eCite Digital Repository
Heat and groundwater transport between the Antarctic Ice Sheet and subglacial sedimentary basins from electromagnetic geophysical measurements
Citation
Kulessa, B and Key, K and Thompson, S and Siegert, M, Heat and groundwater transport between the Antarctic Ice Sheet and subglacial sedimentary basins from electromagnetic geophysical measurements, SEG Technical Program Expanded Abstracts, 15-20 September 2019, San Antonio, USA, pp. 4819-4823. ISSN 1052-3812 (2019) [Refereed Conference Paper]
![]() | PDF Restricted - Request a copy 527Kb |
Copyright Statement
Copyright 2019 SEG
DOI: doi:10.1190/segam2019-3215566.1
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.
Item Details
Item Type: | Refereed Conference Paper |
---|---|
Keywords: | Antarctica, ground heat transport, sedimentary basins |
Research Division: | Earth Sciences |
Research Group: | Geophysics |
Research Field: | Electrical and electromagnetic methods in geophysics |
Objective Division: | Environmental Policy, Climate Change and Natural Hazards |
Objective Group: | Understanding climate change |
Objective Field: | Effects of climate change on Antarctic and sub-Antarctic environments (excl. social impacts) |
UTAS Author: | Thompson, S (Dr Sarah Thompson) |
ID Code: | 140815 |
Year Published: | 2019 |
Deposited By: | Australian Antarctic Program Partnership |
Deposited On: | 2020-09-09 |
Last Modified: | 2021-06-30 |
Downloads: | 0 |
Repository Staff Only: item control page