Discrimination of glacier facies using multi-temporal SAR data
Abstract Glacier facies from the Greenland ice sheet and the Wrangell-St Elias Mountains, Alaska, are analyzed using multi-temporal synthetic aperture radar (SAR) data from the European Space Agency ERS-1 satellite. Distinct zones and facies are visible in multi-temporal SAR data, including the dry-...
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1998
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Online Access: | http://dx.doi.org/10.1017/s0022143000002331 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000002331 |
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crcambridgeupr:10.1017/s0022143000002331 2024-06-23T07:52:59+00:00 Discrimination of glacier facies using multi-temporal SAR data Partington, K. C. 1998 http://dx.doi.org/10.1017/s0022143000002331 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000002331 en eng Cambridge University Press (CUP) Journal of Glaciology volume 44, issue 146, page 42-53 ISSN 0022-1430 1727-5652 journal-article 1998 crcambridgeupr https://doi.org/10.1017/s0022143000002331 2024-06-12T04:04:46Z Abstract Glacier facies from the Greenland ice sheet and the Wrangell-St Elias Mountains, Alaska, are analyzed using multi-temporal synthetic aperture radar (SAR) data from the European Space Agency ERS-1 satellite. Distinct zones and facies are visible in multi-temporal SAR data, including the dry-snow facies, the combined percolation and wet-snow facies, the ice facies, transient melt areas and moraine. In Greenland and south-central Alaska, very similar multi-temporal signatures are evident for the same facies, although these facies are found at lower altitude in West Greenland where the equilibrium line appears to be found at sea level at 71°30?N during the year analyzed (1992-93), probably because of the cooling effect of the eruption of Mount Pinatubo. In Greenland, both the percolation and dry-snow facies are excellent distributed targets for sensor calibration, with backscatter coefficients stable to within 0.2 dB. However, the percolation facies near the top of Mount Wrangell are more complex and less easily delineated than in Greenland, and at high altitude the glacier facies have a multi-temporal signature which depends sensitively on slope orientation. Article in Journal/Newspaper glacier glacier Greenland Ice Sheet Journal of Glaciology Alaska Cambridge University Press Greenland Journal of Glaciology 44 146 42 53 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Glacier facies from the Greenland ice sheet and the Wrangell-St Elias Mountains, Alaska, are analyzed using multi-temporal synthetic aperture radar (SAR) data from the European Space Agency ERS-1 satellite. Distinct zones and facies are visible in multi-temporal SAR data, including the dry-snow facies, the combined percolation and wet-snow facies, the ice facies, transient melt areas and moraine. In Greenland and south-central Alaska, very similar multi-temporal signatures are evident for the same facies, although these facies are found at lower altitude in West Greenland where the equilibrium line appears to be found at sea level at 71°30?N during the year analyzed (1992-93), probably because of the cooling effect of the eruption of Mount Pinatubo. In Greenland, both the percolation and dry-snow facies are excellent distributed targets for sensor calibration, with backscatter coefficients stable to within 0.2 dB. However, the percolation facies near the top of Mount Wrangell are more complex and less easily delineated than in Greenland, and at high altitude the glacier facies have a multi-temporal signature which depends sensitively on slope orientation. |
format |
Article in Journal/Newspaper |
author |
Partington, K. C. |
spellingShingle |
Partington, K. C. Discrimination of glacier facies using multi-temporal SAR data |
author_facet |
Partington, K. C. |
author_sort |
Partington, K. C. |
title |
Discrimination of glacier facies using multi-temporal SAR data |
title_short |
Discrimination of glacier facies using multi-temporal SAR data |
title_full |
Discrimination of glacier facies using multi-temporal SAR data |
title_fullStr |
Discrimination of glacier facies using multi-temporal SAR data |
title_full_unstemmed |
Discrimination of glacier facies using multi-temporal SAR data |
title_sort |
discrimination of glacier facies using multi-temporal sar data |
publisher |
Cambridge University Press (CUP) |
publishDate |
1998 |
url |
http://dx.doi.org/10.1017/s0022143000002331 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000002331 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier glacier Greenland Ice Sheet Journal of Glaciology Alaska |
genre_facet |
glacier glacier Greenland Ice Sheet Journal of Glaciology Alaska |
op_source |
Journal of Glaciology volume 44, issue 146, page 42-53 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000002331 |
container_title |
Journal of Glaciology |
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44 |
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146 |
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42 |
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53 |
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1802644448605110272 |