Sea-level response to ice sheet evolution: An ocean perspective
The ocean's influence upon and response to Antarctic ice sheet changes is considered in relation to sea level rise over recent and future decades. Assuming present day ice fronts are in approximate equilibrium, a preliminary budget for the ice sheet is estimated from accumulation vs. iceberg ca...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19910017261 2023-05-15T13:42:52+02:00 Sea-level response to ice sheet evolution: An ocean perspective Jacobs, Stanley S. Unclassified, Unlimited, Publicly available May 1, 1991 application/pdf http://hdl.handle.net/2060/19910017261 unknown Document ID: 19910017261 Accession ID: 91N26575 http://hdl.handle.net/2060/19910017261 No Copyright CASI OCEANOGRAPHY NASA. Goddard Space Flight Center, West Antarctic Ice Sheet Initiative. Volume 2: Discipline Reviews; p 23-47 1991 ftnasantrs 2015-03-15T05:16:45Z The ocean's influence upon and response to Antarctic ice sheet changes is considered in relation to sea level rise over recent and future decades. Assuming present day ice fronts are in approximate equilibrium, a preliminary budget for the ice sheet is estimated from accumulation vs. iceberg calving and the basal melting that occurs beneath floating ice shelves. Iceberg calving is derived from the volume of large bergs identified and tracked by the Navy/NOAA Joint Ice Center and from shipboard observations. Basal melting exceeds 600 cu km/yr and is concentrated near the ice fronts and ice shelf grounding lines. An apparent negative mass balance for the Antarctic ice sheet may result from an anomalous calving rate during the past decade, but there are large uncertainties associated with all components of the ice budget. The results from general circulation models are noted in the context of projected precipitation increases and ocean temperature changes on and near the continent. An ocean research program that could help refine budget estimates is consistent with goals of the West Antarctic Ice Sheet Initiative. Other/Unknown Material Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves Iceberg* NASA Technical Reports Server (NTRS) Antarctic The Antarctic West Antarctic Ice Sheet |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
OCEANOGRAPHY |
spellingShingle |
OCEANOGRAPHY Jacobs, Stanley S. Sea-level response to ice sheet evolution: An ocean perspective |
topic_facet |
OCEANOGRAPHY |
description |
The ocean's influence upon and response to Antarctic ice sheet changes is considered in relation to sea level rise over recent and future decades. Assuming present day ice fronts are in approximate equilibrium, a preliminary budget for the ice sheet is estimated from accumulation vs. iceberg calving and the basal melting that occurs beneath floating ice shelves. Iceberg calving is derived from the volume of large bergs identified and tracked by the Navy/NOAA Joint Ice Center and from shipboard observations. Basal melting exceeds 600 cu km/yr and is concentrated near the ice fronts and ice shelf grounding lines. An apparent negative mass balance for the Antarctic ice sheet may result from an anomalous calving rate during the past decade, but there are large uncertainties associated with all components of the ice budget. The results from general circulation models are noted in the context of projected precipitation increases and ocean temperature changes on and near the continent. An ocean research program that could help refine budget estimates is consistent with goals of the West Antarctic Ice Sheet Initiative. |
format |
Other/Unknown Material |
author |
Jacobs, Stanley S. |
author_facet |
Jacobs, Stanley S. |
author_sort |
Jacobs, Stanley S. |
title |
Sea-level response to ice sheet evolution: An ocean perspective |
title_short |
Sea-level response to ice sheet evolution: An ocean perspective |
title_full |
Sea-level response to ice sheet evolution: An ocean perspective |
title_fullStr |
Sea-level response to ice sheet evolution: An ocean perspective |
title_full_unstemmed |
Sea-level response to ice sheet evolution: An ocean perspective |
title_sort |
sea-level response to ice sheet evolution: an ocean perspective |
publishDate |
1991 |
url |
http://hdl.handle.net/2060/19910017261 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic The Antarctic West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves Iceberg* |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves Iceberg* |
op_source |
CASI |
op_relation |
Document ID: 19910017261 Accession ID: 91N26575 http://hdl.handle.net/2060/19910017261 |
op_rights |
No Copyright |
_version_ |
1766173735389233152 |