A high-resolution synthetic bed elevation grid of the Antarctic continent
Digital elevation models of Antarctic bed topography are smoothed and interpolated onto low-resolution ( > 1 km) grids as current observed topography data are generally sparsely and unevenly sampled. This issue has potential implications for numerical simulations of ice-sheet dynamics, especially...
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Online Access: | https://doi.org/10.5194/essd-9-267-2017 http://ecite.utas.edu.au/116815 |
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ftunivtasecite:oai:ecite.utas.edu.au:116815 2023-05-15T13:49:03+02:00 A high-resolution synthetic bed elevation grid of the Antarctic continent Graham, FS Roberts, JL Galton-Fenzi, BK Young, D Blankenship, D Siegert, MJ 2017 application/pdf https://doi.org/10.5194/essd-9-267-2017 http://ecite.utas.edu.au/116815 en eng Copernicus GmbH http://ecite.utas.edu.au/116815/1/essd-9-267-2017.pdf http://dx.doi.org/10.5194/essd-9-267-2017 Graham, FS and Roberts, JL and Galton-Fenzi, BK and Young, D and Blankenship, D and Siegert, MJ, A high-resolution synthetic bed elevation grid of the Antarctic continent, Earth System Science Data, 9 pp. 267-279. ISSN 1866-3508 (2017) [Refereed Article] http://ecite.utas.edu.au/116815 Engineering Interdisciplinary Engineering Computational Fluid Dynamics Refereed Article PeerReviewed 2017 ftunivtasecite https://doi.org/10.5194/essd-9-267-2017 2019-12-13T22:16:18Z Digital elevation models of Antarctic bed topography are smoothed and interpolated onto low-resolution ( > 1 km) grids as current observed topography data are generally sparsely and unevenly sampled. This issue has potential implications for numerical simulations of ice-sheet dynamics, especially in regions prone to instability where detailed knowledge of the topography, including fine-scale roughness, is required. Here, we present a high-resolution (100 m) synthetic bed elevation terrain for Antarctica, encompassing the continent, continental shelf, and seas south of 60 S. Although not identically matching observations, the synthetic bed surface denoted as HRES preserves topographic roughness characteristics of airborne and ground-based ice-penetrating radar data measured by the ICECAP (Investigating the Cryospheric Evolution of the Central Antarctic Plate) consortium or used to create the Bedmap1 compilation. Broad-scale ( > 5 km resolution) features of the Antarctic landscape are incorporated using a low-pass filter of the Bedmap2 bed elevation data. HRES has applicability in high-resolution ice-sheet modelling studies, including investigations of the interaction between topography, ice-sheet dynamics, and hydrology, where processes are highly sensitive to bed elevations and fine-scale roughness. The data are available for download from the Australian Antarctic Data Centre ( doi:10.4225/15/57464ADE22F50 ). Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet eCite UTAS (University of Tasmania) Antarctic The Antarctic Earth System Science Data 9 1 267 279 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Engineering Interdisciplinary Engineering Computational Fluid Dynamics |
spellingShingle |
Engineering Interdisciplinary Engineering Computational Fluid Dynamics Graham, FS Roberts, JL Galton-Fenzi, BK Young, D Blankenship, D Siegert, MJ A high-resolution synthetic bed elevation grid of the Antarctic continent |
topic_facet |
Engineering Interdisciplinary Engineering Computational Fluid Dynamics |
description |
Digital elevation models of Antarctic bed topography are smoothed and interpolated onto low-resolution ( > 1 km) grids as current observed topography data are generally sparsely and unevenly sampled. This issue has potential implications for numerical simulations of ice-sheet dynamics, especially in regions prone to instability where detailed knowledge of the topography, including fine-scale roughness, is required. Here, we present a high-resolution (100 m) synthetic bed elevation terrain for Antarctica, encompassing the continent, continental shelf, and seas south of 60 S. Although not identically matching observations, the synthetic bed surface denoted as HRES preserves topographic roughness characteristics of airborne and ground-based ice-penetrating radar data measured by the ICECAP (Investigating the Cryospheric Evolution of the Central Antarctic Plate) consortium or used to create the Bedmap1 compilation. Broad-scale ( > 5 km resolution) features of the Antarctic landscape are incorporated using a low-pass filter of the Bedmap2 bed elevation data. HRES has applicability in high-resolution ice-sheet modelling studies, including investigations of the interaction between topography, ice-sheet dynamics, and hydrology, where processes are highly sensitive to bed elevations and fine-scale roughness. The data are available for download from the Australian Antarctic Data Centre ( doi:10.4225/15/57464ADE22F50 ). |
format |
Article in Journal/Newspaper |
author |
Graham, FS Roberts, JL Galton-Fenzi, BK Young, D Blankenship, D Siegert, MJ |
author_facet |
Graham, FS Roberts, JL Galton-Fenzi, BK Young, D Blankenship, D Siegert, MJ |
author_sort |
Graham, FS |
title |
A high-resolution synthetic bed elevation grid of the Antarctic continent |
title_short |
A high-resolution synthetic bed elevation grid of the Antarctic continent |
title_full |
A high-resolution synthetic bed elevation grid of the Antarctic continent |
title_fullStr |
A high-resolution synthetic bed elevation grid of the Antarctic continent |
title_full_unstemmed |
A high-resolution synthetic bed elevation grid of the Antarctic continent |
title_sort |
high-resolution synthetic bed elevation grid of the antarctic continent |
publisher |
Copernicus GmbH |
publishDate |
2017 |
url |
https://doi.org/10.5194/essd-9-267-2017 http://ecite.utas.edu.au/116815 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_relation |
http://ecite.utas.edu.au/116815/1/essd-9-267-2017.pdf http://dx.doi.org/10.5194/essd-9-267-2017 Graham, FS and Roberts, JL and Galton-Fenzi, BK and Young, D and Blankenship, D and Siegert, MJ, A high-resolution synthetic bed elevation grid of the Antarctic continent, Earth System Science Data, 9 pp. 267-279. ISSN 1866-3508 (2017) [Refereed Article] http://ecite.utas.edu.au/116815 |
op_doi |
https://doi.org/10.5194/essd-9-267-2017 |
container_title |
Earth System Science Data |
container_volume |
9 |
container_issue |
1 |
container_start_page |
267 |
op_container_end_page |
279 |
_version_ |
1766250703252094976 |