Topology and spatial-pressure-distribution reconstruction of an englacial channel
Information about glacier hydrology is important for understanding glacier and ice sheet dynamics. However, our knowledge about water pathways and pressure remains limited, as in situ observations are sparse and methods for direct area-wide observations are limited due to the extreme and hard-to-acc...
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Copernicus Publications
2022
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00062645 2023-05-15T16:22:16+02:00 Topology and spatial-pressure-distribution reconstruction of an englacial channel Piho, Laura Alexander, Andreas Kruusmaa, Maarja 2022-09 electronic https://doi.org/10.5194/tc-16-3669-2022 https://noa.gwlb.de/receive/cop_mods_00062645 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061867/tc-16-3669-2022.pdf https://tc.copernicus.org/articles/16/3669/2022/tc-16-3669-2022.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-16-3669-2022 https://noa.gwlb.de/receive/cop_mods_00062645 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061867/tc-16-3669-2022.pdf https://tc.copernicus.org/articles/16/3669/2022/tc-16-3669-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/tc-16-3669-2022 2022-09-18T23:11:52Z Information about glacier hydrology is important for understanding glacier and ice sheet dynamics. However, our knowledge about water pathways and pressure remains limited, as in situ observations are sparse and methods for direct area-wide observations are limited due to the extreme and hard-to-access nature of the environment. In this paper, we present a method that allows for in situ data collection in englacial channels using sensing drifters. Furthermore, we demonstrate a model that takes the collected data and reconstructs the planar subsurface water flow paths providing spatial reference to the continuous water pressure measurements. We showcase this method by reconstructing the 2D topology and the water pressure distribution of a free-flowing englacial channel in Austre Brøggerbreen (Svalbard). The approach uses inertial measurements from submersible sensing drifters and reconstructs the water flow path between given start and end coordinates. Validation of the method was done on a separate supraglacial channel, showing an average error of 3.9 m and the total channel length error of 29 m (6.5 %). At the englacial channel, the average error is 12.1 m; the length error is 107 m (11.6 %); and the water pressure standard deviation is 3.4 hPa (0.3 %). Our method allows for mapping of subsurface water flow paths and spatially referencing the pressure distribution within. Further, our method would be extendable to the reconstruction of other, previously underexplored subsurface fluid flow paths such as pipelines or karst caves. Article in Journal/Newspaper glacier Ice Sheet Svalbard The Cryosphere Niedersächsisches Online-Archiv NOA Svalbard The Cryosphere 16 9 3669 3683 |
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Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Piho, Laura Alexander, Andreas Kruusmaa, Maarja Topology and spatial-pressure-distribution reconstruction of an englacial channel |
topic_facet |
article Verlagsveröffentlichung |
description |
Information about glacier hydrology is important for understanding glacier and ice sheet dynamics. However, our knowledge about water pathways and pressure remains limited, as in situ observations are sparse and methods for direct area-wide observations are limited due to the extreme and hard-to-access nature of the environment. In this paper, we present a method that allows for in situ data collection in englacial channels using sensing drifters. Furthermore, we demonstrate a model that takes the collected data and reconstructs the planar subsurface water flow paths providing spatial reference to the continuous water pressure measurements. We showcase this method by reconstructing the 2D topology and the water pressure distribution of a free-flowing englacial channel in Austre Brøggerbreen (Svalbard). The approach uses inertial measurements from submersible sensing drifters and reconstructs the water flow path between given start and end coordinates. Validation of the method was done on a separate supraglacial channel, showing an average error of 3.9 m and the total channel length error of 29 m (6.5 %). At the englacial channel, the average error is 12.1 m; the length error is 107 m (11.6 %); and the water pressure standard deviation is 3.4 hPa (0.3 %). Our method allows for mapping of subsurface water flow paths and spatially referencing the pressure distribution within. Further, our method would be extendable to the reconstruction of other, previously underexplored subsurface fluid flow paths such as pipelines or karst caves. |
format |
Article in Journal/Newspaper |
author |
Piho, Laura Alexander, Andreas Kruusmaa, Maarja |
author_facet |
Piho, Laura Alexander, Andreas Kruusmaa, Maarja |
author_sort |
Piho, Laura |
title |
Topology and spatial-pressure-distribution reconstruction of an englacial channel |
title_short |
Topology and spatial-pressure-distribution reconstruction of an englacial channel |
title_full |
Topology and spatial-pressure-distribution reconstruction of an englacial channel |
title_fullStr |
Topology and spatial-pressure-distribution reconstruction of an englacial channel |
title_full_unstemmed |
Topology and spatial-pressure-distribution reconstruction of an englacial channel |
title_sort |
topology and spatial-pressure-distribution reconstruction of an englacial channel |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/tc-16-3669-2022 https://noa.gwlb.de/receive/cop_mods_00062645 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061867/tc-16-3669-2022.pdf https://tc.copernicus.org/articles/16/3669/2022/tc-16-3669-2022.pdf |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
glacier Ice Sheet Svalbard The Cryosphere |
genre_facet |
glacier Ice Sheet Svalbard The Cryosphere |
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-16-3669-2022 https://noa.gwlb.de/receive/cop_mods_00062645 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061867/tc-16-3669-2022.pdf https://tc.copernicus.org/articles/16/3669/2022/tc-16-3669-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-16-3669-2022 |
container_title |
The Cryosphere |
container_volume |
16 |
container_issue |
9 |
container_start_page |
3669 |
op_container_end_page |
3683 |
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1766010233454329856 |