Ice flow dynamics of the Greenland Ice Sheet from SAR interferometry
Synthetic‐aperture radar (SAR) interferograms produced from ESA's ERS‐1 satellite, provide the first synoptic view of ice flow dynamics of the western sector of the Greenland Ice Sheet. Glacial motion is detected in the radar ranging direction at millimetric scales, across a complete sequence o...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
eScholarship, University of California
1995
|
Subjects: | |
Online Access: | https://escholarship.org/uc/item/0f61j0p6 |
id |
ftcdlib:oai:escholarship.org:ark:/13030/qt0f61j0p6 |
---|---|
record_format |
openpolar |
spelling |
ftcdlib:oai:escholarship.org:ark:/13030/qt0f61j0p6 2023-06-11T04:12:07+02:00 Ice flow dynamics of the Greenland Ice Sheet from SAR interferometry Rignot, E Jezek, KC Sohn, HG 575 - 578 1995-03-01 application/pdf https://escholarship.org/uc/item/0f61j0p6 unknown eScholarship, University of California qt0f61j0p6 https://escholarship.org/uc/item/0f61j0p6 CC-BY Geophysical Research Letters, vol 22, iss 5 Meteorology & Atmospheric Sciences article 1995 ftcdlib 2023-05-29T18:00:22Z Synthetic‐aperture radar (SAR) interferograms produced from ESA's ERS‐1 satellite, provide the first synoptic view of ice flow dynamics of the western sector of the Greenland Ice Sheet. Glacial motion is detected in the radar ranging direction at millimetric scales, across a complete sequence of snow accumulation and melting regimes, despite significant variations in their radar scattering properties. Ice flow evolves from a slow, regular motion at the higher elevations. At lower elevations, motion is strongly convoluted by meter‐scale undulations in surface topography, which have a unique interferometric signature that enables a novel approach for retrieving flow direction. Inferred flow directions, combined with surface displacements in the radar ranging direction, yield ice velocity estimates that are within 6% of in‐situ measurements gathered along a 40 km survey line. Application of repeat‐pass SAR interferometry to the entire Greenland Ice Sheet should enable precise mapping of its ice flow dynamics at an unprecedented level of spatial detail. Copyright 1995 by the American Geophysical Union. Article in Journal/Newspaper Greenland Ice Sheet University of California: eScholarship Greenland |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Rignot, E Jezek, KC Sohn, HG Ice flow dynamics of the Greenland Ice Sheet from SAR interferometry |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
Synthetic‐aperture radar (SAR) interferograms produced from ESA's ERS‐1 satellite, provide the first synoptic view of ice flow dynamics of the western sector of the Greenland Ice Sheet. Glacial motion is detected in the radar ranging direction at millimetric scales, across a complete sequence of snow accumulation and melting regimes, despite significant variations in their radar scattering properties. Ice flow evolves from a slow, regular motion at the higher elevations. At lower elevations, motion is strongly convoluted by meter‐scale undulations in surface topography, which have a unique interferometric signature that enables a novel approach for retrieving flow direction. Inferred flow directions, combined with surface displacements in the radar ranging direction, yield ice velocity estimates that are within 6% of in‐situ measurements gathered along a 40 km survey line. Application of repeat‐pass SAR interferometry to the entire Greenland Ice Sheet should enable precise mapping of its ice flow dynamics at an unprecedented level of spatial detail. Copyright 1995 by the American Geophysical Union. |
format |
Article in Journal/Newspaper |
author |
Rignot, E Jezek, KC Sohn, HG |
author_facet |
Rignot, E Jezek, KC Sohn, HG |
author_sort |
Rignot, E |
title |
Ice flow dynamics of the Greenland Ice Sheet from SAR interferometry |
title_short |
Ice flow dynamics of the Greenland Ice Sheet from SAR interferometry |
title_full |
Ice flow dynamics of the Greenland Ice Sheet from SAR interferometry |
title_fullStr |
Ice flow dynamics of the Greenland Ice Sheet from SAR interferometry |
title_full_unstemmed |
Ice flow dynamics of the Greenland Ice Sheet from SAR interferometry |
title_sort |
ice flow dynamics of the greenland ice sheet from sar interferometry |
publisher |
eScholarship, University of California |
publishDate |
1995 |
url |
https://escholarship.org/uc/item/0f61j0p6 |
op_coverage |
575 - 578 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Geophysical Research Letters, vol 22, iss 5 |
op_relation |
qt0f61j0p6 https://escholarship.org/uc/item/0f61j0p6 |
op_rights |
CC-BY |
_version_ |
1768387755911413760 |