Antarctic Ice Sheet and climate history since the Last Glacial Maximum
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چکیده
منابع مشابه
Dynamics of the last glacial maximum Antarctic ice-sheet and its response to ocean forcing.
Retreat of the Last Glacial Maximum (LGM) Antarctic ice sheet is thought to have been initiated by changes in ocean heat and eustatic sea level propagated from the Northern Hemisphere (NH) as northern ice sheets melted under rising atmospheric temperatures. The extent to which spatial variability in ice dynamics may have modulated the resultant pattern and timing of decay of the Antarctic ice s...
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The spread of C4 grasses in the late Neogene is one of the most important ecological transitions of the Cenozoic, but the primary driver of this global expansion is widely debated. We use the stable carbon isotopic composition (δ(13)C) of bison and mammoth tissues as a proxy for the relative abundance of C3 and C4 vegetation in their grazing habitat to determine climatic and atmospheric CO2 con...
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A sediment model and retreat history for the Ross Ice (Sheet) Shelf in the Western Ross Sea since the Last Glacial Maximum" (2007). Related Publications from ANDRILL Affiliates. Summary Three sediment gravity cores collected from beneath the McMurdo Ice Shelf and six piston cores from the Erebus Basin (in McMurdo Sound) and the Lewis Basin (north of Ross Island) were analysed in order to constr...
متن کاملAntarctic ice sheet discharge driven by atmosphere-ocean feedbacks at the Last Glacial Termination
Reconstructing the dynamic response of the Antarctic ice sheets to warming during the Last Glacial Termination (LGT; 18,000-11,650 yrs ago) allows us to disentangle ice-climate feedbacks that are key to improving future projections. Whilst the sequence of events during this period is reasonably well-known, relatively poor chronological control has precluded precise alignment of ice, atmospheric...
متن کاملSupport for the Innuitian Ice Sheet in the Canadian High Arctic during the Last Glacial Maximum
The extent of glacier ice in the Canadian High Arctic during the Last Glacial Maximum (LGM) has been debated for decades. One school proposed a regional Innuitian Ice Sheet whereas another proposed a smaller, non-contiguous Franklin Ice Complex. Research throughout western Nares Strait supports coalescent Innuitian and Greenland ice during the LGM, based on widespread glacial and marine deposit...
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ژورنال
عنوان ژورنال: PAGES news
سال: 2009
ISSN: 1563-0803,1563-0803
DOI: 10.22498/pages.17.1.28