Topology and spatial-pressure-distribution reconstruction of an englacial channel
Abstract. 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 h...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications under license by EGU – European Geosciences Union GmbH
2022
|
Subjects: | |
Online Access: | http://hdl.handle.net/10852/99360 https://doi.org/10.5194/tc-16-3669-2022 |
id |
ftoslouniv:oai:www.duo.uio.no:10852/99360 |
---|---|
record_format |
openpolar |
spelling |
ftoslouniv:oai:www.duo.uio.no:10852/99360 2023-05-15T16:22:16+02:00 Topology and spatial-pressure-distribution reconstruction of an englacial channel ENEngelskEnglishTopology and spatial-pressure-distribution reconstruction of an englacial channel Piho, Laura Alexander, Andreas Kruusmaa, Maarja 2022-11-03T13:48:47Z http://hdl.handle.net/10852/99360 https://doi.org/10.5194/tc-16-3669-2022 EN eng Copernicus Publications under license by EGU – European Geosciences Union GmbH Piho, Laura Alexander, Andreas Kruusmaa, Maarja . Topology and spatial-pressure-distribution reconstruction of an englacial channel. The Cryosphere. 2022, 16(9), 3669-3683 http://hdl.handle.net/10852/99360 2068649 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The Cryosphere&rft.volume=16&rft.spage=3669&rft.date=2022 The Cryosphere 16 9 3669 3683 https://doi.org/10.5194/tc-16-3669-2022 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 1994-0416 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2022 ftoslouniv https://doi.org/10.5194/tc-16-3669-2022 2023-02-01T23:36:26Z Abstract. 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 Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Svalbard The Cryosphere 16 9 3669 3683 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Abstract. 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 |
spellingShingle |
Piho, Laura Alexander, Andreas Kruusmaa, Maarja Topology and spatial-pressure-distribution reconstruction of an englacial channel |
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 under license by EGU – European Geosciences Union GmbH |
publishDate |
2022 |
url |
http://hdl.handle.net/10852/99360 https://doi.org/10.5194/tc-16-3669-2022 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
glacier Ice Sheet Svalbard The Cryosphere |
genre_facet |
glacier Ice Sheet Svalbard The Cryosphere |
op_source |
1994-0416 |
op_relation |
Piho, Laura Alexander, Andreas Kruusmaa, Maarja . Topology and spatial-pressure-distribution reconstruction of an englacial channel. The Cryosphere. 2022, 16(9), 3669-3683 http://hdl.handle.net/10852/99360 2068649 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The Cryosphere&rft.volume=16&rft.spage=3669&rft.date=2022 The Cryosphere 16 9 3669 3683 https://doi.org/10.5194/tc-16-3669-2022 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
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 |
_version_ |
1766010233243566080 |