Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements


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Olaf.Eisen [ at ] awi.de

Abstract

We carried out a combined vibro-explosive seismic survey on Halvfarryggen, a local ice dome south of Neumayer III. The Vibroseis survey was grid shaped to provide spatial information about the glaciological and geological substructure. The center survey line was also surveyed with explosive reflection and refraction seismic set-ups. The ice bed contact we interpret as a frozen till layer overlaying bedrock. Velocity analysis from refractions seen in far offset data, we obtain a pressure-wave velocity >5000 m/s. We therefore interpret the bedrock as igneous.



Item Type
Conference (Talk)
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Primary Division
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Peer revision
Not peer-reviewed
Publication Status
Published
Event Details
25. Internationale Polartagung, 17 Mar 2013 - 22 Mar 2013, Hamburg, Germany.
Eprint ID
31898
Cite as
Eisen, O. , Hofstede, C. , Diez, A. and Kristoffersen, Y. (2013): Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements , 25. Internationale Polartagung, Hamburg, Germany, 17 March 2013 - 22 March 2013 .


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