Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme
Ice thickness data over much of East Antarctica are sparse and irregularly distributed. This poses difficulties for reconstructing the homogeneous coverage needed to properly assess underlying sub-glacial morphology and fundamental geometric constraints on sea level rise. Here we introduce a new phy...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2011
|
Subjects: | |
Online Access: | http://hdl.handle.net/11590/353579 https://doi.org/10.5194/tc-5-551-2011 |
id |
ftunivroma3iris:oai:iris.uniroma3.it:11590/353579 |
---|---|
record_format |
openpolar |
spelling |
ftunivroma3iris:oai:iris.uniroma3.it:11590/353579 2024-02-27T08:33:46+00:00 Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme Roberts J. L. Warner R. C. Young D. Wright A. Van Ommen T. D. Blankenship D. D. Siegert M. Young N. W. Tabacco I. E. Forieri A. Passerini A. Zirizzotti A. Frezzotti M. Roberts, J. L. Warner, R. C. Young, D. Wright, A. Van Ommen, T. D. Blankenship, D. D. Siegert, M. Young, N. W. Tabacco, I. E. Forieri, A. Passerini, A. Zirizzotti, A. Frezzotti, M. 2011 http://hdl.handle.net/11590/353579 https://doi.org/10.5194/tc-5-551-2011 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000295377900003 volume:5 issue:3 firstpage:551 lastpage:560 numberofpages:10 journal:THE CRYOSPHERE http://hdl.handle.net/11590/353579 doi:10.5194/tc-5-551-2011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79960371280 info:eu-repo/semantics/article 2011 ftunivroma3iris https://doi.org/10.5194/tc-5-551-2011 2024-01-31T17:41:11Z Ice thickness data over much of East Antarctica are sparse and irregularly distributed. This poses difficulties for reconstructing the homogeneous coverage needed to properly assess underlying sub-glacial morphology and fundamental geometric constraints on sea level rise. Here we introduce a new physically-based ice thickness interpolation scheme and apply this to existing ice thickness data in the Aurora Subglacial Basin region. The skill and robustness of the new reconstruction is demonstrated by comparison with new data from the ICECAP project. The interpolated morphology shows an extensive marine-based ice sheet, with considerably more area below sea-level than shown by prior studies. It also shows deep features connecting the coastal grounding zone with the deepest regions in the interior. This has implications for ice sheet response to a warming ocean and underscores the importance of obtaining additional high resolution data in these marginal zones for modelling ice sheet evolution. © Author(s) 2011. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Ice Sheet Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) East Antarctica The Cryosphere 5 3 551 560 |
institution |
Open Polar |
collection |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
language |
English |
description |
Ice thickness data over much of East Antarctica are sparse and irregularly distributed. This poses difficulties for reconstructing the homogeneous coverage needed to properly assess underlying sub-glacial morphology and fundamental geometric constraints on sea level rise. Here we introduce a new physically-based ice thickness interpolation scheme and apply this to existing ice thickness data in the Aurora Subglacial Basin region. The skill and robustness of the new reconstruction is demonstrated by comparison with new data from the ICECAP project. The interpolated morphology shows an extensive marine-based ice sheet, with considerably more area below sea-level than shown by prior studies. It also shows deep features connecting the coastal grounding zone with the deepest regions in the interior. This has implications for ice sheet response to a warming ocean and underscores the importance of obtaining additional high resolution data in these marginal zones for modelling ice sheet evolution. © Author(s) 2011. |
author2 |
Roberts, J. L. Warner, R. C. Young, D. Wright, A. Van Ommen, T. D. Blankenship, D. D. Siegert, M. Young, N. W. Tabacco, I. E. Forieri, A. Passerini, A. Zirizzotti, A. Frezzotti, M. |
format |
Article in Journal/Newspaper |
author |
Roberts J. L. Warner R. C. Young D. Wright A. Van Ommen T. D. Blankenship D. D. Siegert M. Young N. W. Tabacco I. E. Forieri A. Passerini A. Zirizzotti A. Frezzotti M. |
spellingShingle |
Roberts J. L. Warner R. C. Young D. Wright A. Van Ommen T. D. Blankenship D. D. Siegert M. Young N. W. Tabacco I. E. Forieri A. Passerini A. Zirizzotti A. Frezzotti M. Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme |
author_facet |
Roberts J. L. Warner R. C. Young D. Wright A. Van Ommen T. D. Blankenship D. D. Siegert M. Young N. W. Tabacco I. E. Forieri A. Passerini A. Zirizzotti A. Frezzotti M. |
author_sort |
Roberts J. L. |
title |
Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme |
title_short |
Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme |
title_full |
Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme |
title_fullStr |
Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme |
title_full_unstemmed |
Refined broad-scale sub-glacial morphology of Aurora Subglacial Basin, East Antarctica derived by an ice-dynamics-based interpolation scheme |
title_sort |
refined broad-scale sub-glacial morphology of aurora subglacial basin, east antarctica derived by an ice-dynamics-based interpolation scheme |
publishDate |
2011 |
url |
http://hdl.handle.net/11590/353579 https://doi.org/10.5194/tc-5-551-2011 |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctica East Antarctica Ice Sheet |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000295377900003 volume:5 issue:3 firstpage:551 lastpage:560 numberofpages:10 journal:THE CRYOSPHERE http://hdl.handle.net/11590/353579 doi:10.5194/tc-5-551-2011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79960371280 |
op_doi |
https://doi.org/10.5194/tc-5-551-2011 |
container_title |
The Cryosphere |
container_volume |
5 |
container_issue |
3 |
container_start_page |
551 |
op_container_end_page |
560 |
_version_ |
1792047675625963520 |