West Antarctic Ice Sheet Retreat During The Last Interglacial
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West Antarctic Ice Sheet Retreat During The Last Interglacial
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Author : Gail Ruth Muldoon
language : en
Publisher:
Release Date : 2018
West Antarctic Ice Sheet Retreat During The Last Interglacial written by Gail Ruth Muldoon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
The Last Interglacial (116 ka - 130 ka) is the most recent time when Earth's climate was as warm or warmer than it is today. It therefore may make a suitable proxy for understanding the impacts of modern climate change. One such impact of immediate relevance to the modern world is that of sea level rise. Global sea level is currently rising at an accelerating pace, threatening lives and economies around the world. Notably, evidence from paleoclimate data suggests global sea level during the Last Interglacial was at least 6.6 m higher than present sea level and perhaps more than 8 m higher. As the Earth adjusts to the rapid onset of modern climate change, we may expect sea level to approach that of the Last Interglacial. Noticeable changes in sea level have a number of sources, including melting glaciers, ice sheets, and ocean thermal expansion. The Antarctic Ice Sheet has been inferred to be the largest contributor to Last Interglacial sea level change, adding between 4.1 and 5.8 m to global sea level during that time. Most of this change is expected to come from the West Antarctic Ice Sheet, which is thought to be prone to marine ice sheet instability. However, uncertain basal boundary conditions and ocean forcing make it a challenge to know how the ice sheet may have lost such a large amount of mass. In this work, I seek to better constrain mass balance and sea level contributions of the Antarctic Ice Sheet during the Last Interglacial and explore evidence from inside the ice sheet itself which may reveal if and how the ice sheet sustained such a large mass balance change during the Last Interglacial. To do so, I use a transient ice sheet model to simulate reconfiguration of the Antarctic Ice Sheet under Last Interglacial conditions and find a stable configuration consistent with estimates of Antarctic contributions to Last Interglacial sea level. I then analyze englacial radar stratigraphy to study the ice dynamics by dating a series of isochronous englacial reflectors which have been mapped through the central West Antarctic Ice Sheet. For comparison to this data, I implement a steady state ice sheet model to simulate englacial isochronous surfaces with various uncertain model boundary conditions.
Growth And Retreat Of The West Antarctic Ice Sheet From The Last Glacial Maximum To The Present In The Eastern Ross Sea Antarctica
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Author : Amanda Beth Mosola
language : en
Publisher:
Release Date : 2004
Growth And Retreat Of The West Antarctic Ice Sheet From The Last Glacial Maximum To The Present In The Eastern Ross Sea Antarctica written by Amanda Beth Mosola and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
West Antarctic Ice Sheet Retreat Chronology Of Two Middle Shelf Grounding Zone Wedges In Eastern Basin Ross Sea Antarctica
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Author : Lenora Nicole Copeland
language : en
Publisher:
Release Date : 2011
West Antarctic Ice Sheet Retreat Chronology Of Two Middle Shelf Grounding Zone Wedges In Eastern Basin Ross Sea Antarctica written by Lenora Nicole Copeland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
The West Antarctic Ice Sheet
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Author :
language : en
Publisher: American Geophysical Union
Release Date : 1998
The West Antarctic Ice Sheet written by and has been published by American Geophysical Union this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Geology categories.
Searise
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Author : Robert A. Bindschadler
language : en
Publisher:
Release Date : 1990
Searise written by Robert A. Bindschadler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Climatic changes categories.
Proceedings of a workshop on the possibility of a rapid rise in sea level following the response of the West Antarctic ice sheet to global warming, and outline of a project to study the phenomenon, called SEARISE : Sea Level Response to Ice Sheet Evolution.
Vanishing Ice
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Author : Vivien Gornitz
language : en
Publisher: Columbia University Press
Release Date : 2019-06-11
Vanishing Ice written by Vivien Gornitz and has been published by Columbia University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-11 with Science categories.
The Arctic is thawing. In summer, cruise ships sail through the once ice-clogged Northwest Passage, lakes form on top of the Greenland Ice Sheet, and polar bears swim farther and farther in search of waning ice floes. At the opposite end of the world, floating Antarctic ice shelves are shrinking. Mountain glaciers are in retreat worldwide, unleashing flash floods and avalanches. We are on thin ice—and with melting permafrost’s potential to let loose still more greenhouse gases, these changes may be just the beginning. Vanishing Ice is a powerful depiction of the dramatic transformation of the cryosphere—the world of ice and snow—and its consequences for the human world. Delving into the major components of the cryosphere, including ice sheets, valley glaciers, permafrost, and floating ice, Vivien Gornitz gives an up-to-date explanation of key current trends in the decline of ice mass. Drawing on a long-term perspective gained by examining changes in the cryosphere and corresponding variations in sea level over millions of years, she demonstrates the link between thawing ice and sea-level rise to point to the social and economic challenges on the horizon. Gornitz highlights the widespread repercussions of ice loss, which will affect countless people far removed from frozen regions, to explain why the big meltdown matters to us all. Written for all readers and students interested in the science of our changing climate, Vanishing Ice is an accessible and lucid warning of the coming thaw.
A Model For Holocene Retreat Of The West Antarctic Ice Sheet
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Author : R.H. Thomas
language : en
Publisher:
Release Date : 1978
A Model For Holocene Retreat Of The West Antarctic Ice Sheet written by R.H. Thomas and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
The Last Great Ice Sheets
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Author : George H. Denton
language : en
Publisher:
Release Date : 1981-02-19
The Last Great Ice Sheets written by George H. Denton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981-02-19 with Science categories.
New York : Wiley, c1981.
West Antarctic Ice Volume
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Author : John H. Mercer
language : en
Publisher:
Release Date :
West Antarctic Ice Volume written by John H. Mercer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Glaciers categories.
Discusses vulnerability of ice sheet to deglaciation from either rising sea level or to warming of environment.
Polar Environments And Global Change
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Author : Roger G. Barry
language : en
Publisher: Cambridge University Press
Release Date : 2018-08-09
Polar Environments And Global Change written by Roger G. Barry and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-09 with Medical categories.
Surveys atmospheric, oceanic and cryospheric processes, present and past conditions, and changes in polar environments.