A 3D glacier dynamics–line plume model to estimate the frontal ablation of Hansbreen, Svalbard
Frontal ablation is responsible for a large fraction of the mass loss from tidewater glaciers. The main contributors to frontal ablation are iceberg calving and submarine melting, with calving often being the largest. However, submarine melting, in addition to its direct contribution to mass loss, a...
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Copernicus Publications
2024
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00073161 2024-05-19T07:40:48+00:00 A 3D glacier dynamics–line plume model to estimate the frontal ablation of Hansbreen, Svalbard Muñoz-Hermosilla, José M. Otero, Jaime De Andrés, Eva Shahateet, Kaian Navarro, Francisco Pérez-Doña, Iván 2024-04 electronic https://doi.org/10.5194/tc-18-1911-2024 https://noa.gwlb.de/receive/cop_mods_00073161 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071345/tc-18-1911-2024.pdf https://tc.copernicus.org/articles/18/1911/2024/tc-18-1911-2024.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-18-1911-2024 https://noa.gwlb.de/receive/cop_mods_00073161 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071345/tc-18-1911-2024.pdf https://tc.copernicus.org/articles/18/1911/2024/tc-18-1911-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/tc-18-1911-2024 2024-04-29T23:46:10Z Frontal ablation is responsible for a large fraction of the mass loss from tidewater glaciers. The main contributors to frontal ablation are iceberg calving and submarine melting, with calving often being the largest. However, submarine melting, in addition to its direct contribution to mass loss, also promotes calving through the changes induced in the stress field at the glacier terminus, so both processes should be jointly analysed. Among the factors influencing submarine melting, the formation of a buoyant plume due to the emergence of fresh subglacial water at the glacier grounding line plays a key role. In this study we used Elmer/Ice to develop a 3D glacier dynamics model including calving and subglacial hydrology coupled with a line plume model to calculate the calving front position at every time step. We applied this model to the Hansbreen–Hansbukta glacier–fjord system in southern Spitsbergen, Svalbard, where a large set of data are available for both the glacier and the fjord from September 2008 to March 2011. We found that our 3D model reproduced the expected seasonal cycle of advance–retreat. Besides, the modelled front positions were in good agreement with the observed front positions at the central part of the calving front, with longitudinal differences, on average, below 15 m for the period from December 2009 to March 2011. But there were regions of the front, especially the eastern margin, that presented major differences. Article in Journal/Newspaper glacier Svalbard The Cryosphere Tidewater Spitsbergen Niedersächsisches Online-Archiv NOA The Cryosphere 18 4 1911 1924 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Muñoz-Hermosilla, José M. Otero, Jaime De Andrés, Eva Shahateet, Kaian Navarro, Francisco Pérez-Doña, Iván A 3D glacier dynamics–line plume model to estimate the frontal ablation of Hansbreen, Svalbard |
topic_facet |
article Verlagsveröffentlichung |
description |
Frontal ablation is responsible for a large fraction of the mass loss from tidewater glaciers. The main contributors to frontal ablation are iceberg calving and submarine melting, with calving often being the largest. However, submarine melting, in addition to its direct contribution to mass loss, also promotes calving through the changes induced in the stress field at the glacier terminus, so both processes should be jointly analysed. Among the factors influencing submarine melting, the formation of a buoyant plume due to the emergence of fresh subglacial water at the glacier grounding line plays a key role. In this study we used Elmer/Ice to develop a 3D glacier dynamics model including calving and subglacial hydrology coupled with a line plume model to calculate the calving front position at every time step. We applied this model to the Hansbreen–Hansbukta glacier–fjord system in southern Spitsbergen, Svalbard, where a large set of data are available for both the glacier and the fjord from September 2008 to March 2011. We found that our 3D model reproduced the expected seasonal cycle of advance–retreat. Besides, the modelled front positions were in good agreement with the observed front positions at the central part of the calving front, with longitudinal differences, on average, below 15 m for the period from December 2009 to March 2011. But there were regions of the front, especially the eastern margin, that presented major differences. |
format |
Article in Journal/Newspaper |
author |
Muñoz-Hermosilla, José M. Otero, Jaime De Andrés, Eva Shahateet, Kaian Navarro, Francisco Pérez-Doña, Iván |
author_facet |
Muñoz-Hermosilla, José M. Otero, Jaime De Andrés, Eva Shahateet, Kaian Navarro, Francisco Pérez-Doña, Iván |
author_sort |
Muñoz-Hermosilla, José M. |
title |
A 3D glacier dynamics–line plume model to estimate the frontal ablation of Hansbreen, Svalbard |
title_short |
A 3D glacier dynamics–line plume model to estimate the frontal ablation of Hansbreen, Svalbard |
title_full |
A 3D glacier dynamics–line plume model to estimate the frontal ablation of Hansbreen, Svalbard |
title_fullStr |
A 3D glacier dynamics–line plume model to estimate the frontal ablation of Hansbreen, Svalbard |
title_full_unstemmed |
A 3D glacier dynamics–line plume model to estimate the frontal ablation of Hansbreen, Svalbard |
title_sort |
3d glacier dynamics–line plume model to estimate the frontal ablation of hansbreen, svalbard |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/tc-18-1911-2024 https://noa.gwlb.de/receive/cop_mods_00073161 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071345/tc-18-1911-2024.pdf https://tc.copernicus.org/articles/18/1911/2024/tc-18-1911-2024.pdf |
genre |
glacier Svalbard The Cryosphere Tidewater Spitsbergen |
genre_facet |
glacier Svalbard The Cryosphere Tidewater Spitsbergen |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-18-1911-2024 https://noa.gwlb.de/receive/cop_mods_00073161 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071345/tc-18-1911-2024.pdf https://tc.copernicus.org/articles/18/1911/2024/tc-18-1911-2024.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-18-1911-2024 |
container_title |
The Cryosphere |
container_volume |
18 |
container_issue |
4 |
container_start_page |
1911 |
op_container_end_page |
1924 |
_version_ |
1799480382545985536 |