The forgotten component of sub-glacial heat flow: upper crustal heat production and resultant total heat flux on the Antarctic Peninsula

Seismic and magnetic geophysical methods have both been employed to produce estimates of heat flux beneaththe Antarctic ice sheet. However, both methods use a homogeneous upper crustal model despite the variableconcentration of heat producing elements within its composite lithologies.Using geologica...

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Bibliographic Details
Main Authors: Burton-Johnson, A, Halpin, J, Whittaker, J, Watson, S
Format: Conference Object
Language:English
Published: Copernicus GmbH 2017
Subjects:
Earth Sciences
Geology
Tectonics
Antarctic
Antarctic Peninsula
The Antarctic
Antarc*
Ice Sheet
Online Access:http://ecite.utas.edu.au/116867
Description
Summary:Seismic and magnetic geophysical methods have both been employed to produce estimates of heat flux beneaththe Antarctic ice sheet. However, both methods use a homogeneous upper crustal model despite the variableconcentration of heat producing elements within its composite lithologies.Using geological and geochemical datasets from the Antarctic Peninsula we have developed a new methodologyfor incorporating upper crustal heat production in heat flux models and have shown the greater variability thisintroduces in to estimates of crustal heat flux, with implications for glaciological modelling.

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