Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland
Glacier calving is a key dynamical process of the Greenland Ice Sheet and a major driver of its increasing mass loss. Calving waves, generated by the sudden detachment of ice from the glacier terminus, can reach tens of meters in height and provide very valuable insights into quantifying calving act...
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ftdoajarticles:oai:doaj.org/article:c086375134db413e8a54b134f9accc29 2023-05-15T16:21:11+02:00 Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland A. Wehrlé M. P. Lüthi A. Walter G. Jouvet A. Vieli 2021-12-01T00:00:00Z https://doi.org/10.5194/tc-15-5659-2021 https://doaj.org/article/c086375134db413e8a54b134f9accc29 EN eng Copernicus Publications https://tc.copernicus.org/articles/15/5659/2021/tc-15-5659-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-5659-2021 1994-0416 1994-0424 https://doaj.org/article/c086375134db413e8a54b134f9accc29 The Cryosphere, Vol 15, Pp 5659-5674 (2021) Environmental sciences GE1-350 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.5194/tc-15-5659-2021 2022-12-31T04:50:46Z Glacier calving is a key dynamical process of the Greenland Ice Sheet and a major driver of its increasing mass loss. Calving waves, generated by the sudden detachment of ice from the glacier terminus, can reach tens of meters in height and provide very valuable insights into quantifying calving activity. In this study, we present a new method for the detection of source location, timing, and magnitude of calving waves using a terrestrial radar interferometer. This method was applied to 11 500 1 min interval acquisitions from Eqip Sermia, West Greenland, in July 2018. Over 7 d, more than 2000 calving waves were detected, including waves generated by submarine calving, which are difficult to observe with other methods. Quantitative assessment with a wave power index (WPI) yields a higher wave activity ( +49 %) and higher temporally cumulated WPI ( +34 %) in deep water than under shallow conditions. Subglacial meltwater plumes, occurring 2.3 times more often in the deep sector, increase WPI and the number of waves by a factor of 1.8 and 1.3, respectively, in the deep and shallow sector. We therefore explain the higher calving activity in the deep sector by a combination of more frequent meltwater plumes and more efficient calving enhancement linked with better connections to warm deep ocean water. Article in Journal/Newspaper glacier Greenland Ice Sheet The Cryosphere Directory of Open Access Journals: DOAJ Articles Greenland Eqip Sermia ENVELOPE(-50.067,-50.067,69.817,69.817) The Cryosphere 15 12 5659 5674 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 A. Wehrlé M. P. Lüthi A. Walter G. Jouvet A. Vieli Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Glacier calving is a key dynamical process of the Greenland Ice Sheet and a major driver of its increasing mass loss. Calving waves, generated by the sudden detachment of ice from the glacier terminus, can reach tens of meters in height and provide very valuable insights into quantifying calving activity. In this study, we present a new method for the detection of source location, timing, and magnitude of calving waves using a terrestrial radar interferometer. This method was applied to 11 500 1 min interval acquisitions from Eqip Sermia, West Greenland, in July 2018. Over 7 d, more than 2000 calving waves were detected, including waves generated by submarine calving, which are difficult to observe with other methods. Quantitative assessment with a wave power index (WPI) yields a higher wave activity ( +49 %) and higher temporally cumulated WPI ( +34 %) in deep water than under shallow conditions. Subglacial meltwater plumes, occurring 2.3 times more often in the deep sector, increase WPI and the number of waves by a factor of 1.8 and 1.3, respectively, in the deep and shallow sector. We therefore explain the higher calving activity in the deep sector by a combination of more frequent meltwater plumes and more efficient calving enhancement linked with better connections to warm deep ocean water. |
format |
Article in Journal/Newspaper |
author |
A. Wehrlé M. P. Lüthi A. Walter G. Jouvet A. Vieli |
author_facet |
A. Wehrlé M. P. Lüthi A. Walter G. Jouvet A. Vieli |
author_sort |
A. Wehrlé |
title |
Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland |
title_short |
Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland |
title_full |
Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland |
title_fullStr |
Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland |
title_full_unstemmed |
Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland |
title_sort |
automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of eqip sermia, greenland |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-5659-2021 https://doaj.org/article/c086375134db413e8a54b134f9accc29 |
long_lat |
ENVELOPE(-50.067,-50.067,69.817,69.817) |
geographic |
Greenland Eqip Sermia |
geographic_facet |
Greenland Eqip Sermia |
genre |
glacier Greenland Ice Sheet The Cryosphere |
genre_facet |
glacier Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 5659-5674 (2021) |
op_relation |
https://tc.copernicus.org/articles/15/5659/2021/tc-15-5659-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-5659-2021 1994-0416 1994-0424 https://doaj.org/article/c086375134db413e8a54b134f9accc29 |
op_doi |
https://doi.org/10.5194/tc-15-5659-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
12 |
container_start_page |
5659 |
op_container_end_page |
5674 |
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1766009198917713920 |