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Heat and groundwater transport between the Antarctic Ice Sheet and subglacial sedimentary basins from electromagnetic geophysical measurements
File(s)
Kulessa_etal_SEG_2019.pdf (519.19 KB)
Published version
Author(s)
Kulessa, Bernd
Key, Kerry
Thompson, Sarah
Siegert, Martin
Type
Conference Paper
Abstract
Numerical models of contemporary as well as paleo-ice sheets suggest that groundwater and heat exchanges between subglacial sedimentary basins and the ice sheet above, can be substantial and influence the flow of ice above. So far, an approach for the measurement and assessment of such heat fluxes has not been available. Here, we summarise existing evidence for groundwater and heat exchanges between contemporary and paleo ice sheets and the substrate below. We then explain the utility of electromagnetic geophysical measurements in elucidating such exchanges, and present magnetotelluric synthetic models of the deep sedimentary basin beneath the Institute Ice Stream in West Antarctica by way of illustration. Finally, we propose a simple empirical model by which heat exchanges between subglacial sedimentary basins and the overlying ice sheet can be estimated to first-order from electromagnetic data.
Date Issued
2019-08
Date Acceptance
2019-08-01
Citation
SEG Technical Program Expanded Abstracts 2019, 2019, pp.4819-4823
URI
URL
DOI
ISSN
1949-4645
Publisher
Society of Exploration Geophysicists
Start Page
4819
End Page
4823
Journal / Book Title
SEG Technical Program Expanded Abstracts 2019
Copyright Statement
© 2019 SEG. This is SEG-published version of Heat and groundwater transport between the Antarctic Ice Sheet and subglacial sedimentary basins from electromagnetic geophysical measurements
Bernd Kulessa, Kerry Key, Sarah Thompson, and Martin Siegert
SEG Technical Program Expanded Abstracts 2019. August 2019, 4819-4823, presented without modification.
Sponsor
British Council (UK)
Identifier
https://library.seg.org/doi/10.1190/segam2019-3215566.1
Grant Number
ICECAP-2
Source
SEG International Exposition and 89th Annual Meeting
Subjects
Geochemistry & Geophysics
Publication Status
Published
Start Date
2019-09-15
Finish Date
2019-09-20
Coverage Spatial
San Antonio, Texas USA
Date Publish Online
2019-08