Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR
The elastic response of solid earth to glacier and ice sheet melting, the most important consequences of climate change, is a contemporaneous uplift. Here, we use interferometric synthetic aperture radar (InSAR) measurements to detect crustal deformation and mass loss near the Helheim glacier, one o...
Published in: | Remote Sensing |
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Language: | English |
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2022
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5013062 2023-05-15T16:20:59+02:00 Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR Erfani Jazi, Z. Motagh, M. Klemann, V. 2022 application/pdf https://gfzpublic.gfz-potsdam.de/pubman/item/item_5013062 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5013062_1/component/file_5013071/5013062.pdf eng eng info:eu-repo/semantics/altIdentifier/doi/10.3390/rs14163956 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5013062 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5013062_1/component/file_5013071/5013062.pdf info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ CC-BY Remote Sensing info:eu-repo/semantics/article 2022 ftgfzpotsdam https://doi.org/10.3390/rs14163956 2022-09-14T05:58:21Z The elastic response of solid earth to glacier and ice sheet melting, the most important consequences of climate change, is a contemporaneous uplift. Here, we use interferometric synthetic aperture radar (InSAR) measurements to detect crustal deformation and mass loss near the Helheim glacier, one of the largest glaciers in southeastern Greenland. The InSAR time series of Sentinel-1 data between April 2016 and July 2020 suggest that there is a maximum cumulative displacement of ~6 cm in the line of sight (LOS) direction from the satellite to the ground near Helheim. We use an exponentially decreasing model of the thinning rate, which assumes that the mass loss starts at the lower-elevation terminal region of the glacier and continues to the higher-elevation interior. A linear inversion of the derived crustal uplift in the vicinity of bedrock using this model for surface loading in an elastic half-space suggests a mass loss of 8.33 Gt/year, which agrees with the results from other studies. Article in Journal/Newspaper glacier Greenland Ice Sheet GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Greenland Remote Sensing 14 16 3956 |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
The elastic response of solid earth to glacier and ice sheet melting, the most important consequences of climate change, is a contemporaneous uplift. Here, we use interferometric synthetic aperture radar (InSAR) measurements to detect crustal deformation and mass loss near the Helheim glacier, one of the largest glaciers in southeastern Greenland. The InSAR time series of Sentinel-1 data between April 2016 and July 2020 suggest that there is a maximum cumulative displacement of ~6 cm in the line of sight (LOS) direction from the satellite to the ground near Helheim. We use an exponentially decreasing model of the thinning rate, which assumes that the mass loss starts at the lower-elevation terminal region of the glacier and continues to the higher-elevation interior. A linear inversion of the derived crustal uplift in the vicinity of bedrock using this model for surface loading in an elastic half-space suggests a mass loss of 8.33 Gt/year, which agrees with the results from other studies. |
format |
Article in Journal/Newspaper |
author |
Erfani Jazi, Z. Motagh, M. Klemann, V. |
spellingShingle |
Erfani Jazi, Z. Motagh, M. Klemann, V. Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR |
author_facet |
Erfani Jazi, Z. Motagh, M. Klemann, V. |
author_sort |
Erfani Jazi, Z. |
title |
Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR |
title_short |
Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR |
title_full |
Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR |
title_fullStr |
Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR |
title_full_unstemmed |
Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR |
title_sort |
inferring mass loss by measuring contemporaneous deformation around the helheim glacier, southeastern greenland, using sentinel-1 insar |
publishDate |
2022 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5013062 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5013062_1/component/file_5013071/5013062.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_source |
Remote Sensing |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/rs14163956 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5013062 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5013062_1/component/file_5013071/5013062.pdf |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/rs14163956 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
16 |
container_start_page |
3956 |
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1766009001980461056 |