Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements
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 surv...
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Geophysical Research Abstracts Vol. 15, EGU2013-2887
2013
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ftawi:oai:epic.awi.de:30528 2024-09-15T17:46:48+00:00 Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements Eisen, Olaf Hofstede, Coen Diez, Anja Kristoffersen, Yngve 2013-04-09 application/pdf https://epic.awi.de/id/eprint/30528/ https://epic.awi.de/id/eprint/30528/1/EGU2013-2887-2.pdf http://meetingorganizer.copernicus.org/EGU2013/EGU2013-2887-2.pdf https://hdl.handle.net/10013/epic.41258 https://hdl.handle.net/10013/epic.41258.d001 unknown Geophysical Research Abstracts Vol. 15, EGU2013-2887 https://epic.awi.de/id/eprint/30528/1/EGU2013-2887-2.pdf https://hdl.handle.net/10013/epic.41258.d001 Eisen, O. orcid:0000-0002-6380-962X , Hofstede, C. orcid:0000-0002-6015-6918 , 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 . hdl:10013/epic.41258 EPIC3EGU General Assembly, Vienna, 2013-04-07-2013-04-12Geophysical Research Abstracts Vol. 15, EGU2013-2887 Conference notRev 2013 ftawi 2024-06-24T04:05:07Z 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. Conference Object Antarc* Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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unknown |
description |
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. |
format |
Conference Object |
author |
Eisen, Olaf Hofstede, Coen Diez, Anja Kristoffersen, Yngve |
spellingShingle |
Eisen, Olaf Hofstede, Coen Diez, Anja Kristoffersen, Yngve Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements |
author_facet |
Eisen, Olaf Hofstede, Coen Diez, Anja Kristoffersen, Yngve |
author_sort |
Eisen, Olaf |
title |
Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements |
title_short |
Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements |
title_full |
Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements |
title_fullStr |
Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements |
title_full_unstemmed |
Subglacial geology of Halvfarryggen ice dome, Antarctia, inferred from seismic measurements |
title_sort |
subglacial geology of halvfarryggen ice dome, antarctia, inferred from seismic measurements |
publisher |
Geophysical Research Abstracts Vol. 15, EGU2013-2887 |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/30528/ https://epic.awi.de/id/eprint/30528/1/EGU2013-2887-2.pdf http://meetingorganizer.copernicus.org/EGU2013/EGU2013-2887-2.pdf https://hdl.handle.net/10013/epic.41258 https://hdl.handle.net/10013/epic.41258.d001 |
genre |
Antarc* |
genre_facet |
Antarc* |
op_source |
EPIC3EGU General Assembly, Vienna, 2013-04-07-2013-04-12Geophysical Research Abstracts Vol. 15, EGU2013-2887 |
op_relation |
https://epic.awi.de/id/eprint/30528/1/EGU2013-2887-2.pdf https://hdl.handle.net/10013/epic.41258.d001 Eisen, O. orcid:0000-0002-6380-962X , Hofstede, C. orcid:0000-0002-6015-6918 , 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 . hdl:10013/epic.41258 |
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