Brief communication: Estimating the ice thickness of the Müller Ice Cap using an inversion of the shallow ice approximation

The Müller Ice Cap will soon set the scene for a new drilling project. Therefore, ice thickness estimates are necessary for planning since thickness measurements of the ice cap are sparse. Here, two models are presented and compared, i) a simple inversion of the shallow ice approximation (SIA invers...

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Main Authors: Zinck, Ann-Sofie Priergaard, Grinsted, Aslak
Format: Text
Language:English
Published: 2021
Subjects:
Müller Ice Cap
Ice cap
Ice Sheet
Online Access:https://doi.org/10.5194/tc-2021-300
https://tc.copernicus.org/preprints/tc-2021-300/
id ftcopernicus:oai:publications.copernicus.org:tcd97901
record_format openpolar
spelling ftcopernicus:oai:publications.copernicus.org:tcd97901 2023-05-15T16:38:03+02:00 Brief communication: Estimating the ice thickness of the Müller Ice Cap using an inversion of the shallow ice approximation Zinck, Ann-Sofie Priergaard Grinsted, Aslak 2021-09-21 application/pdf https://doi.org/10.5194/tc-2021-300 https://tc.copernicus.org/preprints/tc-2021-300/ eng eng doi:10.5194/tc-2021-300 https://tc.copernicus.org/preprints/tc-2021-300/ eISSN: 1994-0424 Text 2021 ftcopernicus https://doi.org/10.5194/tc-2021-300 2021-09-27T16:22:26Z The Müller Ice Cap will soon set the scene for a new drilling project. Therefore, ice thickness estimates are necessary for planning since thickness measurements of the ice cap are sparse. Here, two models are presented and compared, i) a simple inversion of the shallow ice approximation (SIA inversion) by the use of a single radar line in combination with the glacier outline, surface slope, and elevation, and ii) an iterative inverse method using the Parallel Ice Sheet Model (PISM). The two methods mostly agree about a good drill site candidate. However, the new semi-empirical SIA inversion is insensitive to mass balance, computationally fast, and provides better fits. Text Ice cap Ice Sheet Copernicus Publications: E-Journals Müller Ice Cap ENVELOPE(-91.501,-91.501,79.785,79.785)
institution Open Polar
collection Copernicus Publications: E-Journals
op_collection_id ftcopernicus
language English
description The Müller Ice Cap will soon set the scene for a new drilling project. Therefore, ice thickness estimates are necessary for planning since thickness measurements of the ice cap are sparse. Here, two models are presented and compared, i) a simple inversion of the shallow ice approximation (SIA inversion) by the use of a single radar line in combination with the glacier outline, surface slope, and elevation, and ii) an iterative inverse method using the Parallel Ice Sheet Model (PISM). The two methods mostly agree about a good drill site candidate. However, the new semi-empirical SIA inversion is insensitive to mass balance, computationally fast, and provides better fits.
format Text
author Zinck, Ann-Sofie Priergaard
Grinsted, Aslak
spellingShingle Zinck, Ann-Sofie Priergaard
Grinsted, Aslak
Brief communication: Estimating the ice thickness of the Müller Ice Cap using an inversion of the shallow ice approximation
author_facet Zinck, Ann-Sofie Priergaard
Grinsted, Aslak
author_sort Zinck, Ann-Sofie Priergaard
title Brief communication: Estimating the ice thickness of the Müller Ice Cap using an inversion of the shallow ice approximation
title_short Brief communication: Estimating the ice thickness of the Müller Ice Cap using an inversion of the shallow ice approximation
title_full Brief communication: Estimating the ice thickness of the Müller Ice Cap using an inversion of the shallow ice approximation
title_fullStr Brief communication: Estimating the ice thickness of the Müller Ice Cap using an inversion of the shallow ice approximation
title_full_unstemmed Brief communication: Estimating the ice thickness of the Müller Ice Cap using an inversion of the shallow ice approximation
title_sort brief communication: estimating the ice thickness of the müller ice cap using an inversion of the shallow ice approximation
publishDate 2021
url https://doi.org/10.5194/tc-2021-300
https://tc.copernicus.org/preprints/tc-2021-300/
long_lat ENVELOPE(-91.501,-91.501,79.785,79.785)
geographic Müller Ice Cap
geographic_facet Müller Ice Cap
genre Ice cap
Ice Sheet
genre_facet Ice cap
Ice Sheet
op_source eISSN: 1994-0424
op_relation doi:10.5194/tc-2021-300
https://tc.copernicus.org/preprints/tc-2021-300/
op_doi https://doi.org/10.5194/tc-2021-300
_version_ 1766028350434836480

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