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Seismic attenuation in glacial ice: a proxy for englacial temperature

Citation

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]


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Copyright Statement

Copyright 2012 American Geophysical Union

DOI: doi:10.1029/2011JF002201

Abstract

[1]áSeismic 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 2░C. 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.

Item Details

Item Type:Refereed Article
Keywords:englacial temperature, seismology
Research Division:Earth Sciences
Research Group:Physical Geography and Environmental Geoscience
Research Field:Glaciology
Objective Division:Environment
Objective Group:Climate and Climate Change
Objective Field:Effects of Climate Change and Variability on Antarctic and Sub-Antarctic Environments (excl. Social Impacts)
UTAS Author:Peters, LE (Dr Leo Peters)
ID Code:103757
Year Published:2012
Web of Science® Times Cited:41
Deposited By:IMAS Research and Education Centre
Deposited On:2015-10-27
Last Modified:2017-10-30
Downloads:198 View Download Statistics

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