Seismic attenuation in glacial ice: a proxy for englacial temperature
[1] Seismic attenuation α , or internal friction Q −1 , in glacial ice is highly sensitive to temperature, particularly near the melting point. Here we detail a technique to estimate Q and apply it to active source seismic data from Jakobshavn Isbrae, Greenland. We compare our results to measured an...
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Online Access: | https://doi.org/10.1029/2011JF002201 http://ecite.utas.edu.au/103757 |
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ftunivtasecite:oai:ecite.utas.edu.au:103757 2023-05-15T16:28:25+02:00 Seismic attenuation in glacial ice: a proxy for englacial temperature Peters, LE Anandakrishnan, S Alley, RB Voigt, DE 2012 application/pdf https://doi.org/10.1029/2011JF002201 http://ecite.utas.edu.au/103757 en eng Amer Geophysical Union http://ecite.utas.edu.au/103757/1/Peters_et_al_[2012_JGR].pdf http://dx.doi.org/10.1029/2011JF002201 Peters, LE and Anandakrishnan, S and Alley, RB and Voigt, DE, Seismic attenuation in glacial ice: a proxy for englacial temperature, Journal of Geophysical Research, 117, (F2) pp. 1-10. ISSN 0148-0227 (2012) [Refereed Article] http://ecite.utas.edu.au/103757 Earth Sciences Physical Geography and Environmental Geoscience Glaciology Refereed Article PeerReviewed 2012 ftunivtasecite https://doi.org/10.1029/2011JF002201 2019-12-13T22:05:13Z [1] Seismic attenuation α , or internal friction Q −1 , in glacial ice is highly sensitive to temperature, particularly near the melting point. Here we detail a technique to estimate Q and apply it to active source seismic data from Jakobshavn Isbrae, Greenland. We compare our results to measured and modeled temperature profiles of the ice in the region. We find an excellent match, with differences between seismically estimated and modeled temperatures of less than 2C. Mapping variations in seismic Q through glacial ice thus is shown to allow detailed estimation of englacial temperature profiles, which may be of special value in regions where in situ measurements are logistically difficult. Article in Journal/Newspaper Greenland Jakobshavn eCite UTAS (University of Tasmania) Greenland Journal of Geophysical Research: Earth Surface 117 F2 n/a n/a |
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 Peters, LE Anandakrishnan, S Alley, RB Voigt, DE Seismic attenuation in glacial ice: a proxy for englacial temperature |
topic_facet |
Earth Sciences Physical Geography and Environmental Geoscience Glaciology |
description |
[1] Seismic attenuation α , or internal friction Q −1 , in glacial ice is highly sensitive to temperature, particularly near the melting point. Here we detail a technique to estimate Q and apply it to active source seismic data from Jakobshavn Isbrae, Greenland. We compare our results to measured and modeled temperature profiles of the ice in the region. We find an excellent match, with differences between seismically estimated and modeled temperatures of less than 2C. Mapping variations in seismic Q through glacial ice thus is shown to allow detailed estimation of englacial temperature profiles, which may be of special value in regions where in situ measurements are logistically difficult. |
format |
Article in Journal/Newspaper |
author |
Peters, LE Anandakrishnan, S Alley, RB Voigt, DE |
author_facet |
Peters, LE Anandakrishnan, S Alley, RB Voigt, DE |
author_sort |
Peters, LE |
title |
Seismic attenuation in glacial ice: a proxy for englacial temperature |
title_short |
Seismic attenuation in glacial ice: a proxy for englacial temperature |
title_full |
Seismic attenuation in glacial ice: a proxy for englacial temperature |
title_fullStr |
Seismic attenuation in glacial ice: a proxy for englacial temperature |
title_full_unstemmed |
Seismic attenuation in glacial ice: a proxy for englacial temperature |
title_sort |
seismic attenuation in glacial ice: a proxy for englacial temperature |
publisher |
Amer Geophysical Union |
publishDate |
2012 |
url |
https://doi.org/10.1029/2011JF002201 http://ecite.utas.edu.au/103757 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Jakobshavn |
genre_facet |
Greenland Jakobshavn |
op_relation |
http://ecite.utas.edu.au/103757/1/Peters_et_al_[2012_JGR].pdf http://dx.doi.org/10.1029/2011JF002201 Peters, LE and Anandakrishnan, S and Alley, RB and Voigt, DE, Seismic attenuation in glacial ice: a proxy for englacial temperature, Journal of Geophysical Research, 117, (F2) pp. 1-10. ISSN 0148-0227 (2012) [Refereed Article] http://ecite.utas.edu.au/103757 |
op_doi |
https://doi.org/10.1029/2011JF002201 |
container_title |
Journal of Geophysical Research: Earth Surface |
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117 |
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F2 |
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1766018070986358784 |