Application of a two-step approach for mapping ice thickness to various glacier types on Svalbard ...
The basal topography is largely unknown beneath most glaciers and ice caps, and many attempts have been made to estimate a thickness field from other more accessible information at the surface. Here, we present a two-step reconstruction approach for ice thickness that solves mass conservation over s...
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ftdatacite:10.17863/cam.13420 2024-02-27T08:40:47+00:00 Application of a two-step approach for mapping ice thickness to various glacier types on Svalbard ... Fürst, JJ Gillet-Chaulet, F Benham, TJ Dowdeswell, JA Grabiec, M Navarro, F Pettersson, R Moholdt, G Nuth, C Sass, B Aas, K Fettweis, X Lang, C Seehaus, T Braun, M 2017 https://dx.doi.org/10.17863/cam.13420 https://www.repository.cam.ac.uk/handle/1810/267464 en eng Copernicus Publications open.access Creative Commons Attribution 4.0 International Creative Commons Attribution 4.0 International Creative Commons Attribution 4.0 International Attribution 4.0 International Attribution 4.0 International Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 http://purl.org/coar/access_right/c_abf2 37 Earth Sciences 3709 Physical Geography and Environmental Geoscience article-journal ScholarlyArticle JournalArticle Article 2017 ftdatacite https://doi.org/10.17863/cam.13420 2024-02-01T14:57:25Z The basal topography is largely unknown beneath most glaciers and ice caps, and many attempts have been made to estimate a thickness field from other more accessible information at the surface. Here, we present a two-step reconstruction approach for ice thickness that solves mass conservation over single or several connected drainage basins. The approach is applied to a variety of test geometries with abundant thickness measurements including marine- and land-terminating glaciers as well as a 2400-km2 ice cap on Svalbard. The input requirements are kept to a minimum for the first step. In this step, a geometrically controlled, non-local flux solution is converted into thickness values relying on the shallow ice approximation (SIA). In a second step, the thickness field is updated along fast-flowing glacier trunks on the basis of velocity observations. Both steps account for available thickness measurements. Each thickness field is presented together with an error-estimate map based on a formal propagation of ... Article in Journal/Newspaper glacier Ice cap Svalbard DataCite Metadata Store (German National Library of Science and Technology) Svalbard |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
37 Earth Sciences 3709 Physical Geography and Environmental Geoscience |
spellingShingle |
37 Earth Sciences 3709 Physical Geography and Environmental Geoscience Fürst, JJ Gillet-Chaulet, F Benham, TJ Dowdeswell, JA Grabiec, M Navarro, F Pettersson, R Moholdt, G Nuth, C Sass, B Aas, K Fettweis, X Lang, C Seehaus, T Braun, M Application of a two-step approach for mapping ice thickness to various glacier types on Svalbard ... |
topic_facet |
37 Earth Sciences 3709 Physical Geography and Environmental Geoscience |
description |
The basal topography is largely unknown beneath most glaciers and ice caps, and many attempts have been made to estimate a thickness field from other more accessible information at the surface. Here, we present a two-step reconstruction approach for ice thickness that solves mass conservation over single or several connected drainage basins. The approach is applied to a variety of test geometries with abundant thickness measurements including marine- and land-terminating glaciers as well as a 2400-km2 ice cap on Svalbard. The input requirements are kept to a minimum for the first step. In this step, a geometrically controlled, non-local flux solution is converted into thickness values relying on the shallow ice approximation (SIA). In a second step, the thickness field is updated along fast-flowing glacier trunks on the basis of velocity observations. Both steps account for available thickness measurements. Each thickness field is presented together with an error-estimate map based on a formal propagation of ... |
format |
Article in Journal/Newspaper |
author |
Fürst, JJ Gillet-Chaulet, F Benham, TJ Dowdeswell, JA Grabiec, M Navarro, F Pettersson, R Moholdt, G Nuth, C Sass, B Aas, K Fettweis, X Lang, C Seehaus, T Braun, M |
author_facet |
Fürst, JJ Gillet-Chaulet, F Benham, TJ Dowdeswell, JA Grabiec, M Navarro, F Pettersson, R Moholdt, G Nuth, C Sass, B Aas, K Fettweis, X Lang, C Seehaus, T Braun, M |
author_sort |
Fürst, JJ |
title |
Application of a two-step approach for mapping ice thickness to various glacier types on Svalbard ... |
title_short |
Application of a two-step approach for mapping ice thickness to various glacier types on Svalbard ... |
title_full |
Application of a two-step approach for mapping ice thickness to various glacier types on Svalbard ... |
title_fullStr |
Application of a two-step approach for mapping ice thickness to various glacier types on Svalbard ... |
title_full_unstemmed |
Application of a two-step approach for mapping ice thickness to various glacier types on Svalbard ... |
title_sort |
application of a two-step approach for mapping ice thickness to various glacier types on svalbard ... |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://dx.doi.org/10.17863/cam.13420 https://www.repository.cam.ac.uk/handle/1810/267464 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
glacier Ice cap Svalbard |
genre_facet |
glacier Ice cap Svalbard |
op_rights |
open.access Creative Commons Attribution 4.0 International Creative Commons Attribution 4.0 International Creative Commons Attribution 4.0 International Attribution 4.0 International Attribution 4.0 International Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.17863/cam.13420 |
_version_ |
1792047924102823936 |