Monitoring Southwest Greenland’s Ice Sheet Melt with Ambient Seismic Noise
The Greenland ice sheet presently accounts for ~70% of global ice sheet mass loss. Because this mass loss is associated with sea-level rise at a rate of 0.7 mm/year, the development of improved monitoring techniques to observe ongoing changes in ice sheet mass balance is of paramount concern. Spaceb...
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ftboisestateu:oai:scholarworks.boisestate.edu:cgiss_facpubs-1208 2023-10-29T02:32:27+01:00 Monitoring Southwest Greenland’s Ice Sheet Melt with Ambient Seismic Noise Mordret, Aurélien Mikesell, T. Dylan Harig, Christopher Lipovsky, Bradley P. Prieto, Germán A. 2016-05-06T07:00:00Z application/pdf https://scholarworks.boisestate.edu/cgiss_facpubs/209 https://scholarworks.boisestate.edu/context/cgiss_facpubs/article/1208/viewcontent/Mikesell___Monitoring_southwest_greenland_s.pdf unknown ScholarWorks https://scholarworks.boisestate.edu/cgiss_facpubs/209 https://scholarworks.boisestate.edu/context/cgiss_facpubs/article/1208/viewcontent/Mikesell___Monitoring_southwest_greenland_s.pdf This document was originally published in Science Advances by the American Association for the Advancement of Science (AAAS). This work is provided under a Creative Commons Attribution 4.0 license. Details regarding the use of this work can be found at: https://creativecommons.org/licenses/by/4.0/ . doi: 10.1126/sciadv.1501538 CGISS Publications and Presentations East Antarctic Ice Sheet Antarctica sea ice glaciers Wilkes Land Geosciences Earth Sciences Geophysics and Seismology text 2016 ftboisestateu 2023-09-29T15:14:42Z The Greenland ice sheet presently accounts for ~70% of global ice sheet mass loss. Because this mass loss is associated with sea-level rise at a rate of 0.7 mm/year, the development of improved monitoring techniques to observe ongoing changes in ice sheet mass balance is of paramount concern. Spaceborne mass balance techniques are commonly used; however, they are inadequate for many purposes because of their low spatial and/or temporal resolution. We demonstrate that small variations in seismic wave speed in Earth’s crust, as measured with the correlation of seismic noise, may be used to infer seasonal ice sheet mass balance. Seasonal loading and unloading of glacial mass induces strain in the crust, and these strains then result in seismic velocity changes due to poroelastic processes. Our method provides a new and independent way of monitoring (in near real time) ice sheet mass balance, yielding new constraints on ice sheet evolution and its contribution to global sea-level changes. An increased number of seismic stations in the vicinity of ice sheets will enhance our ability to create detailed space-time records of ice mass variations. Text Antarc* Antarctic Antarctica Greenland Ice Sheet Sea ice Wilkes Land Boise State University: Scholar Works |
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Boise State University: Scholar Works |
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unknown |
topic |
East Antarctic Ice Sheet Antarctica sea ice glaciers Wilkes Land Geosciences Earth Sciences Geophysics and Seismology |
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East Antarctic Ice Sheet Antarctica sea ice glaciers Wilkes Land Geosciences Earth Sciences Geophysics and Seismology Mordret, Aurélien Mikesell, T. Dylan Harig, Christopher Lipovsky, Bradley P. Prieto, Germán A. Monitoring Southwest Greenland’s Ice Sheet Melt with Ambient Seismic Noise |
topic_facet |
East Antarctic Ice Sheet Antarctica sea ice glaciers Wilkes Land Geosciences Earth Sciences Geophysics and Seismology |
description |
The Greenland ice sheet presently accounts for ~70% of global ice sheet mass loss. Because this mass loss is associated with sea-level rise at a rate of 0.7 mm/year, the development of improved monitoring techniques to observe ongoing changes in ice sheet mass balance is of paramount concern. Spaceborne mass balance techniques are commonly used; however, they are inadequate for many purposes because of their low spatial and/or temporal resolution. We demonstrate that small variations in seismic wave speed in Earth’s crust, as measured with the correlation of seismic noise, may be used to infer seasonal ice sheet mass balance. Seasonal loading and unloading of glacial mass induces strain in the crust, and these strains then result in seismic velocity changes due to poroelastic processes. Our method provides a new and independent way of monitoring (in near real time) ice sheet mass balance, yielding new constraints on ice sheet evolution and its contribution to global sea-level changes. An increased number of seismic stations in the vicinity of ice sheets will enhance our ability to create detailed space-time records of ice mass variations. |
format |
Text |
author |
Mordret, Aurélien Mikesell, T. Dylan Harig, Christopher Lipovsky, Bradley P. Prieto, Germán A. |
author_facet |
Mordret, Aurélien Mikesell, T. Dylan Harig, Christopher Lipovsky, Bradley P. Prieto, Germán A. |
author_sort |
Mordret, Aurélien |
title |
Monitoring Southwest Greenland’s Ice Sheet Melt with Ambient Seismic Noise |
title_short |
Monitoring Southwest Greenland’s Ice Sheet Melt with Ambient Seismic Noise |
title_full |
Monitoring Southwest Greenland’s Ice Sheet Melt with Ambient Seismic Noise |
title_fullStr |
Monitoring Southwest Greenland’s Ice Sheet Melt with Ambient Seismic Noise |
title_full_unstemmed |
Monitoring Southwest Greenland’s Ice Sheet Melt with Ambient Seismic Noise |
title_sort |
monitoring southwest greenland’s ice sheet melt with ambient seismic noise |
publisher |
ScholarWorks |
publishDate |
2016 |
url |
https://scholarworks.boisestate.edu/cgiss_facpubs/209 https://scholarworks.boisestate.edu/context/cgiss_facpubs/article/1208/viewcontent/Mikesell___Monitoring_southwest_greenland_s.pdf |
genre |
Antarc* Antarctic Antarctica Greenland Ice Sheet Sea ice Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctica Greenland Ice Sheet Sea ice Wilkes Land |
op_source |
CGISS Publications and Presentations |
op_relation |
https://scholarworks.boisestate.edu/cgiss_facpubs/209 https://scholarworks.boisestate.edu/context/cgiss_facpubs/article/1208/viewcontent/Mikesell___Monitoring_southwest_greenland_s.pdf |
op_rights |
This document was originally published in Science Advances by the American Association for the Advancement of Science (AAAS). This work is provided under a Creative Commons Attribution 4.0 license. Details regarding the use of this work can be found at: https://creativecommons.org/licenses/by/4.0/ . doi: 10.1126/sciadv.1501538 |
_version_ |
1781053884465152000 |