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  • 1995-1999  (95)
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  • 1
    Signatur: ZSP-168-211
    In: Berichte zur Polarforschung
    Materialart: Schriftenreihen ausleihbar
    Seiten: 208 S. : graph. Darst., Kt.
    ISSN: 0176-5027
    Serie: Berichte zur Polarforschung 211
    Sprache: Englisch
    Standort: AWI Lesesaal
    Zweigbibliothek: AWI Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Dazugehörige Bände
    Signatur: ZSP-168-174
    In: Berichte zur Polarforschung
    Materialart: Schriftenreihen ausleihbar
    Seiten: 186 S. : graph. Darst., Kt.
    ISSN: 0176-5027
    Serie: Berichte zur Polarforschung 174
    Sprache: Englisch
    Standort: AWI Lesesaal
    Zweigbibliothek: AWI Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Signatur: AWI G3-98-0227
    Materialart: Monographie ausleihbar
    Seiten: 54 S. : Ill.
    Zweigbibliothek: AWI Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Signatur: AWI G3-99-0175 ; AWI G3-11-0026
    Beschreibung / Inhaltsverzeichnis: The Arctic is considered to be one of the most sensitive environmental elements on Earth, which may respond rapidly to climate change. However, our knowledge of the present and past processes of the Arctic system is still relatively sparse. Based on a multidisciplinary approach, German and Russian scientists describe in this book the natural processes behind short- and long-term changes in the Laptev Sea and its hinterland (Arctic Siberia), using modern climate data and paleorecords which were collected over the past 6 years. These marine and terrestrial datasets provide important new insights into the causes, impacts, and feedback mechanisms of this extreme environment.
    Materialart: Monographie ausleihbar
    Seiten: XI, 711 S. , Ill., graph. Darst., Kt.
    ISBN: 3540656766
    Sprache: Englisch
    Anmerkung: Table of Contents: SECTION A: MODERN OCEAN AND SEA-ICE PROCESSES. - Features of Seasonal and Interannual Variability of the Sea Level and Water Circulation in the Laptev Sea / V. K. Pavlov and P. V. Pavlov. - Numerical Modelling of Storm Surges in the Laptev Sea Based on the Finite Element Method / I. Ashik and A. Novakov. - Large-Scale Variations of Sea Level in the Laptev Sea / G. N. Voinov and E. A. Zakharchuk. - Extreme Oscillations of the Sea Level in the Laptev Sea / I. Ashik, Y. Dvorkin and Y. Vanda. - Internal Waves in the Laptev Sea / E. A. Zakharchuk. - The Composition of the Coarse Fraction of Aerosols in the Marine Boundary Layer over the Laptev, Kara and Barents Seas / V. P. Shevchenko, A. P. Lisitzin, R. Stein, V. V. Serova, A. B. Isaeva and N. V. Politova. - New Data on Sea-Ice Albedo in the Laptev and Barents Seas / B. V. Ivanov. - Possible Causes of Radioactive Contamination in the Laptev Sea / V. K. Pavlov, V. V. Stanovoy and A. I. Nikitin. - Oceanographic Causes for Transarctic Ice Transport of River Discharge / I. Dmitrenko, P. Golovin, V. Gribanov and H. Kassens. - Step-Like Vertical Structure Formation Due to Turbulent Mixing of Initially Continuous Density Gradients / A. Zatsepin, S. Dikarev, S. Poyarkov, N. Sheremet, I. Dmitrenko, P. Golovin and H. Kassens. - Dissolved and Paniculate Major and Trace Elements in Newly Formed Ice from the Laptev Sea (Transdrift III, October 1995) / J. A. Hölemann, M. Schirmacher and A. Prange. - Particle Entrainment into Newly Forming Sea Ice - Freeze-Up Studies in October 1995 / F. Lindemann, J. A. Holemann, A. Korablev and A. Zachek. - Frazil Ice Formation during the Spring Flood and its Role in Transport of Sediments to the Ice Cover / P. Golovin, I. Dmitrenko, H. Kassens and J. A. Hölemann. - SECTION B: THE MARINE ECOSYSTEM. - Pelagic-Benthic Coupling in the Laptev Sea Affected by Ice Cover / C. Grahl, A. Boetius and E.-M. Nöthig. - Chlorophyll a Distribution in Water Column and Sea Ice during the Laptev Sea Freeze-Up Study in Autumn 1995 / K. v. Juterzenka and K. Knickmeier. - Composition, Abundance and Population Structure of Spring-Time Zooplankton in the Shelf-Zone of Laptev Sea / E. N. Abramova. - Macrobenthos Distribution in the Laptev Sea in Relation to Hydrology / V. V. Petryashov, B. I. Sirenko, A. A. Golikov, A. V. Novozhilov, E. Rachor, D. Piepenburg and M. K. Schmid. - Carepoctus solidus sp.n., a New Species of Liparid Fish (Scorpaeniformes, Liparidae) from the Lower Bathyal of the Polar Basin / N. V. Chernova. - Spring Stopover of Birds on the Laptev Sea Polynya / D. V. Solovieva. - SECTION C: LAND-OCEAN INTERACTIONS AND PATHWAYS. - Major, Trace and Rare Earth Element Geochemistry of Suspended Particulate Material of East Siberian Rivers Draining to the Arctic Ocean / V. Rachold. - Carbon Isotope Composition of Particulate Organic Material in East Siberian Rivers / V. Rachold and H.-W. Hubberten. - Distribution of River Water and Suspended Sediment Loads in the Deltas of Rivers in the Basins of The Laptev and East-Siberian Seas / V. V. Ivanov and A. A. Piskun. - Dissolved Oxygen, Silicon, Phosphorous and Suspended Matter Concentrations During the Spring Breakup of The Lena River / S. V. Pivovarov, J. A. Hölemann, H. Kassens, M. Antonow and I. Dmitrenko. - Distribution Patterns of Heavy Minerals in Siberian Rivers, the Laptev Sea and the eastern Arctic Ocean: An Approach to Identify Sources, Transport and Pathways of Terrigenous Matter / M. Behrends, E. Hoops and B. Peregovich. - The Role of Coastal Retreat for Sedimentation in the Laptev Sea / F. E. Are. - SECTION D: TERRESTRIAL ENVIRONMENT - PAST AND PRESENT. - Seasonal Changes in Hydrology, Energy Balance and Chemistry in the Active Layers of Arctic Tundra Soils in Taymyr Peninsula, Russia / J. Boike and P. P. Overduin. - The Landscape and Geobotanical Characteristics of the Levinson-Lessing Lake Basin, Byrranga Mountains, Central Taimyr / M. A. Anisimov and I. N. Pospelov. - Studies of Methane Production and Emission in Relation to the Microrelief of a Polygonal Tundra in Northern Siberia / V. A. Samarkin, A. Gundelwein and E.-M. Pfeiffer. - Carbon Dioxide and Methane Emmissions at Arctic Tundra Sites in North Siberia / M. Sommerkom, A. Gundelwein, E.-M. Pfeiffer and M. Bolter. - The Features of the Hydrological Regime of the Lake-River Systems of the Byrranga Mountains (by the Example of the Levinson-Lessing Lake) / V. P. Zimichev, D. Yu. Bolschyanov, V. G. Mesheryakov and D. Gintz. - Lead-210 Dating and Heavy Metal Concentration in Recent Sediments of Lama Lake (Norilsk Area, Siberia) / B. Hagedorn, S. Harwart, M. M. R. van der Loeff and M. Melles. - Late Weichselian to Holocene Diatom Succession in a Sediment Core from Lama Lake, Siberia and Presumed Ecological Implications / U. Kienel. - Climate and Vegetation History of the Taymyr Peninsula since Middle Weichselian Time - Palynological Evidence from Lake Sediments / J. Hahne and M. Melles. - Laminated Sediments from Levinson-Lessing Lake, Northern Central Siberia - A 30,000 Year Record of Environmental History? / T. Ebel, M. Melles and F. Niessen. - High-Resolution Seismic Stratigraphy of Lake Sediments on the Taymyr Peninsula, Central Siberia / F. Niessen, T. Ebel, C. Kopsch and G. B. Fedorov. - Archaeological Survey in Central Taymyr / V. V. Pitul'ko. - Marine Pleistocene Deposits of the Taymyr Peninsula and their Age from ESR Dating / D. Bolshiyanov and A. Molodkov. - Paleoclimatic Indicators from Permafrost Sequences in the Eastern Taymyr Lowland / C. Siegert, A. Yu. Derevyagin, G.N. Shilova, W.-D. Hermichen and A. Hiller. - SECTION E: MARINE DEPOSITIONAL ENVIRONMENT - PAST AND PRESENT. - Stable Oxygen Isotope Ratios in Benthic Carbonate Shells of Ostracoda, Foraminifera, and Bivalvia from Surface Sediments of the Laptev Sea, Summer 1993 and 1994 / H. Erlenkeuser and U. von Grafenstein. - Determination of Depositional Beryllium-10 Fluxes in the Area of the Laptev Sea and Beryllium-10 Concentrations in Water Samples of High Northern Latitudes / C. Strobl, V. Schulz, S. Vogler, S. Baumann, H. Kassens, P. W. Kubik, M. Suter and A. Mangini. - Spatial Distribution of Diatom Surface Sediment Assemblages on the Laptev Sea Shelf (Russian Arctic) / H. Cremer. - Diatoms from Surface Sediments of the Saint Anna Trough (Kara Sea) / R. N. Djinoridze, G. I. Ivanov, E. N. Djinoridze, and R. F. Spielhagen. - Distribution of Aquatic Palynomorphs in Surface Sediments from the Laptev Sea, Eastern Arctic Ocean / M. Kunz-Pirrung. - Distribution of Pollen and Spores in Surface Sediments of the Laptev Sea / O. D. Naidina and H. A. Bauch. - Clay Mineral Distribution in Surface Sediments of the Laptev Sea: Indicator for Sediment Provinces, Dynamics and Sources / B. T. Rossak, H. Kassens, H. Lange and J. Thiede. - Planktic Foraminifera in Holocene Sediments from the Laptev Sea and the Central Arctic Ocean: Species Distribution and Paleobiogeographical Implication / H. A. Bauch. - Holocene Diatom Stratigraphy and Paleoceanography of the Eurasian Arctic Seas / Y. Polyakova. - Late Quaternary Organic Carbon and Biomarker Records from the Laptev Sea Continental Margin (Arctic Ocean): Implications for Organic Carbon Flux and Composition / R. Stein, K. Fahl, F. Niessen and M. Siebold. - Late Pleistocene Paleoriver Channels on the Laptev Sea Shelf - Implications from Sub-Bottom Profiling / H. P. Kleiber and F. Niessen. - Main Structural Elements of Eastern Russian Arctic Continental Margin Derived from Satellite Gravity and Multichannel Seismic Reflection Data / S. S. Drachev, G. L. Johnson, S. W. Laxon, D. C. McAdoo and H. Kassens. - High Resolution Seismic Studies in the Laptev Sea Shelf: First Results and Future Needs / B. Kim, G. Grikurov and V. Soloviev. - SECTION F: SUMMARY. - Dynamics and History of the Laptev Sea and its Continental Hinterland: A Summary / J. Thiede, L. Timokhov, H. A. Bauch, D. Bolshiyanov, I. Dmitrenko
    Standort: AWI Lesesaal
    Standort: AWI Lesesaal
    Zweigbibliothek: AWI Bibliothek
    Zweigbibliothek: AWI Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Oxygen-isotope records from Greenland ice cores, indicate numerous rapid climate fluctuations during the last glacial period. North Atlantic marine sediment cores show comparable variability in sea surface temperature and the deposition of ice-rafted debris. In contrast, very few continental ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    ISSN: 1432-0967
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract Impure limestones with interstratified metachert layers were contact metamorphosed and metasomatized by the Bufa del Diente alkali syenite. Massive marbles exhibit mineralogical and stable isotope evidence for limited fluid infiltration, confined to a 17 m wide zone at the contact. Influx of magmatic brines along most metacherts produced up to 4 cm thick wollastonite rims, according to calcite (Cc)+quartz (Qz)= wollastonite (Wo)+CO2, and were observed at distances of up to 400 m from the contact. The produced CO2 exsolved as an immiscible low density CO2-rich fluid. Chert protolith isotope compositions were δ18O (Qz)=27–30%. and δ18O (Cc)=24–27%.. Many wollastonites in infiltrated metacherts have low δ18O ranging from 11–17‰ and confirm that decarbonation occurred in presence of a magmatic-signatured fluid. Large gradients in δ18O (Wo) across the rims may reach 6‰ The δ18O of remaining quartz is often lowered to 15–20‰ whereas caleites largely retained their original compositions. The isotopic reversals of up to 10‰ between quartz and calcite along with reaction textures demonstrate non-equilibrium between infiltrating fluid in the aquifer and the assemblage calcite+quartz+wollastonite. This is compatible with the assumption of a down-temperature flow of magmatic fluids that occurred exclusively in the remaining quarzite layer. The δ13C (Cc) and δ18O (Cc) of marble calcites measured perpendicular to two metachert bands reveal significant isotopic alterations along distances of 4.5 cm and 7.5 cm from the wollastonite-marble boundary only into the hanging wall marble, suggesting an advection process caused by a fluid phase which movel upwards. Covariation trends of δ13C (Cc) and δ18O (Cc) across the alteration front indicate that this fluid was CO2-rich. Mass balance calculations show that all CO2-rich fluid produced by the decarbonation reaction was lost into overlying marble. The metachert aquifers did not leak with respect to water-rich fluids.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Contributions to mineralogy and petrology 119 (1995), S. 362-376 
    ISSN: 1432-0967
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract  Impure limestones with interstratified metachert layers were contact metamorphosed and metasomatized by the Bufa del Diente alkali syenite. Massive marbles exhibit mineralogical and stable isotope evidence for limited fluid infiltration, confined to a 17 m wide zone at the contact. Influx of magmatic brines along most metacherts produced up to 4 cm thick wollastonite rims, according to calcite (Cc)+quartz (Qz)= wollastonite (Wo)+CO2, and were observed at distances of up to 400 m from the contact. The produced CO2 exsolved as an immiscible low density CO2-rich fluid. Chert protolith isotope compositions were δ18O (Qz)= 27–30‰ and δ18O (Cc)=24–27‰. Many wollastonites in infiltrated metacherts have low δ18O ranging from 11–17‰ and confirm that decarbonation occurred in presence of a magmatic-signatured fluid. Large gradients in δ18O (Wo) across the rims may reach 6‰. The δ18O of remaining quartz is often lowered to 15–20‰ whereas calcites largely retained their original compositions. The isotopic reversals of up to 10‰ between quartz and calcite along with reaction textures demonstrate non-equilibrium between infiltrating fluid in the aquifer and the assemblage calcite+quartz+wollastonite. This is compatible with the assumption of a down-temperature flow of magmatic fluids that occurred exclusively in the remaining quarzite layer. The δ13C (Cc) and δ18O (Cc) of marble calcites measured perpendicular to two metachert bands reveal significant isotopic alterations along distances of 4.5 cm and 7.5 cm from the wollastonite-marble boundary only into the hanging wall marble, suggesting an advection process caused by a fluid phase which moved upwards. Covariation trends of δ13C (Cc) and δ18O (Cc) across the alteration front indicate that this fluid was CO2-rich. Mass balance calculations show that all CO2-rich fluid produced by the decarbonation reaction was lost into overlying marble. The metachert aquifers did not leak with respect to water-rich fluids.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Publikationsdatum: 1999-08-01
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von Springer Nature
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Publikationsdatum: 1995-05-01
    Print ISSN: 0010-7999
    Digitale ISSN: 1432-0967
    Thema: Geologie und Paläontologie
    Publiziert von Springer
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Publikationsdatum: 1995-04-01
    Print ISSN: 0010-7999
    Digitale ISSN: 1432-0967
    Thema: Geologie und Paläontologie
    Publiziert von Springer
    Standort Signatur Erwartet Verfügbarkeit
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