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  • 1
    Online Resource
    Online Resource
    San Diego :Elsevier,
    Keywords: Ice sheets-Antarctica. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (806 pages)
    Edition: 2nd ed.
    ISBN: 9780128191101
    DDC: 571.8
    Language: English
    Note: Front Cover -- Antarctic Climate Evolution -- Copyright Page -- Contents -- List of contributors -- Preface -- 1 Antarctic Climate Evolution - second edition -- 1.1 Introduction -- 1.2 Structure and content of the book -- Acknowledgements -- References -- 2 Sixty years of coordination and support for Antarctic science - the role of SCAR -- 2.1 Introduction -- 2.2 Scientific value of research in Antarctica and the Southern Ocean -- 2.3 The international framework in which SCAR operates -- 2.4 The organisation of SCAR -- 2.5 Sixty years of significant Antarctic science discoveries -- 2.6 Scientific Horizon Scan -- 2.7 Summary -- References -- Appendix -- 3 Cenozoic history of Antarctic glaciation and climate from onshore and offshore studies -- 3.1 Introduction -- 3.2 Long-term tectonic drivers and ice sheet evolution -- 3.3 Global climate variability and direct evidence for Antarctic ice sheet variability in the Cenozoic -- 3.3.1 Late Cretaceous to early Oligocene evidence of Antarctic ice sheets and climate variability -- 3.3.2 The Eocene-Oligocene transition and continental-scale glaciation of Antarctica -- 3.3.3 Transient glaciations of the Oligocene and Miocene -- 3.3.4 Pliocene to Pleistocene -- 3.4 Regional seismic stratigraphies and drill core correlations, and future priorities to reconstruct Antarctica's Cenozoic... -- 3.4.1 Ross Sea -- 3.4.2 Amundsen Sea -- 3.4.3 Bellingshausen Sea and Pacific coastline of Antarctic Peninsula -- 3.4.4 The Northern Antarctic Peninsula and South Shetland Islands -- 3.4.5 The Eastern Margin of the Antarctic Peninsula -- 3.4.6 The South Orkney Microcontinent and adjacent deep-water basins -- 3.4.7 East Antarctic Margin -- 3.4.7.1 Weddell Sea -- 3.4.7.1.1 Gondwana break-up, Weddell Sea opening and pre-ice-sheet depositional environment. , 3.4.7.1.2 The Eocene-Oligocene transition and paleoenvironment during increasing glacial conditions -- 3.4.7.1.3 Recent geophysical survey beneath the Ekström Ice Shelf and future directions for drilling -- 3.4.7.2 Prydz Bay -- 3.4.7.2.1 Early Cenozoic greenhouse and earliest glacial phase in late Eocene -- 3.4.7.2.2 Oligocene-Miocene ice-sheet development -- 3.4.7.2.3 The Polar Ice Sheet (late Miocene(?)-Pleistocene) -- 3.4.7.3 East Antarctic Margin - Sabrina Coast -- 3.4.7.4 Wilkes Land margin and Georges V Land -- 3.5 Summary, future directions and challenges -- Acknowledgements -- References -- 4 Water masses, circulation and change in the modern Southern Ocean -- 4.1 Introduction -- 4.1.1 Defining the Southern Ocean -- 4.2 Water masses - characteristics and distribution -- 4.2.1 Upper ocean -- 4.2.2 Intermediate depth waters -- 4.2.3 Deep water -- 4.2.4 Bottom water -- 4.3 Southern Ocean circulation -- 4.3.1 Antarctic Circumpolar Current (ACC) -- 4.3.2 Southern Ocean meridional overturning circulation (SOMOC) -- 4.3.3 Deep western boundary currents -- 4.3.3.1 Pacific deep western boundary current -- 4.3.3.2 Indian deep western boundary currents -- 4.3.3.3 Atlantic deep western boundary current -- 4.3.4 Subpolar circulation - gyres, slope and coastal currents -- 4.3.4.1 Gyres -- 4.3.4.2 Antarctic slope and coastal currents -- 4.4 Modern Southern Ocean change -- 4.4.1 Climate change -- 4.4.2 Ocean change -- 4.4.3 Change in dynamics and circulation -- 4.5 Concluding remarks -- References -- 5 Advances in numerical modelling of the Antarctic ice sheet -- 5.1 Introduction and aims -- 5.2 Advances in ice sheet modelling -- 5.2.1 Grounding line physics -- 5.2.2 Adaptive grids -- 5.2.3 Parallel ice sheet model - PISM -- 5.2.4 Coupled models -- 5.3 Model input - bed data -- 5.4 Advances in knowledge of bed processes -- 5.5 Model intercomparison. , 5.6 Brief case studies -- 5.7 Future work -- References -- 6 The Antarctic Continent in Gondwana: a perspective from the Ross Embayment and Potential Research Targets for Future Inve... -- 6.1 Introduction -- 6.2 The Antarctic plate and the present-day geological setting of the Ross Embayment -- 6.3 East Antarctica -- 6.3.1 The Main Geological Units during the Paleoproterozoic-Early Neoproterozoic Rodinia Assemblage -- 6.3.2 From Rodinia breakup to Gondwana (c. 800-650Ma) -- 6.3.3 The 'Ross Orogen' in the Transantarctic Mountains during the late Precambrian-early Paleozoic evolution of the paleo-... -- 6.4 West Antarctic Accretionary System -- 6.4.1 West Antarctica in the Precambrian to Mesozoic (c. 180Ma) evolution of Gondwana until the middle Jurassic breakup -- 6.4.1.1 Precambrian to Cambrian metamorphic basement -- 6.4.1.2 Devono-Carboniferous arc magmatism ('Borchgrevink Event') (c. 370-350Ma) -- 6.4.1.3 Beacon Supergroup (Devonian-Permo-Triassic-earliest Jurassic) -- 6.4.1.4 The Ellsworth-Whitmore Mountains Terrane and the Permo-Triassic arc magmatism -- 6.4.1.5 Ferrar Supergroup and the Gondwana breakup (c. 180Ma) -- 6.4.1.6 The Antarctic Andean Orogen -- 6.5 Mesozoic to Cenozoic Tectonic Evolution of the Transantarctic Mountains -- 6.6 Tectonic evolution in the Ross Sea Sector during the Cenozoic -- 6.7 Concluding remarks, open problems and potential research themes for future geoscience investigations in Antarctica -- 6.7.1 Persistent challenges for onshore geoscience investigations -- 6.7.2 Antarctica and the Ross Orogen in the Transantarctic Mountains -- 6.7.3 Antarctica after Gondwana fragmentation -- Acknowledgements -- References -- 7 The Eocene-Oligocene boundary climate transition: an Antarctic perspective -- 7.1 Introduction -- 7.2 Background -- 7.2.1 Plate tectonic setting -- 7.2.2 Antarctic paleotopography. , 7.2.3 Paleoceanographic setting -- 7.2.4 Global average and regional sea level response -- 7.2.5 Proxies to reconstruct past Antarctic climatic and environmental evolution -- 7.2.6 Far-field proxies -- 7.3 Antarctic Sedimentary Archives -- 7.3.1 Land-based outcrops -- 7.3.1.1 Antarctic Peninsula Region -- 7.3.1.2 King George (25 de Mayo) Island, South Shetland Islands -- 7.3.1.3 The Ross Sea Region -- 7.3.2 Sedimentary archives from drilling on the Antarctic Margin -- 7.3.2.1 Drill cores in the western Ross Sea -- 7.3.2.2 The Prydz Bay Region -- 7.3.2.3 Weddell Sea -- 7.3.2.4 Wilkes Land -- 7.4 Summary of climate signals from Antarctic sedimentary archives -- 7.4.1 Longer-term changes -- 7.4.2 The climate of the Eocene-Oligocene transition -- 7.5 The global context of Earth and climate system changes across the EOT -- 7.5.1 Climate modelling -- 7.5.2 Relative sea-level change around Antarctica -- 7.6 Summary -- 7.6.1 Early-middle Eocene polar warmth -- 7.6.2 Late Eocene cooling -- 7.6.3 Eocene-Oligocene transition -- Acknowledgements -- References -- 8 Antarctic Ice Sheet dynamics during the Late Oligocene and Early Miocene: climatic conundrums revisited -- 8.1 Introduction -- 8.2 Oligocene-Miocene Transition in Antarctic geological records and its climatic significance -- 8.3 Conundrums revisited -- 8.3.1 What caused major transient glaciation of Antarctica across the OMT? -- 8.3.2 Apparent decoupling of Late Oligocene climate and ice volume? -- 8.4 Concluding remarks -- Acknowledgements -- References -- 9 Antarctic environmental change and ice sheet evolution through the Miocene to Pliocene - a perspective from the Ross Sea ... -- 9.1 Introduction -- 9.1.1 Overview and relevance -- 9.1.2 Far-field records of climate and ice sheet variability -- 9.1.2.1 The Early Miocene -- 9.1.2.2 The mid-Miocene -- 9.1.2.3 The Late Miocene -- 9.1.2.4 The Pliocene. , 9.1.3 Southern Ocean Paleogeography and Paleoceanography -- 9.1.4 Land elevation change and influences on Antarctic Ice Sheet evolution -- 9.2 Records of Miocene to Pliocene climate and ice sheet variability from the Antarctic margin -- 9.2.1 Introduction to stratigraphic records -- 9.2.2 George V Land to Wilkes Land Margin -- 9.2.2.1 Geological setting -- 9.2.2.2 Oceanography of the Adélie coast -- 9.2.2.3 Seismic stratigraphy off the George V Land to Wilkes Land Margin -- 9.2.2.4 Drill core records from the George V Land to Wilkes Land Margin -- 9.2.2.5 Neogene history of the George V Land to Wilkes Land margin -- 9.2.3 The Ross Sea Embayment and Southern Victoria Land -- 9.2.3.1 Geological setting -- 9.2.3.2 Oceanography and climate in the Ross Sea Region -- 9.2.3.3 Seismic stratigraphic records in the Ross Sea -- 9.2.3.4 Stratigraphic records from drill cores in the Ross Sea -- 9.2.3.5 Terrestrial records from Southern Victoria Land -- 9.2.3.6 Neogene history in the Ross Sea Region -- 9.3 Numerical modelling -- 9.3.1 Miocene -- 9.3.2 Pliocene -- 9.4 Synthesis/summary of key climate episodes and transitions in Antarctica through the Miocene and Pliocene -- 9.4.1 Early to mid-Miocene -- 9.4.2 Miocene Climate Optimum -- 9.4.3 Miocene Climate Transition -- 9.4.4 Late Miocene -- 9.4.5 Pliocene -- 9.5 Next steps -- Acknowledgements -- References -- 10 Pleistocene Antarctic climate variability: ice sheet, ocean and climate interactions -- 10.1 Background and motivation -- 10.1.1 Introduction -- 10.1.2 Orbital cyclicity and climate -- 10.1.3 Antarctic feedbacks in the global climate system -- 10.1.4 Strengths of Pleistocene research on Antarctica -- 10.2 Archives of Pleistocene Antarctic climate and climate-relevant processes -- 10.2.1 Polar ice cores -- 10.2.1.1 Background and characteristics of ice core records -- 10.2.1.2 Ice core climate proxies. , 10.2.1.3 Recent advances in ice core proxies and attempts to obtain ice older than one million years.
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  • 2
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Climatic changes -- Antarctica. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (606 pages)
    Edition: 1st ed.
    ISBN: 9780080931616
    DDC: 571.8
    Language: English
    Note: Front cover -- Antarctic Climate Evolution -- Copyright page -- Contents -- Preface -- Chapter 1. Antarctic Climate Evolution -- 1.1. Introduction -- 1.2. Antarctic Glacial History -- 1.3. Structure and Content of the Book -- References -- Chapter 2. The International Polar Years: A History of Developments in Antarctic Climate Evolution -- 2.1. Introduction -- 2.2. The First International Polar Year (1882-1883) -- 2.3. The Second International Polar Year (1932-1933) -- 2.4. The Third International Polar YearsolInternational Geophysical Year (1957-1958) -- 2.5. The Fourth International Polar Year (2007-2008) -- References -- Chapter 3. A History of Antarctic Cenozoic Glaciation - View from the Margin -- 3.1. Introduction -- 3.2. Mid-Twentieth Century Advances (1956-1972) -- 3.3. First Antarctic Drilling (1972-1975) -- 3.4. Developments in Drilling and Thinking in the Late 1970s -- 3.5. Discoveries Offshore and on the Continent in the 1980s -- 3.6. Advances in the 1990s -- 3.7. Advances in the First Decade of the Twenty-First Century -- 3.8. Future Prospects for Improving Knowledge of the History of the Antarctic Ice Sheet -- Acknowledgements -- References -- Chapter 4. Circulation and Water Masses of the Southern Ocean: A Review -- 4.1. Introduction -- 4.2. Water Mass Formation and Dispersal -- 4.3. Ocean Circulation -- 4.4. Oceanographic Variability and Change -- Acknowledgements -- References -- Chapter 5. Cenozoic Climate History from Seismic Reflection and Drilling Studies on the Antarctic Continental Margin -- 5.1. Introduction -- 5.2. Ross Sea (G. Brancolini and G. Leitchenkov) -- 5.3. Wilkes Land (C. Escutia and P. O'Brien) -- 5.4. Prydz Bay (P. O'Brien and G. Leitchenkov) -- 5.5. Weddell Sea (Y. Kristoffersen and W. Jokat) -- 5.6. Antarctic Peninsula (R. Larter) -- 5.7. Other Sectors of the Antarctic Continental Margin -- 5.8. Discussion. , 5.9. Summary -- Acknowledgements -- References -- Foldouts -- Chapter 6. Numerical Modelling of the Antarctic Ice Sheet -- 6.1. Introduction -- 6.2. Ice-Sheet Processes -- 6.3. Ice-Sheet Models -- 6.4. Model Inputs -- 6.5. EISMINT -- 6.6. Comparing Ice-Sheet Models with Antarctic Glaciological Data -- 6.7. Ice-Sheet Reconstructions -- 6.8. Summary -- References -- Chapter 7. The Antarctic Continent in Gondwanaland: A Tectonic Review and Potential Research Targets for Future Investigations -- 7.1. Introduction -- 7.2. The Present-Day Geotectonic Setting of Antarctica -- 7.3. The Main Geological Units of Antarctica Before Gondwana Amalgamation -- 7.4. Antarctica in the Gondwana Supercontinent -- 7.5. Antarctic Record of Gondwana Break-Up and Dispersal of the Southern Hemisphere Continents -- 7.6. Open Problems and Potential Research Themes for Future Geoscience Investigations in Antarctica -- Acknowledgements -- References -- Chapter 8. From Greenhouse to Icehouse - The EocenesolOligocene in Antarctica -- 8.1. Introduction -- 8.2. Climate Signals from the Sedimentary Record -- 8.3. Climate Signals from the Terrestrial Realm - Fossil Plants and Palynomorphs -- 8.4. Environmental Changes Documented by Marine Microfossils -- 8.5. Evolution of Ocean Temperatures and Global Ice Volume During the Eocene to Oligocene from the Ocean Isotope Record -- 8.6. Connection of CO2 and Ice-Sheet Inception at the E/O Boundary - Computer Modelling -- 8.7. Summary -- Acknowledgements -- References -- Chapter 9. The Oligocene-Miocene Boundary - Antarctic Climate Response to Orbital Forcing -- 9.1. Introduction -- 9.2. Proxy Records -- 9.3. Records from the Antarctic Margin -- 9.4. Possible Drivers of Change Across the Oligocene-Miocene Boundary -- 9.5. Summary and Conclusions -- References. , Chapter 10. Middle Miocene to Pliocene History of Antarctica and the Southern Ocean -- 10.1. Introduction -- 10.2. East Antarctic Terrestrial Environments -- 10.3. West Antarctic Terrestrial Environments -- 10.4. The Marine Record of the East Antarctic Ice Sheet -- 10.5. The Marine Record of the West Antarctic and Antarctic Peninsula Ice Sheets -- 10.6. Marine Records of the Southern Ocean -- 10.7. Modelling Antarctic Climates and Ice Sheets -- 10.8. Summary -- Acknowledgements -- References -- Chapter 11. Late Pliocene-Pleistocene Antarctic Climate Variability at Orbital and Suborbital Scale: Ice Sheet, Ocean and Atmospheric Interactions -- 11.1. Introduction -- 11.2. Glacial Variability from the Continental Margin Geological Record -- 11.3. Atmospheric Variability from Ice Cores -- 11.4. Oceanic Variability from Southern Ocean Sediment Cores -- 11.5. Modelling of Pleistocene Ice Volume Variations -- 11.6. Synthesis: Antarctic Climate Evolution Since sim3Ma -- Acknowledgements -- References -- Chapter 12. Antarctica at the Last Glacial Maximum, Deglaciation and the Holocene -- 12.1. Introduction -- 12.2. Response of the Ice Sheets to Glacial Climate and Late Quaternary Ice-Sheet Reconstructions -- 12.3. Geological Information -- 12.4. Numerical Modelling Reconstructions -- 12.5. Summary -- References -- Chapter 13. Concluding Remarks: Recent Changes in Antarctica and Future Research -- References -- Subject Index.
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  • 3
    Keywords: Aufsatzsammlung ; Konferenzschrift ; Antarktis ; Kryosphäre ; Känozoikum ; Klimaänderung
    Type of Medium: Book
    Pages: VI S.,S. 1-298 , Ill., graph. Darst.
    Series Statement: Palaeogeography, palaeoclimatology, palaeoecology 260.2008,1/2
    Language: English
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  • 4
    Keywords: Konferenzschrift ; Antarktis ; Gletschereis ; Klimaänderung
    Type of Medium: Book
    Pages: VII S., S. 87 - 184 , Ill., graph. Darst., Kt.
    Series Statement: Global and planetary change 69.2009,3
    Language: English
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  • 5
    Keywords: Climatic changes ; Ice sheets ; Glacial epoch ; Paleoclimatology Cenozoic ; Paleoclimatology ; Antarctica Climate ; Aufsatzsammlung ; Antarktis ; Känozoikum ; Klimaänderung
    Type of Medium: Book
    Pages: xvii, 786 Seiten , Illustrationen, Karten
    Edition: Second edition
    ISBN: 9780128191095
    DDC: 551.69989
    RVK:
    Language: English
    Note: Literaturangaben
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  • 6
  • 7
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Between 34 and 15 million years (Myr) ago, when planetary temperatures were 3–4 °C warmer than at present and atmospheric CO2 concentrations were twice as high as today, the Antarctic ice sheets may have been unstable. Oxygen isotope records from deep-sea ...
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 126 (1996), S. 0 
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Numerous short features in the ocean magnetic anomaly patterns (25–100 nT amplitude, 8–25 km wavelength: tiny wiggles) have been identified in several independent magnetic profiles, and have been modelled either as short polarity intervals (‘cryptochrons’) or as palaeointensity fluctuations (Cande & Kent 1992). In the last few years, several authors (e.g. Tauxe et al. 1994; Lowrie & Lanci 1994; Hartl, Tauxe & Constable 1993) have identified, on high-resolution magnetostratigraphic sections, short polarity intervals, correlated with cryptochrons deriving from the ocean floor. The record of a previously undetected short normal-polarity event, lasting about 11 kyr, from an upper Tortonian-lower Messinian sedimentary sequence (e.g. Compagnoni et al. 1992) in central Italy (42.0°N, 13.0°E), is reported here. The north virtual geomagnetic polar (VGP) path of the R-N transition appears to be strongly confined to a meridian band passing over the Americas about 90° away from the site longitude, as reported in recent years for a large number of reversals. This short feature is lacking in the corresponding ocean-floor magnetic anomaly patterns, probably because of the difficulties of resolving polarity intervals as short as this one in ocean magnetic profiles.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 123 (1995), S. 0 
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A revision of the magnetostratigraphy in the Valle Ricca (Monterotondo, Rome) Plio-Pleistocene section was carried out. This section, consisting mainly of blue-grey marly clays, was previously investigated for palaeomagnetic effects by Arias et al. (1980, 1990), who detected a normal polarity interval, close to a volcanic ash layer, which was correlated to the Reunion subchron. This interpretation conflicts, however, with new biostratigraphic data and palaeomagnetic observations. In order to investigate the possible origin of these discrepancies, we performed a detailed sampling for palaeomagnetic and rock-magnetic analyses in the controversial interval around the volcanic ash layer. The present results show strong variations in the rock-magnetic parameters and suggest significant changes in the magnetic mineralogy. Two levels with a high-intensity, low-temperature, normal component of magnetization were distinguished. At these two levels, the rock-magnetic parameters are typical of greigite, and a widespread occurrence of framboids of micron-sized iron sulphide grains was found by mineralogical analyses. A high-temperature reversed component of magnetization, carried by magnetite, was isolated for the whole interval investigated. We demonstrate that the previously recognized normal polarity interval is the effect of changes in the magnetic mineralogy and it does not represent a true reversal of the Earth's magnetic field. The origin of the low-temperature normal component of magnetization is discussed in light of the present knowledge about greigite formation and remanence acquisition.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford UK : Blackwell Science Ltd
    Sedimentology 47 (2000), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Type of Medium: Electronic Resource
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