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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ftunivzuerich:oai:www.zora.uzh.ch:210610 2024-06-23T07:53:01+00:00 Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland Wehrlé, Adrien Lüthi, Martin P Walter, Andrea Jouvet, Guillaume Vieli, Andreas 2021-12-13 application/pdf https://www.zora.uzh.ch/id/eprint/210610/ https://www.zora.uzh.ch/id/eprint/210610/1/2021_Vieli_tc-15-5659-2021.pdf https://doi.org/10.5167/uzh-210610 https://doi.org/10.5194/tc-15-5659-2021 eng eng Copernicus Publications https://www.zora.uzh.ch/id/eprint/210610/1/2021_Vieli_tc-15-5659-2021.pdf doi:10.5167/uzh-210610 doi:10.5194/tc-15-5659-2021 urn:issn:1994-0416 info:eu-repo/semantics/openAccess Creative Commons: Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/ Wehrlé, Adrien; Lüthi, Martin P; Walter, Andrea; Jouvet, Guillaume; Vieli, Andreas (2021). Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland. The Cryosphere, 15(12):5659-5674. Institute of Geography 910 Geography & travel Earth-Surface Processes Water Science and Technology Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftunivzuerich https://doi.org/10.5167/uzh-21061010.5194/tc-15-5659-2021 2024-05-29T01:11:41Z 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 University of Zurich (UZH): ZORA (Zurich Open Repository and Archive Eqip Sermia ENVELOPE(-50.067,-50.067,69.817,69.817) Greenland |
institution |
Open Polar |
collection |
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
op_collection_id |
ftunivzuerich |
language |
English |
topic |
Institute of Geography 910 Geography & travel Earth-Surface Processes Water Science and Technology |
spellingShingle |
Institute of Geography 910 Geography & travel Earth-Surface Processes Water Science and Technology Wehrlé, Adrien Lüthi, Martin P Walter, Andrea Jouvet, Guillaume Vieli, Andreas Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland |
topic_facet |
Institute of Geography 910 Geography & travel Earth-Surface Processes Water Science and Technology |
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 |
Wehrlé, Adrien Lüthi, Martin P Walter, Andrea Jouvet, Guillaume Vieli, Andreas |
author_facet |
Wehrlé, Adrien Lüthi, Martin P Walter, Andrea Jouvet, Guillaume Vieli, Andreas |
author_sort |
Wehrlé, Adrien |
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://www.zora.uzh.ch/id/eprint/210610/ https://www.zora.uzh.ch/id/eprint/210610/1/2021_Vieli_tc-15-5659-2021.pdf https://doi.org/10.5167/uzh-210610 https://doi.org/10.5194/tc-15-5659-2021 |
long_lat |
ENVELOPE(-50.067,-50.067,69.817,69.817) |
geographic |
Eqip Sermia Greenland |
geographic_facet |
Eqip Sermia Greenland |
genre |
glacier Greenland Ice Sheet The Cryosphere |
genre_facet |
glacier Greenland Ice Sheet The Cryosphere |
op_source |
Wehrlé, Adrien; Lüthi, Martin P; Walter, Andrea; Jouvet, Guillaume; Vieli, Andreas (2021). Automated detection and analysis of surface calving waves with a terrestrial radar interferometer at the front of Eqip Sermia, Greenland. The Cryosphere, 15(12):5659-5674. |
op_relation |
https://www.zora.uzh.ch/id/eprint/210610/1/2021_Vieli_tc-15-5659-2021.pdf doi:10.5167/uzh-210610 doi:10.5194/tc-15-5659-2021 urn:issn:1994-0416 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons: Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5167/uzh-21061010.5194/tc-15-5659-2021 |
_version_ |
1802644490710679552 |