date: 2022-08-23T08:52:59Z
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pdf:docinfo:title: Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR
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Keywords: Helheim glacier; isostatic rebound; mass loss; Sentinel-1A; InSAR
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subject: 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.
dc:creator: Zohreh Erfani Jazi, Mahdi Motagh and Volker Klemann
dcterms:created: 2022-08-23T06:58:11Z
Last-Modified: 2022-08-23T08:52:59Z
dcterms:modified: 2022-08-23T08:52:59Z
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title: Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR
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pdf:docinfo:keywords: Helheim glacier; isostatic rebound; mass loss; Sentinel-1A; InSAR
pdf:docinfo:modified: 2022-08-23T08:52:59Z
meta:save-date: 2022-08-23T08:52:59Z
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dc:title: Inferring Mass Loss by Measuring Contemporaneous Deformation around the Helheim Glacier, Southeastern Greenland, Using Sentinel-1 InSAR
modified: 2022-08-23T08:52:59Z
cp:subject: 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.
pdf:docinfo:subject: 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.
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pdf:docinfo:creator: Zohreh Erfani Jazi, Mahdi Motagh and Volker Klemann
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creator: Zohreh Erfani Jazi, Mahdi Motagh and Volker Klemann
meta:author: Zohreh Erfani Jazi, Mahdi Motagh and Volker Klemann
dc:subject: Helheim glacier; isostatic rebound; mass loss; Sentinel-1A; InSAR
meta:creation-date: 2022-08-23T06:58:11Z
created: Tue Aug 23 08:58:11 CEST 2022
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meta:keyword: Helheim glacier; isostatic rebound; mass loss; Sentinel-1A; InSAR
Author: Zohreh Erfani Jazi, Mahdi Motagh and Volker Klemann
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