Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica
We present Bedmap2, a new suite of gridded products describing surface elevation, ice-thickness and the seafloor and subglacial bed elevation of the Antarctic south of 60 S. We derived these products using data from a variety of sources, including many substantial surveys completed since the origina...
Published in: | The Cryosphere |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://doi.org/10.5194/tc-7-375-2013 http://ecite.utas.edu.au/86346 |
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ftunivtasecite:oai:ecite.utas.edu.au:86346 2023-05-15T13:37:23+02:00 Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica Fretwell, P Pritchard, HD Vaughan, DG Bamber, JL Barrand, NE Bell, R Bianchi, C Bingham, RG Blankenship, DD Casassa, G Catania, G Callens, D Conway, H Cook, AJ Corr, HFJ Damaske, D Damm, V Ferraccioli, F Forsberg, R Fujita, S Gim, Y Gogineni, P Griggs, JA Hindmarsh, RCA Holmlund, P Holt, JW Jacobel, RW Jenkins, A Jokat, W Jordan, T King, EC Kohler, J Krabill, W Riger-Kusk, M Langley, KA Leitchenkov, G Leuschen, C Luyendyk, BP Matsuoka, K Mouginot, J Nitsche, FO Nogi, Y Nost, OA Popov, SV Rignot, E Rippin, DM Rivera, A Roberts, Jason Ross, N Siegert, MJ Smith, AM Steinhage, D Studinger, M Sun, B Tinto, BK Welch, BC Wilson, D Young, DA Xiangbin, C Zirizzotti, A 2013 application/pdf https://doi.org/10.5194/tc-7-375-2013 http://ecite.utas.edu.au/86346 en eng Copernicus GmbH http://ecite.utas.edu.au/86346/2/Fretwell_2013_Bedmap2.pdf http://dx.doi.org/10.5194/tc-7-375-2013 Fretwell, P and Pritchard, HD and Vaughan, DG and Bamber, JL and Barrand, NE and Bell, R and Bianchi, C and Bingham, RG and Blankenship, DD and Casassa, G and Catania, G and Callens, D and Conway, H and Cook, AJ and Corr, HFJ and Damaske, D and Damm, V and Ferraccioli, F and Forsberg, R and Fujita, S and Gim, Y and Gogineni, P and Griggs, JA and Hindmarsh, RCA and Holmlund, P and Holt, JW and Jacobel, RW and Jenkins, A and Jokat, W and Jordan, T and King, EC and Kohler, J and Krabill, W and Riger-Kusk, M and Langley, KA and Leitchenkov, G and Leuschen, C and Luyendyk, BP and Matsuoka, K and Mouginot, J and Nitsche, FO and Nogi, Y and Nost, OA and Popov, SV and Rignot, E and Rippin, DM and Rivera, A and Roberts, Jason and Ross, N and Siegert, MJ and Smith, AM and Steinhage, D and Studinger, M and Sun, B and Tinto, BK and Welch, BC and Wilson, D and Young, DA and Xiangbin, C and Zirizzotti, A, Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica, The Cryosphere, 7, (1) pp. 375-393. ISSN 1994-0416 (2013) [Refereed Article] http://ecite.utas.edu.au/86346 Earth Sciences Physical Geography and Environmental Geoscience Glaciology Refereed Article PeerReviewed 2013 ftunivtasecite https://doi.org/10.5194/tc-7-375-2013 2019-12-13T21:50:27Z We present Bedmap2, a new suite of gridded products describing surface elevation, ice-thickness and the seafloor and subglacial bed elevation of the Antarctic south of 60 S. We derived these products using data from a variety of sources, including many substantial surveys completed since the original Bedmap compilation (Bedmap1) in 2001. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used in Bedmap1. In most parts of Antarctica the subglacial landscape is visible in much greater detail than was previously available and the improved data-coverage has in many areas revealed the full scale of mountain ranges, valleys, basins and troughs, only fragments of which were previously indicated in local surveys. The derived statistics for Bedmap2 show that the volume of ice contained in the Antarctic ice sheet (27 million km3) and its potential contribution to sea-level rise (58 m) are similar to those of Bedmap1, but the mean thickness of the ice sheet is 4.6% greater, the mean depth of the bed beneath the grounded ice sheet is 72 m lower and the area of ice sheet grounded on bed below sea level is increased by 10%. The Bedmap2 compilation highlights several areas beneath the ice sheet where the bed elevation is substantially lower than the deepest bed indicated by Bedmap1. These products, along with grids of data coverage and uncertainty, provide new opportunities for detailed modelling of the past and future evolution of the Antarctic ice sheets. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet The Cryosphere eCite UTAS (University of Tasmania) Antarctic The Antarctic The Cryosphere 7 1 375 393 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Physical Geography and Environmental Geoscience Glaciology |
spellingShingle |
Earth Sciences Physical Geography and Environmental Geoscience Glaciology Fretwell, P Pritchard, HD Vaughan, DG Bamber, JL Barrand, NE Bell, R Bianchi, C Bingham, RG Blankenship, DD Casassa, G Catania, G Callens, D Conway, H Cook, AJ Corr, HFJ Damaske, D Damm, V Ferraccioli, F Forsberg, R Fujita, S Gim, Y Gogineni, P Griggs, JA Hindmarsh, RCA Holmlund, P Holt, JW Jacobel, RW Jenkins, A Jokat, W Jordan, T King, EC Kohler, J Krabill, W Riger-Kusk, M Langley, KA Leitchenkov, G Leuschen, C Luyendyk, BP Matsuoka, K Mouginot, J Nitsche, FO Nogi, Y Nost, OA Popov, SV Rignot, E Rippin, DM Rivera, A Roberts, Jason Ross, N Siegert, MJ Smith, AM Steinhage, D Studinger, M Sun, B Tinto, BK Welch, BC Wilson, D Young, DA Xiangbin, C Zirizzotti, A Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica |
topic_facet |
Earth Sciences Physical Geography and Environmental Geoscience Glaciology |
description |
We present Bedmap2, a new suite of gridded products describing surface elevation, ice-thickness and the seafloor and subglacial bed elevation of the Antarctic south of 60 S. We derived these products using data from a variety of sources, including many substantial surveys completed since the original Bedmap compilation (Bedmap1) in 2001. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used in Bedmap1. In most parts of Antarctica the subglacial landscape is visible in much greater detail than was previously available and the improved data-coverage has in many areas revealed the full scale of mountain ranges, valleys, basins and troughs, only fragments of which were previously indicated in local surveys. The derived statistics for Bedmap2 show that the volume of ice contained in the Antarctic ice sheet (27 million km3) and its potential contribution to sea-level rise (58 m) are similar to those of Bedmap1, but the mean thickness of the ice sheet is 4.6% greater, the mean depth of the bed beneath the grounded ice sheet is 72 m lower and the area of ice sheet grounded on bed below sea level is increased by 10%. The Bedmap2 compilation highlights several areas beneath the ice sheet where the bed elevation is substantially lower than the deepest bed indicated by Bedmap1. These products, along with grids of data coverage and uncertainty, provide new opportunities for detailed modelling of the past and future evolution of the Antarctic ice sheets. |
format |
Article in Journal/Newspaper |
author |
Fretwell, P Pritchard, HD Vaughan, DG Bamber, JL Barrand, NE Bell, R Bianchi, C Bingham, RG Blankenship, DD Casassa, G Catania, G Callens, D Conway, H Cook, AJ Corr, HFJ Damaske, D Damm, V Ferraccioli, F Forsberg, R Fujita, S Gim, Y Gogineni, P Griggs, JA Hindmarsh, RCA Holmlund, P Holt, JW Jacobel, RW Jenkins, A Jokat, W Jordan, T King, EC Kohler, J Krabill, W Riger-Kusk, M Langley, KA Leitchenkov, G Leuschen, C Luyendyk, BP Matsuoka, K Mouginot, J Nitsche, FO Nogi, Y Nost, OA Popov, SV Rignot, E Rippin, DM Rivera, A Roberts, Jason Ross, N Siegert, MJ Smith, AM Steinhage, D Studinger, M Sun, B Tinto, BK Welch, BC Wilson, D Young, DA Xiangbin, C Zirizzotti, A |
author_facet |
Fretwell, P Pritchard, HD Vaughan, DG Bamber, JL Barrand, NE Bell, R Bianchi, C Bingham, RG Blankenship, DD Casassa, G Catania, G Callens, D Conway, H Cook, AJ Corr, HFJ Damaske, D Damm, V Ferraccioli, F Forsberg, R Fujita, S Gim, Y Gogineni, P Griggs, JA Hindmarsh, RCA Holmlund, P Holt, JW Jacobel, RW Jenkins, A Jokat, W Jordan, T King, EC Kohler, J Krabill, W Riger-Kusk, M Langley, KA Leitchenkov, G Leuschen, C Luyendyk, BP Matsuoka, K Mouginot, J Nitsche, FO Nogi, Y Nost, OA Popov, SV Rignot, E Rippin, DM Rivera, A Roberts, Jason Ross, N Siegert, MJ Smith, AM Steinhage, D Studinger, M Sun, B Tinto, BK Welch, BC Wilson, D Young, DA Xiangbin, C Zirizzotti, A |
author_sort |
Fretwell, P |
title |
Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica |
title_short |
Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica |
title_full |
Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica |
title_fullStr |
Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica |
title_full_unstemmed |
Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica |
title_sort |
bedmap2: improved ice bed, surface and thickness datasets for antarctica |
publisher |
Copernicus GmbH |
publishDate |
2013 |
url |
https://doi.org/10.5194/tc-7-375-2013 http://ecite.utas.edu.au/86346 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet The Cryosphere |
op_relation |
http://ecite.utas.edu.au/86346/2/Fretwell_2013_Bedmap2.pdf http://dx.doi.org/10.5194/tc-7-375-2013 Fretwell, P and Pritchard, HD and Vaughan, DG and Bamber, JL and Barrand, NE and Bell, R and Bianchi, C and Bingham, RG and Blankenship, DD and Casassa, G and Catania, G and Callens, D and Conway, H and Cook, AJ and Corr, HFJ and Damaske, D and Damm, V and Ferraccioli, F and Forsberg, R and Fujita, S and Gim, Y and Gogineni, P and Griggs, JA and Hindmarsh, RCA and Holmlund, P and Holt, JW and Jacobel, RW and Jenkins, A and Jokat, W and Jordan, T and King, EC and Kohler, J and Krabill, W and Riger-Kusk, M and Langley, KA and Leitchenkov, G and Leuschen, C and Luyendyk, BP and Matsuoka, K and Mouginot, J and Nitsche, FO and Nogi, Y and Nost, OA and Popov, SV and Rignot, E and Rippin, DM and Rivera, A and Roberts, Jason and Ross, N and Siegert, MJ and Smith, AM and Steinhage, D and Studinger, M and Sun, B and Tinto, BK and Welch, BC and Wilson, D and Young, DA and Xiangbin, C and Zirizzotti, A, Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica, The Cryosphere, 7, (1) pp. 375-393. ISSN 1994-0416 (2013) [Refereed Article] http://ecite.utas.edu.au/86346 |
op_doi |
https://doi.org/10.5194/tc-7-375-2013 |
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The Cryosphere |
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7 |
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375 |
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393 |
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