EPICA personnel. - 4. Building period. - 5. Scientific activity - equipment layout. - 6. Science processing line. - 7. Results from this season. - 8. General comments on communications, logistics and general status of the camp. - 9. Tasks that EPICA personnel need to do next season. - 10. Recommendations for 1998/99. - 11. Acknowledgements.
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  • 9
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-95/14
    In: CRREL Report, 95-14
    Description / Table of Contents: Current protocols for decontaminating devices used to sample groundwater for organic contaminants are re­viewed. Most of the methods given by regulatory agencies provide little scientific evidence that justify the recommended protocols. In addition, only a few studies that actually compared various decontamination proto­cols could be found in the open literature, and those studies were limited in their scope. Various approaches for decontamination and criteria that are important in determining how effectively a surface could be decontami­nated are discussed.
    Type of Medium: Series available for loan
    Pages: iii, 15 Seiten , Illustrationen
    Series Statement: CRREL Report 95-14
    Language: English
    Note: CONTENTS Preface Introduction Sorption and desorption of organic contaminants Decontamination methods Aqueous cleaning methods Cleaning or rinsing with organic solvents Chemical neutralization methods Current protocols to decontaminate groundwater sampling devices Variations in methodology Special instructions for cleaning pumps Effectiveness of various decontamination methods Low-temperature considerations Conclusions Literature cited
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  • 10
    Call number: AWI G1-19-92510
    Type of Medium: Monograph available for loan
    Pages: 592 Seiten , Illustrationen
    ISBN: 84-920268-6-3
    Language: Spanish , English
    Note: ÍNDICE PRÓLOGO INTRODUCCIÓN El estudio científico de las cavidades kársticas y las Ciencias Geológicas. Una buena alianza / J.J. Durán. KARST, TECTÓNICA Y SISMICIDAD Evidencias tectónicas y sísmicas a partir del estudio de espeleotemas: conocimiento actual y desarrollo futuro / P. Forti Evolución tectosedimentaria del entorno de la Cueva de Nerja durante el Plio-Cuatemario. / A. Guerra-Merchán, D. Ramallo y F. Serrano Análisis de la fracturación reciente en los espelotemas de la Cueva de Nerja, Málaga. / P. Gumiel, J.J. Durán, J. López-Martínez, J.M. González-Casado, B. Andreo y F. Carrasco La fracturación en la Cueva de los Enebralejos, Segovia, borde norte del Sistema Central. / J. Barea, J.J. Durán, J. Giner, J.M. González-Casado y J. López-Martínez Control estructural de la cavidad kárstica "La Cuevona" (Ribadesella, Asturias) / J. L. Alonso, J. G. García-Ramos y M. Gutiérrez-Claverol El karst de la Alquería (Vélez-Rubio, Almería) / A. González y J.A. Martínez The influence of tectonics on karstification of Permian-Carboniferous limestone from westem Serbia. / P. Pavlovic and D. Stojiljkovic Estudio preliminar de la Cueva de Castelar (Ciudad Real). El ejemplo español de karst en rocas cristalinas / C. J. Gavilán, l. Alonso y J.J. Durán REGISTROS SEDIMENTARIOS KÁRSTICOS Y RECONSTRUCCIONES PALEOAMBIENTALES Endokarstic sedimentary records and paleo-environmental reconstructions in caves / D. C. Ford Speleothem records of environmental changes and the past-bases and potential. / Y. Y. Shopov, L. Tsankov, L. N Georgiev, C.J Yonge, H.P.R. Krouse and A.J.T. Jull Significance of Luminescent spelothem records for determination of orbital variations, glaciations and timing of termination-II. / Y.Y. Shopov, D. Stoykova, M. Sanambria, L. Tsankov, D. Ford, L. Georgiev and D. Georgieva Dataciones isotópicas de espeleotemas procedentes de cuevas costeras de Mallorca. Estado actual de las investigaciones / A. Ginés, J. Ginés, J.J. Fornós y P. Tuccimei Estudio isotópico sobre las condiciones de precipitación de "calcitas flotantes" actuales procedentes de tres cuevas en la isla de Mallorca / C. Jiménez de Cisneros y E. Caballero Geoquimica de travertinos procedentes de una fuente termal. Estimaciones sobre su velocidad de formación. / E. Caballero, C. Jiménez de Cisneros y C. Jiménez Travertinos asociados a los manantiales del borde occidental de la Sierra de la Alfaguara (Granada, Sur de España) / B. Andreo, M. Martín-Martín, A. Martín-Algarra y R. Julia Espeleotemas y morfogénesis exokárstica. El ejemplo de la Sierra del Endrinal (Grazalema, Cádiz) / J Rodríguez Vidal, G. Alvarez, L. M. Cáceres, A. Martínez Aguirre y J. M. Alcaraz La evolución de los materiales de acumulación en el Altiplano carbonatado de Cantanhede (NO de Coimbra-Portugal) / A. De Marco y L. A. Dimuccio Cave genesis in karst regions of Balkan Península / D. Vasileva Skocjanske Jame, Slovenia: development of caves related to rock characteristics and rock relief / M. Knez and T. Slabe Facies mineralógicas de las arenas de los rellenos kársticos de la Sierra de Atapuerca (Burgos) / T. Aleixandre y A. Pérez González Mineralogy of cave deposits from Bihor Mountains (Romanía) / L. Ghergari and T. Tamas Análisis polínico de sedimentos en cavidades kársticas: hacia un nuevo desarrollo conceptual / J. S. Carrión, C. Navarro y M. Munuera El karst de la Espluga de Francolí: características fisicas e hidrogeológicas. Interés en la educación ambiental / J M Cervelló, M Monterde, J Ramoneda y A. Freixes Análisis sistemático y ecológico de los roedores del Pleistoceno Superior procedentes de la Cueva de las Ventanas (Granada, España) / A. Ruiz-Bustos y J A. Riquelme Cantal Geology, geomorphology, tectonics and geological map ofthe Cave of Riomurtas (Narcao, Southwest Sardinia). J De Waele and A. Muntoni CONSERVACIÓN DE CAVIDADES: EL IMPACTO ANTRÓPICO La dynamique du milieu souterrain, concepts de base servant a la conservation des grottes / A. Mangin, D. D 'Hulst et F. Bourges L' eclairage et la protection des grottes / F. Bourges, A. Mangin et D. D'Hulst Análisis de las concentraciones de 222Rn del aire de la Cueva de Nerja / C. Dueñas, M.C. Fernández, J Carretero, E. Liger y S. Cañete El medio ambiente subterráneo de la Cueva de Nerja (Málaga). Modificaciones antrópicas / F. Carrasco, B. Andreo, I Vadillo, J.J. Durán y C. Liñán EL AGUA Y EL KARST Recharge and behaviour of karst aquifers. Examples from Southeastem France / J Mudry, Y. Guglielmi, A. Chalumeau, A. Reynaud and Y. Paquette ¿Pueden las teorías sobre el desarrollo del karst contribuir al mejor conocimiento de la moderna hidrogeología del karst? / J Silar Behaviour of the epikarst aquifer: signal analysis and flow analysis. Si te of Lascaux Cave. / R. Lastennet, A. Denis, Ph. Malaurent and J Vouvé Primeros datos sobre la variabilidad estacional de la infiltración en la Cueva del Agua (lznalloz, Granada) / F. Sánchez-Martos, J. M Calaforra y M J González-Ríos Primeros resultados sobre la caracterización hidroquímica y evolución espacial de las aguas del sistema kárstico de Valporquero, Cordillera Cantábrica / JJ Durán, M Vallejo, l. Herráez y J López-Martínez Hidrodinámica e hidroquímica de las aguas de goteo de la Cueva de Nerja / C. Liñán, B. Andreo, F Carrasco e l. Vadillo Modelización de los procesos hidrogeoquímicos que afectan al agua de goteo de la Cueva de Nerja / J. Cardenal, J. Benavente, B. Andreo y F. Carrasco Algunos procesos hidrogeoquímicos en la Cueva de Canalobre y en el acuífero del Cabeçó D'Or (Alicante) / J. M Andreu, J.C. Cerón, A. Pulido-Bosch y A. Estévez Tracing technique as a contribution to karstology: past experience, new directions / Ph. Meus and C. Ek Ensayos de trazadores en acuíferos kársticos: desarrollo histórico y anecdotario / J. G. Yélamos Trazados en la Unidad Hidrogeológica Izarraitz (País Vasco): consideraciones sobre la complejidad estructural y dinámica del medio kárstico / l. Mugerza, T. Morales, l. Antigüedad, J.A. Uriarte, l. Fernández de Valderrama, J.M Gonzalo y P. Bezares d18O and average recharge-altitude relationships in karstic springs / Th. Herold, S.M. Bernasconi, P. Jordan and F. Zwahlen Concentración inicial de radiocarbono en agua subterránea del karst de Bohemia central / J. Silar y K. Záhrubsky Los sistemas kársticos del Parque Natural del Cadí-Moixeró (Pirineo oriental, Catalunya) / J. Ramoneda, A. Freixes, M. Monterde, J. P. Morin y L. Gourcy Hidroquímica de la Sierra de Guara / J. A. Cuchí, J.A. Manso, M. Subías y J. Buera Nuevas aportaciones sobre el funcionamiento hidrogeológico del acuífero kárstico multicapa del Calar del Mundo (Provincias de Albacete y Jaén) / T. Rodríguez-Estrella Posible contribución del karst de Los Berros (Argentina) para el abastecimiento a la industria de la región / C. Wetten y O.A. Damiani Karst groundwater quality in Austria / M. Kralik Modelo numérico del flujo subterráneo de un acuífero kárstico en Yucatán, México. Implicaciones hidrogeológicas / R. González, l. Sánchez y J. Gamboa Aprovechamiento de manantiales kársticos de carácter intermitente mediante operaciones de recarga artificial de acuíferos. Las Ufanes de Gabellí (Mallorca) / J. M Murillo, C.J. Gavilán, J.A. de la Orden The karstic aquifer ofthe Izhora Plateau (Russia) and problems ofits use under anthropogenic pressure / A. N Voronov, NA. Vinograd and A.A. Shvarts Aspects of groundwater vulnerability mapping in karst regions with the help of GIS / P.S. Bezrukov Natural and anthropogenic influences as threats to pits in the Debeli Namet Glacier (Durmitor National Park, Montenegro) / P. Djurovic Carbon inorganic total dissolved origine, repartition and it's karstification impact / C. Emblanch, H. Celle, B. Blavoux and J. M. Puig , Beiträge teilweise in spanischer, teilweise in englischer Sprache
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  • 11
    Call number: M 19.92590
    Pages: 642 Seiten
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 12
    Call number: AWI SCAR-AR-19-92813
    In: National report to SCAR on Antarctic scientific activities for the years ... and planned program for ... : progress report, 41
    Type of Medium: Series available for loan
    Pages: 25 Seiten
    Series Statement: National report to SCAR on Antarctic scientific activities for the years ... and planned program for ... : progress report 41
    Language: English
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  • 13
    Monograph available for loan
    Monograph available for loan
    Joensuu : European Forest Institute
    Call number: PIK W 510-19-92844
    Type of Medium: Monograph available for loan
    Pages: VIII, 62 Seiten , Diagramme
    ISBN: 9529844255
    Series Statement: Working paper / European Forest Institute 11
    Language: English
    Branch Library: PIK Library
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  • 14
    Call number: PIK W 510-19-92842
    Type of Medium: Monograph available for loan
    Pages: 72 Seiten , Diagramme
    ISBN: 9529844182
    Series Statement: Working paper / European Forest Institute 7
    Language: English
    Branch Library: PIK Library
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  • 15
    Call number: PIK W 510-19-92845
    Type of Medium: Monograph available for loan
    Pages: IX, 130 Seiten
    Series Statement: Working paper / European Forest Institute 12
    Language: English
    Branch Library: PIK Library
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  • 16
    Call number: PIK W 510-19-92849
    Type of Medium: Monograph available for loan
    Pages: 111 Seiten
    ISBN: 9529844557
    Series Statement: Working paper / European Forest Institute 16
    Language: English
    Branch Library: PIK Library
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  • 17
    Monograph available for loan
    Monograph available for loan
    Joensuu : European Forest Institute
    Call number: PIK W 510-19-92852
    Type of Medium: Monograph available for loan
    Pages: 59 Seiten , Diagramme
    ISBN: 9529844611
    Series Statement: Working paper / European Forest Institute 18
    Language: English
    Branch Library: PIK Library
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  • 18
    Monograph available for loan
    Monograph available for loan
    Joensuu : European Forest Institute
    Call number: PIK W 510-19-92854
    Type of Medium: Monograph available for loan
    Pages: 252 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 9529844646
    Series Statement: Working paper / European Forest Institute 21
    Language: English
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  • 19
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-95/11
    In: CRREL Report, 95-11
    Description / Table of Contents: A pavement joint seal prevents the passage of liquids into the pavement base and the intrusion of solids into the joint. The primary mechanical requirements of a pavement seal are that it respond elastically or viscoelastically to any movement of the joint without failure and that it withstand indentation of hard objects like rocks. Because pavement joint movements and seal deformations can be large, elastomeric sealants are often used to form seals. Winter conditions are recognized as the most critical for a seal because of the possibility that failure stresses will be reached as the joint opens to a maximum and the material stiffens in response to the temperature reduction. This report reviews the specific problems and requirements that cold climates create for the performance of elastomeric seals. Emphasis is placed on the material response behavior that can lead to failure of a seal. In an attempt to clarity the mechanics of sealant and seal performance associated with low-temperature pavement applications and to address the issue of low-temperature stiffening That should be a dominant factor in the selection of a sealant, this report presents background information on the formulation and mechanical properties of elastomeric seal materials and the structural behavior of field-molded joint and crack seals.
    Type of Medium: Series available for loan
    Pages: iv, 20 Seiten , Illustrationen
    Series Statement: CRREL Report 95-11
    Language: English
    Note: CONTENTS Page Preface Introduction Elastomers and sealant formulations Mechanical behavior of sealants Phenomenological behavior of rubbers and elastomers Hyperelastic constitutive model Examples of sealant behavior Mechanical response of seals Basic structural geometry and loading configurations of seals Conventional performance testing for studying the load and deformation response of joint and crack seals Response of seals to joint movements Summary and recommendations Literature cited Abstract
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  • 20
    Call number: AWI SCAR-IT-19-92821
    In: Italy antarctic research report to SCAR, June-1999
    Type of Medium: Series available for loan
    Pages: 15, V Seiten
    Language: English
    Location: AWI Archive
    Branch Library: AWI Library
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  • 21
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-95/7
    In: CRREL Report, 95-7
    Description / Table of Contents: Before vehicle mobility in snow can be reliably predicted, a complete understanding of motion resistance in snow is required. This report examines several aspects of wheeled vehicle motion resistance using results obtained with the CRREL instrumented vehicle. Resistances of leading and trailing tires are examined. Limited data are presented for undercarriage drag, and third and fourth wheel passes in the same rut are initially analyzed, as is how snow deforms around a wheel. For the CRREL instrumented vehicle, a trailing tire has a resistance coefficient of about 0.017 for snow depths less than about 22cm. For deeper snow, the disruption of the snowpack caused by a preceding wheel causes snow to fall into the rut, resulting in higher trailing tire coefficients. For larger vehicles, which in some cases have trailing tires carrying larger loads than preceding tires, the trailing tire coefficients are on the order of 0.048 and 0.025 for second and third trailing wheels respectively. Since there are no trailing tire data available for these larger vehicles, these values are based on nonlinear regression analysis, which includes a prediction of the leading tire resistance. The results and observations of this study are applied in a reanalysis of the towed resistance data obtained during the U.S. Army's Wheels vs. Tracks study. An improved algorithm is presented for predicting wheeled vehicle motion resistance caused by snow.
    Type of Medium: Series available for loan
    Pages: v, 39 Seiten , Illustrationen
    Series Statement: CRREL Report 95-7
    Language: English
    Note: CONTENTS Page Preface Nomenclature Introduction Experimental procedure Results and analysis Leading tire resistance Trailing tire resistance Deep snow Undercarriage drag Multiple passes Shallow snow resistance model Summary Literature cited Appendix A: Snow data Appendix B: Observations of snow deformation by a wheel Appendix C: Wheeled vehicle motion resistance data Abstract
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  • 22
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-95/1
    In: CRREL Report, 95-1
    Description / Table of Contents: This report annotates the cold regions mobility prediction routines included in the CAMMS/ALBE mobility models. It further explains the development of the algorithms that are used in these models to describe the interaction of a vehicle with terrain that has been affected by cold weather. The following terrain conditions are discussed: undisturbed snow (shallow and deep); disturbed snow (moderately trafficked and hard packed); ice; and thawing soils. Several combinations of substrates are also considered. A stand-alone computer model is included.
    Type of Medium: Series available for loan
    Pages: v, 72 Seiten , Illustrationen
    Series Statement: CRREL Report 95-1
    Language: English
    Note: CONTENTS Page Preface Nomenclature Introduction Background Shallow snow Undisturbed snow on a firm substrate Undisturbed snow on a soft substrate Undisturbed snow over ice Disturbed, processed and packed snow Deep snow Ice Freezing or thawing ground conditions Bearing capacity of freezing ground Effect of thawing conditions on vehicle performance Speed made good Internal motion resistance Slopes Summary and recornmendations Literature cited Appendix A: Cold Regions Mobility Model CRM-1.F Appendix B: FORTRAN code using NRMM/CAMMS variables and format Appendix C: Traction coefficients on packed snow Appendix D: NRMM checkout data Abstract
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  • 23
    Monograph available for loan
    Monograph available for loan
    Cambridge : Cambridge University Press
    Associated volumes
    Call number: AWI A7-20-93527
    In: Cambridge atmospheric and space science series
    Type of Medium: Monograph available for loan
    Pages: XVIII, 316 Seiten , Illustrationen
    Edition: Transferred to digital printing
    ISBN: 0521380529 , 0521467454
    Series Statement: Cambridge atmospheric and space science series
    Language: English
    Note: Contents Preface Symbols Abbreviations 1 The atmospheric boundary layer 1.1 Introduction 1.2 History 1.3 Observing the ABL 1.4 ABL modelling 1.5 Applications 1.6 Scope of the book 1.7 Nomenclature and some definitions Notes and bibliography 2 Basic equations for mean and fluctuating quantities 2.1 Turbulence and flow description 2.2 Governing equations for mean and fluctuating quantities 2.3 The simplified mean equations 2.4 The turbulence closure problem 2.5 The second-moment equations 2.6 Turbulent kinetic energy and stability parameters Notes and bibliography 3 Scaling laws for mean and turbulent quantities 3.1 The wind profile: simple considerations 3.2 Wind profile laws: the neutral case 3.3 Monin-Obukhov similarity theory: the non-neutral surface layer 3.4 Generalized ABL similarity theory 3.5 Similarity theory and turbulence statistics Notes and bibliography 4 Surface roughness and local advection 4.1 Aerodynamic characteristics of the land 4.2 Scalar roughness lengths 4.3 The vegetation canopy 4.4 Flow over the sea 4.5 Local advection and the internal boundary layer Notes and bibliography 5 Energy fluxes at the land surface 5.1 Surface energy balance and soil heat flux 5.2 Radiation fluxes 5.3 Evaporation 5.4 Condensation Notes and bibliography 6 The thermally stratified atmospheric boundary layer 6.1 The convective boundary layer 6.2 The stable (nocturnal) boundary layer 6.3 The marine atmospheric boundary layer 6.4 Mesoscale flow and IBL growth Notes and bibliography 7 The cloud-topped boundary layer 7.1 General properties of the CTBL 7.2 Observations 7.3 Radiation fluxes and cloud-top radiative cooling 7.4 Entrainment and entrainment instability 7.5 Numerical modelling of the CTBL Notes and bibliography 8 Atmospheric boundary-layer modelling and parameterization schemes 8.1 Introduction 8.2 Surface temperature 8.3 Surface humidity (soil moisture) 8.4 Canopy parameterization 8.5 Surface fluxes 8.6 Rate equation for ABL depth 8.7 Turbulence closure schemes 8.8 ABL cloud parameterization Notes and bibliography 9 The atmospheric boundary layer, climate and climate modelling 9.1 Introduction 9.2 Sensitivity of climate to the ABL and to land surface 9.3 Research priorities Notes and bibliography Appendices References Index
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  • 24
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    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-46
    In: Research report / Cold Regions Research and Engineering Laboratory, 46
    Description / Table of Contents: Summary: The results of studies in the summer of 1957 on ice samples taken from the ice tunnel at TUTO, core samples obtained by drilling in the ice cap at Site 2, and snow samples, using the transverse vibration method and a new portable meter, are reported. Young's modulus was determined from the resonance frequency of flexural vibrations of samples cut in the form of rectangular bars; the loss factor was measured from damping; and the coefficient of viscosity calculated using the Maxwell model. The modulus of elasticity of samples of a density from 0.917 - 0.90 g/cm^3 (tunnel ice) decreased sharply with slight deviations of the density from that of pure ice. At densities from 0.90 - 0.50 g/cm^3 (deep-pit and drill-core samples) the relation between the modulus of elasticity and density was linear, while in the density range from 0.50-0.25 g/cm^3 (surface snow) the modulus of elasticity decreased exponentially. The viscosity-density relation of the samples was similar to that of elasticity vs density. Young's modulus increased slightly with decreasing temperature, while viscosity increased exponentially. The activation energy was calculated as 18.7 kcal/mol for old ice-cap ice, 13.9 kcal/mol for tunnel ice with elongated bubbles, and 13.5 kcal/mol for super-imposed ice.
    Type of Medium: Series available for loan
    Pages: v, 29, A4 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 46
    Language: English
    Note: CONTENTS Preface Summary Introduction Principle of measuring the visco-elastic nature of snow and ice by the vibration method Experimental method for determination of visco-elastic properties of snow and ice Visco-elastic properties of tunnel ice Elastic properties of snow samples from the deep pit Elastic properties of core samples obtained by drilling Elastic properties of snow near the ice-cap surface Vertical variation of Young's modulus near the surface Wind-packed snow Peter snow Relation between Young's modulus and density of snow Relation between Young's modulus and density over the range from surface snow to ice Supplementary experiments on the elastic nature of snow and ice at Site 2 Anisotropy of Peter snow Age hardening Temperature dependence of Young's modulus of core ice Viscosity measurement of snow and ice in Greenland Further experiments on the elastic nature of tunnel ice Temperature dependence of Young's modulus Frequency dependence of Young's modulus Further experiments on the viscous nature of tunnel ice Temperature dependence of loss factor Activation energy Frequency dependence of loss factor and viscosity Relation between viscosity and density Conclusions References Appendix: Experimental data
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  • 25
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-50
    In: Research report / Cold Regions Research and Engineering Laboratory, 50
    Description / Table of Contents: Summary: Samples of cryoconite from the Nuna ramp area in Northwest Greenland have been analyzed for the mineral and cryptogamic content. The non-mineral content of the blue-black gelatinous, drip-free cryoconite was found to be about 95% of the wet mass. After drying and ashing, the organic matter comprised 13.9 to 20% of the oven-dry sample. The mineral matter was predominately fine-grained, sharp-edged grains from 1 mm or larger to microscopic in size and appeared to have been wind-borne from the adjacent nunataks and moraines. The organic matter was found to be largely algae with inclusion of fungi and a rotifer. Since algae utilize radiation primarily in the blue region between 0.40 μ and 0.65 μ, where ice has the greatest transmissivity, it is possible that the cryoconite holes are at least partly the product of energy released by photosynthetic and metabolic processes rather than by direct absorption of red or heat-wave lengths of solar radiation by the dark cryoconite. The uniformity in the pattern and dimensions of the cryoconite holes supports the assumption that biological processes are dominant in their formation and growth.
    Type of Medium: Series available for loan
    Pages: iv, 12, A2 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 50
    Language: English
    Note: CONTENTS Preface Summary Introduction Observations on the Nuna ramp Sample collection Distribution of the cryoconite holes Observations in the Thule ramp Physical analyses of the cryoconite Biological assay of the cryoconite References Appendix: A study of the bacteria and fungus content of the cryoconite of the Thule area
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  • 26
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-51
    In: Research report / Cold Regions Research and Engineering Laboratory, 51
    Description / Table of Contents: Summary: The study was made in order to simulate the deformation of a tunnel in glacier ice and compare the results with the theoretical value derived from compression or tension tests. The plastic deformation of commercial polycrystalline ice and manufactured snow-ice was determined by measuring the discharge of oil from the cavity of closed hollow ice cylinders subjected to high external pressure in an oil-filled pressure chamber. The deformation vs time curves were similar to those obtained in compression or tension tests. The relationships between minimum strain rate and applied pressure, or between minimum strain rate and the circumferential stress at the surface of the inner cavity, were found to differ from the power law ϵ ̇= ασⁿ, the value of n being an increasing function of stress. Analysis of time deformation curves indicates that viscoelastic models proposed by former investigators do not apply to the mechanism of the plastic deformation of ice.
    Type of Medium: Series available for loan
    Pages: iv, 10 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 51
    Language: English
    Note: CONTENTS Preface Summary Introduction Apparatus Specimens Experimental procedures and results Analysis of the data Discussion References
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  • 27
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-52
    In: Research report / Cold Regions Research and Engineering Laboratory, 52
    Description / Table of Contents: Summary: The results of studies on the physical properties of fog whiteout, as it occurred at Site 2 on the Greenland Ice Cap in the summers of 1956 and 1957, are reported and compared with the results of other studies; the instruments, methods of measurement, and data-reduction techniques used are described; and attempts at dissipating whiteout by AgI (silver iodide) seeding are discussed briefly. Emphasis was given to measurements of fog-particle size distribution, liquid-water content, relative humidity, visibility, and atmospheric nuclei. The data are tabulated. The synoptic situations for 2 selected cases of fog whiteout at relative humidities of less than 100% (possibly because of the presence of salt solutions) are described; and the balance between the rate at which water is made available in the air as it is lifted over the Ice Cap and the rate of water flux to the snow surface is computed using various equations. Efforts at fog dispersal by AgI seeding from the ground were inconclusive.
    Type of Medium: Series available for loan
    Pages: iv, 18, A1 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 52
    Language: English
    Note: CONTENTS Preface Summary Introduction Definition of whiteout Scope of this study Instrumentation and observations Location of project: Fog particle measurements Atmospheric humidity measurements Visibility measurements Air temperature measurements Radiation measurements Atmospheric nuclei Observations of fog whiteout Conditions prior to onset of whiteout Conditions at time of arrival and during whiteout Micro-structure of fog whiteout Analysis of moisture balance during two selected cases Synoptic situation for case 1 Synoptic situation for case 2 Computations Attempts at fog whiteout dispersal References Appendix A - Freezing nuclei observations Appendix B - Absolute humidity gradient data
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  • 28
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-56
    In: Research report / Cold Regions Research and Engineering Laboratory, 56
    Description / Table of Contents: Summary: The results of laboratory creep tests in a shear apparatus at -5°C on 2 x2 x 3/8 in. samples of commercial ice, artificial single crystals, and 6 types of ice from the Greenland Ice Cap, at shear stresses of about 0.5-3 kg/cm^2 are reported. Some uniaxial tests were made at stresses from 6-28 kg/cm^2 to supplement the shear tests. Creep data could usually be represented approximately by one or more linear sections on a log-deformation vs log-time plot. The linear sections of the double logarithmic curve imply a creep curve of the form ε=ct^m where ε is the strain. For all samples tested, except single crystals sheared in easy glide, m averaged 0. 5 for shear deformations up to about 1%, and approached unity for more deformation. For single ice crystals oriented for easy glide, m averaged 1.7, implying a strain softening. Single crystals oriented for hard glide behaved similarly to polycrystals, indicating a rate-controlling process such as dislocation climb. For all but single easy-glide crystals, the minimum creep rate was tangent to the deformation curve at the end of the experiment. Creep rates for single easy-glide crystals were several hundred times larger than for the other crystals, the flow laws being similar.
    Type of Medium: Series available for loan
    Pages: iv, 7 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 56
    Language: English
    Note: CONTENTS Preface Summary Introduction Types of ice Experiments Results Creep curves Flow law References
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  • 29
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-55
    In: Research report / Cold Regions Research and Engineering Laboratory, 55
    Description / Table of Contents: Summary: Experiments were performed to investigate the processes involved in the formation of sorted patterns which occur naturally in unconsolidated sandy gravel deposits covering the edge of the ice cap southeast of Thule, northwest Greenland. Four different glacier ice surfaces were covered with various thicknesses of sandy gravel in order to observe the effect of differential melting on the formation of sorted patterns. The different stages of pattern formation were recorded by photographs taken at 7-day intervals. A thin gravel cover of 2 in. allowed more rapid melting than did a cover of 6 in., with the result that depressions and mounds were formed. Coarse particles were segregated in the depressions by natural sorting of the various particle sizes when set in motion by differential melting and resulting uneven collapse of the gravel cover. The sorting produced well-developed stone rings in three of the areas, caused directly by the differential insulation provided by the gravel cover. In the fourth area a uniform gravel cover over a smooth ice surface produced no sorted nets, although a poorly developed stone stripe was formed in a melt-stream channel. A stone stripe was also formed in a stream channel cut into the ice along the edge of the test area. This stripe was composed of coarse particles which rolled down from the better insulated heights of the test area. It is therefore possible that sorted nets and stripes occurring naturally in the moraine deposits on the edge of the ice cap could have been formed by mechanical sorting induced by differential melting of the ice under a non-uniform layer of sandy gravel.
    Type of Medium: Series available for loan
    Pages: iv, 15 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 55
    Language: English
    Note: CONTENTS Preface Summary Introduction Procedure Preparation of test plots Measurements of ice and gravel surfaces Composition of the gravel covering Results Sorting in a smooth layer of sandy gravel over an uneven ice surface Sorting in a uniform layer of sandy gravel over depressions in the ice surface Sorting in a uniform layer of sandy gravel over a uniform ice surface Sorting in a non-uniform layer of sandy gravel over a uniform ice surface Discussion and recommendations Conclusions References
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  • 30
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-19
    In: Research report / Cold Regions Research and Engineering Laboratory, 19
    Description / Table of Contents: Abstract: Measurements were made of global and net radiation between 6 July and 7 August 1955 at a site on the Greenland Ice Cap located near 78°N latitude and at an elevation of 6800 ft. Snow-surface temperatures during this period were below 0°C and mean cloudiness was 0.7. Total incident global radiation measured during the 33-day period amounted to 20,628 ?? of which only 3059 ??, or about 15%, were absorbed by the snow cover. Most of the absorbed global radiation was re-emitted as long-wave radiation, so the net gain during the observation period amounted to not more than 7.6 ??/day. Diffuse sky radiation amounted to only 19% of all incoming global radiation measured at the ice-cap research site. In the temperate zone, diffuse sky radiation amounts to 30% or more of the incoming radiation. The small amount of diffuse sky radiation indicates low atmospheric turbidity in this polar climatic zone. Incident global radiation was reduced by 6% in the presence of a 0.5 cloud cover. Under full overcast conditions the snow surface received 65% of the global radiation measured on clear days. In the temperate zone as little as 30% of global radiation reaches the earth under full cloud cover. The large amount of global radiation received in the Arctic under full cloud cover is the primary cause of one form of arctic white-out. Accompanying the small decrease in global radiation caused by cloudiness is a large decrease in effective outgoing long-wave radiation, with an increase in the net radiation balance. This condition contributes to a greater potential ablation of the snow and ice cover during cloudy seasons. The long-wave radiation balance at this site on the ice cap was always negative during the period covered by this study. Errors associated with the measurement of solar radiation at the low sun angles which prevailed at the research site were found to be about -3%. No correction was applied to the basic data, however, since there were insufficient data to establish the consistency of this error over the period of observation. During periods of blowing and drifting snow, 6% more global radiation was measured at 1.25 m above the snow surface than at 5.7 m elevation. The increase may be due to multiple reflection within the layer of blowing snow. The atmospheric transmission coefficient at the ice-cap site was found to be 0.968. This high value was associated with the low atmospheric turbidity. The heat balance of the snow cover as computed from the radiation measurements and a temperature profile in the snow was found to be 7.6 ??/day at the ice-cap site. This is a negligible heat gain when compared with the 400 ??/day gain by a spring snow pack in the Sierra Nevada of California. For the entire season when the sun is above the horizon, the estimated net gain by the ice cap is 1000 ??, no more than a 2-1/2-day heat supply used in melting the snow of the High Sierra. Some measurements made with a silicon solar battery similar to those developed by the Bell Telephone Laboratories indicate that it may have a significantly higher efficiency on the ice cap than in the more temperate zone. Verification of this apparent increase in efficiency and the causes for it require further study of the performance of the p-n junction cells in the Arctic.
    Type of Medium: Series available for loan
    Pages: iv, 20, [2] Seiten , Illustrationen , 27 cm
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 19
    Language: English
    Note: CONTENTS I. Introduction II. Instrumentation Recording of data III. Results Global radiation Albedo of snow Diffuse sky radiation Effect of clouds on radiation Atmospheric and terrestrial radiation Effect of low sun angle on measured radiation Global radiation gradient Atmospheric transmission coefficient Heat balance of snow cover Applied use of solar energy References. Appendix
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  • 31
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-30
    In: Research report / Cold Regions Research and Engineering Laboratory, 30
    Description / Table of Contents: Summary: Deformations occurring in a tunnel, two trenches, and a 30 m deep pit excavated in the Greenland névé in the summer of 1954 have been measured over a period of 2 years. The experimental results indicate that closure rates increase with lateral distance from a restraining boundary up to distances of about 1 m. At larger distances, the effect of the boundary is not appreciable. Closure rates for deep excavations are not found to be strongly depth-dependent. This is due to a roughly parallel increase of viscosity and pressure with depth. Vertical compaction results from the pit agree well with those calculated from the depth-density relation using Sorge's Law. A theoretical calculation for the tunnel and pit closure, which is a modification of existing theories for the deformation of an elastic, compressible, thick-walled cylinder, is in fair agreement with the observed deformations. From this agreement it appears that the flow behavior of the névé can be described on the basis of a Newtonian viscosity. The trench closure is described as the-squeezing out of horizontal layers, fixed at some distance from the trench, and modified only slightly by the drag of neighboring layers. Measurements will be continued during future summers.
    Type of Medium: Series available for loan
    Pages: iv, 14 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 30
    Language: English
    Note: CONTENTS Preface Summary Introduction Measurements and results Tunnel North-south trench East-west trench Deep pit Theoretical development Sorge's Law Deformation of acylindrical tunnel in a viscous compressible medium Discussion Tunnel Trenches Deep pit References Appendix
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  • 32
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-31
    In: Research report / Cold Regions Research and Engineering Laboratory, 31
    Description / Table of Contents: Summary: Studies were conducted on 58 snow-ice beams (7.5 cm wide, 10.0 cm high, and 56.0 cm long) ranging in density from 0.621 - 0.719 g/cm^3 under varying loads, at uniform loading rates (except for 23 beams which were tested with repeated loading), and at a constant temperature of -5 ± 0.5°C. All beams were tested to failure. The modulus of elasticity of the beams increased with density and loading rate. The modulus of elasticity ranged from 1.35 x 10^4 to 2.22x 10^4 kg/cm^2 for densities of 0.621 - 719 g/cm^3 respectively. A variation in the relative time of deflection from 42 - 23 sec/0.0200 cm gave a variation in the modulus of elasticity from 1.22 x 10^4 to 1.42 x 10^4 kg/cm^2. The modulus of rupture was roughly a linear function of density, increasing from 7.79 - 11.54 kg/cm^2 with density. Failure of the beams was sudden, with a conchoidal fracture occurring in the middle third of the span, and appeared to be a combination of shear and flexure.
    Type of Medium: Series available for loan
    Pages: iv, 9, A4, B10 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 31
    Language: English
    Note: CONTENTS Preface Summary Introduction Method Procedure Test results Tests conducted Data and calculations Discussion of results References Appendix A. Drawings of apparatus Appendix B. Load-deflection and time-deflection curves for snow beams of various densities
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    Call number: AWI G4-22-94988
    Type of Medium: Monograph available for loan
    Pages: 130 Seiten , Illustrationen , Errata , 28 cm
    Series Statement: Annual progress report / Sanitary Engineering Research Laboratory, University of California 1
    Language: English
    Note: TABLE OF CONTENTS I INTRODUCTION II SUMMARY OF METHODS OF GROUND WATER DETECTION A. Geophysical Methods Gravimetric Method Magnetic Method Seismic Method Electrical Resistivity Method Electrical, Radioactive and Temperature Logging Methods B. Tracer Methods Dyes as Ground Water Tracers Tracers Detected by Chemical Determinations Radioactive Tracers III LABORATORY AND FIELD STUDIES OF GROUND WATER TRACERS Ion Exchange in Soils Lysimeter Studies of Fluorescein, Chloride and Iodine-131 Comparison of Stable and Radioactive Calcium Tritium Studies Injection Well Studies of Fluorescein, Dextrose, and Iodine-131 IV CONCLUSIONS AND RECOMMENDATIONS A. Geophysical Methods B. Tracer Methods V ABSTRACT OF LITERATURE PERTAINING TO GROUND WATER DETECTION A. Geophysical Methods B . Tracer Methods
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    Monograph available for loan
    Monograph available for loan
    Waterloo, Ont. : University of Waterloo
    Call number: AWI G3-23-95003
    Type of Medium: Monograph available for loan
    Pages: xviii, 181 Seiten , Illustrationen , 28 cm
    Language: English
    Note: Masterarbeit, University of Waterloo, 1995 , TABLE OF CONTENTS TITLE PAGE AUTHOR'S DECLARATION BORROWER'S PAGE ABSTRACT ACKNOWLEDGEMENTS DEDICATION LIST OF TABLES LIST OF FIGURES LIST OF PLATES CHAPTER 1 INTRODUCTION 1.1 INTRODUCTION 1.2 PURPOSE 1.3 OBJECTIVES CHAPTER 2 LITERATURE REVIEW 2.1 INTRODUCTION 2.2 THERMAL REGIME 2.3 INHERENT PHYSICAL CHARACTERISTICS 2.4 HYDROLOGICAL REGIME 2.5 INTEGRATED STUDIES 2.6 SUMMARY CHAPTER 3 STUDY SITE LOCATION 3.1 INTRODUCTION 3.2 REGIONAL CLIMATE 3.3 GEOLOGY 3.4 VEGETATION 3.5 COLOUR LAKE BASIN CHAPTER4 INHERENT PHYSICAL CHARACTERISTICS OF THE ACTIVE LAYER 4.1 INTRODUCTION 4.2 METHODS 4.3 RESULTS 4.4 DISCUSSION 4.4.1 SS, EIF and GC Transects 4.4.2 Permafrost Transects 4.5 SUMMARY CHAPTER 5 THERMAL CHARACTERISTICS OF THE ACTIVE LAYER 5.1 lNTRODUCTION 5.2 THEORY 5.2.1 Energy Balance 5.2.2 Active Layer Development 5.3 METHODS 5.3.1 Energy Balance 5.3.2 Ground Thermal Regime 5.3.3 Predicting of Active Layer Depths 5.4 RESULTS 5.4.1 Energy Balance 5.4.2 Ground Thermal Regime 5.4.3 Predicting Active Layer Depths 5.5 DISCUSSION 5.S.1 Energy Balance 5.5.2 Ground Temperatures and Ground Heat Flux 5.5.3 Predicting Active Layer Depths 5.6 SUMMARY CHAPTER 6 HYDROLOGICAL CHARACTERISTICS OF THE ACTIVE LAYER 6.1 INTRODUCTION 6.2 THEORY 6.2.1 Moisture Distribution 6.2.2 Maximum Storage within the Active Layer 6.3 METHODS 6.3.1 Moisture Profiles Using TDR 6.3.2 Precipitation and Evaporation 6.3.3 Changes in Water Storage in the Active Layer 6.3.4 Maximum Water Storage in the Active Layer 6.4 RESULTS 6.4.1 Moisture Distribution 6.4.1.1 Water Content Peaks 6.4.1.2 Apparent Unfrozen Water Content 6.4.1.3 Temporal Trends of a Typical Moisture Profile 6.4.1.4 Deviations from a Typical Site 6.4.1.5 Moisture Distribution Along a Hillslope 6.4.2 Precipitation Infiltration 6.4.3. Water Storage 6.5 DISCUSSION 6.5.1 Effect of Hydrology on Active Layer Development 6.5.1.1 Precipitation 6.5.1.2 Ice and Water Content 6.5.1.3 Seasonal Changes in Soil Moisture Distribution 6.5.2 Effect of Active Layer on Hydrology 6.5.2. 1 Impermeable Boundary 6.5.2.2 Subsurface Ponding 6.5.2.3 Permafrost/Active Layer Boundary Topography 6.5.2.4 Effect of Active Layer Hydrology on Surface Water 6.6 SUMMARY CHAPTER 7 CLIMATE CHANGE AND ACTIVE LAYER DEVELOPMENT 7.1 INTRODUCTION 7.2 SUMMARY 7.3 CLIMATE CHANGE 7.3.1 Introduction 7.3.2 Increase of Temperature 7.3.3 Changing Precipitation 7.4 REMOTE SENSING 7.5 RECOMMENDATION FOR FuRTHER RESEARCH APPENDIX A PHYSICAL CHARACTERISTICS APPENDIX A.1: ACTIVE LAYER DEPTHS APPENDIX B THERMAL CHARACTERISTICS APPENDIX B.1: BASE CAMP METEOROLOGICAL STATION OBSERVATIONS APPENDIX B.2: DAILY ENERGY-BALANCE SUMMARY APPENDIX B.3: MONTHLY AVERAGES FROM THE DESERT RESEARCH INSTITUTE METEOROLOGICAL STATION APPENDIX B.4: EXAMPLE OF DIURNAL FLUCTUATIONS IN TEMPERATURE AND ENERGY BALANCE COMPONENTS APPENDIX B.5: SOIL TEMPERATURES AT THE INTENSIVE STUDY SITES APPENDIX B.6: ACCUMULATED THAWING DEGREE DAYS APPENDIX B.7: CURVE FOR FENWALL THERMISTORS APPENDIX B.8: RELATIONSHIP BETWEEN √ADDT AND √TT APPENDIX C HYDROLOGICAL CHARACTERISTICS APPENDIX C.1: VOLUMETRIC WATER CONTENT VALUES APPENDIX C.2: POTENTIAL INFILTRATION REFERENCES , Englisch
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  • 35
    Monograph available for loan
    Monograph available for loan
    Sankt.Peterburg : Izdatel'stvo "Mir i Sem'ja 95", Glavnoe Agentstvo Vozdušnych Soobščenij Rossijskoj Federacii
    Call number: AWI Bio-23-95317
    Type of Medium: Monograph available for loan
    Pages: 119 Seiten , Illustrationen , 1 Beilage
    ISBN: 5-90016-27-1
    Language: Russian , English , French
    Note: Zum Teil in kyrillischer Schrift. , Text in russischer, englischer und französischer Sprache
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  • 36
    Monograph available for loan
    Monograph available for loan
    Cambridge : University Press
    Call number: AWI G1-19-92304
    Type of Medium: Monograph available for loan
    Pages: XVI, 420 Seiten , Illustrationen
    Edition: Fourth edition
    Language: English
    Note: Contents: I The mechanical properties of rocks. - II The theory of elastic waves. - III Observational seismology. - IV The theory of the figures of the earth and moon. - V The figures of the earth and moon. Discussion of observations. - VI Stress-differences in the earth. - VII The variation of latitude and the bodily tide. - VIII Tidal friction. - IX The age of the earth. - X The thermal history of the earth. - XI The origin of the earth's surface features. - XII Special problems. - Appendices. - A Critical stress-difference. - B The straining of a uniform sphere. - C Castigliano's principle. - D Cooling of a sphere. - E Long-period tides. - Notes. - Bibliography. - Index.
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  • 37
    Monograph available for loan
    Monograph available for loan
    New York [u.a.] : Springer
    Call number: PIK M 311-18-91756
    Type of Medium: Monograph available for loan
    Pages: XIV, 272 Seiten , Diagramme , 24 cm
    ISBN: 0387983724 , 0387945237
    Series Statement: Springer study edition
    Language: English
    Note: Contents: Front Matter ; Introduction ; Reconstruction of Phase Space ; Choosing Time Delays ; Choosing the Dimension of Reconstructed Phase Space ; Invariants of the Motion ; Modeling Chaos ; Signal Separation ; Control and Chaos ; Synchronization of Chaotic Systems ; Other Example Systems ; Estimating in Chaos: Cramér-Rao Bounds ; Summary and Conclusions
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  • 38
    facet.materialart.13
    facet.materialart.13
    [Philadelphia] : American Meteor Society
    Call number: MOP S 7298
    In: Meteoritics
    Type of Medium: 13
    Pages: Seite 366-385 , Tabellen
    Edition: Sonderdruck reprinted from Meteoritics Vol. 1, No. 3, 1955
    Series Statement: Meteoritics Vol. 1, No. 3
    Language: English
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  • 39
    facet.materialart.12
    Ottawa : Geological Survey of Canada
    Associated volumes
    Call number: https://doi.org/10.4095/207658
    In: Miscellaneous Report / Geological Survey of Canada ; 59, 59
    Type of Medium: 12
    Pages: 173 S , überw. Kt
    ISBN: 066059871X
    Series Statement: Miscellaneous report / Geological Survey of Canada 59
    Language: English , French
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  • 40
    Monograph available for loan
    Monograph available for loan
    London : Academic Press
    Call number: AWI Bio-19-92166
    Type of Medium: Monograph available for loan
    Pages: 67 Seiten , Illustrationen
    Series Statement: Estuarine coastal and shelf science Vol. 46, Suppl. A
    Language: English
    Note: Contents: Introduction / P. J. le B. Williams. - The management and behaviour of the Mesocosms / P. J. le B. Williams and J. K. Egge. - Evolution of phytoplankton pigments in Mesocosm experiments / R. G. Barlow, R. F. C. Mantoura, D. G. Cummings, D. W. Pond and R. P. Harris. - Ribulose-1,5-bisphosphate Carboxylase/oxygenase (RubisCO) gene expression and photosynthetic activity in nutrient-enriched Mesocosm experiments / M. Wyman, J. T. Davies, K. Weston, D. W. Crawford and D. A. Purdie. - Bacterial response to blooms dominated by diatoms and Emiliania huxleyi in nutrient-enriched Mesocosms / R. Sanders and D. A. Purdie. - Population dynamics of phytoplankton and viruses in a phosphate-limited Mesocosm and their effect on DMSP and DMS production / W. H. Wilson, S. Turner and N. H. Mann. - Microplanktonic polyunsaturated fatty acid markers: a Mesocosm trial / D. W. Pond, M. V. Bell, R. P. Harris and J. R. Sargent.
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  • 41
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred Wegener Institut for Polar and Marine Research
    Associated volumes
    Call number: ZSP-994(1994/1995)
    In: Zweijahresbericht / Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung, 1994/1995
    Type of Medium: Series available for loan
    Pages: 275 Seiten , Illustrationen
    ISSN: 0940-4546 , 1618-3703
    Series Statement: Zweijahresbericht / Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung 1994/1995
    Language: English
    Note: Contents 1. Introductory overview 2. Selected research topics Food availability and microbial activity on the continental slope: from the Siberian shelf to the Arctic basin (Boetius, Damm, Nothig) Ecology of summer sea ice (Cieitz, Kukert, Riebesell, Rutgers v. d. Loeff, Crossmann, Dieckmann) Temperature physiology of marine invertebrates and fish (Hardewig, Sartoris, Sommer, van Dijk, Zielinski, Partner) The 'multistoried' habitat on the Antarctic sea floor (Cutt) The near-surface air flow at Neumayer Station (Handorf) Simulation of atmospheric climate processes over the Arctic (Dethloff, Rinke) Coordinated ozone soundings for determination of ozone depletion rates in the Arctic and sub-Arctic winter (Rex, van der Cathen) Sunshine Simulation (Tüg) Ice-free areas in pack ice - The Northeast Water Polynya in the Greenland Sea (Budeus, Schneider, Kattner, Hirche) Exchange of deep water across the Greenland-Iceland-Scotland sills (Beckmann, Doscher) The large-scale distribution of inorganic carbon in the Atlantic sector of the Antarctic (Hoppema, Fahrbach) Modelling the circulation under the Filchner-Ronne Ice Shelf (Determann, Cerdes, Crosfeld) Filchner-Ronne Ice Shelf Programme (FRISP) (Oerter, Mayer, Hempel, Lambrecht, Nixdorf) Plate tectonics in the Bellingshausen Sea, Southeast Pacific (Cohl, Nitsche, Miller) Small-scale structures from multibeam bathymetry in the Weddell Sea (Schenke, Kuhn) Radiolarians as a paleothermometer in the Southern Ocean - reconstruction of climatic changes (Abelmann, Brathauer, Sieger) Sibiria: Region of origin for Arctic sediments (Rachold, Hoops, Hubberten) Late and postglacial vegetation and climate history of northern Central Siberia (Hahne, Harwart) SEPAN (Sediment and Paleoclimate Data Network) (Diepenbroek, Crobe, Reinke, Schlitzer, Sieger, Siems) 3. Reports by the Scientific Sections 3.1 Oceanic and atmospheric processes in polar regions 3.2 Modelling of ocean processes and circulation 3.3 Marine physics and instrument development 3.4 The bedrock of the polar regions in the Atlantic and the surrounding continental margin 3.5 Glaciology 3.6 Marine geology 3. 7 Marine ecosystem research and ecophysiology 3.8 Biological oceanography 3.9 Ceoscientific studies in ice-margin regions 3.10 Physics and chemistry of the polar atmosphere 3.11 Sea-ice research 3.12 The oceanic carbon cycle 4. Large equipment, expeditions and land-based stations 4.1 'Polarstern' 4.2 'Victor Hensen' 4.3 Polar Aircraft 4.4 Land Expeditions 4.5 Neumayer Station 4.6 Dallmannn Laboratory 4.7 Koldewey Station 4.8 Other small stations 5. Logistics 6. International and National Cooperation 6.1 National Cooperation 6.2 International Cooperation 7. Central Facilities 7.1 Computer Centre 7.2 Libraries 7.3 Public Relations 8. Personnel Structure and Budget Trends 8.1 Staff plan 8.2 Budget 8.3 On the Situation of Women at the AWl 9. Publications 9.1 Publications of the Institute 9.2 Publications of the Staff Annex I. Staff II. Scientific Events Ill. Completed Theses and Dissertations IV 'Polarstern' Expeditions , Inhaltsverzeichnis 1. Einleitende Übersicht 2. Ausgewählte Forschungsthemen Vom sibirischen Schelf zur arktischen Tiefsee: Nahrungsverfügbarkeit und mikrobielle Aktivität am Meeresboden (Boetius, Damm, Nöthig) Zur Ökologie des sommerlichen Meereises (Gleitz, Kukert, Riebesell, Rutgers v. d. Loeff, Grossmann, Dieckmann) Temperaturphysiologie von marinen Invertebraten und Fischen (Hardewig, Sartoris, Sommer, van Dijk, Zielinski, Pörtner) Der "mehrstöckige" Lebensraum am Meeresboden der Antarktis (Gutt) Die bodennahe Luftströmung an der Neumayer-Station (Handorf) Die Simulation atmosphärischer Klimaprozesse über der Arktis (Dethloff, Rinke) Koordinierte Ozonsondierungen zur Bestimmung des Ozonabbaus im arktischen und subarktischen Winter (Rex, von der Gathen) Der Sonnenscheinsimulator (Tüg) Eisfreie Stellen im Packeis - Die Nordostwasser-Polynja in der Grönlandsee (Budeus, Schneider, Kattner, Hirche) Der Austausch von Tiefenwasser über die untermeerischen Schwellen zwischen Grönland und Schottland (Beckmann, Döscher) Die großräumige Verteilung des anorganischen Kohlenstoffs im atlantischen Sektor der Antarktis (Hoppema, Fahrbach) Modeliierung der Ozeanzirkulation unter dem Filchner-Ronne-Schelfeis (Determann, Gerdes, Grosfeld) Das Filchner- Ronne-Schelfeis-Projekt (Oerter, Mayer, Hempel, Lambrecht, Nixdorf) Die Plattentektonik des Bellingshausenmeeres (Gohl, Nitsche, Miller) Entdeckung neuer Strukturen auf dem Meeresboden des südlichen Weddellmeeres (Schenke, Kuhn) Radiolarien als Paläothermometer im Südpolarmeer (Abelmann, Brathauer, Sieger) Sibirien: Ursprungsregion arktischer Sedimente (Rachold, Hoops, Hubberten) Spät- und postglaziale Vegetations- und Klimageschichte des nördlichen Mittelsibiriens (Hahne, Harwart) Informationssystem SEPAN (Sediment and Paleoclimate Data Network) (Diepenbroek, Grobe, Reinke, Schlitzer, Sieger, Siems) 3. Berichte der wissenschaftlichen Arbeitsgruppen 3.1 Ozeanische und atmosphärische Prozesse in den Polargebieten 3.2 Modellierung von Prozessen und Zirkulationssystemen im Ozean 3.3 Meeresphysikalische Messungen und Instrumentenentwicklung 3.4 Der Untergrund der polaren Teile des Atlantik und seiner kontinentalen Umrandung 3.5 Glaziologie 3.6 Meeresgeologie 3.7 Marine Ökosystemforschung und Ökophysiologie (Sektion Biologie I) 3.8 Biologische Meereskunde (Sektion Biologie II) 3.9 Geowissenschaftliche Studien in Eisrandgebieten 3.10 Physik und Chemie der polaren A tmosphäre 3.11 Meereisforschung 3.12 Der Kohlenstoffkreislauf 4. Großgeräte, Expeditionen und Landstationen 4.1 "Polarstern" 4.2 "Victor Hensen" 4.3 Polarflugzeuge 4.4 Landexpeditionen 4.5 Neumayer-Station 4.6 Dallmann-Laboratorium 4.7 Koldewey-Station 4.8 Weitere kleine Stationen 5. Logistik 6. Internationale und nationale Zusammenarbeit 6.1 Nationale Zusammenarbeit 6.2 Internationale Zusammenarbeit 7. Zentrale Einrichtungen 7.1 Rechenzentrum 7.2 Bibliothek 7.3 Presse-und Öffentlichkeitsarbeit 8. Personeller Aufbau und HaushaItsentwicklung 8.1 Personal 8.2 Haushalt 8.3 Bericht der Frauenbeauftragten 9. Veröffentlichungen 9.1 Veröffentlichungen des Instituts 9.2 Veröffentlichungen der Mitarbeiter Anhang I. Personal II. Wissenschaftliche Veranstaltungen III. Abgeschlossene Examensarbeiten IV. "Polarstern"-Expeditionen
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  • 42
    Monograph available for loan
    Monograph available for loan
    Joensuu : European Forest Institute
    Call number: PIK W 510-19-92841
    Type of Medium: Monograph available for loan
    Pages: 19 Seiten , Diagramme
    ISBN: 9529844174
    Series Statement: Working paper / European Forest Institute 6
    Language: English
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  • 43
    Monograph available for loan
    Monograph available for loan
    Joensuu : European Forest Institute
    Call number: PIK W 510-19-92846
    Type of Medium: Monograph available for loan
    Pages: III, 16 Seiten
    Series Statement: Working paper / European Forest Institute 13
    Language: English
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  • 44
    Monograph available for loan
    Monograph available for loan
    Joensuu : European Forest Institute
    Call number: PIK W 510-19-92847
    Type of Medium: Monograph available for loan
    Pages: 46 Seiten , Diagramme, Karten
    Series Statement: Working paper / European Forest Institute 14
    Language: English
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  • 45
    Monograph available for loan
    Monograph available for loan
    Joensuu : European Forest Institute
    Call number: PIK W 510-19-92848
    Type of Medium: Monograph available for loan
    Pages: 65 Seiten
    Series Statement: Working paper / European Forest Institute 15
    Language: English
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  • 46
    Monograph available for loan
    Monograph available for loan
    Boulder, Colo. [u.a.] : Westview Press
    Call number: PIK D 022-03-0300/1
    Description / Table of Contents: pt. 1. Introduction. The need for better theories / Paul A. Sabatier ; The stages approach to the policy process: what has it done? where is it going? / Peter deLeon -- pt. 2. Alternative views of the role of rationality in the policy process. Institutional rational choice: an assessment of the institutional analysis and development framework / Elinor Ostrom ; Ambiguity, time, and multiple streams / Nikolaos Zahariadis -- pt. 3. Frameworks focusing on policy change over fairly long periods. Punctuated-equilibrium theory: explaining stability and change in American policymaking / James L. True, Bryan D. Jones, and Frank R. Baumgartner ; The advocacy coalition framework: an assessment / Paul A. Sabatier and Hank C. Jenkins-Smith -- pt. 4. Frameworks comparing policies across a large number of political systems. Innovation and diffusion models in policy research / Frances Stokes Berry and William D. Berry ; The policy process and large-N comparative studies / William Blomquist -- pt. 5. Conclusions. A comparison of frameworks, theories, and models of policy processes / Edella Schlager ; Fostering the development of policy theory / Paul A. Sabatier
    Type of Medium: Monograph available for loan
    Pages: VIII, 289 S. , Ill. , 24 cm
    ISBN: 0813399858 , 0813399866 (pbk.)
    Series Statement: Theoretical lenses on public policy
    Language: English
    Note: pt. 1. Introduction. The need for better theories / Paul A. Sabatier ; The stages approach to the policy process: what has it done? where is it going? / Peter deLeon -- pt. 2. Alternative views of the role of rationality in the policy process. Institutional rational choice: an assessment of the institutional analysis and development framework / Elinor Ostrom ; Ambiguity, time, and multiple streams / Nikolaos Zahariadis -- pt. 3. Frameworks focusing on policy change over fairly long periods. Punctuated-equilibrium theory: explaining stability and change in American policymaking / James L. True, Bryan D. Jones, and Frank R. Baumgartner ; The advocacy coalition framework: an assessment / Paul A. Sabatier and Hank C. Jenkins-Smith -- pt. 4. Frameworks comparing policies across a large number of political systems. Innovation and diffusion models in policy research / Frances Stokes Berry and William D. Berry ; The policy process and large-N comparative studies / William Blomquist -- pt. 5. Conclusions. A comparison of frameworks, theories, and models of policy processes / Edella Schlager ; Fostering the development of policy theory / Paul A. Sabatier..
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  • 47
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-18
    In: Research report / Cold Regions Research and Engineering Laboratory, 18
    Description / Table of Contents: Summary: Various strength properties of naturally compacted high-density snows, in the density range of from 0.40 to 0.75 g/cm^3, are reported. Test results are given for: unconfined compression; unconfined and confined double shear; ring, flexural, and centrifugal tensile strength; torsional shear; and work of disaggregation. The work of disaggregation per unit volume was related to crushing, tensile, and shear strength at various lateral pressures, using the same empirical relationship. The results of the various tests measuring the tensile strength of the snow compare favorably with each other. An attempt was made to use the direct shear strength results in Coulomb’s equation for the determination of Mohr’s envelope of rupture for snow. These tests yield higher values than those obtained in unconfined compression tests. However, angles of internal friction obtained considering Mohr’s envelope to be straight line seem to agree with measurements taken on an unconfined compression specimen.
    Type of Medium: Series available for loan
    Pages: 19 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 18
    Language: English
    Note: CONTENTS Page Preface Summary Introduction Temperature correction factors Crushing strength Tensile strength · Shear strength Torsional shear strength Work of disaggregation of snow Angle of internal friction and apparent unit cohesion Discussion of results References
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  • 48
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-17
    In: Research report / Cold Regions Research and Engineering Laboratory, 17
    Description / Table of Contents: Summary: The ice-cored moraine which occurs on the margin of the Greenland Ice Cap, east of Thule Air Base, was investigated during the summers of 1954 and 1955. A synthesis of the field data gathered leads to the following conclusions: 1.) The outer zone of the ice margin is composed of stagnant ice which acts as a barrier to movement of mobile ice from the interior. 2.) The mobile ice overrides the barrier zone in a series of high angle imbricate shears. 3.) These shears carry old ground moraine from the subglacial floor toward the surface. 4.) Differential ablation on the surface results in the formation of ice-cored moraine ridges, parallel to the strike of the shear. 5.) Recent stagnation and recession of the ice margin in the Thule area has resulted in the formation of a belt of successive shear moraines. 6.) Geomorphic processes in addition to ablation (particularly wind action) control the surface expression of the shear moraines. 7.) Subglacial topography is the primary control on the trend of both ice edge and moraine ridges. 8.) The complex Thule Ramp shear moraine has resulted from a faster-moving ice mass to the north overriding the Thule Ramp ice. 9.) The prominent ice cliffs are manifestations of erosion by wind and water. 10.) The tunnel in the Thule Ramp ice cliff indicates a former development of shear moraine in the area. 11.) Structural and geomorphic features indicate glacial cycles in the area of both long and short duration. 12.) The shear moraines in the Thule area offer a possible explanation for the mode of ground moraine deposition in some areas of continental glaciation during the late Pleistocene. The work done in 1954 and 1955 was in the nature of a glacial geomorphologic reconnaissance. Intensive study remains to be done, particularly in the Thule Ramp area, on ice structure, movement, and ablation before a complete understanding of both present and past glacial regimes can be reached.
    Type of Medium: Series available for loan
    Pages: vi, 46, [2] Seiten , Illustrationen , 27 cm
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 17
    Language: English
    Note: CONTENTS Introduction I. Physiographic description of study area II. Structure of the marginal zone of the ice cap III. Geomorphologic processes IV. Recent glacial history of the ice margin
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  • 49
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-34
    In: Research report / Cold Regions Research and Engineering Laboratory, 34
    Description / Table of Contents: Summary: The compressive strength of snow cylinders was investigated as a function of age of snow, snow-particle size, and age of the cylinders. The effect of gases such as carbon dioxide, methane, and ammonia on the strength of snow cylinders has also been studied. The experimental results show that the older the snow from which snow cylinders are made, the smaller the compressive strength. The compressive strength of cylinders decreases with the snow particle size. An equation describing the aging curves for snow cylinders is presented. Whereas carbon dioxide and methane in small quantities have no effect on the compressive strength, ammonia appreciably lowers the compressive strength of snow cylinders. All strength measurements were carried out at -10°C.
    Type of Medium: Series available for loan
    Pages: iv, 16 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 34
    Language: English
    Note: CONTENTS Page Preface Summary Introduction Experimental Materials Apparatus and technique Preparation of snow fractions Experimental results Aging of snow cylinders Compressive strength as a function of particle size Mixture of fractions Influence of gases on the compressive strength of snow Discussion References
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  • 50
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-37
    In: Research report / Cold Regions Research and Engineering Laboratory, 37
    Description / Table of Contents: Summary: Laboratory experiments on the air permeability of various screened and natural snows are described, and, results are analyzed to determine whether the parameters obtained from the measurements could be used to define a snow type. The permeability of a snow sample of known porosity (calculated from density) was determined over a wide range of air velocities; the sample was then compacted artificially a few mm, its density was determined, and its permeability measured again. The procedure was used to obtain curves for several densities of the same sample. Air flow appeared laminar for velocities less than 5 cm/sec in fine-grained snow (less than 0.8 mm in diam.), 2 cm/sec in medium-grained snow (0.8-1.2 mm diam.), and 1 cm/sec in larger-grained snow. A formula is presented expressing all of the results obtained under laminar-flow conditions in a single relationship, and an equation for estimating grain size from initial permeability and initial porosity is suggested. Snow conversion tables and a discussion of the effect of varying sample porosity on its permeability are appended.
    Type of Medium: Series available for loan
    Pages: iv, 19, A2, B6 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 37
    Language: English
    Note: CONTENTS Page Preface Summary Introduction Apparatus and method Experimental results and discussion Historical background Range of Darcy's law Effect of porosity on the permeability of snow Bader's equation Conclusion References Appendix I. Snow conversion table: Density to absolute porosity Appendix II. Effect on permeability of varying porosity in the sample Porosity varies with length Porosity varies with cross section
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  • 51
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-41
    In: Research report / Cold Regions Research and Engineering Laboratory, 41
    Description / Table of Contents: Summary: Laboratory experiments on the creep of sifted snow under uniaxial, hydrostatic, and confined-side compressive stresses are described, and the results are discussed on the basis of an additive theory for combined stresses. Stress (4-40 psi) and temperature (-3.6°C to -13.6°C) dependence was investigated for 35 samples (initial density = 0.4 g/cm^3) subjected to uniaxial and hydrostatic stress for 200-sec time increments. Another series of 104 samples (initial densities 0.36-0.63) was subjected to uniaxial, hydrostatic, and confined-side compressive stresses until an arbitrary change in density was reached. In all cases the applied stress ultimately became a shear stress acting between grains, the open structure reacting differently to combined stresses and separate uniaxial stresses. An activation energy of 13,400 cal/mol was obtained from the first group of tests.
    Type of Medium: Series available for loan
    Pages: iv, 12 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 41
    Language: English
    Note: CONTENTS Preface Summary Introduction Experimental General Apparatus Procedure Theoretical relations Additive theory Relationship between tests run for constant change in density and tests for constant time Results and discussion Group I experiments Group II experiments Stress dependence for group II tests Variability Time dependence Activation energy Relations between creep rates under different stress conditions Density dependence Lateral stress for confined-side tests Conclusions References
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  • 52
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-39
    In: Research report / Cold Regions Research and Engineering Laboratory, 39
    Description / Table of Contents: Summary: An analysis of snow-cover density, temperature, and hardness data, measured over a period of several years at five stations in Alaska and six stations in the Canadian Arctic, shows the snow cover in the Canadian Archipelago to be colder, denser, and harder than in the interior of Alaska. A series of nomographs were developed to estimate average monthly snow-cover density from mean monthly air temperature and wind velocity. The nomographs are applicable for the months November through March, for the Alaskan and Canadian area north of 62°N latitude, and for elevations below 1500 ft. A comparison of observed snow-cover densities with those derived from the nomographs indicates that the method will provide a reliable regional estimate of snow-cover density. Studies of the relation between snow-cover temperature and air temperature from November through March disclosed the snow to be on the average from 4°C to 9°C warmer than the air at the Alaskan stations and 4.5°C warmer at the Canadian Archipelago stations. An investigation of snow-cover hardness revealed regional variations similar to that for density. Measured snow hardness during the period of no melting was found to be related to densities between 0.15 and 0.36 g/cm^3.
    Type of Medium: Series available for loan
    Pages: iv, 9 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 39
    Language: English
    Note: CONTENTS Preface Summary Introduction Climatic parameters which may affect arctic snow-cover density Results of study Regional variations in snow-cover density Prediction of average monthly snow-cover density in the arctic from air temperature and wind velocity Comparison of observed snow-cover density with density computed from the nomographs Relation between snow-cover temperature and air temperature Relation between hardness and density of the snow cover References
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  • 53
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-42
    In: Research report / Cold Regions Research and Engineering Laboratory, 42
    Description / Table of Contents: Summary: The results of petrofabric studies in the laboratory on five samples of high-density snow collected in 1954 and 1955 at depths of 8.0, 15.5, 23.0, 34.2, and 46.3 m in a pit at Site 2 are reported. The porosity of the samples, the number of grains/cm^2, the mean number of adjacent grains per grain, the mean grain cross section, the size distribution of grain cross sections, and the orientation of c-axes were determined from enlarged photomicrographs of thin sections, using reflected light and transmitted polarized light. The number of adjacent grains per grain, the ratio of free to occupied grain surface, and the sphericity clearly depended on porosity and on each other. There was no strong relation between these data and the number of grains/cm^2. Hence, the structure of high density snow can be satisfactorily described by the porosity and the number of grains/cm^2 . Conclusions from a two-dimensional thin section can be applied to a spatial sample only if the sample is isotropic by strata.
    Type of Medium: Series available for loan
    Pages: iv, 24 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 42
    Language: English
    Note: CONTENTS Page Preface Summary Introduction Methods of preparation Measurements of structural properties Measurements on homogeneity and isotropy Results Structure data Orientation of c-axes Analysis of the distribution of the orientation of c-axes Preferred directions of the fabric Distribution of grain cross sections Size and shape of the counting areas Interrelations of the structure, data Conclusions Recommendations for further studies References
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  • 54
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-43
    In: Research report / Cold Regions Research and Engineering Laboratory, 43
    Description / Table of Contents: Summary: Charts of mean annual air temperature and precipitation over the ice cap are constructed on the basis of snow-profile studies at 8 locations, data collected for several years after 1953 at two U.S. Air Force weather stations, and records from expeditions since 1930. The warming trend in the Arctic appears to have occurred to a lesser degree on the ice cap, possibly because of the effect of the snow cover. The lowest mean annual temperature in South Greenland is estimated to occur within the area bounded by the 2500 m contour and the -18°C isotherm; mean annual temperature at 2700 is estimated as -20.9°C. In North Greenland, the mean annual temperature at 1700 m is estimated at -22°C. The presence of ice glands in the snow and daily max summer temperatures, estimated from records of coastal stations, indicate a potentially high incidence of melting at about 1300 m elevation and some melting at 1700 m in North Greenland, and melting up to 2700 m in the South. Annual accumulation is 2-3 times as great at 2500 m on the west side of the ice cap as at the crest. South of 66°N, precipitation may be about twice as great on the east side of the crest as in the west.
    Type of Medium: Series available for loan
    Pages: iv, 9 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 43
    Language: English
    Note: CONTENTS Preface Summary Introduction Derivation of mean annual air temperature data Annual accumulation References
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  • 55
    Call number: AWI Bio-21-94361
    Type of Medium: Monograph available for loan
    Pages: 601 Seiten , Illustrationen , 26 cm
    ISBN: 094873745x
    Language: English
    Note: Contents Introduction Acknowledgements Classification of British diatoms New combinations References Description of plates Index to the genera and plates
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  • 56
    Monograph available for loan
    Monograph available for loan
    Berlin, Heidelberg : Springer Berlin Heidelberg
    Call number: M 21.95915
    Description / Table of Contents: Clays and soils are of great importance in various scientific fields, such as agriculture and environmental science, and in mineral deposits. Students and close collaborators of Georges Millot, the eminent French clay sedimentologist, have put together a book with topics ranging from weathering processes and diagenetic evalution of sediments to sedimentary mineral deposits. The book is of interest to practitioners, advanced students as well as teachers in the above fields
    Type of Medium: Monograph available for loan
    Pages: 369 Seiten , Illustrationen
    Edition: Online edition Springer eBook Collection. Earth and Environmental Science
    ISBN: 978-3-642-64443-6
    Language: English
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  • 57
    Call number: AWI P5-23-95010
    Type of Medium: Monograph available for loan
    Pages: VI, 54 Seiten , Illustrationen , 28 cm
    Language: English
    Note: Table of Contents Foreword The Global Context The Arctic in a Global Context The ARCSS Program The Arctic System Science (ARCSS) Program The Scientific Goals of the ARCSS Program ARCSS Objectives Significant Research and Findings of the ARCSS Program ARCSS Program Research Implementation of ARCSS Program Research ARCSS Program Components Paleoenvironmental Studies Greenland Ice Sheet Project Two (GISP2) Paleoclimates of Arctic Lakes and Estuaries (PALE) Ocean-Atmosphere-Ice Interactions (OAII) Land-Atmosphere-Ice Interactions (LAII) Integrative Studies Synthesis, Integration, and Modeling Studies (SIMS) New Initiatives Human Dimensions of the Arctic System (HARC) Russian-American Initiative on Shelf-Land Environments in the Arctic (RAISE) International Collaboration The Future of the ARCSS Program Priorities for the Future Research Questions Integrative Strategies Community Coordination and Integration Coordination and Integration Logistics Support Working with Arctic Residents Community Planning and Science Management ARCSS Committee Science Steering Committees Periodic Meetings of ARCSS Principal Investigators Appendices ARCSS Program Contact Information A History of ARCSS Program Development ARCSS Data Protocol References and Relevant Reports Contributors and Reviewers
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  • 58
    Series available for loan
    Series available for loan
    Ås : Agricultural University of Norway, Department of Soil and Water Sciences
    Call number: AWI G3-23-95008
    Type of Medium: Series available for loan
    Pages: viii, 136 Seiten , Illustrationen , 24 cm
    ISBN: 82-575-0394-0 , 8257503940
    ISSN: 0802-3220
    Series Statement: Doctor scientiarum theses / Norges Landbruskhøgskole 1999:19
    Language: English
    Note: Zugleich: Dissertation, Norges landbrukshøgskole, 1999 , Englisch
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  • 59
    Series available for loan
    Series available for loan
    Uppsala : Swedish University of Agricultural Sciences
    Call number: AWI G3-23-95006
    Description / Table of Contents: Water flow in frozen soils is closely linked to the heat dynamics in the soil-snowatmosphere system. Therefore, a detailed understanding of both thermal and hydraulic processes, as well as the way they are linked is required to quantify and predict the fluxes during freezing and snowmelt. This thesis focuses on different key processes with regard to water dynamics in frozen soils: (a) the heat exchange at the snow surface, (b) the snowmelt infiltration, (c) the freezing characteristic curve, and (d) the frost-induced solute redistribution. Experimental studies were conducted both in the laboratory, using small soil columns and in the field, on soil plots of 4 m2 Oysimeters) and on an arable field of 6 ha. A one-dimensional numerical SV AT-model (SOIL) with a new two-domain concept for water flow in partly frozen soils was applied to these experiments. Measurements of soil water content (total and liquid), soil temperature, groundwater level and solute concentration as continuous time-series provided valuable information about the physical dynamics in the soil during cycles of freezing and thawing. For a shallow or patchy snowcover the simulation of soil frost was very sensitive to the surface energy balance and the snow depth and required accurate precipitation and radiation measurements. The two-domain infiltration model reproduced the field observations better than a single-domain model and gave more flexibility when simulating different field conditions. However, it also increased the model sensitivity. Major sources of uncertainty were the frost-induced water redistribution, the hydraulic conductivity of the initially air-filled pores and the freezing rate of the infiltrating water in the frozen soil. Accurate measurements of soil hydraulic properties were essential for calibrating the model for new soils. Further development of the model will have to include a more sophisticated description of the snow processes and the solute transport in order to be able to address key environmental problems.
    Type of Medium: Series available for loan
    Pages: Getrennte Zählung , Illustrationen
    ISBN: 9157655049 , 91-576-5504-9
    ISSN: 1401-6249
    Series Statement: Acta Universitatis Agriculturae Sueciae. Agraria 72
    Language: English
    Note: Zugleich: Dissertation, Sveriges Lantbruksuniversitet, Uppsala, 1997 , Contents Frozen soil hydrology Review and practical relevance The complex frozen soil environment Objectives Heat exchange above and within frozen soils Heat exchange at the snow surface Heat transfer through the snow pack Soil freezing characteristic curve Frost-induced solute redistribution Water infiltration and redistribution in frozen soil Experimental work Modelling Model versus measurements Conclusions Ongoing and future work Improved description of the processes at the pore scale Improved description of the snow pack Link to larger-scale models References Acknowledgments , Englisch
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  • 60
    Monograph available for loan
    Monograph available for loan
    Boca Raton, Fla. : CRC Press
    Call number: AWI S1-23-95157
    Type of Medium: Monograph available for loan
    Pages: IX, 812 Seiten , Illustrationen
    Edition: 30th edition
    ISBN: 0849324793 , 0-8493-2479-3
    Language: English
    Note: Table of Contents Chapter 1 Analysis / John S. Robertson, Karen Bolinger, Lawrence M. Glasser, Neil J.A. Sloane, and Rob Gross Chapter 2 Algebra / Brad Wilson, John Michaels, Patrick J. Driscoll, and Rob Gross Chapter 3 Discrete Mathematics / George K. Tzanetopoulos, Jeff Goldberg, Joseph J. Rushanan, and Mel Hausner Chapter 4 Geometry / Ray McLenaghan and Silvio Levy Chapter 5 Continuous Mathematics / Catherine Roberts and Ray McLenaghan Chapter 6 Special Functions / Ahmed I. Zayed, Nicco M. Temme, and Paul Jameson Chapter 7 Probability and Statistics / William C. Rinaman, Christopher Heil, Michael T. Strauss, Michael Mascagni, and Mike Sousa Chapter 8 Scientific Computing / Gary Stanek Chapter 9 Financial Analysis / Daniel Zwillinger Chapter 10 Miscellaneous / Michael T. Strauss, Rob Gross, and Victor J. Katz List of Notations Index
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  • 61
    Call number: AWI G3-23-95336
    In: Miscellaneous Report / Geological Survey of Canada, 64
    Type of Medium: Monograph available for loan
    Pages: 71 Seiten , Illustrationen, Karten
    ISBN: 0660174642 , 0-660-17464-2
    Series Statement: Miscellaneous Report / Geological Survey of Canada 64
    Language: English
    Note: Abstract Résumé Acknowledgments Welcome to Yellowknife Part I: The landscape and the people Geological evolution of the landscape Bedrock geology Surficial geology Climate and vegetation History of Yellowknife From gold to government Significant events Part II: Living with frozen ground Permafrost Regional distribution Permafrost occurrence in Yellowknife Significance of peat Significance of moisture Ice lenses Thaw stable and thaw unstable ground Thaw settlement Frost heave Development Buildings Roads Utilities Thermosyphons Climate change - an uncertain future for permafrost Climate and permafrost history Air temperature trends over the last century Response of air temperatures to doubling of greenhouse gases Effect of climate warming on permafrost in Yellowknife Impacts of climate warming Part III: Guide to field stops Introduction The Capital Tour - Capital Site to Bowling Green building Stop 1. The Capital Site - a profusion of peat Stop 2. Legislative Assembly - design with nature Stop 3. Legislative Assembly roadway - perils of paving peat Stop 4. Walking path - tipping trails Stop 5. Legislative Assembly parking lot - preserving permafrost Stop 6. Frame Lake - Yellowknife's aquatic centrepiece Stop 7. National Defence building - seeking solid ground Stop 8. Visitors Centre - rocking and rolling Stop 9. 49 Street thermosyphons - keeping it cool Stop 10. Bowling Green building - swallowing sidewalks The City Tour - 49 Avenue to Niven Lake Stop 11. 49 and 49 intersection - rolling roadways Stop 12. 49 Avenue - sagging sidewalks Stop 13. Downtown Yellowknife - safe on sand Stop 14. Gold Range Hotel - making things work Stop 15. Centre Square Mall - stemming shifting sands Stop 16. Boston Pizza - fast food on a slab Stop 17. Royal Oak Mines Inc. houses - half a century later Stop 18. 52 Avenue - up, up, and ... away Stop 19. 49 Street hill - leaving good ground Stop 20. 54 Avenue - frozen dangers underfoot Stop 21. Rockcliffe Apartments - creeping crawl space Stop 22. School Draw subdivision - houses on the move Stop 23. School Draw Park - from basements to basketballs Stop 24. Rock outcrop - on the shores of glacial Lake McConnell Stop 25. Detah ice road - crystal highway Stop 26. Old Town - doing things the old-fashioned way Stop 27. Franklin Avenue - whither frozen ground? Stop 28. Fritz Theil Park - from dump to diamond I Stop 29. Old sewage line - pipes and peat Stop 30. Niven Lake - a subarctic oasis I Part IV: The Niven Lake Trail Introduction Stop 1. A biological magnet for waterbirds Stop 2. The land of little sticks Stop 3. The wonder of wetlands Stop 4. Niven Lake -urban oasis for wildlife Stop 5. Peat, beautiful peat Stop 6. Honolulu north? Stop 7. Home sweet home -all year round Stop 8. Those mud-slinging, bug-poking shorebirds Glossary of terms Selected references List of field guides for Yellowknife
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  • 62
    Monograph available for loan
    Monograph available for loan
    Cambridge : Cambridge Univ. Press
    Call number: M 98.0484
    Type of Medium: Monograph available for loan
    Pages: xiv, 273 S.
    ISBN: 0521561051
    Series Statement: Cambridge solid state science series
    Classification:
    C.5.2.
    Language: English
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  • 63
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : Cambridge Univ. Press
    Call number: 19/M 98.0482 ; AWI S1-98-0189
    Type of Medium: Monograph available for loan
    Pages: xix, 1008 S.
    ISBN: 052155506X
    Classification:
    C.1.9.
    Language: English
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  • 64
    Call number: S 91.0379(6)
    In: Hallesches Jahrbuch für Geowissenschaften. Reihe B, Geologie, Paläontologie, Mineralogie. Beiheft
    Type of Medium: Series available for loan
    Pages: 250 S.
    Series Statement: Hallesches Jahrbuch für Geowissenschaften. Reihe B, Geologie, Paläontologie, Mineralogie : Beiheft 6
    Classification:
    Historical Geology
    Language: English
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  • 65
    Monograph available for loan
    Monograph available for loan
    Stuttgart [u.a.] : Teubner
    Associated volumes
    Call number: 19/M 98.0498
    In: Advances in numerical mathematics
    Type of Medium: Monograph available for loan
    Pages: VIII, 508 S.
    ISBN: 0471967939
    Series Statement: Advances in numerical mathematics
    Classification:
    C.1.8.
    Language: English
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  • 66
    Call number: AR 98/20
    Classification:
    Geochemistry
    Language: English
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  • 67
    Call number: AR 98/25
    Classification:
    Deposits
    Language: English
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  • 68
    Monograph available for loan
    Monograph available for loan
    Naples : International Institute Stop Disasters
    Associated volumes
    Call number: AR 98/33
    In: Stop Disasters
    Type of Medium: Monograph available for loan
    Classification:
    B.1.4.
    Language: English
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  • 69
    Monograph available for loan
    Monograph available for loan
    Potsdam : GeoForschungsZentrum
    Associated volumes
    Call number: 21/STR 98/14 ; 21/STR 98/14(2. Ex.)
    In: Scientific technical report
    Type of Medium: Monograph available for loan
    Pages: 359 S. : graph. Darst., Kt.
    Series Statement: Scientific Technical Report / Geoforschungszentrum Potsdam 98/14
    Classification:
    Tectonics
    Language: English
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  • 70
    Call number: S 99.0139(228)
    In: Wissenschaftliche Arbeiten der Fachrichtung Vermessungswesen der Universität Hannover
    Type of Medium: Series available for loan
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Vermessungswesen der Universität Hannover 228
    Language: English
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  • 71
    Call number: S 97.0506(490)
    In: Forschungsbericht
    Type of Medium: Series available for loan
    Pages: 86 S.
    ISBN: 393185048X
    Series Statement: DGMK-Forschungsbericht 490
    Classification:
    Deposits
    Language: English
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  • 72
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    Monograph available for loan
    Potsdam
    Associated volumes
    Call number: AR 98/35
    In: International IDNDR-Conference on Early Warning Systems for the Reduction on Natural Disasters
    Type of Medium: Monograph available for loan
    Pages: 73 S.
    Classification:
    A.0.6.
    Language: English
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  • 73
    Call number: 4/M 98.0541
    In: Lecture notes in earth sciences
    Type of Medium: Monograph available for loan
    Pages: X, 191 S.
    ISBN: 3540650067
    ISSN: 0930-0317
    Series Statement: Lecture notes in earth sciences 80
    Classification:
    Geophysical Exploration, Geophysical Prospecting
    Language: English
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  • 74
    Call number: 21/AR 19.92225
    Type of Medium: GFZ publications
    Pages: circa 70 (verschiedene Seitenzählungen) , Illustrationen
    Language: English
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  • 75
    Monograph available for loan
    Monograph available for loan
    Joensuu : European Forest Institute
    Call number: PIK W 510-19-92851
    Type of Medium: Monograph available for loan
    Pages: 44 Seiten , Diagramme
    ISBN: 952984459X
    Series Statement: Working paper / European Forest Institute 17
    Language: English
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  • 76
    Call number: PIK W 510-19-92853
    Type of Medium: Monograph available for loan
    Pages: 266 Seiten , Karten
    ISBN: 9529844646
    Series Statement: Working paper / European Forest Institute 20
    Language: English
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  • 77
    Monograph available for loan
    Monograph available for loan
    Joensuu : European Forest Institute
    Call number: PIK W 510-19-92839
    Type of Medium: Monograph available for loan
    Pages: 114, 4 Seiten , Diagramme
    ISBN: 9529844042
    Series Statement: Working paper / European Forest Institute 5
    Language: English
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  • 78
    Call number: S 99.0056(97/5)
    In: Terra nostra
    Type of Medium: Monograph available for loan
    Pages: 222 Seiten , Graphiken
    Series Statement: Terra nostra 97/5
    Language: English , German
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  • 79
    Monograph available for loan
    Monograph available for loan
    Madison, Wis. : University of Wisconsin Press
    Call number: IASS 20.94073
    Type of Medium: Monograph available for loan
    Pages: XIV, 265 S , graph. Darst , 24 cm
    ISBN: 0299144844 , 0299144801
    Language: English
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  • 80
    Call number: M 19.92948
    Type of Medium: Dissertations
    Pages: X, 167 Seiten , Illustrationen
    ISBN: 90-9010069-5
    Language: English
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  • 81
    Monograph available for loan
    Monograph available for loan
    Stanford, Calif. : Stanford Univ. Press
    Call number: IASS 22.94829
    Type of Medium: Monograph available for loan
    Pages: X, 325 S. , Ill.
    ISBN: 0804727864 , 0804727856 , 9780804727860
    Series Statement: Writing science
    Language: English
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  • 82
    Call number: AWI G3-22-94842-2
    In: Advances in hillslope processes, Volume 2
    In: British Geomorphological Research Group symposia series
    Type of Medium: Monograph available for loan
    Pages: XVI, Seite 688 - 1306 , Illustrationen
    ISBN: 0-471-96774-2
    Series Statement: Advances in hillslope processes 2
    Language: English
    Note: CONTENTS VOLUME 2 Section 6 GULLY DEVELOPMENT PROCESSES Chapter 31 Thresholds of Channel Initiation in Historical and Holocene Times, Southeastern Australia / I. P. Prosser Chapter 32 The Role of Sideslope Gullies in the Production andDelivery of Sediment to Contemporary Terraces, Rambla del Hornillo, Southern Spain / H. Faulkner Chapter 33 Holocene Hillslope Gully Systems in the Howgill Fells, Cumbria / A. M. Harvey Chapter 34 Unsaturated Strength and Preferential Flow as Controls on Gully Head Development / A. J. C. Collison Section 7 SLOPE STABILITY Chapter 35 Landslides and Stability in the Nepalese Middle Hills under Seasonal and Agricultural Land-Use Change Scenarios / K. Wu and J. B. Thornes Chapter 36 Developments in Slope Hydrology-Stability Modelling for Tropical Slopes / M. G. Anderson, A. J. C. Collison, J. Hartshorne, D. M. Lloyd and A. Park Chapter 37 The Mechanics and Landforms of Deep-Seated Landslides / D. Petley Chapter 38 The Assessment and Modelling of Hydrological Failure Conditions of Landslides in the Puriscal Region (Costa Rica) and the Manizales Region (Colombia) / M. T. J. Terlien, P. G. B. De Louw, Th. W. J. Van Asch and R. A. A. Hetterschijt Chapter 39 The Effects of Grass Roots on the Shear Strength of Colluvial Soils in Nepal / C. J. Lawrance, R. J. Rickson and J. E. Clark Chapter 40 Development of an Episodic Landform Change Model based upon the Black Ven Mudslide, 1946-1995 / D. Brunsden and J. H. Chandler Chapter 41 Coastal Slope Development: Temporal and Spatial Periodicity in the Holderness Cliff Recession / J. Pethick Section 8 TROPICAL HILLSLOPE PROCESSES Chapter 42 A New Approach towards the Quantification of Runoff and Eroded Sediment from Bench Terraces in Humid Tropical Steeplands and its Application in South-Central Java, Indonesia / L. A. Bruijnzee/ and W. R. S. Critchley Chapter 43 Hydrological Pathways and Water Chemistry in Amazonian Rain Forests / H. Elsenbeer and A. Lack Chapter 44 Observations on Slope Processes in a Tropical Rain Forest Environment Before and After Forest Plantation Establishment / A. Maimer Chapter 45 Tectonics and Relief in Tropical Forested Mountains: The Gipfelflur Hypothesis Revisited / A. P. Dykes and J. B. Thornes Section 9 SEMI-ARID HILLSLOPE PROCESSES Chapter 46 Hillslope Response to Extreme Storm Events: The Example of the Vaison-La-Romaine Event / J. Wainwright Chapter 47 Geomorphological Implications of Vegetation Patchiness on Semi-arid Slopes / J. Puigdefabregas and G. Sanchez Chapter 48 Runoff and Erosion on Semi-arid Hillslopes / A. J. Parsons, J. Wainwright and A. D. Abrahams Chapter 49 Cuesta Scarp Forms and Processes in Different Attitudinal Belts of the Colorado Plateau as Indicators of Climatic Change / K.-H. Schmidt and P. Meitz Chapter 50 Modelling the Complexity of Land Surface Response to Climatic Variability in Mediterranean Environments / M. Mulligan Section 10 PERIGLACIAL HILLSLOPE PROCESSES Chapter 51 Processes of Thaw-Induced Mass Movement in Non-cohesive Soils: Results of an Instrumented Slope Simulation Experiment / C. Harris and M. C. R. Davies Chapter 52 Paraglacial Slope Adjustment during Recent Deglaciation and Its Implication for Slope Evolution in Formerly Glaciated Environments / C. K. Ballantyne and D. I. Benn Chapter 53 Paraglacial or Periglacial? The Sedimentology of Slope Deposits in Upland Northumberland / S. Harrison Chapter 54 Slow Mass Movements and Climatic Relationships, 1972-1994, Kapp Linné, West Spitzbergen / H. J. Akerman Chapter 55 Rock Weathering and the Formation of Summit Blockfield Slopes in Norway: Examples and Implications / B. R. Rea, W. B. Whalley and E. M. Porter Author Index Subject Index
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  • 83
    Call number: MR 22.94902
    In: Special publication / The Geochemical Society, 6
    Type of Medium: Monograph available for loan
    Pages: XII, 322 Seiten , Illustrationen, graphische Darstellungen
    ISBN: 0-941809-05-6
    Series Statement: Special publication / The Geochemical Society No. 6
    Language: English
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  • 84
    Call number: AWI G4-23-95001
    Type of Medium: Monograph available for loan
    Pages: ii, 62 Seiten , Illustrationen
    Language: English
    Note: Contents Summary Introduction Material and Methods 2.1 Experimental Approach and Concept 2.2 Cold Chamber Experiments 2.2.1 Packed Sand Columns 2.2.2 Undisturbed Soil Monolith 2.3 Tracer Extraction and Determination of Tracer Concentrations 2.4 Digital Image Analysis 2.4.1 Photographic Recording 2.4.2 Image Analysis 2.4.3 Statistical Regression Analysis 2.5 Fluorescence Imaging 2.6 Low-Temperature SEM and X-Ray Analysis 2.7 Numerical Simulation 2.7.1 Model Description 2.7.2 Model Application 3 Results From Cold Chamber Experiments 3.1 Packed Sand Columns (Experiment I-III) 3.1.1 Infiltration Behaviour (Experiment I-III) 3.1.2 Dye Tracer Distribution (Experiment III) 3.1.3 Mass Recovery of Dye Tracers (Experiment III) 3.1.4 Vertical Distribution of Dye Tracers Determined From Large Sections (Experiment III) 3.2 Undisturbed Soil Monolith (Experiment IV) 3.2.1 Infiltration Behaviour 3.2.2 Dye Tracer Distributions 3.2.3 Mass Recovery of all Tracers Determined From Large Sections 3.2.4 Vertical Distribution of all Tracers Determined From Large Sections 4 Results From Low-Temperature SEM and X-Ray Analysis 4.1 Dry Sand and Loam 4.2 Wet Sand 4.3 Wet Loam 5 Modelling Results 5.1 Thermal Regime 5.2 Water Content Profile Before the Irrigation 5.3 Infiltration Behaviour 5.4 Water Content Profile After the Irrigation 5.5 Solute Transport 5.6 Energy Exchange at the Surface 6 Conclusions 6.1 Conclusions About the Methods 6.2 Conclusions About the Water Infiltration in Frozen Soil List of Figures List of Tables Bibliography
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  • 85
    Call number: O 2075/1964 II
    Type of Medium: Journal available for loan
    ISSN: 0367-6684 , 0568-5249 , 0568-5249
    Former Title: Vorg. Akademija nauk SSSR Izvestija Akademii Nauk SSSR / Serija geografičeskaja i geofizičeskaja
    Subsequent Title: Forts. Akademija nauk SSSR Izvestija Akademii Nauk SSSR / Fizika zemli
    Subsequent Title: Forts. Akademija nauk SSSR Izvestija Akademii Nauk SSSR / Fizika atmosfery i okeana
    Language: Russian , English
    Note: Teils mit Jg.-Zählung , In kyrill. Schr
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  • 86
    Monograph available for loan
    Monograph available for loan
    London : Intermediate Technology Publications
    Call number: PIK N 071-18-91871
    Type of Medium: Monograph available for loan
    Pages: XI, 192 Seiten , 23 cm
    ISBN: 1853394513
    Language: English
    Location: A 18 - must be ordered
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  • 87
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [s.n.]
    Call number: AWI G7-19-92044
    Type of Medium: Monograph available for loan
    Pages: 75 Seiten , Illustrationen
    Language: English
    Note: CONTENTS: Flight plan 1999. - LC130 schedule. - NGRIP 1999 schedule. - Overview of 1999 schedule. - lnfo for August1998 meeting. - Quartering and buildings. - Number of field participants. - NGRIP 1999 sub programs. - SITREP. - Term of reference for the NGRIP field work. - Accidents and illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 1999. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NG RIP camp load. - Kangerlussuaq and the surrounding area. - Thule Air Base, Greenland, Base Operations. - Uplift 1998. - Typical specifications for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan and frequencies used. - Phonetic alphabet. - Personal field equipment. - Operation of Thrane & Thrane STDC telex terminal. - Operation of NERA lnmarsat M terminal. - Map of NGRIP camp. - NGRIP inclined pit and trenches. - Map of NGRIP Region. - Map of Greenland and North Greenland. - Map of skiway. - Ice divide North of NGRIP. - Map of the magnetic declination in Greenland. - Glycol specification. - Density vs temperature of hole liquid. - Positions in Greenland, distances and directions. - List of NGRIP addresses.
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  • 88
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [s.n.]
    Call number: AWI G7-19-92046
    Type of Medium: Monograph available for loan
    Pages: 64 Seiten , Illustrationen
    Language: English
    Note: CONTENTS: Flight plan 1996. - C130 schedule. - NGRIP 1996 Schedule. - Overview of 1996 schedule. - Camp Layout. - Buildings. - Number of field participants. - NGRIP 1996 Sub programs. - CARDS Radar test. - KMS Elevation measurements. - SITREP. - Terms of Reference during the field operation. - Accidents and Illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 1996. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NGRIP camp load. - Kangerlussuaq and Surrounding Area. - Thule Air Base, Greenland, Base Operations. - Other useful information for Thule passengers. - Uplift 1996. - Typical specs for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan. - Summary of frequencies used in Greenland. - Phonetic alphabet. - Personal field equipment. - Map of GRIP camp. - NGRIP, Maps of one and two line set up. - NGRIP trenches. - Map of Greenland. - Map of north Greenland. - Map of ice divide north of GRIP. - Map of magnetic declination in Greenland. - Positions in Greenland. - Relevant distances and directions. - 1996 Twin Otter hours. - List of NGRIP addresses.
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  • 89
    Monograph available for loan
    Monograph available for loan
    Aldershot : Aslib Gower
    Call number: M 96.0155
    Type of Medium: Monograph available for loan
    Pages: XV, 233 Seiten
    Edition: 2. reviewed and edited reprint
    ISBN: 0566077159 , 0566078120
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 90
    Monograph available for loan
    Monograph available for loan
    Mineola, NY : Dover Publications
    Call number: PIK M 323-19-92793
    Type of Medium: Monograph available for loan
    Pages: XI, 484 Seiten , Diagramme
    ISBN: 0486696200 (pbk.)
    Series Statement: Dover books on mathematics
    Language: English
    Location: A 18 - must be ordered
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  • 91
    Call number: PIK N 311-19-93084
    Type of Medium: Monograph available for loan
    Pages: XIII, 308, [10] S , Illustrationen, Diagramme
    ISBN: 0471965243
    Series Statement: Dahlem workshop report
    Language: English
    Location: A 18 - must be ordered
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  • 92
    Monograph available for loan
    Monograph available for loan
    Joensuu : European Forest Institute
    Call number: PIK W 510-19-92843
    Type of Medium: Monograph available for loan
    Pages: V, 174 Seiten , Diagramme
    ISBN: 9529844123
    Series Statement: Working paper / European Forest Institute 10
    Language: English
    Branch Library: PIK Library
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  • 93
    Series available for loan
    Series available for loan
    Durham, N.H. : [GISP2 Science Management Office, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire]
    Call number: AWI P8-20-93386
    Type of Medium: Series available for loan
    Pages: 41 Seiten
    Language: English
    Location: AWI Reading room
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  • 94
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-59
    In: Research report / Cold Regions Research and Engineering Laboratory, 59
    Description / Table of Contents: Summary: The deflection expression of an infinite plate subjected to a concentrated force is used with the "method of images" to obtain solutions for 6 plates with simply supported edges. The semi-infinite plate, the wedge-shaped plate, and its special case, the rectangular corner plate, are solved in closed form; and the infinite strip, the semi-infinite strip, and the rectangular plate are solved as rapidly convergent series. Behavior under a concentrated force is studied in more detail for the semi-infinite plate and the rectangular corner plate. Relationships for obtaining bending moments, shear forces and reaction distributions as well as derivatives of the kei-function with respect to ? and ? are given in the appendices.
    Type of Medium: Series available for loan
    Pages: iv, 12, [2] Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 59
    Language: English
    Note: CONTENTS Preface Introduction and statement of the problem Solution of the boundary value problems for simply supported boundaries Semi-infinite plate Wedge-shaped plate Rectangular corner plate Infinite strip Semi-infinite strip Rectangular plate Remarks on the problem of arbitrary load distribution References Appendix A Appendix B
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  • 95
    Monograph available for loan
    Monograph available for loan
    Cheltenham, UK [u.a.] : Elgar
    Call number: IASS 20.94406
    Description / Table of Contents: enth.
    Type of Medium: Monograph available for loan
    Pages: XVIII, 521 S. : graph. Darst , Tab., graph. Darst.
    ISBN: 1858987164
    Series Statement: New horizons in the economics of innovation
    Language: English
    Branch Library: RIFS Library
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  • 96
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-20
    In: Research report / Cold Regions Research and Engineering Laboratory, 20
    Description / Table of Contents: Summary: Investigations on sea ice at Hopedale, Labrador, March 1956, included: small beam tests and in-place cantilever beam tests for flexural strength; ring tensile-strength tests; unconfined compression tests, with stress-strain studies to determine "Young's modulus"; and double shear tests. The results exhibit a great deal of scatter, primarily due to the inhomogeneity of sea ice. Ring tensile strength values range between 3.3 kg/cm^2 and 22.3 kg/cm2 between -2.5°C and -19.1°C. The small beam tests give flexural strength values from 0.5 to 17.3 kg/cm^2 in a similar temperature range. The in-place pull-up cantilever beam tests give flexural strength values of 2.2 to 4.0 kg/cm^2, with much less scatter. Crushing strength values range from 26.3 to more than 107 kg/cm^2 in the range -4.9°C to -18.3°C. Values for Young's modulus obtained from the slope of the straight line portion of the stress-strain curves in compression ranged between 4520 and 10,225 kg/cm^2. There is a temperature dependence, explained by the effect of change in brine content, on sea-ice structure. The double shear tests give values of 7.8 to 34.2 kg/cm^2 in the range -5.5°C to -12.8°C. These are higher than the tensile-strength values. These failures occurred normal to the direction of growth, while the tensile strength was obtained with failure parallel to it.
    Type of Medium: Series available for loan
    Pages: 15 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 20
    Language: English
    Note: CONTENTS Page Preface Summary Introduction Ring tensile strength Flexural strength of small beams Flexural strength of inplace beams Crushing strength Shear strength Discussion of results References
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  • 97
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-21
    In: Research report / Cold Regions Research and Engineering Laboratory, 21
    Description / Table of Contents: Limited studies of white-outs on the Greenland Ice Cap indicate that five major types of low visibility have been reported as white-out. They are: 1.) Overcast white-out, caused by a continuous cloud cover. 2.) Water-fog white-out, produced by supercooled water droplets in the air. 3.) Ice-fog white-out, produced by ice crystals suspended in the air. 4.) Blowing snow white-out, produced by wind-driven, wind-eroded snow. 5.) Precipitation white-out, produced by falling snow. The first three types are interrelated and appear to be produced by upslope, convective lifting of warm maritime air and the advective transport of the cooled saturated air over the cold snow field. Radiation heat losses from the snow surface may contribute to more rapid formation of the white-out. The fact that there is a shift in the prevailing wind direction prior to the development of a white-out indicates that certain changes in upper air circulation may be associated with white-out formation and duration. There is reason to believe that upper air and surface observations might make it possible to forecast white-outs on the Greenland Ice Cap with some degree of reliability.
    Type of Medium: Series available for loan
    Pages: iv, 12 Seiten , Illustrationen , 27 cm
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 21
    Language: English
    Note: CONTENTS Preface Summary Introduction Results at Site 2 Discussion References
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  • 98
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-29
    In: Research report / Cold Regions Research and Engineering Laboratory, 29
    Description / Table of Contents: Summary: A microscopic method for the determination of particle-size distributions of pulverized snow was worked out. The method gives satisfactory distribution curves, presenting the number of particles as a function of their cross-sectional "areas". The measurements were made by means of a filar micrometer eyepiece, the snow particles being placed on a ruled glass slide, which was submerged in silicone oil to prevent evaporation. The time for the determination of a distribution can be appreciably shortened by estimating the size of the particles instead of measuring them, though the accuracy is not so high in this case.
    Type of Medium: Series available for loan
    Pages: iv, 8 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 29
    Language: English
    Note: CONTENTS Preface Summary Introduction Experimental Snow samples Procedure Experimental results Fraction 150-300 µ Fraction 0-150 µ Mixture of fractions Conclusions
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  • 99
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-26
    In: Research report / Cold Regions Research and Engineering Laboratory, 26
    Description / Table of Contents: Summary: The results of temperature, density, ram-hardness and grain-size measurements at 118 test sites along a 300-mi. traverse, ranging in elevation from 2000 to 8000 ft, are reported in detail, and their meteorological and climatic implications are discussed. Four types of diagenetically produced facies were recognized: ablation facies, extending from the snout of the glacier to the firn line; soaked facies, extending from the firn line to the saturation line; percolation facies, extending from the saturation line to the dry-snow line; and dry-snow facies, extending across the glacier above the dry-snow line. The well defined saturation line shows marked discontinuities in temperature, density, and ram hardness, while the dry-snow line is a transition 1 zone 10-20 mi. wide. The recognition of facies allows greater resolution of glacier characteristics than Ahlmann's classification, permitting quantitative subdivision of all types of large glaciers. Regional precipitation (entirely from cyclonic storms) is about 5 times greater than at Thule; and the prevailing katabatic winds control the vertical component of the temperature gradient in the snow and firn. The depth density curve of the firn at elevations where melt is negligible is invariant with time, as in Sorge's law, so that the densification can be treated as a steady-state situation with load as the only significant variable.
    Type of Medium: Series available for loan
    Pages: vii, 62, A4, B2, C2 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 26
    Language: English
    Note: CONTENTS Preface Summary Chapter I. Introduction Greenland Glaciers and stratigraphy The Greenland ice sheet - a rock formation Region of investigation Chapter II. Methods of investigation Stratigraphy Accumulation measurements Work program at pit stations General description of pits Temperature Hardness Density, stratigraphy, and grain size Accuracy of density measurements Photography Core drilling Air permeability and mechanical tests Elevation measurements Barometric altimetry Transit leveling Chapter III. Basic concepts and definitions Summer melt Soaking Complete soaking Localized percolation Stability Diagenetic facies Chapter IV. Presentation and discussion of results Grain size and morphology Grain size Morphology Temperature Seasonal variation and mean annual temperature Thermal effect of an open pit Constancy of climate Facies in terms of temperature data Hardness Continuity of strata Effect of wind Increase in R with depth below snow surface Facies in terms of hardness data Density Depth vs density data Depth vs load data Attempts to formulate depth vs density Facies in terms of density data Glacier facies - a classification of glaciers Chapter V. Stratigraphy and accumulation Stratigraphy Stratigraphic interpretation at station 1-0 Correlation between stratigraphic and meteorological records Accumulation Integrated qepth-density curves Measurement of accumulation on surface marker plates Pole-marker measurements Stratigraphic correlation Selection of a reference datum in the annual stratigraphic sequence Correlation across the traverse Effects of topography Chapter VI. Meteorological and climatological implications Winds Precipitation Annual heat exchange References Appendix A: Stratigraphy, meteorology and glaciology Appendix B: Logistics and development of the research program Appendix C: Tables
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  • 100
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-27
    In: Research report / Cold Regions Research and Engineering Laboratory, 27
    Description / Table of Contents: Summary: The results of a study on the feasibility of mapping selected snow-cover characteristics for military purposes, taking into account both current synoptic and average conditions, are reported in detail. Problems associated with the construction of isolines for depicting individual or combination of snow-cover conditions are discussed; the need for other statistical parameters in addition to the means is stressed; and the adaptation of frequency and variability indices is suggested. The use of a regional technique, which identified areas somewhat homogenous or substantially different from adjacent areas, is investigated. Problems in mapping snow density are also considered as well as the possibility of estimating snow density from meteorological data. Three sets of codes for the systematic recording and transmission of data are proposed, including a code for ground observers, a simplified code for use where no instruments or trained personnel are available, and a code for aerial observations.
    Type of Medium: Series available for loan
    Pages: vi, 92 Seiten , Illustrationen , 27 cm
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 27
    Language: English
    Note: TABLE OF CONTENTS PREFACE LIST OF TABLES LIST OF ILLUSTRATIONS INTRODUCTION Chapter I. APPLICATION OF ISOLINES FOR DEPICTING ASPECTS OF THE SNOW COVER Visual Problems Use of a simplified base map Other solutions Substantive Problems Observational errors Sampling errors Bias error Effect of reliability of data on isolines Conclusion The ''reasoned distribution'' Effects of substantive problems Conclusion II. DEVELOPMENT OF OTHER MEASURES, INDICES, AND METHODS FOR DEPICTING SNOW COVER CONDITIONS Examples of Possible Normal Indices of Snow Cover Average snow depth at end of the maximum month Average monthly snow depths by superimposed or located line graphs Time aspects Snowfall Selected Statistical Parameters of a Particular Value Extreme values Frequency values Measures of variability Conclusion III. SNOW REGIONS: AN APPROACH TO MAPPING SNOW COVER Snow Region Concept Descriptions of Snow Regions 1. Pacific Coast and Coastal Valley Region 2. The Mountain Zone 3. Great Plains Region 4. The Mackenzie-Manitoba Region 5. Upper Ontario Region 6. Northern Great Lakes-St. Lawrence Region 7. Labrador Region 8. The Northern Arctic Region 9. Ungava-Baffinland Region Conclusions IV. CURRENT SNOW DATA MAPS Introduction Ground Observer's Code Suggested code for "Ground Observer's Snow Report" Comments Symbols for a comprehensive station model Air Observation Code Comments Station Model for Aircraft Snow Observations A Simplified Snow Observation Report . Introduction Proposed code and symbols for station model based on Simplified Snow Observation Report Conclusion Chapter V. MAPPING SNOW DENSITY Introduction Limitations of Data for Mapping Available data Reliability of the data Natural variations in density Snow Density Maps of Eastern Canada Statistical Investigation of Density: Eastern Canada Test for area differences Estimating regional trends in density: Orthogonal polynomials Regional density changes during the winter Conclusions: Statistical investigations Estimating Snow Density from Meteorological Data Relation of density to wind speed and temperature Application of Dmitrieva's equation Conclusion VI. CONCLUSION Snow Cover Maps: Small Scale Compilations of Various Aspects of Their Parameters Preparation of Synoptic Current Snow Data Maps Snow Density Research Investigation of Drift and Erosional Surfaces Initiation of Systematic Collection and Recording of Snow Data Internationally Research Reports Based on Existing Literature .
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