Dynamics of Glaciers and Ice Sheets at the Ocean Margin from Airborne and Satellite Data
The modern contribution of glaciers and ice sheets to sea level rise increases with time and has largely been attributed to anthropogenic sources. The mass losses through the dynamic discharge of ice into the ocean has played a major role in the last two decades with a widespread acceleration of mar...
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ftcdlib:qt3bj084zr 2023-05-15T13:24:15+02:00 Dynamics of Glaciers and Ice Sheets at the Ocean Margin from Airborne and Satellite Data Millan, Romain 173 2018-01-01 application/pdf http://www.escholarship.org/uc/item/3bj084zr en eng eScholarship, University of California http://www.escholarship.org/uc/item/3bj084zr qt3bj084zr public Millan, Romain. (2018). Dynamics of Glaciers and Ice Sheets at the Ocean Margin from Airborne and Satellite Data. UC Irvine: Earth System Science. Retrieved from: http://www.escholarship.org/uc/item/3bj084zr Environmental science Geophysics Remote sensing airborne gravity bedrock topography glaciers ice dynamics ice sheets satellite remote sensing dissertation 2018 ftcdlib 2018-08-17T22:52:37Z The modern contribution of glaciers and ice sheets to sea level rise increases with time and has largely been attributed to anthropogenic sources. The mass losses through the dynamic discharge of ice into the ocean has played a major role in the last two decades with a widespread acceleration of marine terminating glaciers. Recent studies have shown that these changes are closely linked to the ocean conditions, the bedrock and fjord topography. It is therefore crucial to document in details the evolution of glaciers and ice sheets, the bedrock topography and ocean properties to understand how and why the glaciers have been changing recently. Therefore, the aim of this thesis is to improve our understanding of ice dynamics and ice-ocean interaction by using a set of satellite and airborne remote sensing data over key regions. We describe the evolution of glacier dynamics and the detailed partitioning of the mass losses of the Queen Elizabeth Islands, Canada since the 1990s, which are major contributors to recent sea level rise. In Antarctica, we provide the first map of the sub-ice shelf bathymetry of the largest glaciers in the Amundsen Sea Embayment that reveals deep pathways for circumpolar warm water up to the grounding line of the glaciers. Finally, we assembled a comprehensive map of the bedrock and fjord topography of the southeastern coast of Greenland, and interpret the pattern of glacier retreat during the last 80 years, which was not possible before. The work proposed help to understand the recent deglaciation history of key regions in the Arctic, Greenland and Antarctica. The new mapping of sub-ice shelf, bedrock and fjord topography provides invaluable insights for mass balance calculation, ocean and ice-sheet modeling. Doctoral or Postdoctoral Thesis Amundsen Sea Antarc* Antarctica Arctic glacier glacier* Greenland Ice Sheet Ice Shelf Queen Elizabeth Islands University of California: eScholarship Arctic Amundsen Sea Canada Greenland |
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Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
Environmental science Geophysics Remote sensing airborne gravity bedrock topography glaciers ice dynamics ice sheets satellite remote sensing |
spellingShingle |
Environmental science Geophysics Remote sensing airborne gravity bedrock topography glaciers ice dynamics ice sheets satellite remote sensing Millan, Romain Dynamics of Glaciers and Ice Sheets at the Ocean Margin from Airborne and Satellite Data |
topic_facet |
Environmental science Geophysics Remote sensing airborne gravity bedrock topography glaciers ice dynamics ice sheets satellite remote sensing |
description |
The modern contribution of glaciers and ice sheets to sea level rise increases with time and has largely been attributed to anthropogenic sources. The mass losses through the dynamic discharge of ice into the ocean has played a major role in the last two decades with a widespread acceleration of marine terminating glaciers. Recent studies have shown that these changes are closely linked to the ocean conditions, the bedrock and fjord topography. It is therefore crucial to document in details the evolution of glaciers and ice sheets, the bedrock topography and ocean properties to understand how and why the glaciers have been changing recently. Therefore, the aim of this thesis is to improve our understanding of ice dynamics and ice-ocean interaction by using a set of satellite and airborne remote sensing data over key regions. We describe the evolution of glacier dynamics and the detailed partitioning of the mass losses of the Queen Elizabeth Islands, Canada since the 1990s, which are major contributors to recent sea level rise. In Antarctica, we provide the first map of the sub-ice shelf bathymetry of the largest glaciers in the Amundsen Sea Embayment that reveals deep pathways for circumpolar warm water up to the grounding line of the glaciers. Finally, we assembled a comprehensive map of the bedrock and fjord topography of the southeastern coast of Greenland, and interpret the pattern of glacier retreat during the last 80 years, which was not possible before. The work proposed help to understand the recent deglaciation history of key regions in the Arctic, Greenland and Antarctica. The new mapping of sub-ice shelf, bedrock and fjord topography provides invaluable insights for mass balance calculation, ocean and ice-sheet modeling. |
format |
Doctoral or Postdoctoral Thesis |
author |
Millan, Romain |
author_facet |
Millan, Romain |
author_sort |
Millan, Romain |
title |
Dynamics of Glaciers and Ice Sheets at the Ocean Margin from Airborne and Satellite Data |
title_short |
Dynamics of Glaciers and Ice Sheets at the Ocean Margin from Airborne and Satellite Data |
title_full |
Dynamics of Glaciers and Ice Sheets at the Ocean Margin from Airborne and Satellite Data |
title_fullStr |
Dynamics of Glaciers and Ice Sheets at the Ocean Margin from Airborne and Satellite Data |
title_full_unstemmed |
Dynamics of Glaciers and Ice Sheets at the Ocean Margin from Airborne and Satellite Data |
title_sort |
dynamics of glaciers and ice sheets at the ocean margin from airborne and satellite data |
publisher |
eScholarship, University of California |
publishDate |
2018 |
url |
http://www.escholarship.org/uc/item/3bj084zr |
op_coverage |
173 |
geographic |
Arctic Amundsen Sea Canada Greenland |
geographic_facet |
Arctic Amundsen Sea Canada Greenland |
genre |
Amundsen Sea Antarc* Antarctica Arctic glacier glacier* Greenland Ice Sheet Ice Shelf Queen Elizabeth Islands |
genre_facet |
Amundsen Sea Antarc* Antarctica Arctic glacier glacier* Greenland Ice Sheet Ice Shelf Queen Elizabeth Islands |
op_source |
Millan, Romain. (2018). Dynamics of Glaciers and Ice Sheets at the Ocean Margin from Airborne and Satellite Data. UC Irvine: Earth System Science. Retrieved from: http://www.escholarship.org/uc/item/3bj084zr |
op_relation |
http://www.escholarship.org/uc/item/3bj084zr qt3bj084zr |
op_rights |
public |
_version_ |
1766378335098634240 |