hdl:10013/epic.41258
Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements
Eisen, Olaf ORCID: https://orcid.org/0000-0002-6380-962X, Hofstede, Coen ORCID: https://orcid.org/0000-0002-6015-6918, Diez, Anja and Kristoffersen, Yngve
;
Contact
Olaf.Eisen [ at ] awi.de
Abstract
We carried out a combined vibro-explosive seismic survey on Halvfarryggen, a local ice dome south of the German research station 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. From velocity analysis of refractions seen in far offset data, we obtain a pressure-wave velocity >5000 m/s. We therefore interpret the bedrock as igneous, which supplements previous magnetic and gravimetric data sets.
Item Type
Conference
(Poster)
Authors
Eisen, Olaf ORCID: https://orcid.org/0000-0002-6380-962X, Hofstede, Coen ORCID: https://orcid.org/0000-0002-6015-6918, Diez, Anja and Kristoffersen, Yngve
;
Divisions
AWI Organizations > Geosciences > Glaciology
AWI Organizations > Geosciences > (deprecated) Junior Research Group: LIMPICS
AWI Organizations > Geosciences > (deprecated) Junior Research Group: LIMPICS
Primary Division
Programs
Helmholtz Research Programs > PACES I (2009-2013) > TOPIC 1: The Changing Arctic and Antarctic > WP 1.1: Role of Ice Sheets in the Earth System
Primary Topic
Helmholtz Programs > Helmholtz Research Programs > PACES I (2009-2013) > TOPIC 1: The Changing Arctic and Antarctic
Publication Status
Published
Event Details
EGU General Assembly, 07 Apr 2013 - 12 Apr 2013, Vienna.
Eprint ID
30528
Cite as
Eisen, O.
,
Hofstede, C.
,
Diez, A.
and
Kristoffersen, Y.
(2013):
Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from
seismic measurements
,
EGU General Assembly,
Vienna,
7 April 2013 - 12 April 2013
.
Download
Cite this document as:
Share
Research Platforms
Campaigns
N/A
Actions