Modern Uplift of the Transantarctic Mountains: Preliminary Results of an Autonomous GPS Array
An autonomous GPS array is being implemented in the Transantarctic Mountains, sponsored by NSF and NASA, for the purpose of measuring uplift resulting from post-glacial rebound (PGR). The rebound of the solid earth due to unloading of ice since the Last Glacial Maximum is expected to dominate the me...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20000052464 2023-05-15T14:03:46+02:00 Modern Uplift of the Transantarctic Mountains: Preliminary Results of an Autonomous GPS Array James, T. S. Ivins, E. R. Heflin, M. B. Raymond, C. A. Unclassified, Unlimited, Publicly available [1998] application/pdf http://hdl.handle.net/2060/20000052464 unknown Document ID: 20000052464 http://hdl.handle.net/2060/20000052464 No Copyright CASI Geophysics 1998 ftnasantrs 2015-03-15T02:43:33Z An autonomous GPS array is being implemented in the Transantarctic Mountains, sponsored by NSF and NASA, for the purpose of measuring uplift resulting from post-glacial rebound (PGR). The rebound of the solid earth due to unloading of ice since the Last Glacial Maximum is expected to dominate the measured uplift for most of West Antarctica, dwarfing the signals due to present-day ice sheet mass balance changes and tectonic motion, as long as mantle viscosity is greater than about 10(exp 20) Pa-s. Predicted uplift patterns have been calculated for a range of model scenarios, which illustrate how the uplift pattern might distinguish between different-sized ice sheets and deglaciation histories as represented by the competing models. The scenarios considered by James and Ivins (1998) include ICE-3G, CLIMAP and a variation of the CLIMAP model by Denton et al. For these models, peak uplift rates occur in the Transantarctic Mountains, and differences between models is often large there. Thus, the Transantarctic Mountains are an ideal place to obtain uplift measurements to constrain deglaciation models. Other/Unknown Material Antarc* Antarctica Ice Sheet West Antarctica NASA Technical Reports Server (NTRS) Transantarctic Mountains West Antarctica |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Geophysics |
spellingShingle |
Geophysics James, T. S. Ivins, E. R. Heflin, M. B. Raymond, C. A. Modern Uplift of the Transantarctic Mountains: Preliminary Results of an Autonomous GPS Array |
topic_facet |
Geophysics |
description |
An autonomous GPS array is being implemented in the Transantarctic Mountains, sponsored by NSF and NASA, for the purpose of measuring uplift resulting from post-glacial rebound (PGR). The rebound of the solid earth due to unloading of ice since the Last Glacial Maximum is expected to dominate the measured uplift for most of West Antarctica, dwarfing the signals due to present-day ice sheet mass balance changes and tectonic motion, as long as mantle viscosity is greater than about 10(exp 20) Pa-s. Predicted uplift patterns have been calculated for a range of model scenarios, which illustrate how the uplift pattern might distinguish between different-sized ice sheets and deglaciation histories as represented by the competing models. The scenarios considered by James and Ivins (1998) include ICE-3G, CLIMAP and a variation of the CLIMAP model by Denton et al. For these models, peak uplift rates occur in the Transantarctic Mountains, and differences between models is often large there. Thus, the Transantarctic Mountains are an ideal place to obtain uplift measurements to constrain deglaciation models. |
author |
James, T. S. Ivins, E. R. Heflin, M. B. Raymond, C. A. |
author_facet |
James, T. S. Ivins, E. R. Heflin, M. B. Raymond, C. A. |
author_sort |
James, T. S. |
title |
Modern Uplift of the Transantarctic Mountains: Preliminary Results of an Autonomous GPS Array |
title_short |
Modern Uplift of the Transantarctic Mountains: Preliminary Results of an Autonomous GPS Array |
title_full |
Modern Uplift of the Transantarctic Mountains: Preliminary Results of an Autonomous GPS Array |
title_fullStr |
Modern Uplift of the Transantarctic Mountains: Preliminary Results of an Autonomous GPS Array |
title_full_unstemmed |
Modern Uplift of the Transantarctic Mountains: Preliminary Results of an Autonomous GPS Array |
title_sort |
modern uplift of the transantarctic mountains: preliminary results of an autonomous gps array |
publishDate |
1998 |
url |
http://hdl.handle.net/2060/20000052464 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Transantarctic Mountains West Antarctica |
geographic_facet |
Transantarctic Mountains West Antarctica |
genre |
Antarc* Antarctica Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctica Ice Sheet West Antarctica |
op_source |
CASI |
op_relation |
Document ID: 20000052464 http://hdl.handle.net/2060/20000052464 |
op_rights |
No Copyright |
_version_ |
1766274618405945344 |