Surface Deformation and Gravity Changes from Surface and Internal Loads
Air and space borne remote sensing have made it possible to monitor the mass and energy transport at various scales within the cryosphere-hydrosphere-atmosphere system. The recent surface mass balance (the rate of net gain of snow and ice at a geographic point) map for the Antarctic ice sheet is con...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20020050517 2023-05-15T13:51:22+02:00 Surface Deformation and Gravity Changes from Surface and Internal Loads Fang, Ming Hager, Bradford H. Unclassified, Unlimited, Publicly available [2002] application/pdf http://hdl.handle.net/2060/20020050517 unknown Document ID: 20020050517 http://hdl.handle.net/2060/20020050517 No Copyright CASI Earth Resources and Remote Sensing 2002 ftnasantrs 2019-07-21T07:49:06Z Air and space borne remote sensing have made it possible to monitor the mass and energy transport at various scales within the cryosphere-hydrosphere-atmosphere system. The recent surface mass balance (the rate of net gain of snow and ice at a geographic point) map for the Antarctic ice sheet is constructed by interpolating sparse in situ observations (about 1,800 points) with empirically calibrated satellite data of passive back emission of microwaves. The digital elevation model obtained from satellite radar altimetry is used to improve the delineation of the ice flow drainage basins. As important as these results are, the uncertainty remains up to about 2 mm/yr of eustatic sea level change with the net imbalance. In other words, we are still unable to determine even the sign of the contribution of the Antarctic ice sheet to contemporary sea level change. The problem is more likely with the discharge rather than accumulation. Other/Unknown Material Antarc* Antarctic Ice Sheet NASA Technical Reports Server (NTRS) Antarctic The Antarctic |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Earth Resources and Remote Sensing |
spellingShingle |
Earth Resources and Remote Sensing Fang, Ming Hager, Bradford H. Surface Deformation and Gravity Changes from Surface and Internal Loads |
topic_facet |
Earth Resources and Remote Sensing |
description |
Air and space borne remote sensing have made it possible to monitor the mass and energy transport at various scales within the cryosphere-hydrosphere-atmosphere system. The recent surface mass balance (the rate of net gain of snow and ice at a geographic point) map for the Antarctic ice sheet is constructed by interpolating sparse in situ observations (about 1,800 points) with empirically calibrated satellite data of passive back emission of microwaves. The digital elevation model obtained from satellite radar altimetry is used to improve the delineation of the ice flow drainage basins. As important as these results are, the uncertainty remains up to about 2 mm/yr of eustatic sea level change with the net imbalance. In other words, we are still unable to determine even the sign of the contribution of the Antarctic ice sheet to contemporary sea level change. The problem is more likely with the discharge rather than accumulation. |
author |
Fang, Ming Hager, Bradford H. |
author_facet |
Fang, Ming Hager, Bradford H. |
author_sort |
Fang, Ming |
title |
Surface Deformation and Gravity Changes from Surface and Internal Loads |
title_short |
Surface Deformation and Gravity Changes from Surface and Internal Loads |
title_full |
Surface Deformation and Gravity Changes from Surface and Internal Loads |
title_fullStr |
Surface Deformation and Gravity Changes from Surface and Internal Loads |
title_full_unstemmed |
Surface Deformation and Gravity Changes from Surface and Internal Loads |
title_sort |
surface deformation and gravity changes from surface and internal loads |
publishDate |
2002 |
url |
http://hdl.handle.net/2060/20020050517 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
CASI |
op_relation |
Document ID: 20020050517 http://hdl.handle.net/2060/20020050517 |
op_rights |
No Copyright |
_version_ |
1766255200110116864 |