Subglacial sediments: A regional geological template for ice flow in West Antarctica
We use aerogeophysical data to estimate the distribution of marine subglacial sediments and fault“bounded sedimentary basins beneath the West Antarctic Ice Sheet (WAIS). We find that significant ice flow occurs exclusively in regions covered by subglacial sediments. The onsets and lateral margins of...
Main Authors: | , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2001
|
Subjects: | |
Online Access: | https://doi.org/10.7916/D87S7Z9D |
id |
ftcolumbiauniv:oai:academiccommons.columbia.edu:10.7916/D87S7Z9D |
---|---|
record_format |
openpolar |
spelling |
ftcolumbiauniv:oai:academiccommons.columbia.edu:10.7916/D87S7Z9D 2023-05-15T13:50:01+02:00 Subglacial sediments: A regional geological template for ice flow in West Antarctica Studinger, Michael Bell, Robin E. Blankenship, Donald D. Finn, Carol A. Arko, Robert A. Morse, David L. Joughin, Ian 2001 https://doi.org/10.7916/D87S7Z9D English eng https://doi.org/10.7916/D87S7Z9D Hydrology Submarine geology Geophysics Articles 2001 ftcolumbiauniv https://doi.org/10.7916/D87S7Z9D 2019-04-04T08:06:32Z We use aerogeophysical data to estimate the distribution of marine subglacial sediments and fault“bounded sedimentary basins beneath the West Antarctic Ice Sheet (WAIS). We find that significant ice flow occurs exclusively in regions covered by subglacial sediments. The onsets and lateral margins of ice streams coincide with the limit of marine sediments. Lateral margins are also consistently linked with fault“bounded basins. We predict that the inland migration of ice streams B and C 1 towards the ice divide outside the region covered by marine or rift sediments is unlikely. The subglacial geology has the potential to modulate the dynamic evolution of the ice streams and the WAIS. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet West Antarctica Columbia University: Academic Commons Antarctic West Antarctic Ice Sheet West Antarctica |
institution |
Open Polar |
collection |
Columbia University: Academic Commons |
op_collection_id |
ftcolumbiauniv |
language |
English |
topic |
Hydrology Submarine geology Geophysics |
spellingShingle |
Hydrology Submarine geology Geophysics Studinger, Michael Bell, Robin E. Blankenship, Donald D. Finn, Carol A. Arko, Robert A. Morse, David L. Joughin, Ian Subglacial sediments: A regional geological template for ice flow in West Antarctica |
topic_facet |
Hydrology Submarine geology Geophysics |
description |
We use aerogeophysical data to estimate the distribution of marine subglacial sediments and fault“bounded sedimentary basins beneath the West Antarctic Ice Sheet (WAIS). We find that significant ice flow occurs exclusively in regions covered by subglacial sediments. The onsets and lateral margins of ice streams coincide with the limit of marine sediments. Lateral margins are also consistently linked with fault“bounded basins. We predict that the inland migration of ice streams B and C 1 towards the ice divide outside the region covered by marine or rift sediments is unlikely. The subglacial geology has the potential to modulate the dynamic evolution of the ice streams and the WAIS. |
format |
Article in Journal/Newspaper |
author |
Studinger, Michael Bell, Robin E. Blankenship, Donald D. Finn, Carol A. Arko, Robert A. Morse, David L. Joughin, Ian |
author_facet |
Studinger, Michael Bell, Robin E. Blankenship, Donald D. Finn, Carol A. Arko, Robert A. Morse, David L. Joughin, Ian |
author_sort |
Studinger, Michael |
title |
Subglacial sediments: A regional geological template for ice flow in West Antarctica |
title_short |
Subglacial sediments: A regional geological template for ice flow in West Antarctica |
title_full |
Subglacial sediments: A regional geological template for ice flow in West Antarctica |
title_fullStr |
Subglacial sediments: A regional geological template for ice flow in West Antarctica |
title_full_unstemmed |
Subglacial sediments: A regional geological template for ice flow in West Antarctica |
title_sort |
subglacial sediments: a regional geological template for ice flow in west antarctica |
publishDate |
2001 |
url |
https://doi.org/10.7916/D87S7Z9D |
geographic |
Antarctic West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Antarctic West Antarctic Ice Sheet West Antarctica |
genre |
Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
op_relation |
https://doi.org/10.7916/D87S7Z9D |
op_doi |
https://doi.org/10.7916/D87S7Z9D |
_version_ |
1766252746272407552 |