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  • 1
    Signatur: M 96.0537/1 ; 15/13860/1
    In: Proceedings
    Materialart: Monographie ausleihbar
    Seiten: xxi, 868 S.
    ISBN: 0132463644
    Klassifikation:
    B.5.
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Signatur: MOP Per 492(1925) / DG
    In: Bericht über die Tätigkeit des Königlich Preußischen Meteorologischen Instituts ; 1925, 1925
    In: Veröffentlichungen des Preußischen Meteorologischen Instituts ; 335, Nr. 335
    Materialart: Monographie Präsenzbestand
    Seiten: 111 S. , Ill.
    Serie: Veröffentlichungen des Preußischen Meteorologischen Instituts 335
    Sprache: Englisch
    Anmerkung: Inhaltsverzeichnis: 1. Einleitung. - 2. Personalien. - 3. Das Stationsnetz. - Stationen I., II. und III. Ordnung und Stationen, die nur Sonnenschein beobachten. - Regenstationen. - Gewitterstationen. - 4. Wetterdienst. - 5. Stationsinstrumente und Sammlungen des Zentralinstituts. Instrumente. Bücherei. - 6. Besondere Arbeiten im Zentralinstitut. - 7. Das Meteorologisch-Magnetische Observatorium bei Potsdam. - Allgemeines. - Meteorologische Beobachungen und Arbeiten. - Magnetische Arbeiten. - 8. Dienstreisen. - 9. Veröffentlichungen. - Veröffentlichungen des Instituts. - Fachwissenschaftliche Veröffentlichungen der Beamten. - Eine photographische Registriereinrichtung mit weiter Zeitskala bei sparsamem Papierverbrauch / Ad. Schmidt. - Vertikale Temperaturgradienten im Gebirge / H. v. Ficker. - Ein Beitrag zur Kenntnis der Regenböen im atlantischen Passatgebiet / K. Knoch. - Ungewöhnlicher Luftdruckanstieg am 22. Dezember 1925 / W. König. - Ueber Niederschlag und gleichzeitigen Luftdruckgang / W. König. - Die Häufigkeit zu nasser und zu trockener Sommermonate (Regenklemmen) in Ostpreußen / G. Wussow. - Das Schwerefeld eines magnetischen Moleküls / O. Venske. - Jährlicher und täglicher Gang der Verdunstung in Potsdam / R. Süring. - Temperatur, Niederschlag und Sonnenschein im Jahre 1925 nach den Beobachtungen der im deutschen Witterungsbericht erscheinenden Stationen.
    Standort: MOP - Bitte bestellen
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  • 3
    Monographie ausleihbar
    Monographie ausleihbar
    New York, N.Y. [u.a.] : Springer
    Signatur: M 15.89123
    Beschreibung / Inhaltsverzeichnis: In the first edition of this book I tried to survey in brief compass the main ideas, methods, and discoveries of rational thermodynamics as it then stood, only five years after Messrs. COLEMAN & NOLL, while in Baltimore, had written the fundamental memoir that provided for the new science the one root theretofore wanting. A survey in the same style today would require an almost wholly new book, three or four times as long. As it was in 1968, again in 1983 a consecutive treatise restricted to the foundations would be premature, for at this moment they are under earnest discussion, probing analysis, and powerful attack by several students and from several directions. Because, although in the first edition I expressed some opinions I no longer hold and made some statements I should now recast or even re­ tract, it seems even yet to offer a simple introduction to some aspects of the field that remain current, I have chosen to reprint it unaltered except for emendation of slips and bettering of the English here and there.
    Materialart: Monographie ausleihbar
    Seiten: XVI, 578 S , graph. Darst
    Ausgabe: 2., ed. corr. and enl.
    ISBN: 0387908749 , 3540908749
    Sprache: Englisch
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Monographie ausleihbar
    Monographie ausleihbar
    Boston, Mass. : American Meteorol. Soc.
    Signatur: PIK N 456-16-90119
    Materialart: Monographie ausleihbar
    Seiten: XVII, 208 S. , Ill., graph. Darst.
    ISBN: 0933876548
    Serie: Meteorological Monographs 19,41
    Sprache: Englisch
    Standort: A 18 - Bitte bestellen
    Zweigbibliothek: PIK Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Monographie ausleihbar
    Monographie ausleihbar
    [Edgecumbe, N.Z.] : A. Muller
    Signatur: M 15.89146
    Beschreibung / Inhaltsverzeichnis: An account of the results of the 2 March 1987 earthquake in the eastern Bay of Plenty and the aftermath's effects on the people and places on the Rangitaiki Plains
    Materialart: Monographie ausleihbar
    Seiten: 223 S., , Ill.
    Sprache: Englisch
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Monographie ausleihbar
    Monographie ausleihbar
    Rockville, MD : U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Data and Information Service,
    Signatur: PIK N 454-17-90910
    Materialart: Monographie ausleihbar
    Seiten: x, 290 Seiten , Diagramme, Karten , 28 cm
    Sprache: Englisch
    Standort: A 18 - Bitte bestellen
    Zweigbibliothek: PIK Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Monographie ausleihbar
    Monographie ausleihbar
    New York : Vintage Books
    Signatur: IASS 16.90435
    Materialart: Monographie ausleihbar
    Seiten: XII, 270 S.
    ISBN: 0394513576 , 039473954x (pbk.) , 9780394739540 (pbk.)
    Sprache: Englisch
    Zweigbibliothek: RIFS Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Signatur: PIK N 456-16-90137
    Materialart: Monographie ausleihbar
    Seiten: getr. Zählung , ill. (some col.) , 24 cm
    Sprache: Englisch
    Anmerkung: Enth.: Introduction -- Pt. 2. Union of South Africa from Olifants River to Mossel Bay. With an appendix on conditions at Saldanha Bay, Cape Town and Simonstown -- Pt. 3. Union of South Africa from Mossel Bay to East London.With an appendix on conditions oat Mossel Bay and Port Elizabeth -- Pt. 4. Union of South Africa from East London to Kosi Bay.With an appendix on conditions at East London and Durban -- Pt. 5. Portuguese East Africa (Mocambique) and Mocambique Channel -- Pt. 5a. Madagascar. With an appendix on conditions at Mayotte, Diégo Suarez, Nossi Bé and Tamatave
    Standort: A 18 - Bitte bestellen
    Zweigbibliothek: PIK Bibliothek
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  • 9
    Monographie ausleihbar
    Monographie ausleihbar
    New York, NY : American Museum of Natural History
    Signatur: AWI G1-17-90940
    Materialart: Monographie ausleihbar
    Seiten: XXXI, 475 S. , Ill., Kt., graph. Darst. , 6 Kt.
    Serie: Natural History of Central Asia 2
    Sprache: Englisch
    Anmerkung: CONTENTS: PREFACE. - LIST OF PLATES. - LIST OF FIGURES. - PART I. - GENERAL INTRODUCTION. - I. - Geological objectives and methods of the expedition with a review of former explorations. - Introduction. - The approach to Mongolia. - The Gobi Region. - Prehistoric adventure. - Historic travel and modern exploration. - Earlier studies of special significance. - II. - Boundaries of the Gobie Region. - Introduction. - The Northern Boundary. - Northern boundary - western section. - Northern boundary - central section. - Northern boundary - eastern section. - Summary of the Transbaikal border. - The Eastern Boundary. - Summary of the eastern boundary. - The Southern Boundary. - Southern boundary - eastern section. - Southern boundary - central section. - Southern boundary - western section. - The Western Boundary. - PART II. - ROUTE STUDIES OR ITINERARY. - Introduction. - The task of a geological reconnaisance expedition. - Recording observations. - III. - From Kalgan to Iren Dabasu. - Kalgan to Wan Ch'uan Pass. - The lower pass. - Wan Ch'uan basin and the upper pass. - The Pacific divide to P'ang Kiang. - The granite hills of Chakhar. - The P'ang Kiang hollow. - P'ang Kiang to Iren Dabasu. - The first fossils. - IV. - From Iren Dabasu to Urga. - Iren Dabasu to Camp Jurassic. - The structural relations at Camp Jurassic. - Camp Jurassic to Mount Tuerin. - The granites of Mount Tuerin. - Mount Tuerin to Bolkuk Gol. - The Arctic divide. - Observations in the vicinity of Camp Bolkuk Gol. - Course of the Bolkuk Gol. - Glacial evidence in the Gangin Daba. - Ground ice. - Local culture. - Side traverse toward Urga. - Mineral resources. - V. - From Urga to Tsetsenwan Traverse along the Tola River. - The vicinity of five Antelope Camp. - From the Tola River to Tsetsenwan. - The vicinity of Tsetsenwan. - A side traverse north of Tsetsenwan. - The serpent-form dikes. - Contact effects of the granite margin. - Jurassic structural relations. - A side traverse south of Tsetsenwan. - VI. - From Tsetsenwan to Sain Noin and the Arctic divide. - Wastward from Tsetsenwan. - The vicinity of Camp Canyon Brook. - From Camp Canyon Brook to the Ongin Gol. - Rock-bound hollows. - Continuation of the traverse. - The Ongin Gol. - From the Ongin Gol to Sain Noin. - The vicinity of Sain Noin. - From Rainy Gulch to the Arctic Divide. - A step across the divide. - VII. - From the hot springs of Sain Noin to Mount Uskuk. - Arishan to Gorida. - The Gorida basin. - The old Uliassutai trail. - Old Uliassutai Trail to Mount Uskuk. - The saltpan of Guchu Burt. - Ondai Sair. - VII. - The return journey from Tsagan Nor to Artsa Bogdo. - Choosing a route. - Tsagan Nor to the volcanic cliffs. - Desert hollows. - Volcanic cliffs to Artsa Bogdo. - North Margin of Artsa Bogdo. - Picture writings. - IX. - From Artsa Bogdo to Sair Usu. - Artsa Bogdo to Djadokhta. - The flaming cliffs of Djadokhta. - Djadokhta to Ongin Gol in Sumu. - Ongin Gol in Sumu. - Ongin Gol to Sair Usu. - X. - From Sair Usu to Kalgan. - Palaeozoic strata. - Continuation of traverse to Ardyn Obo. - Sediments of Ardyn Obo. - Ardyn Obo to Shara Murun. - Palaeozoic strata of Jisu Honguer. - Tertiary sediments of Shara Murun. - Shara Murun to Kalgan. - Chinese settlements. - The return to Kalgan. - PART III. - SPECIAL AND LOCALITY STUDIES. - Introduction. - Method of Mapping. - XI. - Eren Dabasu and Irdin Manha. - Introduction. - General aspect and larger relations of the basin. - Origin of the hollow at Iren Dabasu. - General Rock structure. - The Iren Dabasu formation. - Variegated Tertiary beds. - The Houldjin formation. - The Arshanto and Irdin Manha formations. - Shara Murun. - Age and correlation. - XII. - Arishan, the sacred mountain of Sain Noin. - Introduction. - Features of the locality. - Geological formations. - Graywacke series. - The granite. - The Jurassic formation. - Special products. - Structural features. - The spring waters and their origin. - XIII. - Mount Uskuk and the Tsagan Nor Basin. - Principal structural features. - The rock formations. - Rocks of the ancient floor. - The crystalline metamorphics. - The graywacke series. - Bathylithic granite. - Jurassic strata. - Post-Jurassic intrusives. - Rocks of the sedimentary cover. - Cretaceous strata. - Fossil content. - Tertiary strata. - Fossil content. - Former extent of later sediments. - Evidence of the faulted margins. - Evidence of the sedimentary remnants. - Evidence of the basalt remnants. - Evidence of planation. - Erosional history of the south block of Uskuk. - Deformation of the Mount Uskuk region. - The Saltpan of Guchu Burt. - Tsagan Nor. - XIV. - The Gurbun Saikhan Ranges. - The journey. - A desert well. - The return journey. - Geological observations at Artsa Bogdo. - The south.basin. - Approach to the Gurbun Saikhan. - The formations of the Gurbun Saikhan. - Ancient rocks. - Limestones. - Serpentine. - Graywacke-slate series. - Topographic character of the Gurbun Saikhan. - XV. - Artsa Bogdo and Oshih. - The Artsa Bogdo Mountain Block. - The marginal shelf. - History of the shelf. - Rock formations of the mountain. - Ancient meta-crystallines and intrusives. - Folded sediments and associated eruptives. - Later igneous rocks. - Tectonic features. - Traces of former sedimentary cover. - Topographic features. - Stream pattern. - Glaciation. - The Oshih Hollow. - Features of the locality. - The geologic column. - XVI. - Problems and areas deserving special study. - Introduction. - Sedimentary basins and potential fossil fields. - The area of the great pass. - P'ang Kiang. - The paper-shales of mile 299. - The flaming cliffs of Uskuk. - Oshih (Ashile) basin. - Djadokhta. - Ardyn Obo. - Shara Muraci. - Ulan Nor. - The badlands of the Ongin Gol. - Structural and historical problems. - The Camp Jurassic area. - The crystalline upland east of the Ongin Gol. - The transition country of Gangin Daba. - Sair Usu. - Los in Sumu. - Jisu Honguer. - Genral problems. - PART IV. - SUMMARIES AND DISCUSSIONS. - Introduction. - XVII. - Structural elements of the Oldrock floor. - Two major divisions. - Subdivision of the Oldrock floor. - Mesozoic intrusives. - Jurassic sediments. - Paloeozoic strata. - The great Mongolian bathylith. - The Khangai graywacke series. - The ancient crystalline complex. - The Wu T'ai system. - The T'ai Shan complex. - XVIII. - Surface features and their origin. - Basins and mountains. - The basin of Mongolia. - Deserts in general. - The shaping processes. - Major subdivisions of the Mongolian Basin. - Talas of the eastern and southern province. - The western faulted talas. - Mountains. - Fault-block mountains of the Altai type. - Ikhe Bogdo. - Baga Bogdo. - Artsa Bogdo. - Gurbun Saikhan. - The mountains of the eastern province. - Volcanic mountains. - The structure lines of Mongolia. - XIX. - Surface features and their origin (continued). - Plateaus, plains and flatlands. - Introduction - the level lands of the desert. - Agencies which carve the erosion plane. - Erosion by wind. - Rainfall. - Drainage. - Immigrant streams. - Native streams. - Erosive work of running water. - The Piedmont Slope. - The Gobi erosion plane. - Original slopes of the erosion plane. - Deformation of the Gobi surface. - Deposits on the Gobi upland. - Redissection of the Gobi erosion plane. - Summary of the Gobi erosion plane. - Desert Hollows. - The older Peneplanes. - The pre-Cretaceous peneplane. - The Mongolian peneplane. - The Khangai peneplane. - Relations of the Khangai and Mongolian peneplanes . - Relations of the Mongolian peneplane and the Gobi erosion plane. - Relations between the Gobi erosion plane and the lowlands of the P'ang Kiang stage. - Comparison of peneplanes with those of surrounding regions. -
    Standort: AWI Lesesaal
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  • 10
    Monographie ausleihbar
    Monographie ausleihbar
    New Delhi : Amerind Publishing
    Signatur: AWI G2-18-91897
    Beschreibung / Inhaltsverzeichnis: This publication is concerned with problems of the origin, evolution and paleogeography of the Arctic Ocean and its coast during the Tertiary and Quaternary periods. Much emphasis is placed on the evolution of modern Arctic flora and fauna, both terrestrial and aquatic. All these problems are discussed on the basis of hydrological, paleontological, biogeographical, climatological and archaeological data presented at the AII-Union symposium held in Leningrad during April 1-6, 1968. This is a unique encyclopedia on the Arctic. lt will be of interest to many research workers - geographers, geologists, biologists, hydrologists and all who deal with problems of the geological history and paleogeography of the Northern Hemisphere.
    Materialart: Monographie ausleihbar
    Seiten: XIV, 564 Seiten , Illustrationen
    Originaltitel: Severnyi Ledovityi Okean i Ego Poberezh'e v Kainozoe
    Sprache: Englisch
    Anmerkung: Contents: PREFACE. - SECTION I. HISTORY OF THE ARCTIC OCEAN IN THE CENOZOIC ERA. - Linear and Areal Morphostructures of the Arctic Ocean Floor / V. D. Dibner. - Fluctuations in Arctic Climate as Revealed by Floor Sediment Analysis / N. A. Belov, N. N. Lapina. - Stratification and Rate of Accumulation of Floor Sediments of the Soviet Arctic Seas / N. N. Kulikov, N. N. Lapina, Yu. P. Semenov, N. A. Belov, M. A. Spiridonov. - Palynologic Study of Kara Sea Floor Sediment Cores / N. N. Kulikov, R. M. Khitrova. - Geologic Structure of the Glacial Shelves of the Atlantic Province of the Arctic Basin / M. A. Spiridonov. - Stratigraphy and Paleogeography of Spitsbergen in the Pleistocene / Yu. A. Lavrushin. - Role of Glaciers in Franz Josef Land Relief Formation / V. L. Sukhodrovskii. - Reconstruction of the Late- and Post-Pleistocene Arctic Basin Ice Sheet / P. M. Borisov. - Changes in the Arctic Basin since the Last Glaciation Maximum / D. P. Chizhov. - SECTION II. ARCTIC FLORA AND FAUNA AND THE HISTORY OF THEIR FORMATION. - Some Problems of Study of the Early Cenophytic Arctic Flora / L. Yu. Budantsev. - Arctic Flora and Its Historical Link with the Arctic Ocean / A. I. Tolmachev, B. A. Yurtsev. - Wide Fluctuations in Ocean Level in the Quaternary period and Their Influence on the Arctic Ocean Basin and its biological community / G. U. Lindberg. - Fresh Data on the Food of the Siberian Woolly Rhinoceros / V. E. Garutt, E. P. Meteltseva, B. A. Tikhomirov. - Characteristics of the Arctic Ocean Fauna and their significance for understanding the History of its formation / E. F. Guryanova. - Formation of macroscopic marine algal flora of the Arctic Basin / A. D. Zinova, Yu. E. Petrov. - The Concept of the Arctic origin of Pinnipeds and other solutions of this problem / K. K. Chapskii. - Ecological Adaptations of Pinnipeds in the Atlantic Province of the Polar Basin / V. A. Potelov, Yu. K. Timoshenko. - A General Review of th PIeistocene Marine Faunas of the Northern Coast of Eurasia / S. L. Troitskii. - History of the Evolution of Marine Mollusk Fauna of the Late Cenozoic Atlantic Arctic / V. S. Zarkhidze. - Late Cenozoic History of Foraminifera of the Pechora Lowland and Northern West Siberia / O. F. Baranovskaya, V. Ya. Slobodin. - Species composition of Modern Foraminifera as an Indication of the Arctic Sea's hydrological regime / S. V. Tamanova. - SECTION Ill. PALEOGEOGRAPHY OF THE NORTHERN TERRITORIES IN THE LATE CENOZOIC ERA. - Paleogeography of Northern USSR and contiguous areas of the Arctic Basin / G. S. Ganeshin. - North Eurasia in the Late Cenozoic Era / Yu. P. Degtyarenko, V. V. Zhukov, N. G. Zagorskaya, O. A. Ivanov, V. I. Kaiyalainen, Yu. N. Kulakov, A. P. Puminov, V. Ya. Slobodin, O. V. Suzdalskii. - On the History of the Migration of the Arctic Basin Shoreline in the Cenozoic Era / S. A. Strelkov. - Causes of Fluctuations in the Arctic Basin Level in the Neogene-Quaternary Period / J. L. Kuzin. - Spore-Pollen Analysis of Late Cenozoic Marine Sediments in the Reconstruction of the Paleogeography of the Arctic Coasts / N. G. Zagorskaya, F. M. Levina. - Forest Line Migration in North Asia in the Upper Pleistocene and Holocene (Based on Spore-Pollen Analysis) / R. E. Giterman, L. V. Golubeva, E. V. Koreneva, L. A. Skiba. - Holocene Transgressions and Variations in the Northern Coastline of the Kola Peninsula / B. I. Koshechkin, A. L. Kudlaeva. - Interpretation of Radiocarbon Datings of the Absolute Age of Organic Residues from the Upper Anthropogene Deposits of Fennoscandia / V. G. Chuvardinskii. - Structure and Stratigraphic Division of White Sea Bottom Deposits / V. S. Medvedev, E. N. Nevesskii, L. I. Govberg, E. S. Malyasova, R. N. Dzhinoridze, E. A. Kirienko. - Principal Stages in the History of the Vegetation of the Dvina Bay Coast of the White Sea during the Late- and Postglacial Transgression / E. S. Pleshivtseva. - Quaternary Transgressions in the Northern Russian Plain and Their Relationship with Continental Glaciations / E. N. Bylinskii. - Anthropogene Deposit-Forming Environments on Kolguev Island / O. F. Baranovskaya, T. A. Matveeva. - Cenozoic History of the Northern Coast of Europe / V. S. Zarkhidze. - Stages of Formation of the Southern Part of the Arctic Basin in Timan-Pechora Province in the Late Cenozoic Era / O. F. Baranovskaya, P. N. Safronov, G. N. Berdovskaya. - Pliocene-Pleistocene History of the Pechora Basin / V. L. Yakhimovich. - Paleogeography and Origin of Cenozoic Rocks in Soviet Europe as Revealed by Hydrochemical Data / V. D. Bezrodnov. - Study of Paleogeography and Neotectonics of Some Regions of the European Northeast by Coal Petrography / Yu. V. Stepanov. - History of the Formation of Arctic Shelf Foraminifer Fauna (Based on Data on the Timan-Ural Region) / I. N. Semenov. - Evolution of Pleistocene Marine Diatom Flora in the Northeast of Soviet Europe / E. I. Loseva. - Quaternary Deposits of the Middle Pechora and Vychegda River Basins / A. S. Lavrov. - Late Pleistocene Terraces in the Northeast of Soviet Europe and the Environments in which They were Formed / L. M. Potapenko, A. S. Lavrov. - Key Sections of the Lower Pechora and Their Importance for an Understanding of the Last Stages of the Geological Evolution of Northeastern Soviet Europe / V. S. Zarkhidze, I. I. Krasnov, M. A. Spiridonov, Yu. A. Lavrushin, I. I. Ryumina. - Siberian Elements in the Flora of the Far Northeast of Europe and Their Origin / O. V. Rebristaya. - Some Geographical Relationships of Ural Floras and Their Importance for Paleogeography / K. N. lgoshina. - Ostracod Complexes from the Late Cenozoic Marine Deposits of Northern Soviet Europe and West Siberia and Their Importance for Paleogeography / O. M. Lev. - Paleogeography of the Northern West Siberian Lowland and Russian Plain in the Late Pleistocene and Holocene / M. G. Kipiani, A. D. Kolbutov. - Mammals and Landscapes of the Northern Urals in the Late Anthropogene / I. E. Kuzmina. - Pleistocene Transgressions in Northern West Siberia and the Pechora Lowland / I. D. Danilov. - Salient Paleogeographic Features of the Pechora Lowland and Lower Ob Basin in the Neogene Epoch / P. P. Generalov, I. L. Kuzin, I. L. Zaionts, R. B. Krapivner. - Some Problems of the Quaternary Geology of Northern Soviet Europe and West Siberia / A. G. Kostyaev. - Northern West Siberia in the Pliocene and Pleistocene / O. V. Suzdalskii. - Boreal Transgressions and the Origin of Subsurface Sheet Ice Deposits / B. I. Vtyurin. - Dependence of Certain Types of Subsurface Glaciation in West Siberia on the Peculiarities of the Polar Sea / A .I. Popov. - History of Subsurface Freezing in West Siberia in the Light of Transgression of the Arctic Basin / V. V. Baulin. - New Data on the History of the Evolution of the Pre-Kazantseva and Kazantseva Vegetation in the Muzhi Urals and Southern Yamal (Based on Palynological Data) / E. E. Gurtovaya. - New Data on the Distribution of Recent Marine Deposits in West Siberia / I. L. Zaionts, Z. I. Kholodova. - Pleistocene Diatom Floras of the Yenisei North / Z. V. Aleshinskaya. - Some Upper Cenozoic Stratotypes of the Ust-Yenisei Depression / V. Ya. Slobodin. - Transgressions of the Arctic Basin and Evolution of the Yenisei North in the Pleistocene (Absolute Chronology of Events by 14C Dating) / N. V. Kind, L. D. Sulerzhitskii. - Kargin Diatoms from the Key Section of the Lower Yenisei / N. A. Khalfina. - Spread of Late Cenozoic Transgressions of the Arctic Basin in the Northwestern Central Siberian Tableland / V. D. Kryukov, V. V. Rogozhin. - Paleogeography of Northeastern Taimyr in the Quaternary Period (Based on Geological and Palynological Data) / G. N. Berdovskaya, N. A. Gei, V. M. Makeev. - Emergence and Development of Pleistocene Landscapes in the Eastern North Siberian Lowland / V. V. Zhukov, N. A. Pervuninskaya, L. Ya. Pinchuk. - History of Relief Formation in the Eastern North Siberian Lowland and the Adjoi
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  • 11
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Washington : U.S. Government Printing Office
    Signatur: MOP S 2672
    Materialart: Schriftenreihen ausleihbar
    Seiten: 130 Seiten , Illustrationen
    Ausgabe: Second edition
    Serie: U.S. Department of Commerce, Coast and Geodetic Survey Serial No. 166
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
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  • 12
    Signatur: ZSP-SCAR-570-5
    In: National Antarctic Research Report to SCAR, No. 5
    Materialart: Schriftenreihen ausleihbar
    Seiten: 35 Seiten
    ISSN: 0179-0072
    Serie: National Antarctic Research Report to SCAR 5
    Sprache: Englisch
    Anmerkung: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 82-October 83. - II. Planned Activities, October 83-October 84. - References.
    Standort: AWI Archiv
    Zweigbibliothek: AWI Bibliothek
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  • 13
    Signatur: ZSP-SCAR-570-4
    In: National Antarctic Research Report to SCAR, No. 4
    Materialart: Schriftenreihen ausleihbar
    Seiten: 24 Seiten
    ISSN: 0179-0072
    Serie: National Antarctic Research Report to SCAR 4
    Sprache: Englisch
    Anmerkung: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 81-October 82. - II. Planned Activities, October 82-October 83. - References.
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  • 14
    Signatur: ZSP-SCAR-570-3
    In: National Antarctic Research Report to SCAR, No. 3
    Materialart: Schriftenreihen ausleihbar
    Seiten: 16 Seiten
    ISSN: 0179-0072
    Serie: National Antarctic Research Report to SCAR 3
    Sprache: Englisch
    Anmerkung: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 80-October 81. - II. Planned Activities, October 81-October 82. - References.
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  • 15
    Monographie ausleihbar
    Monographie ausleihbar
    Leipzig : VEB Deutscher Verlag für Grundstoffindustrie
    Signatur: 8174
    Materialart: Monographie ausleihbar
    Seiten: 246 Seiten , Illustrationen
    Ausgabe: 1. Auflage
    ISBN: 3871446270
    Sprache: Unbestimmte Sprache
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 16
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-84/32
    In: CRREL Report, 84-32
    Beschreibung / Inhaltsverzeichnis: Orwell Lake, in west-central Minnesota, is a flood-control, water-management reservoir first impounded in 1953. Subsequent erosion of the shoreline and a lack of knowledge of slope erosion processes in this region prompted this study to identify and quantify the processes there. The processes were measured at selected sites between June 1980 and June 1983. Erosion of the banks is primarily caused by three processes: rain, frost thaw, and waves. The first two processes tend to move sediment to the base of the steep slopes, forming 4 relatively gentle surface of accumulation. Wave action then tends to move this sediment into the lake. Analysis of the data collected over three years has confirmed that wave action is the dominant erosion process, providing almost 77% of the erosion during the 1981-82 study year. During the 1981 high pool level, 2,089 Mg of sediment, mostly colluvium, was removed from the lower slopes by wave action striking the 1.62 km of eroding shoreline. More than 4,300 Mg was eroded by waves accompanying the higher pool levels of 1982., During years in which the pool level does not exceed 325.5 m in elevation, the colluvium slope builds up at the expense of the steeper slope. But during successive years with higher pool levels, the resulting thin colluvium is quickly eroded. Erosion of the primary sediment, a compact till, then occurs, forming the S typical nearly vertical banks. In winter the upland surface adjacent to the lake freezes to a depth of between 1 and 2 m, depending on the surface temperature, the mow cover, and the distance from exposed banks. In late winter soil aggregates, released by the sublimation of interstitial ice within the banks, begin to accumulate at the base of the slopes, often veneering snowbanks there. Once thaw begins, slab failure of bank sediment is followed by mudflows and earthflows. Thaw failure at Orwell Lake in the winter of 1981-82 accounted for over 20% of the erosion; in the spring of 1982, 824 Mg was eroded by this process and 746 Mg the following spring. Such slope failure is most intense along north-facing banks and considerably less intense on south-facing banks, where more effective desiccation and sublimation reduce the soil moisture content. Summer rainfall is responsible for the remaining 3% of the total erosion, amounting to 102 Mg in 1981 and 208 Mg in 1982. Because the banks are steep and relatively short, rainwash is infrequent; rainsplash is the most consistent process during the summer, but the infrequent storms during which rainwash occurscause greater total erosion. Erosion by rain has increased in each of the past three summers, largely because of increased precipitation. Infrequent massive slope failures (slumps) have occurred at the east end of the lake where a buried clay rich unit is stratigraphically and topographically positioned to favor such failures. Drought years followed by heavy spring rains probably will result in additional slope failures of this type at the east end. Unless changes are made, the banks at Orwell Lake will continue to recede. Restriction of the pool level to less than 325.5-m elevation is the least expensive solution to the problem.
    Materialart: Schriftenreihen ausleihbar
    Seiten: ix, 110 Seiten , Illustrationen
    Serie: CRREL Report 84-32
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Summary Chapter 1. Introduction Location Purpose of study Previous work Chapter 2. Methodology Geology Overland erosion Wave erosion Frost penetration and heave Thaw failure Bank recession Ground water Soil moisture Chapter 3. Results Geology Geotechnical properties Overland erosion Wave erosion Freeze-thaw phenomena Ground water fluctuations Other slope failures Chapter 4. Discussion Overland erosion Wave erosion Thaw failure Universal soil loss equation Chapter 5. Summary and conclusions Techniques Erosion processes at Orwell lake Bank recession Literature cited Appendix A1: Average cumulative change of surface at erosion stations #2-12, 1980-81 Appendix A2: Cumulative net changes at overland erosion stations #1-12, 1980-81 Appendix A3: Cumulative net changes at overland erosion stations #1 -12, 198 1-82 Appendix A4: Cumulative average erosion at overland erosion stations #1-12, 1980-81 Appendix AS: Cumulative average erosion at overland erosion stations #1-12, 1981-82 Appendix A6: Cumulative average erosion at overland erosion stations #1 -1 2A, 1982 Appendix B: Dimensions of erosion sections, Orwell Lake, Minnesota Appendix C: Piezometer installation data, Orwell Lake, Minneso
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  • 17
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-84/26
    In: CRREL Report, 84-26
    Beschreibung / Inhaltsverzeichnis: Observations of shore ice pile-up and ride-up along the Alaska Beaufort Sea coast in 1983 and 1984 are presented. New information on historical accounts of onshore ice movement, uncovered since publication of Part I in this series, is reported. An account is given of ice overtopping a concrete caisson exploration island in the Canadian Beaufort Sea.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 33 Seiten , Illustrationen
    Serie: CRREL Report 84-26
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Observations Discussion Literature cited Appendix A: Site location maps
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  • 18
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/33
    In: CRREL Report, 82-33
    Beschreibung / Inhaltsverzeichnis: Arctic sea ice is freckled with melt ponds during the ablation season; Antarctic sea ice has few, if any. On the basis of a simple surface heat budget, we investigate the meteorological conditions necessary for the onset of surface melting in an attempt to explain these observations. The low relative humidity associated with the relatively dry winds off the continent and an effective radiation parameter smaller than that characteristic of the Arctic are primarily responsible for the absence of melt features in the Antarctic. Together these require a surface-layer air temperature above 0 C before Antarctic sea ice can melt. A ratio of the bulk transfer coefficients C sub H/C sub E less than 1 also contributes to the dissimilarity in Arctic and Antarctic ablation seasons. The effects of wind speed and of the sea-ice roughness on the absolute values of C sub H and C sub E seem to moderate regional differences, but final assessment of this hypothesis awaits better data, especially from the Antarctic.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 16 Seiten , Illustrationen
    Serie: CRREL Report 82-33
    Sprache: Englisch
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  • 19
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/41
    In: CRREL Report, 82-41
    Beschreibung / Inhaltsverzeichnis: Many of the important factors influencing the choice of appropriate aquifer test procedures are presented. The concepts of bias, accuracy and spatial variabil­ity are explained. The definitions of a number of aquifer parameters are devel­oped from basic principles demonstrating the underlying assumptions and limita­tions. The parameters considered are: piezometric head, hydraulic conductiv­ity/intrinsic permeability, flow direction, specific discharge magnitude, transmissivity, volumetric flow rate, total porosity, effective porosity, aver­age linear velocity, storage coefficient, specific yield, dispersion coefficient-aquifer dispersivity. For each parameter several techniques are described, evaluated and ranked in terms of perceived potential accuracy, simplicity and value to contaminant transport studies. It must be stressed, however, that the evaluations are based principally upon theoretical grounds, and not upon actual conduct of the described procedures.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 111 Seiten , Illustrationen
    Serie: CRREL Report 82-41
    Sprache: Englisch
    Anmerkung: CONTENTS Abstrac Preface Introduction Purpose Scope Concept of accuracy Test selection Definition of parameters Piezometric head Use of piezometers Hydraulic conductivity Flow direction Specific discharge magnitude Transmissivity Volumetric flow rate Porosity Average linear velocity Storage coefficient-specific yield Aquifer dispersivity Parameter estimation techniques Piezometric head Hydraulic conductivity Direction and magnitude of specific discharge vector Transmissivity Volumetric flow rate Total porosity Average linear velocity Storage coefficient Specific yield Effective porosity Aquifer dispersivity-dispersion coefficients Conclusions Literature cited
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  • 20
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/13
    In: CRREL Report, 83-13
    Beschreibung / Inhaltsverzeichnis: A review on past experimental and theoretical work indicates a need for additional experimentation to characterize the response of snow to inelastic pressure waves. Pressure data from previously conducted explosion tests are analyzed to estimate the elastic limit of snow of 400 -kg/cu m density to be about 36 kPa. This pressure corresponds to a scaled distance of 1.6 m/cu.rt.kg for charges fired beneath the surface of the snow, and to a scaled distance of 1.2 m/cu.rt.kg for charges fired in the air. The effects of a snow cover on the method of clearing a minefield by using an explosive charge fired in the air above the snow surface are also discussed and recommendations are given for further work in this area. Explosive pressure data are used to estimate the maximum effective scaled radius for detonating buried mines at shallow depth to be 0.8 m/cu.rt.kg. Fuel-air explosive will increase this effective radius significantly because of the increase in the size of the source region.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 33 Seiten , Illustrationen
    Serie: CRREL Report 83-13
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface List of symbols Introduction Objectives Background Problems in describing the response of snow to an applied stress Methods of determining the dynamic behavior of materials Review of previous studies on snow Experimental measurements on snow Summary of snow experiments Theoretical studies Confirmation of the theory Discussion Applications Recommendations Summary Literature cited Appendix A. Selected data from Wisotski and Snyder (1966) Appendix B. Pressure data from Livingston (1964)
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  • 21
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/14
    In: CRREL Report, 83-14
    Beschreibung / Inhaltsverzeichnis: An analysis of ice fracture that incorporates dislocation mechanics and linear elastic fracture mechanics is discussed. The derived relationships predict a brittle to ductile transition in polycrystalline ice under tension with a Hall-Petch type dependence of brittle fracture strength on grain size. A uniaxial tensile testing technique, including specimen preparation and loading system design was developed and employed to verify the model. The tensile strength of ice in purely brittle fracture was found to vary with the square root of the reciprocal of grain size, supporting the relationship that the theory suggests. The inherent strength of the ice lattice and the Hall-Petch slope are evaluated and findings discussed in relation to previous results. Monitoring of acoustic emissions was incorporated in the tests, providing insights into the process of microfracture during ice deformation.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 43 Seiten , Illustrationen
    Serie: CRREL Report 83-14
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Background Development of testing technique Test specimens Tensile testing Compression testing Experimental results Tensile tests Compression tests Discussion Conclusions Suggestions for further work Literature cited Appendix A: Additional information on seed grains Appendix B: Thin-sectioning procedure Appendix C: Displacement transducer calibration
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  • 22
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/16
    In: CRREL Report, 83-16
    Beschreibung / Inhaltsverzeichnis: The presence of snow on the ground can impose limitations on the mobility of wheeled and tracked vehicles. Snow depth and density are the two most easily measured snow properties that can be related to mobility over snow. Existing models of snowpack accumulation and ablation processes and models of internal snowpack structure were examined to determine if a model of the snowpack can be developed for use in predicting the snow parameters that affect mobility. Simple models, such as temperature index models, do not provide sufficient snowpack details, and the more detailed models require too many measured inputs. Components of the various models were selected from a basis of a snowpack model for predicting snow properties related to mobility over snow. Methods of obtaining the input data from some components are suggested, and areas where more development is needed are described.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 34 Seiten , Illustrationen
    Serie: CRREL Report 83-16
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Conversion of metric units Introduction Review of existing models Accumulation models Ablation models Using existing models for studying mobility Proposed snowpack model for mobility studies Model components Implementation of the model Developing input data Conclusions Literature cited
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  • 23
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/17
    In: CRREL Report, 83-17
    Beschreibung / Inhaltsverzeichnis: A sea ice model was applied to the East Greenland Sea to examine a 60-day ice advance period beginning 1 October 1979. This investigation compares model results using driving geostrophic wind fields derived from three sources. Winds calculated from sea-level pressures obtained from the National Weather Service's operational analysis system resulted in strong velocities concentrated in a narrow band adjacent to the Greenland coast, with moderate velocities elsewhere. The model showed excessive ice transport and thickness build-ups in the coastal region. The extreme pressure gradient parallel to the coast resulted partially from a pressure reduction procedure that was applied to the terrain-following sigma coordinate system to obtain sea-level pressures. Additional sea-level pressure fields were obtained from an independent optimal interpolation analysis that merged FGGE buoys drifting in the Arctic basin with high latitude land stations and from manual digitization of the NWS hand-analyzed Northern Hemisphere Surface Charts. Modeling results using winds from both of these fields agreed favorably.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 19 Seiten , Illustrationen
    Serie: CRREL Report 83-17
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Description of study Model results The problem Conclusions Literature cited
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  • 24
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/32
    In: CRREL Report, 83-32
    Beschreibung / Inhaltsverzeichnis: Ice forces on a bridge pier in the Ottauquechee River, in Quechee, Vermont, were measured by installing fourpanels-each capable of measuring forces in the normal and tangential direction - on both sides of a vertical V-shaped pier nose. The measured forces are presented for a short period during an ice run. After the ice run, the thickness and sizes of the ice floes were measured and the compressive strength of the ice was determined in the laboratory from the ice samples collected along the river banks. The water level measurements made at several locations along theriver are also presented for the period of the ice run.
    Materialart: Schriftenreihen ausleihbar
    Seiten: ii, 8 Seiten , Illustrationen
    Serie: CRREL Report 83-32
    Sprache: Englisch
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  • 25
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-84/2
    In: CRREL Report, 84-2
    Beschreibung / Inhaltsverzeichnis: Investigations of the in situ complex dielectric constant of sea ice were made using time-domain spectroscopy. It was found that (1) for sea ice with a preferred horizontal crystal c-axis alignment, the anisotropy of polarizing properties of the ice increased with depth, (2) brine inclusion conductivity increased with decreasing temperature down to about -8 C, at which point the conductivity decreased with decreasing temperature, (3) the DC conductivity of sea ice increased with increasing brine volume, (4) the real part of the complex dielectric constant is strongly dependent upon brine volume but less dependent upon the brine inclusion orientation, (5) the imaginary part of the complex dielectric constant was strongly dependent upon brine inclusion orientation but much less dependent upon brine volume. Because the electromagnetic (EM) properties of sea ice are dependent upon the physical state of the ice, which is continually changing, it appears that only trends in the relationships between the EM properties of natural sea ice and its brine volume and brine inclusion microstructure can be established.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 38 Seiten , Illustrationen , 1 Beilage
    Serie: CRREL Report 84-2
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Dielectric properties of sea ice Time-domain spectroscopy measurement Laboratory measurements Field measurements Analysis of ladder data Conductivity of brine and sea ice Complex dielectric constant of brine and sea ice Discussion and conclusions Literature cited
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  • 26
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/33
    In: CRREL Report, 83-33
    Beschreibung / Inhaltsverzeichnis: A thermodynamic model has been developed that for the first time describes the entire creep process, including primary, secondary, and tertiary creep, and failure for both constant stress (CSR) tests (σ= const.) and constant strain rate (CSR) tests (ϵ = const.), in the form of a unified constitutive equation and unified failure criteria. Deformation and failure areconsidered as a single thermoactivated process in which the dominant role belongs to the change of entropy. Failure occurs when the entropy change is zero. At that moment the strain rates in CS tests reach the minima and stress in CSR tests reaches the maximum (peak) values. Families of creep (ϵ vs τ) and stress-strain (σ vs ϵ) curves, obtained from uni-axial compression CS and CSR tests of frozen soil, respectively (both presented in dimensionless coordinates), are plotted as straight lines and are superposed, confirming the unity of the deformation and failure process and the validity of the model. A method is developed for determining the parameters of the model, so that creep deformation and the stress-strain relationship of ductile materials such as soils can be predicted based upon information obtained from either type of test.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 25 Seiten , Illustrationen
    Serie: CRREL Report 83-33
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Nomenclature Introduction Principal relationships Constitutive equation Failure criteria Secondary creep: Flow equations Creep at constant stress (σ = Const.) Creep model Creep strain (σ = Const.) Creep at constant strain rate (ϵ = Const.) Stress-strain relationship Stress/strain/strain rate at failure Test data Preliminary analysis Constant stress tests (σ = Const.) Constant strain rate tests (ϵ = Const.) The principle of superposition Thermodynamic equation of creep Conclusions Literature cited
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  • 27
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-84/3
    In: CRREL Report, 84-3
    Beschreibung / Inhaltsverzeichnis: The results of resistance tests in level ice and broken ice channels are presented for two models of the WTGB 140-fticebreaker at scales of 1:10 and 1:24, respectively. No scale effect on the resistance in level ice could be detected between the two models. From the test results an empirical predictor equation for the full scale ice resistance is derived. Predicted resistance is compared against, and found to be 25 to 40% larger than, available full-scale values estimated from thrust measurements during full-scale trials of the Great Lakes icebreaker Katmai Bay.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 25 Seiten , Illustrationen
    Serie: CRREL Report 84-3
    Sprache: Englisch
    Anmerkung: COTENTS Abstract Preface Nomenclature Introduction Model characteristics and test conditions Ice-hull coefficient of friction Measurements of ice properties Experimental procedures Data acquisition system Test program and procedures for 1:10 model Test program and procedures for 1:24 model Analysis of test results Comparison of test results between 1:10 and 1:24 models Analysis of tests in broken or brash-filled ice channels Analysis of tests in level ice Full-scale prediction of level ice resistance Conclusions Literature cited
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  • 28
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-84/12
    In: CRREL Report, 84-12
    Beschreibung / Inhaltsverzeichnis: Icing on stationary structures such as oil rigs is becoming an increasingly serious problem as offshore drilling operations in the subpolar regions become more common. Little information exists on this subject. Extensive observations have been made of icing on the upper structures of moving ships, but the complexity of this problem makes analysis of the results very difficult. Even the generation of water drops in this case involves many factors, such as windspeed, wave direction relative to the bearing of the ship, and size and free-board of the ship. On stationary structures, however, the problem is much simpler, since the major factor in drop generation is whitecaps produced by wind, and no motion of the structure is involved. In the present study, a theoretical calculation was made by combining the data available on the generation of drops by wind with data on the proportion of ice frozen from the collected water. The rate of ice accumulation on stationary structures was calculated using published data. The results were compared with icing measured on board ships. Although the general trend of this calculation indicated parallelism with the onboard measurements, the measured ice accumulation rate on ships needed a 5 to 8 m/s higher windspeed to correspond with the calculated rate for stationary structures.
    Materialart: Schriftenreihen ausleihbar
    Seiten: ii, 13 Seiten , Illustrationen
    Serie: CRREL Report 84-12
    Sprache: Englisch
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  • 29
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-84/11
    In: CRREL Report, 84-11
    Beschreibung / Inhaltsverzeichnis: Data obtained from two sets of data buoys either air-dropped or deployed by ship onto the Weddell Sea pack ice during the period from Dec 1978 to Nov 1980 are presented. The buoy data include position, pressure and temperature information and to date represent the most complete combined weather and pack ice drift records for the ice-covered Southern Ocean regions. The buoys tended to drift north initially and then to turn east generally between latitudes 62°S and 64°S. Buoy 1433 turned east farther south at approximately 67°S but at about the same time as buoy 0527, implying that the westerly wind belt was farther south than usual in 1979. The range of air pressures-from about 950 mb to about 1020 mb is typical of the circumpolar low pressure trough in the Southern Hemisphere. All buoys were equipped with an internal or compartment temperature sensor. The 1980 buoys also contained an external air temperature sensor in a ventilated, shielded can at 1-m height. Although differences of 10°C or more between recorded air and compartment temperatures are common, the correlation between the two measured temperatures is generally very good. The compartment temperatures are higher probably because the buoy is radiationally heated. We found that subtracting 3°C from the average daily compartment temperature yielded a good estimate of the average air temperature for any given day. This technique can be used to construct average daily air temperature records for the 1979 buoys which only contained the internal or compartment temperature sensor.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 21 Seiten , Illustrationen
    Serie: CRREL Report 84-11
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Methods and instrumentation Results Drift tracks Pressure data Temperature data Discussion Conclusions Literature cited
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  • 30
    Signatur: ZSP-201-84/9
    In: CRREL Report, 84-9
    Beschreibung / Inhaltsverzeichnis: This report presents the results of the first phase of a test program designed to obtain a comprehensive understanding of the mechanical properties of multi-year sea ice from the Alaskan Beaufort Sea. In Phase I, 222 constant-strain-rate uni-axial compression tests were performed on ice samples from ten multi-year pressure ridges to examine the magnitude and variation of ice strength within and between pressure ridges. A limited number of constant-strain-rate compression and tension tests, constant-load compression tests, and conventional triaxial tests were also performed on ice samples from a multi-year floe to provide preliminary data for developing ice yield criteria and constitutive laws for multi-year sea ice. Data are presented on the strength, failure strain, and modulus of multi-year sea ice under different loading conditions. The statistical variation of ice strength within and between pressure ridges is examined, as well as the effects of ice temperature, porosity, structure, strain rate and confining pressure on the mechanical properties of multi-year sea ice.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 107 Seiten , Illustrationen
    Serie: CRREL Report 84-9
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Field Sampling Site selection and description Ice sampling procedures Shipping and storage of ice samples Testing Techniques Multi-year Pressure Ridge Tests Ice description Sampling scheme and test variables Uniaxial compressive strength Residual compressive strength Failure strains Initial tangent modulus Statistical Variations in Ice Strength Differences in strength above and below level ice Sources of the variation in strength Shape of the strength histograms Multi-year Floe Ice Tests Ice description Uniaxial compressive strength Constant-load compression tests Constant-strain-rate tension tests Triaxial tests Conclusions Literature Cited Appendix A: Structural profile of a multi-year pressure ridge core Appendix B: Ridge uniaxial compression test data Appendix C: Structural profile of the continuous multi-year floe core Appendix D: Multi-year floe test data
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  • 31
    Monographie ausleihbar
    Monographie ausleihbar
    Leipzig : Academy of Sciences of the GDR, Central Institute for Isotope and Radiation Research
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    Signatur: AWI G6-19-93042-2
    In: Interregional Training Course on Radiochemistry, [Supplement]
    Materialart: Monographie ausleihbar
    Seiten: 88 Seiten , Illustrationen
    Sprache: Englisch
    Anmerkung: Contents Manual 2.2 The relative measurement of aktivity Lectures 1.3 Statistics / H. Baumbach 2.2 Sealed sources / K. Vormum 2.4 Energy dispersive x-ray fluorescence analysis / H.-K. Bothe 3.1 The use of carriers / H. Koch 4.3 Autoradiography / K. Freyer 6.1 Radiometric methods in environmental control / H.-J. Große
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  • 32
    Monographie ausleihbar
    Monographie ausleihbar
    Leipzig : Academy of Sciences of the GDR, Central Institute for Isotope and Radiation Research
    Dazugehörige Bände
    Signatur: AWI G6-19-93042-1
    In: Interregional Training Course on Radiochemistry, [Hauptband]
    Materialart: Monographie ausleihbar
    Seiten: 248 Seiten , Illustrationen
    Sprache: Englisch
    Anmerkung: Contents Manual 1.1 Beta measurements 1.2 Measurement of the energy spectrum and range of α-radiation with semiconductor detectors 1.3 Error and statistical tests 1.4 Basic experiments of gamma spectroscopy 2.1 Determination of certain elements in sedimental atmospheric dust by x-ray fluorescence analysis 2.2 Calibration and efficiencies (see Supplement) 2.3 Thin-layer chromatographic separation and test of the purity of labelled compounds 2.4 Separation of Thorium-234 from Uranium-238 2.5 Separation of 137Ca/137mBa by precipitation and sorption 3.1 Determination of phosphate by simple isotope dilution analysis and determination of Zn in MgSO4 by substoichiometric isotope dilution analysis 3.2 The Szilard-Chalmers effect 3.3 Determination of the Ag content in slags by instrumental neutron activation analysis 4.1 Isotope exchange of Ethyl Iodide and Sodium Iodide 4.2 Liquid scintillation counting of Carbon-14 and Tritium 4.3 Autoradiography - Demonstration of Autoradiographic techniques Lectures 1.1 Fundamentals of radioactivity / G. K. Vormum 1.2 Interaction of nuclear radiation with matter / G. K. Vormum 1.4 Equations of radioactive decay / G. K. Vormum 1.5 Radiation detectors / M. Geisler 2.1 Radiation spectroscopy / M. Geisler 2.5 Handling of radioisotopes / G. K. Vormum 2.7 Behaviour of radionuclides in very low concentrations / H. Koch 3.6 Particle sources / J. W. Leonhardt 4.2 Tracers in chemical kinetics / J. Dermietzel 4.4 Liquid Scintillation Counting (LSC) / R. Trettin 5.1 Isotopic tracers in biology / H. Hübner 5.2 Low-level counting / R. Trettin 5.4 Basic concepts of radioimmunoassay (RIA) / G. K. Vormum 6.2 Radionuclide generators / R. Otto
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  • 33
    Monographie ausleihbar
    Monographie ausleihbar
    Silver Spring : Central Pacific Hurricane Center
    Signatur: MOP 45480
    Materialart: Monographie ausleihbar
    Seiten: V, 137 Seiten
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
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  • 34
    Monographie ausleihbar
    Monographie ausleihbar
    Washington, D.C. : National Advisory Committee on Oceans and Atmosphere
    Signatur: MOP 45479 / Mitte
    Materialart: Monographie ausleihbar
    Seiten: II, 28 Seiten
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 35
    Signatur: MOP 45321 / Mitte
    In: Antarctic research activities of the German Democratic Republic
    Materialart: Monographie ausleihbar
    Seiten: 13 Seiten
    Serie: Antarctic research activities of the German Democratic Republic : report to SCAR No 3
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
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  • 36
    Signatur: MOP 45321 / Mitte
    In: Antarctic research activities of the German Democratic Republic
    Materialart: Monographie ausleihbar
    Serie: Antarctic research activities of the German Democratic Republic : report to SCAR No 5
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 37
    Signatur: MOP 45206 / Mitte
    In: Daily Global Analyses
    Materialart: Monographie ausleihbar
    Seiten: 5, 368 Seiten , graphische Darstellungen
    Serie: Daily Global Analyses Part 1
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 38
    Signatur: MOP 45206 / Mitte
    In: Daily Global Analyses
    Materialart: Monographie ausleihbar
    Seiten: 6, 371 Seiten , graphische Darstellungen
    Serie: Daily Global Analyses Part 3
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 39
    Signatur: MOP 45287 / Mitte
    Materialart: Zeitschrift ausleihbar
    Seiten: Seiten 87-222
    ISSN: 0001-513x , 0541-9425
    Serie: Acta Agronomica Academiae Scientiarum Hungaricae 30
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
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  • 40
    Monographie ausleihbar
    Monographie ausleihbar
    Denver : Water and Power Resources Service
    Signatur: MOP 46084 / Mitte
    Beschreibung / Inhaltsverzeichnis: This document is a report of research, design, environmental, coordination, and public involvement activities of the Water and Power Resources Service SCPP (Sierra Cooperative Pilot Project). The SCPP ia an investigation of the technical feasibility and social acceptability of winter cloud seeding in the Sierra Nevada to supplement the region's future water supply. This report explains the results of the 1979-80 winter field season and reviews research undertaken by the SCPP in previous seasons.
    Materialart: Monographie ausleihbar
    Seiten: vi, 72 Seiten , Illustrationen, Karten
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 41
    Monographie ausleihbar
    Monographie ausleihbar
    Geneva : United Nations Environment Programme
    Signatur: MOP 45806 / Mitte
    Materialart: Monographie ausleihbar
    Seiten: v, 86 Seiten , Illustrationen, Karten
    Serie: UNEP Regional Seas Reports and Studies 12
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 42
    Monographie ausleihbar
    Monographie ausleihbar
    Boston, Mass. : American Meteorological Society
    Signatur: MOP 45485 / Mitte
    Materialart: Monographie ausleihbar
    Seiten: iv, 322 Seiten , Illustrationen, Diagramme
    ISBN: 0933876513
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 43
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-82/18
    In: CRREL Report, 82-18
    Beschreibung / Inhaltsverzeichnis: Snow and ice control on highways has come to rely heavily on the use of sodium chloride to maintain a trafficable surface for unimpeded movement. Empirical approaches have led to a wide range of application rates, some clearly excessive, but justified on the ground of safety and expediency. The combination of environmental degradation from the huge quantities of salt entering the environment, along with the increased cost of salt itself and the cost of its application have spurred the search for more precise knowledge of the proper amount of salt to apply to a pavement, considering a range of environmental, traffic and chemical parameters. Since controlled tests in the field are extremely difficult to make, a circular test track of three test pavements, dense-graded asphaltic concrete (DGA), open-graded asphaltic concrete (DGA) and portland cement concrete (PCC), was constructed in a coldroom. Natural snow and ice were applied to the pavements and an instrumented slipping wheel was driven over the surfaces to generate frictional forces. These forces were measured and then used to evaluate the response to salt application with time for three test temperatures. OGA had the lowest friction values at a temperature near the freezing point, but higher initial values or more rapidly increasing values than DGA and PCC following salt application at the two lower temperatures. Optimum application rate of salt on PCC and DGA lies between 100 and 300 lb/lane mile (LM), and a higher rate resulted in slight or no improvement in friction. DGA showed anomalous results: lower friction for 300 Ib/LM and higher friction for both 100 and 500 Ib/LM.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 55 Seiten , Illustrationen
    Serie: CRREL Report 82-18
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Objectives Background Approach Influencing factors Field factors Laboratory Laboratory trafficking tests Force measurement and coefficient of friction Test tire slip Surface friction gauge Test procedure British portable tester Experimental results Conclusions Recommendations Literature cited Appendix A. Test pavements Appendix B. Pennsylvania State University field study Appendix C. Rochester Institute of Technology field study
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  • 44
    Signatur: ZSP-201-82/15
    In: CRREL Report, 82-15
    Beschreibung / Inhaltsverzeichnis: An experiment is described that demonstrates the balance between the ice and the unfrozen water in a frozen soil as water is removed. Nuclear magnetic resonance (NMR) is used to monitor the unfrozen water content as the soil is dehydrated by a molecular sieve material. Our results show that the unfrozen water content of a Morin clay soil remains constant until the total water content has been reduced to the point where no ice remains in the system. Once the ice is depleted, the unfrozen water content determined by NMR corresponds to the total water content of the soil determined by the weight of water removed by the molecular sieve material. Thus the validity of utilizing NMR in determining unfrozen water contents vs temperature is established.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 8 Seiten , Illustrationen
    Serie: CRREL Report 82-15
    Sprache: Englisch
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  • 45
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-82/8
    In: CRREL Report, 82-8
    Beschreibung / Inhaltsverzeichnis: A detailed analysis of methods for calculating the thermal conductivity of soils is presented, and trends in the predic­tions of these methods are compared. The influence of changes in the moisture content on the calculated thermal con­ductivity of a soil (at constant dry density) is shown, as is the sensitivity of this calculated value to changes in dry den­sity or in the soil solids’ thermal conductivity. The methods are evaluated to determine the extent of agreement of their predictions with measured values obtained on soils of known composition and properties. The deviations of the predicted values are determined for soils that are unfrozen or frozen, coarse or fine, unsaturated, saturated or dry. The applicability of each of the methods under various conditions is determined and recommendations are made as to the best method for each condition.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 90 Seiten , Illustrationen
    Serie: CRREL Report 82-8
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Analysis of methods for calculating thermal conductivity Introduction Influence of moisture content on thermal conductivity Influence of dry density on thermal conductivity Influence of soil solids’ thermal conductivity Comparison of the various methods Evaluation of methods for calculating thermal conductivity Soils data used for evaluation Computer program Applicability of the methods Discussion and conclusions Applicability to unfrozen soils Applicability to frozen soils Applicability to saturated soils Effect of soil mineral composition Applicability to dry soils Summary of applicability of methods Literature cited Appendix A: Properties of some test soils Appendix B: Comparison of thermal conductivity values computed by the various methods and of their deviations from the values measured
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  • 46
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Moscow : Academy of Sciences of the USSR, Soviet Committee on Antarctic Research
    Dazugehörige Bände
    Signatur: MOP 46294/B / Mitte
    In: USSR national report to SCAR, No. 26
    Materialart: Schriftenreihen ausleihbar
    Serie: USSR national report to SCAR 26
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 47
    Signatur: MOP 46292/A / Mitte
    In: United Kingdom Antarctic research report, 1983
    Materialart: Schriftenreihen ausleihbar
    Serie: United Kingdom Antarctic research report 1983
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 48
    Signatur: MOP 45619 / Mitte
    In: Meteorological Office, 492
    Materialart: Monographie ausleihbar
    Seiten: 281 Seiten , Illustrationen
    Serie: Meteorological Office /Great Britain 492
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 49
  • 50
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-80/20
    In: CRREL Report, 80-20
    Beschreibung / Inhaltsverzeichnis: Results of impulse radar studies of sea ice give support to the concept of a sea ice model in which the ice bottom is composed of an array of lossy parallel plate waveguides. The fundametal relation between the average bulk brine volume of sea ice and its electrical and strength properties is discussed as is the remote detection of under-ice current alignment. It was found that 1) the average effective bulk dielectric constant is dependent upon the average bulk brine volume of the sea ice; 2) sea ice anisotropy, arising from a bottom structure of crystal platelets with a preferred c-axis horizontal alignment, can be detected by radio echo sounding measurements made not only on the ice surface but also from an airborne platform; 3) the effective coefficient of reflection from the seaiIce bottom decreases with increasing average effective bulk dielectric constant of the ice, decreases with increasing bulk brine volume, and is typically one to two orders of magnitude lower dhan the coefficient of reflection from the ice surface; and 4) the losses In sea ice increase with increasing average bulk brine volume.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 18 Seiten , Illustrationen
    Serie: CRREL Report 80-24
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Field program Results and discussion Conclusions Literature cited Appendix: Data analysis procedures
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  • 51
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-80/16
    In: CRREL Report, 80-16
    Beschreibung / Inhaltsverzeichnis: Eight species of loricate choanoflagellates (Acanthoccidae), Acanthoecopsis spiculifera, Bicosta spinifera, Bicosta antennigera, Callicantha simplex, Calliacantha multispina aff., Crinolina aperta, Diaphanoeca multionnulata, and Parvicorbicula socialis, were observed in samples obtained from the Weddell Sea during the austral summer, 1977. D. multiannulata was described for the first time from these samples; the other organisms have either been described previously or are being described at this time. The distribution of most species within the Weddell Sea was widespread. The distributional, environmental, and morphological range of A. spiculifera, B. spinifera, C. aperta, and P. socialis was expanded. Habitats in which choanoflagellates were found included the water column, the edges of ice floes, ponds on ice floes, and the interiors of ice floes. The presence of choanoflagellates within the ice indicates that there may be a closely coupled trophic relationship with the other two biological components of the ice community, the ice algae and the bacteria. The presence in the ice of seven species with both a caudal appendage and anterior projections suggests a positive relationship between this lorica configuration and the ice habitat. Mechanisms of variance of transverse costal diameters between genera may be useful to the taxonomy and phylogeny of this family.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 26 Seiten , Illustrationen
    Serie: CRREL Report 80-16
    Sprache: Englisch
    Anmerkung: CONTENTS Introduction Literature review Objectives Materials and methods Results Observations Distribution and environmental tolerances Discussion Morphology Distribution Habitat Summary Conclusions Recommendations for future work Literature cited Appendix A Type descriptions of Acanthoecidae collected from the Weddell Sea
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  • 52
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-80/17
    In: CRREL Report, 80-17
    Beschreibung / Inhaltsverzeichnis: Construction pads made of snow were used to build two sections of the Trans Alaska Pipeline and a small gas pipeline during the winter of 1975-76. Construction during the winter has become increasingly common in the Arctic. Surface travel and the use of heavy construction equipment on the unprotected tundra have been severely restricted, even during the winter, so the use of temporary winter roads and construction pads built of snow and ice has been advocated and is being adopted. The three snow construction pads mentioned above were the first snow roads and construction pads used on a large scale in Alaska. Snow roads and construction pads have two objectives: to protect the underlying vegetation and upper layers of the ground, and to provide a hard, smooth surface for travel and the operation of equipment. Several types have been built, and a brief discussion is given of their history and classification systems. The three snow construction pads used in construction of the Trans-Alaska Pipeline and the small gas pipeline in 1975-76 were visited and observed while in use. The Globe Creek snow pad, about 50 miles north of Fairbanks, was built primarily of manufactured snow hauled to the site and watered. With very high densities this pad withstood heavy traffic and use by heavy construction equipment except on one steep slope. There, the use of tracked vehicles and vehicles without front wheel drive disaggregated the snow on and near the surface so that vehicles without front wheel drive were unable to climb the hill. The Toolik snow pad, just north of the Brooks Range, was built of compacted snow and proved capable of supporting the heaviest traffic and construction equipment. The fuel gasline snow pad ran from the northern Brooks Range to the Arctic Coast and also proved capable of supporting the necessary traffic. Both the Toolik snow pad and the fuel gasline snow pad failed in very early May because of unseasonably warm and clear weather before the associated construction projects were completed. However, the three snow pads must be considered successful. Common problems were the lack of snow, slopes, unseasonably warm spring weather, and inexperience on the part of contractors and construction personnel.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 28 Seiten , Illustrationen
    Serie: CRREL Report 80-17
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction History of snow and ice roads Classification of snow and ice roads Snow pads used by Alyeska during the winter of 1975-1976 The Globe Creek snow pad The Toolik snow pad The gasline snow pad Summary and conclusions Literature cited
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  • 53
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-80/13
    In: CRREL Report, 80-13
    Beschreibung / Inhaltsverzeichnis: Specimens prepared from various types of ice without introducing excessive defects were tested at temperatures ranging from -2° to -190°C. These tests indicated slightly higher Charpy values at lower temperatures and in more highly dispersed material concentrations. Three modes of fracture occurred during testing. Depending on the temperature and the material composition, either of the first two modes, normal fracture or multiple fracture, will appear and will show a normal frequency distribution of Charpy values in each type of ice. The third mode, fracture from both ends,which frequently occurred in the NH4F doped ice, gave Charpy values two to five times higher than the mean value for normal fracture. It can, therefore, be concluded that certain types of doping can alter the mode of fracture, through which drastic modifications of impact resistance my be possible.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 13 Seiten , Illustrationen
    Serie: CRREL Report 80-13
    Sprache: Englisch
    Anmerkung: Contents Abstract Preface lntroduction Experimental Sample preparation Testing procedure Results General features Commercial Ice Notched commercial ice Sanded commercial ice Pure ice Single crystal ice Snow-ice Colloidal alumina-dispersed ice Colloidal silica.dispersed ice NH4F doped ice HF doped ice Discussion Literature cited
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  • 54
    Signatur: MOP 45384/2 / Mitte
    Materialart: Monographie ausleihbar
    Seiten: Getrennte Zählung , Illustrationen
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 55
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-80/31
    In: CRREL Report, 80-31
    Beschreibung / Inhaltsverzeichnis: Ice accretion on structures built on the earth’s surface is discussed. Sources of water are the atmosphere or water bodies near or surrounding the structure. Ice types include frost, rime, glaze, and spray; properties and conditions governing their formation are presented. Methods of estimating accretion rates and total accretion on structures are given, and extracts from U.S. and Canadian codes for ice and wind loads on structures are included. Techniques for preventing or removing ice accretion are presented.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 18 Seiten , Illustrationen
    Serie: CRREL Report 80-31
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface 1. Types of ice accretion a. Frost b. Rime c. Glaze d. Spray ice 2. Conditions governing type of accreted ice a. Meteorological b. Structural 3. Accretion rates a. Fundamentals b. Effect of height c. Geographical distribution 4. Spray icing 5. Structural design factors a. Dead loads b. Wind field in the boundary layer c. Windloads 6. Techniques for minimizing structural icing 7. Data collection needs 8. Literature cited
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  • 56
    Signatur: MOP 45772/24 / Mitte
    In: South African Antarctic research report to SCAR, No. 24
    Materialart: Schriftenreihen ausleihbar
    Serie: South African Antarctic research report to SCAR 24
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 57
    Signatur: MOP 46293/B / Mitte
    In: United States Antarctic Research Report to SCAR, No. 24
    Materialart: Schriftenreihen ausleihbar
    Serie: United States Antarctic Research Report to SCAR 24
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 58
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Moscow : Academy of Sciences of the USSR, Soviet Committee on Antarctic Research
    Dazugehörige Bände
    Signatur: MOP 46294 / Mitte
    In: USSR national report to SCAR, No. 24
    Materialart: Schriftenreihen ausleihbar
    Serie: USSR national report to SCAR 24
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 59
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Moscow : Academy of Sciences of the USSR, Soviet Committee on Antarctic Research
    Dazugehörige Bände
    Signatur: MOP 46294/A / Mitte
    In: USSR national report to SCAR, No. 25
    Materialart: Schriftenreihen ausleihbar
    Serie: USSR national report to SCAR 25
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
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  • 60
    Signatur: M 96.0537/5 ; 15/13860/5
    In: Proceedings
    Materialart: Monographie ausleihbar
    Seiten: xiii, 1247 S.
    ISBN: 0132464063
    Klassifikation:
    B.5.
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
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  • 61
    Monographie ausleihbar
    Monographie ausleihbar
    Englewood Cliffs, N.J. : Prentice-Hall
    Dazugehörige Bände
    Signatur: M 96.0537/2 ; 15/13860/2
    In: Proceedings
    Materialart: Monographie ausleihbar
    Seiten: xii, 906 S.
    ISBN: 0132463725
    Klassifikation:
    B.5.
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
    Zweigbibliothek: GFZ Bibliothek
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  • 62
    Monographie ausleihbar
    Monographie ausleihbar
    Cambridge, Mass : MIT Press
    Signatur: IASS 16.90011
    Materialart: Monographie ausleihbar
    Ausgabe: Online-Ausg.
    ISBN: 0585374848 (electronic bk.) , 9780585374840 (electronic bk.) , 0262530457 (print)
    Paralleltitel: Print version Macroeconomics after Keynes
    Sprache: Englisch
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  • 63
    Monographie ausleihbar
    Monographie ausleihbar
    Boston : Beacon Press
    Signatur: IASS 16.90473
    Materialart: Monographie ausleihbar
    Seiten: XLII, 465 S. , graph. Darst.
    ISBN: 0807015067 (hbk) , 0807015075 (pbk) , 9780807015070 (pbk)
    Serie: The theory of communicative action Vol. 1
    Originaltitel: Handlungsrationalität und gesellschaftliche Rationalisierung 〈engl.〉
    Sprache: Englisch
    Zweigbibliothek: RIFS Bibliothek
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  • 64
    Signatur: MOP 47690 / Mitte
    Materialart: Monographie ausleihbar
    Seiten: 261 S. , Ill., graph. Darst., Kt.
    Serie: Reinhaltung der Luft 7
    Sprache: Unbestimmte Sprache
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
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  • 65
    Monographie Präsenzbestand
    Monographie Präsenzbestand
    Berlin : Behrend
    Dazugehörige Bände
    Signatur: MOP Per 492(1930) / DG
    In: Bericht über die Tätigkeit des Königlich Preußischen Meteorologischen Instituts ; 1930, 1930
    In: Veröffentlichungen des Preußischen Meteorologischen Instituts ; 380, Nr. 380
    Materialart: Monographie Präsenzbestand
    Seiten: 195 S. , Ill.
    Serie: Veröffentlichungen des Preußischen Meteorologischen Instituts 380
    Sprache: Englisch
    Anmerkung: Inhaltsverzeichnis: 1. Einleitung. - 2. Personalien. - 3. Das Stationsnetz. - Stationen I., II. und III. Ordnung und Stationen, die nur Sonnenschein beobachten. - Regenstationen. - Gewitterstationen. - 4. Wetterdienst. - 5. Sammlungen des Zentralinstituts. - Instrumente. - Bücherei. - 6. Besondere Arbeiten im Zentralinstitut. - 7. Das Meteorologisch-Magnetische Observatorium bei Potsdam. - Allgemeines. - Meteorologische Beobachtungen und Arbeiten. - Magnetische Arbeiten. - 8. Dienstreisen. - 9. Veröffentlichungen. - Veröffentlichungen des Instituts. - Fachwissenschaftliche Veröffentlichungen der Beamten. - Fachwissenschaftliche Veröffentlichungen der Stipendiaten. – Das Variationshaus in Niemegk / Ad. Schmidt. – Die elektrische Einrichtung des Variationshauses und des Absoluten Observatoriums Potsdam / R. Bock. – Die Ausbreitung und Auswirkung von Kältewellen in den zentralen Wüstengebieten Asiens im Winterhalbjahr / W. Haude. - Anzahl und Dauer der Frost- und Kälteperioden im mitteldeutschen Berglande / E. Reichel. – Nächtliche Temperaturanstiege an Hangstationen / J. Grunow. – Über mittlere Luftdruckkarten bei Föhnentwicklung im Inntal / E. Pernice. – Ein Beitrag zur Untersuchung niedriger Luftfeuchtigkeitswerte auf der Schneekoppe und auf dem Brocken / J. Hoffmeister. – Geschlossene und gebrochene Niederschlags- und Trockenperioden / A. Dieckmann. – Die Krümmung der Diskontinuitätsflächen in der Atmosphäre und im Ozean / H. Ertel. – Aus der Praxis der Sonnenstrahlungsmessungen am Meteorologischen Observatorium in Potsdam / W. Marten. - Die registrierende Kaliumzelle des Potsdamer Observatoriums / W. Kühl – Versuche zur monochromatischen Messung der ultravioletten Sonnenstrahlung / O. v. Schubert. – Einige neue Waagemagnet-Konstruktionen / O. Venske. - Über Messungen mit dem Doppelkompaß / G. Fanselau. - Temperatur, Niederschlag und Sonnenschein im Jahre 1930 nach den Beobachtungen der im Witterungsbericht erscheinenden Stationen.
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  • 66
    Monographie ausleihbar
    Monographie ausleihbar
    New York : Polis. Inst. of Arts and Sciences in America
    Signatur: PIK N 456-16-89763 ; MOP 40901 / Mitte
    Materialart: Monographie ausleihbar
    Seiten: 288 S. , Ill., graph. Darst., Kt.
    Serie: Polish Institute series 7
    Sprache: Englisch
    Standort: A 18 - Bitte bestellen
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: PIK Bibliothek
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 67
    Signatur: PIK N 453-26-90149
    Beschreibung / Inhaltsverzeichnis: Ohne Kurzreferat
    Materialart: Monographie ausleihbar
    Seiten: XVIII, 253 Seiten , graph. Darst., Kt , 1 eingeheftete Beil., 19 Tafeln im Schuber
    Ausgabe: 1st ed
    ISBN: 0080209254 (hbk) , 008020919X (pbk)
    Serie: Pergamon marine series 3
    Sprache: Englisch
    Standort: A 18 - Bitte bestellen
    Zweigbibliothek: PIK Bibliothek
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  • 68
    Monographie ausleihbar
    Monographie ausleihbar
    Catania : Instituto Internazionale di Vulcanologia
    Signatur: M 18.90520
    Materialart: Monographie ausleihbar
    Seiten: 205 Seiten , Illustrationen : , 2 Karten
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 69
    Signatur: ZSP-980-80
    In: ZfI-Mitteilungen, Nr. 80
    Materialart: Schriftenreihen ausleihbar
    Seiten: 158 Seiten , Illustrationen
    Ausgabe: als Manuskript gedruckt
    ISSN: 0323-8776
    Serie: ZfI-Mitteilungen 80
    Sprache: Deutsch , Russisch , Englisch
    Anmerkung: Inhaltsverzeichnis: ZUSAMMENFASSUNGEN DER VORTRÄGE. - Beiträge der Isotopengeologie zur Aufklärung des kontinentalen Wachstums / K. Wetzel. - Ein quantitatives Modell des Schwefelkreislaufes mit Berücksichtigung der Isotopenverhältnisse / G. Weise, K. Wetzel. - Die Prozesse der Stoffumwandlungen in den Anfangsstadien der Erbildung und die Isotopenzusammensetzung des endogenen Stickstoffs / W. F. Wolynez. - Problema juvenil'nosti v izotopnoj geologii / Ju. A. Borščevskij. - Zur Theorie von Isotopenaustauschgleichgewichten in komplizierten natürlichen Systemen / R. Haberlandt, G. Christoph. - Zur Berechnung und Interpretation natürlicher Isotopenvariationen in Alumosilikaten / G. Christoph. - The use of statistical mechanical perturbation theory for the calculation and interpretation of isotopic fractionation factors / M. Wolfsberg. - Relationship between anomalies in the relative abundance of 18O, 17O, 16O and anomalies in the temperature dependence of isotopic fractionation factors / M. Wolfsberg. - Metod rasčeta izotopnych effektov v prirodnych mineralach po približennoj modeli "Razdel'nych Kolebanin" / S. I. Gol'šev, N. L. Padalko. - Intramolekulare Sauerstoffisotopengeothermometrie an Hydrosilicaten / H. Schütze. - Der 18O-Index. Ein isotopengeochemisches Konzept / H. Schütze. - Matematičeskii analiz frakcionirovanija izotopov ugleroda v živoi kletke / A. A. Ivlev. - Anwendung der modifizierten Zelltheorie zur Berechnung von Zustandseigenschaften dichter isotopensubstituierter Fluide / H.-L. Vörtler, J. Heybey. - Statistisch-mechanische Behandlung der Unterschiede im Adsorptionsverhalten isotopischer Spezies / H. Heybey, H.-L. Vörtler. - Theoretische Untersuchungen zu Adsorptionsisotopieeffekten von Erdgaskomponenten unter erhöhten Drücken / J. Heybey, P. Harting. - Experimentelle Untersuchungen zu speziellen Adsorptionsisotopieeffekten unter geologischen Bedingungen / P. Harting, K. Weingart, H. Heybey. - Die Isotopenzusammensetzung (O, H, C, S, N) des Erdmantels / H. Hoefs. - Neodym- und Strontiumisotope und ihre Anwendung auf TR-Mineralisation / S. B. Brandt, W. S. Lepin, W. N. Solodjankina, T. I. Kolosnizyna. - Zur Veränderung der isotopischen Zusammensetzung des Sauerstoffs von Cherts und Carbonaten im Prozess der Diagenese/Metamorphose / O. Gebhardt, H. Schütze. - The isotopic study of Boron in the process of formation of ore deposits / V. I. Ustinov, V. A. Grinenko, S. M. Aleksandrov, T. R. Ivanova. - Temperaturnyj profil' redkometal'nogo mestoroždenija po izotopno-kislorodnym dannym / Ju. A. Borščevskij, S. N. Gavrikova, N. I. Medvedovskaja, V. Ja. Fedčuk. - Biogennye faktory forminrovanija izotopnogo sostava ugleroda organičeskogo veščestva porod facial'no-genetičeskogo tipa / A. A. Ivlev, R. G. Pankina, M. V. Dachnova. - Izotopnyj sostav ugleroda frakcij nefti i organičeskogo veščestva porod / M. G. Frik, Ė. M. Galimov. - Stable isotope ratios in natural gas components separated by gas chromatography / G. Hut. - C-Isotopenuntersuchungen zur Entwicklung des Altpaläozoikums im Thüringischen Schiefergebirge / K. Hahne, I. Maaß, H. Lützner, J. Ellenberg, F. Falk, E. Grumbt. - Isotopengeochemische, thermobarogeochemische und elementgeochemische Untersuchungen an einer hydrothermalen Fluorit-Mineralisaton aus dem Südteil der DDR / G. Strauch, H. Kämpf, R. Thomas, M. Geisler, G. Haase, G. Stiehl. - Untersuchungen zur Isotopenfraktionierung des Stickstoffs in den Systemen NH4+/NH3 und N3- /N2 / H.-M. Nitzsche, G. Stiehl. - δ15N-Profile in der Bodenzone und ihre zeitlichen Veränderungen / H. Hübner. - Izotopnyj sostav ugleroda karbonatov v mestoroždenijach samorodnoj sery / V. I. Kityk, B. I. Srebrodol'skij. - Untersuchungen zur Fraktionierung der Schwefelisotope bei der chemischen und biochemischen Oxydation von Sulfid zu Sulfat / I. Maaß, J. Heyer, K. Wetzel, G. Weise. - Selective determination of quantitative and isotopic composition of sulphur-minerals associations / V. I. Ustinov, V. A. Grinenko. - Untersuchungen zur CO2-Resorption aus thermoindifferenten Kohledioxidmineralwasserbädern durch die Haut des Menschen / G. Hübner, I. Maaß, C. Epperlein, G. Plötner, H. Jordan. - Frakcionirovanie izotopov ugleroda metanobrazujušimi bakterijami pri ich roste na različnych substratach / M. V. Ivanov, S. S. Beljaev, A. M. Ėjakun, V. A. Boidar', K. S. Laurinavičus, O. V. Šipin. - Izotopnyj sostav ugleroda metana, obrazuemogo mikroorganizmami v prirode / M. V. Ivanov, K. S. Laurinavičus, V. A. Bondar', S. S. Beljaev. - Isotopenhydrologische Untersuchungen - Arbeiten aus dem GSF-Institut für Radiohydrometrie / H. Moser. - Tritium im Niederschlag Antarktikas - Aussagen zur globalen Verteilung / D. Herbert. - Untersuchung der Beziehung der Deuteriumkonzentration zwischen atmosphärischem Wasserdampf und Niederschlägen im Gebiet der Schirmacheroase / Ostantarktis / P. Kowski. - Isotopenhydrologische und hydeochemische Charakterisierung von Seen im Gebiet der Schirmacher-Oase, Ostantarktika / W. Richter, U. Wand, G. Strauch, P. Kowski, W. Kurze. - Isotopenglaziologische Untersuchungen zur Klärung der Herkunft des Inlandeiskörpers südlich der Schirmacheroase / Ostantarktis / W.-D. Hermichen, P. Kowski. - Carbon-13 in atmospheric CO2: 1977-1981 / W. G. Mook, C. D. Keeling. - Anwendung von H2 18O auf ökologische und pflanzenphysiologische Fragestellungen / H. Förstel. - Komplexe Isotopenuntersuchungen an armenischen Mineralwässern / R. Trettin, A. Hiller, E. S. Chalatjan. - Die isotope Zusammensetzung des Kristallwassers von Carnalliten und ihrer Ausgangslösungen / H.-D. Schmiedl, K. Koch, T. Böttger, G. Stiehl, J. Pilot. - Zur hydrologischen Interpretation von Isotopendaten im Zusammenhang mit Stofftransportvorgängen / H. Jordan, D. Hebert, K. Fröhlich, R. Gellermann, R.-P. Schols. - Zwei neue Standards zur massenspektrometrischen Isotopenhäufigkeitsbestimmung von Wasserstoff, Kohlenstoff und Sauerstoff im Bereich natürlicher Häufigkeiten / M. Herrmann, H. Gerstenberger. - Methoden der chemischen Konzentrierung und Identifizierung bei der Suche nach seltenen Radionukliden in der Natur / H. Bruchertseifer. - Die Anwendung der ultraempfindlichen Massenspektrometrie zur Isotopenanalytik / H.-J. Dietze, S. Becker. - Möglichkeiten des Nachweises superschwerer Elemente mit massenspektrometrischen Methoden / S. Becker, H.-J. Dietze. - Isotope analysis on nano-mole gas samples / S. Hałas. - Neue Möglichkeiten zur Freisetzung von Messgasen für die massenspektrometrische Isotopenanalysis aus Feststoffen / G. Müller, D. Hessel, H. Zahn, K. Mühle. - Die Kontrolle der Standardmeßbedingungen bei C-14-Datierungen / J. Görsdorf. - Raspredelenie izotopa 14C v različnych uglerodsoderžaščich materialach i frakcijach paleopočv v svjazi s geologičeskimi uslovijami zachoronečnija / L. A. Orlova, V. A. Panyčev, I. V. Nikolaeva. - Some variations in the isotopic composition of uranogenic and thorogenic lead and their significance for investigations of geochronology and genesis of ore and rocks / B. G. Amov. - Neue Daten für die Beiisotopenverhältnisse in Feldspäten aus dem Kristallinkomplex, den Graniten und Erzen Südbulgariens / B. Amow, V. Arnaudow, Z. Baldjiewa, M. Pawlowa. - 40Ar/39Ar-Altersspektren eines Biotits / G. Kaiser, J. Pilot. - Kalium-Calcium-Isochronen für Sylvinite des sibirischen Tafellandes / W. S. Lepin, T. W. Jegorowa, S. B. Brandt. - Beitrag zur Klärung der Genese west- und mittelerzgebirigischer Granite anhand von SR-87/SR-86-Verhältnissen / H. Gerstenberger, G. Haase. - Zur geochronologisch-genetischen Modellierung von Granitoiden im Westerzgebirge und Vogtland / Th. Kaemmel. - Zur Abschätzung von Altersunterschieden innerhalb des Erzgebirgsplutons auf grund von Isotopenaltern / Th. Kaemmel. - Theoretische Aspekte zur radiogeochronologischen Datierung von Gesteinen und Mineralen / G. Christoph. - Die Verteilung der Strontium-90 und Cäsium-137 im Wasserkörper der Ostsee 1975-1982 / D. Weiß, E. Ettenhub
    Standort: AWI Archiv
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  • 70
    Monographie ausleihbar
    Monographie ausleihbar
    Palisades : Lamont-Doherty Geological Observatory, Columbia University
    Signatur: AWI G2-19-92382
    Materialart: Monographie ausleihbar
    Seiten: 690 Seiten , Illustrationen, Karten
    Sprache: Englisch
    Anmerkung: Table of Contents CHAPTER 1 INTERNAL CYCLING AND THROUGHPUT : Pathways from River Mouth to Sea Floor Depth Profiles of Sea Salt Composition Constituent Classification The Chemical Composition of Marine Organic Matter Composition of Particulate Matter Caught in Sediment Traps A Simple Model for Biologically Utilized CDnstituents The Distributions of Biointermediate Constituents Estimation of Input Rates Horizontal Segregation of CDnstituents in the Deep Sea Summary CHAPTER 2 THE SEDIMENTARY SINK Factors Influencing the Distribution of Sedimentary Constituents Introduction Sediment Types Distribution of Opal Production Opal Solution on the Sea Floor Distribution of Calcite in Marine Sediments Degree of Calcite Saturation Variation in the Carbonate Ion Content of Sea Water Spacial Variations in the CaC0 3 Saturation of Sea Water Factors Controlling the Rate of Calcite Solution Thickness and Shape of the Sublysocline Transition Zone Variation of Sediment Type with Time Manganese Nodules Summary CHAPTER 3 THE ATMOSPHERIC IMPRINT : The Cycles of Gases within the Sea Introduction Solubilities of Gases in Sea Water The Rate of Gas Exchange Stagnant Film Thickness Derived from Natural Radiocarbon Stagnant Film Thicknesses Determined by the Radon Method Oxygen Concentrations in Surface Ocean Water Oxygen Deficiencies in the Deep Sea The Marine N2O Cycle Excess Helium The Carbon Dioxide Content of Surface Ocean Water Origin of the Equatorial Pacific CO2 Anomaly Summary CHAPTER 4 REACTIVE METALS AND THE GREAT PARTICULATE SWEEP : The Cycle of Metals in the Sea Introduction Products of Uranium and Thorium Decay Thorium Isotopes in the Sea Protactinium-231 to Thorium-230 Activity Ratios The Distribution of Lead-210 The Distribution of Polonium-210 The Distribution of Radium-226 Anthropogenic Plutonium in the Sea Toward a Model of Metal Transport Distributions of Stable Metals in the Sea Stable Isotope Ratios in Reactive Metals Transport of Iron and Manganese in the Sea Lessons from Controlled Ecosystem Studies Distribution Coefficients Summary CHAPTER 5 HOW FAST DOES THE MILL GRIND? : Rates of Vertical Mixing and Sediment Accumulation Introduction Rate of Vertical Mixing Implication to the Distribution of Radium-226 Distribution of Radiocarbon in the Ocean Rate of Continental Runoff Sediment Accumulation Rates Radiocarbon Dating Uranium Series Dating Beryllium Dating Potassium-Argon Dating Agreement Among Dating Methods Comparison of Model and Observed Rates of CaC0 3 Solution Summary CHAPTER 6 WHAT KEEPS THE SYSTEM IN WHACK? : Control Mechanisms Operating in the Sea Introduction Phosphate Controls Silicate Controls Carbon Controls Interactions between the Phosphate and Carbon Controls Nitrate Controls Dissolved Oxygen Controls Major Anion Controls Major Cation Controls Possible Causes for Perturbations Recorders of Paleoocean Chemistry The Marine Geochemistry of Carbon-13 The Uranium Content of Coral Factors Influencing Nutrient Gradients in the Deep Sea Summary CBAPTER 7 FREIGHT TRAINS AND FICKIAN CONFUSION : The Movement of Water Through the Deep Sea Introduction Types of Motion One Dimensional Advection - Diffusion Model Tracers for Diapycnal and Isopycnal Mixing Mixing Rates Based on Radon-222 and Radium-228 The Distribution of Helium-3 in the Deep Pacific Sources of Deep Water Northern Component Water Conservative Properties of NCW Initial Radiocarbon to Carbon Ratio in NCW Feed for NCW Production Southern Component Water Ventilation of the Deep Atlantic Ocean Ventilation of the Deep Pacific and Indian Oceans The Grand Cycle of Radiocarbon in the Deep Ocean Biological Short-Circuiting Temporal Variations in Radiocarbon Production Argon-39 Summary CHAPTER 8 THE ANTHROPOGENIC INVASION : The Movement of Water Through the Oceanic Thermocline Introduction Input Functions Hydrology of the Main Thermocline Tritium Distribution within the Thermocline Temporal Trends in Tritium Tritium as a Guide to Deep Water Formation Supplementary Information from Strontium-90 Bomb Carbon-14 Distribution within the Thermocline Explanations for Low Equatorial Bomb Carbon-14 Inventories Implications of Equatorial Upwelling to the Tritium Budget An Upwelling Rate Based on the Equatorial CO2 Anomaly Helium-3 Distribution in the Main Oceanic Thermocline Purposeful Tracers Summary CHAPTER 9 ICE SHEETS AND OCEAN PHOSPHATE : Glacial to Interglacial Changes in Ocean Chemistry Introduction Temperature and Salinity Changes Formation and Destruction of Organic Materials Changes in CaCO3 Storage Evidence for an Early Post-Glacial Lysocline Change Changes in Phosphate Concentration The Combined Evidence from Deep Sea Cores Cause of the Oceanic Phosphate Change An Alternate Scenario Wrap Up of the CO2 Record The Oxygen Record Glacial to Interglacial Changes in Ocean Mixing Rate Glacial to Interglacial Lysocline Changes Changes in the Distribution of Nutrients in the Deep Sea Summary CHAPTER 10 CAN MAN OVERRIDE THE CONTROLS? : The Buildup of Fossil Fuel CO2 in the Atmosphere and Oceans Introduction CO2 Production in the Past CO2 Production in the Future Capacity of the Sea for Fossil Fuel CO2 Uptake Utilizable Capacity - Simplified Calculation Utilizable Capacity - Rigorous Calculation Kinetics of Fossil Fuel CO2 Uptake by the Sea Numerical Model crosschecks on the Validity of the Numerical Model Prediction of Future CO2 Levels Solution of Sea Floor Calcite Summary REFERENCES, CONSTANTS, DEFINITIONS, ABBREVIATIONS AND INDEX Introduction to the References Subject Outline for the References Annotated Reference List Frequently Used Constants Definitions of Isotope Notations Abbreviations Index Foldout Caption
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  • 71
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-82/27
    In: CRREL Report, 82-27
    Beschreibung / Inhaltsverzeichnis: Recommendations for economical thicknesses for building insulation result from a study of fuel and construction costs of 12 military installations in Alaska. A comparison between the insulation thickness that a building owner might choose today and what he might choose in 20 years indicates a trend for much thicker insulation in the future. An analysis of how much more expensive a building built today with the thickness that would be appropriate 20 years hence indicates only a small penalty in life-cycle costs for the additional insulation. Therefore, a minimum of R-32 walls and R-62 attics is recommended for most of Alaska.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 54 Seiten , Illustrationen
    Serie: CRREL Report 82-27
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Conversion factors Summary Introduction Determining economic thicknesses for insulation Background Analysis method for new construction Analysis method for reinsulating existing construction Sensitivity and longevity of the results Sensitivity Longevity Recommendations Saving money vs. saving energy Energy economics conservation Building energy performance standards Conclusion Literature cited Appendix A: Heating system costs Appendix B: Present worth factors Appendix C: Base case and incremental thermal properties Appendix D: LCC comparison graphs for wall and roof systems Appendix E: Cost penalties for energy conservatism Appendix F: Graphic aid for figuring energy savings thermal improvements
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  • 72
    Signatur: ZSP-201-82/26
    In: CRREL Report, 82-26
    Beschreibung / Inhaltsverzeichnis: The Caribou-Poker Creeks Research Watershed is a small (101.5-sq km) drainage basin located 48 km northwest of Fairbanks, Alaska. Elevations within the watershed range from 210 to 826 m, and approximately 28% of its area is underlain by permafrost. Climatic differences between the watershed and Fairbanks are primarily due to the higher elevation of the watershed. Generally the watershed climatic sites are warmer in winter and cooler in summer than Fairbanks. Within the watershed the greatest temperature contrasts exist in winter, when the valley-bottom sites are beneath the regional air temperature inversion, and the higher sites are above it. From May through September the total precipitation averages 270 mm, 1.47 times that received at Fairbanks. The annual precipitation is about 1.7 times that of Fairbanks. The historical precipitation record at Fairbanks indicates that summer precipitation was below the long-term normal in eight of the eleven years of watershed measurements (1969-1980); no climatic extremes occurred during this period. An analysis of annual streamflow data showed an inconsistency of baseflow recessions from year to year. The runoff-rainfall ratio for individual summer storms averaged 0.35 for Caribou Creek. Comparisons of spot discharge measurements of predominantly permafrost and non-permafrost subwatersheds showed that permafrost-dominated watersheds have a much flashier response to precipitation than non-permafrost watersheds. A comparison of the annual flow distribution of the watershed indicated that Caribou Creek has lower summer and higher winter discharges per unit area than the Chena or Salcha Rivers.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 42 Seiten , Illustrationen
    Serie: CRREL Report 82-26
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Setting Geology and soils Vegetation Climate Air temperature Precipitation Hydrology Annual and monthly runoff Individual storms Baseflow recessions Spatial flow variability Temporal flow variability Summary and conclusions Literature cited Appendix A: Station histories
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  • 73
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/31
    In: CRREL Report, 82-31
    Beschreibung / Inhaltsverzeichnis: Information on sea ice conditions in the Bering Strait and the icefoot formation around Fairway Rock, located in the strait, is presented. Cross-sectional profiles of Fairway Rock and the relief of the icefoot are given along with theoretical analyses of the possible forces active during icefoot formation. It is shown that the ice cover most likely fails in flexure as opposed to crushing or buckling, as the former requires less force. Field observations reveal that the Fairway Rock icefoot is massive, with ridges up to 15 m high, a seaward face only 20 degrees from vertical, and interior ridge slopes averaging 33 degrees. The icefoot is believed to be grounded and its width ranges from less than 10 to over 100 m.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 44 Seiten , Illustrationen
    Serie: CRREL Report 82-31
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Bering Strait Field reconnaissance Estimation of ice forces on Fairway Rock 1. Creep deformation 2. Crushing failure 3. Flexural failure 4. Forces required to form floating or grounded pressure ridges along therock or to pile ice on the beaches 5. Buckling failure Driving forces Angle of internal friction of sea ice Summary Literature cited Appendix A: April 1982 field observations at Fairway Rock
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  • 74
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-82/30
    In: CRREL Report, 82-30
    Beschreibung / Inhaltsverzeichnis: Equations are developed that can be used to determine the amount of gas present in sea ice from measurements of the bulk ice density, salinity and temperature in the temperature range o f-2 to -30°C. Conversely these relationships can be used to give the density of sea ice as a function of its temperature and salinity, considering both the presence of gas and of solid salts in the ice. Equations are also given that allow the calculation of the gas and brine volumes in the ice at temperatures other than that at which the bulk density was determined.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 13 Seiten , Illustrationen
    Serie: CRREL Report 82-30
    Sprache: Englisch
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  • 75
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/29
    In: CRREL Report, 82-29
    Beschreibung / Inhaltsverzeichnis: Ice grains in a snow cover with a low temperature gradient assume a well-rounded equilibrium form. However, at temperature gradients of 0.1 to 0.2 C/cm (depending somewhat on temperature and snow density), the rounded grains recrystallize into a faceted kinetic growth form. The large temperature gradient must play a decisive role in moving the vapor fast enough to sustain the rapid growth rate associated with the kinetic growth form. Once the large temperature gradient is removed, the grains recrystallize back to the equilibrium form. the recrystallization occurs in either direction without a change in bulk density. The growth of faceted crystals begins at the warmer base of the snow cover where the excess vapor pressure is largest. A transition between the overlying rounded grains moves upward in time. Faceted crystals also grow just below crusts of reduced permeability, where the increased vapor accumulation can sustain the excess vapor pressure neded for kinetic growth. The heat and vapor flows are described using a model based on thermodynamic equilibrium. The temperature distribution is shown to be quasi-linear at steady state in homogeneous snow. The recrystallization of the snow is modeled using the rounded grains as sources and the faceted grains as sinks. In the future this model should be extended to account for different temperatures among the sources and sinks.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 27 Seiten , Illustrationen
    Serie: CRREL Report 82-29
    Sprache: Englisch
    Anmerkung: Contents: Abstract Preface Introduction Vapor flow Temperature profile Crystal growth rates Equilibirum versus kinetic growth forms of snow crystals Discussion Summary Literature cited
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  • 76
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/32
    In: CRREL Report, 82-32
    Beschreibung / Inhaltsverzeichnis: Low-frequency (10 Hz) volcanic earthquakes originate at a wide range of depths and occur before, during, and after magmatic eruptions. The characteristics of these earthquakes suggest that they are not typical tectonic events. Physically analogous processes occur in hydraulic fracturing of rock formations, low-frequency icequakes in temperate glaciers, and autoresonance in hydroelectric power stations. We propose that unsteady fluid flow in volcanic conduits is the common source mechanism of low-frequency volcanic earthquakes (tremor). The fluid dynamic source mechanism explains low-frequency earthquakes of arbitrary duration, magnitude, and depth of origin, as unsteady flow is independent of physical properties of the fluid and conduit. Fluid transients occur in both low-viscosity gases and high-viscosity liquids. A fluid transient analysis can be formulated as generally as is warranted by knowledge of the composition and physical properties of the fluid, material properties, geometry and roughness of the conduit, and boundary conditions. To demonstrate the analytical potential of the fluid dynamic theory, we consider a single-phase fluid, a melt of Mount Hood andeside at 1250 deg C, in which significant pressure and velocity variations occur only in the longitudinal direction.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 15 Seiten , Illustrationen
    Serie: CRREL Report 82-32
    Sprache: Englisch
    Standort: AWI Archiv
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  • 77
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/43
    In: CRREL Report, 82-43
    Beschreibung / Inhaltsverzeichnis: The radar signatures of ice wedges and wedge-like structures have been investigated for a variety of soil conditions. The radar used for this study emitted short sinusoidal pulses of about 10-ns duration with an approximate center frequency of 150 MHz. Most of the ice wedges existed at depths of about 1 m in a variety of silty and sandy soils with both frozen and thawed active layers. The position of the wedges was usually identified from corresponding surface features. An artificial ice wedge in coarse-grained alluvium was also profiled as well as wedge-like structures of fine silt in a coarse-grained glacial outwash. All wedges and wedge-like structures produced a hyperbolic reflection profile except when an active layer of thawed, saturated silt was present which eliminated returns from the wedges. The peaks of the hyper-bolas were sometimes masked by reflections from the permafrost table or other material interfaces, and multiple hyperbolas occurred at some sites. The dielectric constant of the host medium was often calculated from the linear portions of the hyperbolas and the results were verified by laboratory time domain reflectometry measurements per-formed on field samples. In some cases, hyperbolic profiles originated at several meters depth suggesting that deep ice wedges could be detected in areas of cold permafrost.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 19 Seiten , Illustrationen
    Serie: CRREL Report 82-43
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Background Objectives and procedures Equipment used Radar TDR Definitions Massive ice Results Artificial wedge: Norwich, Vermont Ice wedges in sand: Fish Creek, Alaska Ice wedges: Prudhoe Bay, Alaska Ice wedges under thawed fine-grained soils: North Slope, Alaska Wedge-like soil structures: Ft. Greely, Alaska TDR measurements Summary and concluding remarks Literature cited Appendix A: Brief discussion of dispersion
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  • 78
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/9
    In: CRREL Report, 83-9
    Beschreibung / Inhaltsverzeichnis: Recent observations of shore ice pile-up and ride-up along the coast of the Alaska Beaufort Sea are presented. Information is given to show that sea ice movement on shore has overridden steep coastal bluffs and has thrust inland over 150 m, gouging into and pushing up mounds of beach sand, gravel, boulders and peat and, inland, the tundra material. The resulting ice scar morphology was found to remain for tens of years. Onshore ice movements up to 20 m are relatively common, but those over 100 m are very infrequent. Spring is a dangerous time, when sea ice melts away from the shore, allowing ice to move freely. Under this condition, driving stresses of less than 100 kPa can push thick sea ice onto the land.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 59 Seiten , Illustrationen
    Serie: CRREL Report 83-9
    Sprache: Englisch
    Anmerkung: Contents Abstract Preface Introduction Winter 1979-80 observations Winter 1980-81 and summer 1981 observations Winter 1981-82 and summer 1982 observations Old ice ride-up features Discussion Literature cited Appendix A. The boulder rampart and rock littered shore west of Konganevik Pt. Appendix B. Site location maps
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  • 79
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/8
    In: CRREL Report, 83-8
    Beschreibung / Inhaltsverzeichnis: In the course of model tests with urea-doped ice in the CRREL Ice Engineering Facility test basin, the growth process and the physical and mechanical properties of the model ice were investigated. The parameters which were varied were: urea concentration in the tank water, air temperature during growth, growth duration, and tempering time. Uniformity of ice thickness and ice mechanical properties over the whole tank area were found to be satisfactory. The structure of the urea-doped ice was found to be similar to that of the ice except for a relatively thick incubation layer over a dendritic bottom layer. Empirical relationships were established between: ice thickness and negative degree-hours; mechanical properties and growth temperature, urea concentration, and ice thickness; and reduction in mechanical properties and tempting time. The results of the study are presented in charts which permit reliable scheduling of model tests with required ice thickness and ice flexural strength.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vii, 53 Seiten , Illustrationen
    Serie: CRREL Report 83-8
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Experimental facility and procedures Ice test basin Ice growth procedure Measurements Ice growth and structure Ice thickness distribution Ice growth during freeze-up Ice growth during warm-up Structure of urea-doped ice Mechanical properties of urea-doped ice Introductory remarks Model of a two-layer elastic material Properties of urea-doped ice during freeze-up Properties of urea-doped ice during warm-up Applications to test program scheduling Summary and conclusions Literature cited Appendix A: Results of ice thickness measurements for various growth conditions Appendix B: Properties of untempered ice Appendix C: Properties of tempered ice
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  • 80
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/7
    In: CRREL Report, 83-7
    Beschreibung / Inhaltsverzeichnis: Peak power generation with hydropower creates tailwater flow conditions characterized by high and low flows with abrupt transitions between these states. Flows occurring in tailwaters typically form sharp-fronted, large-amplitude waves of relatively short period. An understanding of the mechanics of downstream propagation of these waves is important both for direct application in studies of the tailwater and because of the similarity of these waves to those following a dam break. An analysis of the dynamic equations of open channel flow is used to quantify the relative importance of flow wave convection, diffusion and dispersion in rivers. The relative importance of each process is re­lated to the relative magnitude of terms in the dynamic equations, providing a physical basis for model formulation. A one-dimensional diffusion wave flow routing model, modified for tailwaters, simulates the important physical pro­cesses affecting the flow and is straightforward to apply. The model is based upon a numerical solution of the kine­matic wave equation. The “modified equation,” Hirt, and von Neumann analyses are used to gain insight into the stability and dissipative and dispersive behavior of the numerical solution, and results of these analyses are compared. A set of linear routings is used to demonstrate the dissipative and dispersive behavior predicted by the analyses and to verify the accuracy of an expression that quantifies the numerical diffusion of the model. The analyses provide a basis for selection of numerical parameters for model applications. The capability and accuracy of the model are enhanced when physical wave diffusion is balanced by numerical diffusion in the model. Maintaining the diffusion balance re­quires that the time derivative weighting parameter 0 be variable and in some instances negative. Though some amount of phase error is introduced, negative 0 values have no adverse effect upon model stability. Field studies were con­ducted to demonstrate the benefits of careful model development and analysis, and to verify the diffusion wave model for rapidly varying tailwater flow. The bed slope and roughness characteristics of the field study reaches (below Apalachia and Norris Dams) differ greatly, spanning those of a large number of rivers of practical interest. The accurate simulation of flow in both of these tailwaters attests to the soundness of both the physical basis of the model and the numerical solution technique. The field studies confirm, for the extreme case of rapidly varying flow in a mildly sloped river, that inertia has a negligible effect upon unsteady flow waves at low Froude numbers. Additionally, these studies verify that diffusion of short-period waves in rivers is generally significant.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 41 Seiten , Illustrationen
    Serie: CRREL Report 83-7
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Physical diffusion and dispersion in open channel flow Modeling approach Description of the diffusion wave flow routing model Analysis of the numerical model Modified equation and Hirt analyses of diffusion wave model von Neumann analysis of the diffusion wave model Linear case studies Accuracy considerations of the numerical solution Field studies Apalachia Dam tailwater Norris Dam tailwater Conclusions Literature cited
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  • 81
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/6
    In: CRREL Report, 83-6
    Beschreibung / Inhaltsverzeichnis: During the austral summers of 1976-77 and 1978-79, several ice cores were taken from the McMurdo Ice Shelf brine zone to investigate its thermal, physical and chemical properties. This brine zone consists of a series of super-imposed brine layers (waves) that originate at the seaward edge of the ice shelf and migrate at various rates, depending upon their age and position in the ice shelf. The brine in these layers becomes increasingly concentrated as the waves migrate inland through the permeable ice shelf firn. Chemical analyses of brine samples from the youngest (uppermost) brine wave show that it contains sea salts in normal seawater proportions. Further inland, deeper and older brine layers, though highly saline (S 〉 200 ‰), are severely depleted in SO2-4 with the SO2-4/Na+ ratio being an order of magnitude less than that of normal seawater. Analyses of Na+, K+, Ca2+, Mg2+, SO2-4 and CI-, together with solubility and temperature considerations, show that the sulfate depletion is due to selective precipitation of mirabilite, Na2SO4*10H2O. The location of the inland boundary of brine penetration is closely related to the depth at which the brine en-counters the firn/ice transition. However, a small but measurable migration of brine is still occurring in otherwise impermeable ice; this is attributed to eutectic dissolution of the ice by concentrated brine as it moves into deeper and warmer parts of the McMurdo Ice Shelf.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 16 Seiten , Illustrationen
    Serie: CRREL Report 83-6
    Sprache: Englisch
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  • 82
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/5
    In: CRREL Report, 83-5
    Beschreibung / Inhaltsverzeichnis: This report presents the results of dynamic ice-structure interaction model tests conducted at the CRREL Ice Engineering Facility. A flexible, single-pile, bottom-founded offshore structure was simulated by a test pile with about a one-to-ten scale ratio. Urea (instead of sodium chloride) was used as dopant to scale down the ice properties, resulting in good model ice properties. Six ice fields were frozen and 18 tests carried out. In all cases distinctive dynamic ice structure interaction vibrations appeared, from which abundant data were collected. In tests with linear ice velocity sweep, sawtooth-shaped ice force fluctuations occurred first. With increasing velocity the natural modes of the test pile were excited, and shifts from one mode to another occurred. The maximum ice force values appeared mostly with low loading rates, but high forces appeared random'y at high ice velocities. As a general trend, ice force maximums, averages and standard deviations decreased with increasing ice velocities. The aspect ratio effect of the ice force in continuous crushing follows the same dependence as in static loadings. The frequency of observed ice forces is strongly dominated by the natural modes of the structure. Dynamically unstable natural modes tend to make the developing ice force frequencies the same as the natural frequencies. Otherwise the resulting frequency depends directly on structural stiffness and ice velocity and inversely on the ice force range. During vibrations the displacement rates of the structure overcome the velocity of ice, making low loading rates and hence high ice forces possible. During crushing, ice induces both positive and negative damping.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 53 Seiten , Illustrationen
    Serie: CRREL Report 83-5
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Test arrangements Ice properties Crushing patterns Maximum ice force vs velocity Dynamic aspect ratio effect and crushing strength Measured ice force frequencies Calculated ice force frequencies Accelerations, velocities and displacements Damping Ice-induced negative damping Limit cycles Buckling load Conclusions Literature cited
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  • 83
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/4
    In: CRREL Report, 83-4
    Beschreibung / Inhaltsverzeichnis: Measurements and analysis of seasonal ice growth and decay on Post Pond, New Hampshire, for the period 1973-1982 are presented. Observations included ice thickness measurements, examination of the various ice types contributing to the ice cover, and measurements of meteorological parameters for correlation with and modeling of the ice growth process. The overall nature of ice growth and decay (ice loss) on the Post Pond has been ascertained, the seasonal variability in the timing of freeze-up and ice-out and the duration of the ice cover have been determined, and the relationship of ice growth to freezing-degree-day (deg C) records evaluated on the basis of a Stefan conduction equation modified to deal with ice sheets covered with or free of snow. Ice growth occurs predominantly by the direct freezing of lake water, but snow ice may compose as much as 50% of the ice cover in winters with higher than average snowfall. Freeze-up leading to the establishment of a stable ice cover occurs during the 4-week period from the end of November to the end of December. Maximum seasonal ice thicknesses were from 45 to 67 cm and are generally attained during the first two weeks of March; ice-out, marking the final disappearance of ice from Post Pond, usually occurs by the third week of April. The overall rate of the ice loss is three to four times that of ice growth, and is dominated initially by melting from the top. As much as 50% of the ice may be lost in this way before the onset of any bottom melting. Final dissipation of the ice cover is usually expedited by candling resulting from preferential melting and disintegration of the ice at crystal boundaries.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 30 Seiten , Illustrationen
    Serie: CRREL Report 83-4
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Location of study Study methods Ice thickness Ice-cover composition Surface air temperatures Freeze-up and ice-out characteristics Results and discussion Ice-growth record Freezing-degree-day records Ice-growth predictions Summary and conclusions Literature cited Appendix A: Ice-growth records Appendix B: Measured and computed ice-growth curves
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  • 84
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/2
    In: CRREL Report, 83-2
    Beschreibung / Inhaltsverzeichnis: A numerical model of rime ice accretion on an arbitrary two-dimensional airfoil is presented. The physics of the model are described and results are presented that demonstrate, by comparison with other theoretical data and experimental data, that the model predictions are believable. Results are also presented that illustrate the capability of the model to handle time-dependent rime ice accretion, taking into account the feedback between the ice accretion and the airflow and droplet trajectory fields.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 81 Seiten , Illustrationen
    Serie: CRREL Report 83-2
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Methodology Potential flow around an arbitrary airfoil Incompressible velocity field Droplet trajectory equation Computational procedure for trajectories Determining the point of impact Calculation of collision efficiencies Accreting an ice layer Determining the accuracy of the flow field Determining the accuracy of the trajectories Results and discussion Comparing results with and without the history term Collision efficiency of NACA 0015 airfoil at 8° attack angle Time-dependent accretion on NACA 0015 airfoil at 8° attack angle Time-dependent accretion on NACA 0015 airfoil at 0° attack angle Conclusions and recommendations Literature cited Appendix A : Sample input Appendix B: Sample output Appendix C : Program listing
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  • 85
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-83/1
    In: CRREL Report, 83-1
    Beschreibung / Inhaltsverzeichnis: Roof snow load case studies gathered throughout the United States over a three-year period are analyzed. The objective of the analysis is to determine a relationship between the snow load on the ground and the corresponding uniform snow load on flat and sloped roofs. The main parameters considered are the thermal characteristics of the roof, the roof slope and the exposure of the structure. Exposure has the strongest effect on the ratio of ground to roof snow loads. Comparisons are made with existing and proposed building codes and standards.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 47 Seiten , Illustrationen
    Serie: CRREL Report 83-1
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Metric conversion table Introduction Data base Conversion factor Ground load effects Exposure effects Thermal effects Slope effects Expected value relationship Comparison with existing codes and standards Comparison with relationships proposed in new ANSI standard Summary and conclusions Literature cited Appendix A. Roof snow load case history reports Appendix B. Roofs in the snow load case study data base Appendix C. Ground and roof snow load data Appendix D. Conversion factors from the 1982 ANSI standard
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  • 86
    Signatur: ZSP-201-83/24
    In: CRREL Report, 83-24
    Beschreibung / Inhaltsverzeichnis: Secondary recovery of oil at Prudhoe Bay, Alaska, will involve transporting large quantities of seawater in elevated pipelines across tundra for injection into oil-bearing rock strata. The possibility of a pipeline rupture raises questions concerning the effects of seawater on tundra vegetation and soils. To evaluate the relative sensitivities of different plant communities to seawater, eight sites representing the range of vegetation types along the pipeline route were treated with single, saturating applications of seawater during the summer of 1980. Within a month of the treatment 30 of 37 taxa of shrubs and forbs in the experimental plots developed clear symptoms of stress, while none of the 14 graminoid taxa showed apparent adverse affects. Live vascular plant cover was thus reduced by 89 and 91% in the two dry sites and by 54, 74 and 83% in the three moist sites, respectively. Live(green) bryophyte cover was markedly reduced in the moist experimental sites in 1981. Bryophytes in all but one of the wet-site experimental plots were apparently unaffected by the seawater treatment. Two species of foliose lichens treated with seawater showed marked deterioration in 1981. All other lichen taxa were apparently unaffected by the seawater treatment. The absorption and retention of salts by the soil is inversely related to the soil moisture regime. In the wet sites, conductivities approached prespill levels within about 30 days. In such sites, spills at the experimental volumes are quickly diluted and the salts flushed from the soil. In the dry sites, on the other hand, salts are retained in the soil, apparently concentrating at or near the seasonal thaw line.
    Materialart: Schriftenreihen ausleihbar
    Seiten: 43 Seiten , Illustrationen
    Serie: CRREL Report 83-24
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Methods Site selection and preparation Prespill assessment Seawater application Postspill assessment Enzyme assay and analysis of soil flora Results and discussion Soil-solution conductivities Vascular plant response Cryptogam response Site factors and plant response Soil flora and extracellular soil enzymes Limitations of this study Summary and conclusions Literature cited Appendix: Plant taxa included in this study
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  • 87
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-82/42
    In: CRREL Report, 82-42
    Beschreibung / Inhaltsverzeichnis: A high-resolution impulse radar profiling system was evaluated for 1) detecting the existence of sea ice which coring has revealed to exist on the bottom of the Ross Ice Shelf at Site J-9, 2) detecting the preferred horizontal c-axis azi-muthal direction of the sea ice crystals, using the voltage amplitude of the radar reflection from the sea ice bottom, and 3) determining the direction of the currents under an Antarctic ice shelf. A field program was conducted consisting of a surface radar survey on the Ross Ice Shelf at Site J-9 and surface and airborne radar profiling on the McMurdo Ice Shelf. The CRREL impulse radar system, operating at a center frequency of either 80 MHz or 20 MHz, was unable to detect the shelf bottom at Site J-9, which drilling revealed to be 416 m below the snow surface. The radar system was used to profile the McMurdo Ice Shelf both from the snow surface and from the air; a shelf thickness of about 275 m was easily detected. Theoretical considerations indicate that the bulk conductivity of the ice shelf at Site J1-9 was higher than originally anticipated, and this limited the radar sounding depth to about 405 m when operating at a frequency of 20 MHz.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 19 Seiten , Illustrationen
    Serie: CRREL Report 82-42
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Introduction Profiling system Theoretical considerations Field program Discussion Literature cited
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  • 88
    Signatur: AWI G6-19-92758
    In: 2nd Working Meeting "Radioisotope Application and Radiation Processing in Industry", Abstracts of papers
    Materialart: Monographie ausleihbar
    Seiten: 167 Seiten
    Sprache: Englisch
    Standort: AWI Lesesaal
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  • 89
    Monographie ausleihbar
    Monographie ausleihbar
    Washington, D.C. : Mineralogical Society of America
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    Signatur: 11/M 19.92815
    In: Reviews in mineralogy, 1
    Materialart: Monographie ausleihbar
    Seiten: vi, diverse Seitenangaben , Illustrationen, Diagramme
    Ausgabe: fourth printing
    ISBN: 0-939950-01-4
    Serie: Reviews in mineralogy 1
    Sprache: Englisch
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
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  • 90
    Signatur: MOP 46647 / Mitte
    Materialart: Monographie ausleihbar
    Seiten: VIII, 162 Seiten
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
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  • 91
    Signatur: MOP 45321 / Mitte
    In: Antarctic research activities of the German Democratic Republic
    Materialart: Monographie ausleihbar
    Seiten: 15 Seiten
    Serie: Antarctic research activities of the German Democratic Republic : report to SCAR No 2
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
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  • 92
    Signatur: MOP 45321 / Mitte
    In: Antarctic research activities of the German Democratic Republic
    Materialart: Monographie ausleihbar
    Serie: Antarctic research activities of the German Democratic Republic : report to SCAR No 4
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
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  • 93
    Signatur: MOP 45206 / Mitte
    In: Daily Global Analyses
    Materialart: Monographie ausleihbar
    Seiten: 6, 381 Seiten , graphische Darstellungen
    Serie: Daily Global Analyses Part 2
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
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  • 94
    Signatur: MOP 45206 / Mitte
    In: Daily Global Analyses
    Materialart: Monographie ausleihbar
    Seiten: 6, 371 Seiten , graphische Darstellungen
    Serie: Daily Global Analyses Part 4
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
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  • 95
    Signatur: MOP 46633 / Mitte
    Materialart: Monographie ausleihbar
    Seiten: VII, 221 Seiten
    Sprache: Englisch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 96
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    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-80/25
    In: CRREL Report, 80-25
    Beschreibung / Inhaltsverzeichnis: Two new types of load cells for attachment to bridge piers and direct measurement of ice forces were developed and tested with one type being installed on a pier of the Yukon River Bridge northwest of Fairbanks, Alaska. Both types of load cells used beams supported by base plates and carried nose plates that were loaded by the ice. The loads were imposed at the beams at locations differing from the support reactions so that the loads developed moments in the beams. By instrumenting them with strain gauges, the loads could be measured. Details of the design of the load cells, the means of calculating the loads and experience obtained with load cells are discussed.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 17 Seiten , Illustrationen
    Serie: CRREL Report 80-25
    Sprache: Englisch
    Anmerkung: CONTENTS Preface Conversion factors Introduction Estimates and field measurements of ice forces on structures General Indirect estimates Direct measurements Small-scale and laboratory studies Instrumentation plan for measuring ice loads on the Yukon River Bridge Load cell development The single reaction beam system Performance of a single reaction beam load cell The double reation beam load cell Reaction beam design Stress in the beam Deflection Axial tensile stress in the reaction beam Measurement techniques Conclusions Literature cited Appendix A. Finding load magnitude and location with a single reaction beam device Appendix B. Finding load magnitude and location on a double reaction beam device
    Standort: AWI Archiv
    Zweigbibliothek: AWI Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 97
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-80/24
    In: CRREL Report, 80-24
    Beschreibung / Inhaltsverzeichnis: The fluid shear stress applied to the underside of a simulated floating ice cover was measured in a laboratory flume. The measured values were compared with values of the shear stress computed from the von Karman-Prandtl velocity distribution fitted to the velocity profiles measured beneath the cover. For the lower velocity runs (approx 0.079 m/s) the measured and computed values of the shear stress were in close agreement. At the high velocity flows (approx 0.137 m/s) the measured values were roughly one-half those calculated from the velocity distribution. As the underside of the cover became increasingly rougher, the position of maximum velocity moved closer to the bottom of the channel. It was shown that the Darcy friction coefficient is exponentially related to a normalized ice cover thickness, which suggests that it is measure of the roughness of a fragmented ice cover.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 11 Seiten , Illustrationen
    Serie: CRREL Report 80-24
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface List of symbols Introduction Experimental apparatus Experimental procedures Analysis of forces Experimental results Analysis of data Conclusions Literature cited
    Standort: AWI Archiv
    Zweigbibliothek: AWI Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 98
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-80/23
    In: CRREL Report, 80-23
    Beschreibung / Inhaltsverzeichnis: The contribution of brine layers to observed reflective anisotropy of sea ice at 100 MHz is quantitatively assessed. The sea ice is considered to be a stratified, inhomogeneous, anisotropic dielectric consisting of pure ice containing ordered arrays of conducting inclusions (brine layers). Below the transition zone, the ice is assumed to have constant azimuthal c-axis orientation within the horizontal plane, so that the orientation of brine layers is uniform. The brine layers are also assumed to become increasingly well-defined with depth, since adjacent brine inclusions tend to fuse together with increasing temperature. A theoretical explanation for observed reflective anisotropy is proposed in terms of an isotropic electric flux penetration into the brine layers. Penetration anisotropy and brine layer geometry are linked to anisotropy in the complex dielectric constant of sea ice. In order to illustrate the above effects we present a numerical method of approximating the reflected power of a plane wave pulse incident on a slab of sea ice. Mixture dielectric constants are calculated for two polarizations of the incident wave: 1) the electric field parallel to the c-axis direction, and 2) the electric field perpendicular to the c-axis direction. These dielectric constants are then used to calculate power reflection coefficients for the two polarizations. Significant bottom reflection (R ~ 0.08) occurs when the polariza-tion is parallel to the c-axis. However, when the polarization is perpendicular to the c-axis, the return may be almost completely extinguished (R 〈 0.001). This extinction is due primarily to absorptive loss associated with the conduct-ing inclusions and secondarily to an impedance match at the ice/water interface that results in transmission of the wave to the water without reflection.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 15 Seiten , Illustrationen
    Serie: CRREL Report 80-23
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface List of symbols Introduction Anisotropy and sea ice macrostructure Anisotropy and sea ice microstructure A theory of anisotropic radar return from sea ice Anisotropic electric flux penetration into brine layers Implications of normal exclusion, tangential penetration, and brine layer geometry for dielectric behavior of sea ice Modeling of electromagnetic reflection from a stratified, anisotropic, inhomogeneous lossy medium Calculation of mixture complex dielectric constants Calculation of interfacial power reflection coefficients Calculation of bulk power reflection coefficients Calculation of attenuated power reflection coefficients Beam spread Results Anisotropic bottom reflections Anisotropic complex dielectric constants Sensitivity of parameters Internal reflection: the bumps Discussion Conclusions Literature cited
    Standort: AWI Archiv
    Zweigbibliothek: AWI Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 99
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-80/18
    In: CRREL Report, 80-18
    Beschreibung / Inhaltsverzeichnis: The use of ice as a structural material is common practice for certain applications in cold regions. Techniques such as surface flooding or water spraying are used to accelerate ice growth rates, thereby lengthening the winter construction season. This report examines the heat and mass transfer rates from freely falling water drops in cold air. Design equations which predict the amount of supercooling of the drops as a function of outdoor ambient temperature, drop size and distance of fall are given
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 14 Seiten , Illustrationen
    Serie: CRREL Report 80-18
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Velocity problem Heat and mass transfer problem - A single drop Heat and mass transfer - A system of drops Literature cited Appendix A: FORTRAN IV program to calculate final drop temperature, air temperatureand humidity
    Standort: AWI Archiv
    Zweigbibliothek: AWI Bibliothek
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  • 100
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-80/19
    In: CRREL Report, 80-19
    Beschreibung / Inhaltsverzeichnis: During the period 1975-1978 the Federal Highway Administration sponsored a series of environmental engineering in­vestigations along the Yukon River to Prudhoe Bay Haul Road. In 1976 the Department of Energy joined these in­vestigations with a series of ecological projects which continue to the present. Both agencies research efforts were con­ducted on a cooperative basis with CRREL’s in-house research program. The objectives of the research focused on 1) an evaluation of the performance of the road, 2) an assessment of changes in the environment associated with the road, 3) documentation of flora and vegetation along the 577-km-long transect, 4) methodologies for revegetation and restoration, and 5) an assessment of biological parameters as indicators of environmental integrity. In support of these objectives, specific studies were undertaken that investigated the climate along the road, thaw and subsidence beneath and adjacent to the road, drainage and side slope performance, distribution and properties of road dust, vegetation distribution, vegetation disturbance and recovery, occurrence of weeds and weedy species, erosion and its control, revegetation and restoration, and construction of the fuel gas line. This report presents background, information on the region, detailed results of the road thaw subsidence and dust investigations, and summaries of revegetation, fuel gas line, vegetation distribution, soil, and weed studies.
    Materialart: Schriftenreihen ausleihbar
    Seiten: xv, 187 Seiten , Illustrationen
    Serie: CRREL Report 80-19
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Summary Introduction Chapter 1. The road and its environment Introduction General physiography Regional climate Surficial and bedrock geology Permafrost and ground ice General biota Vegetation Floristic survey Vegetation mapping Soils and mapping Chapter 2. Roadbed performance and associated investigations Roadbed investigations Roadbed performance Performance of drainage features Performance of sideslopes Conclusions from road, drainage and sideslope performance studies Fuel gas line construction Chapter 3. Distribution and properties of road dust along the northern portion of the Haul Road Introduction Methods Results of wind direction and velocity measurements Dust load and distribution Particle size analyses of dust Chemical composition properties of dust and related samples Soil cation composition Dust impacts on vegetation Discussion and conclusions Chapter 4. Revegetation and restoration investigations Introduction Revegetation approaches Alyeska erosion control and revegetation program Weeds and weedy plants Performance of revegetation Alyeska willow cutting program CRREL restoration experiments Conclusions Revegetation recommendations General report recommendations Literature cited Appendix A: General environmental guidelines applicable to subarctic and arctic road construction Appendix B: University-based studies along the Yukon River-Prudhoe Bay Haul Road Appendix C: CRREL maps of Haul Road showing locations of all study Sites Appendix D: Additional Haul Road cross-sectional profiles Appendix E: Clay mineralogy of road-related materials Appendix F: List of reports in the Joint State/Federal Fish and Wildlife Ad­visory Team series
    Standort: AWI Archiv
    Zweigbibliothek: AWI Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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