Seismic reflection studies of the Amery Ice Shelf, East Antarctica:Delineating meteoric and marine ice
A detailed seismic reflection survey has been performed, utilizing a 24-channel spread with a 10 m geophone spacing, giving a maximum fold coverage of six, with the aim of revealing a detailed view of the subsurface structure of the Amery Ice Shelf, showing meteoric and marine ice thicknesses, water...
Published in: | Geophysical Journal International |
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Language: | English |
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2006
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Online Access: | https://researchers.mq.edu.au/en/publications/af0a0447-962f-4f6e-8cc3-913401bfca31 https://doi.org/10.1111/j.1365-246X.2006.03043.x http://www.scopus.com/inward/record.url?scp=33746131929&partnerID=8YFLogxK |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/af0a0447-962f-4f6e-8cc3-913401bfca31 2023-05-15T13:22:00+02:00 Seismic reflection studies of the Amery Ice Shelf, East Antarctica:Delineating meteoric and marine ice McMahon, Kathleen L. Lackie, Mark A. 2006-08 https://researchers.mq.edu.au/en/publications/af0a0447-962f-4f6e-8cc3-913401bfca31 https://doi.org/10.1111/j.1365-246X.2006.03043.x http://www.scopus.com/inward/record.url?scp=33746131929&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess McMahon , K L & Lackie , M A 2006 , ' Seismic reflection studies of the Amery Ice Shelf, East Antarctica : Delineating meteoric and marine ice ' , Geophysical Journal International , vol. 166 , no. 2 , pp. 757-766 . https://doi.org/10.1111/j.1365-246X.2006.03043.x article 2006 ftmacquarieunicr https://doi.org/10.1111/j.1365-246X.2006.03043.x 2022-11-06T06:39:09Z A detailed seismic reflection survey has been performed, utilizing a 24-channel spread with a 10 m geophone spacing, giving a maximum fold coverage of six, with the aim of revealing a detailed view of the subsurface structure of the Amery Ice Shelf, showing meteoric and marine ice thicknesses, water column thickness and sediment structure. The survey has successfully delineated the subhorizontal meteoric and marine ice layers, with average thicknesses of 754 and 20 m, respectively. The water column is 595 m thick, placing the seafloor at a depth of 1369 m below the ice surface. A 55 m thick, subhorizontally layered sedimentary unit can be seen, below which are deep features, at approximately 2225 m below the surface. These features could reveal the presence of dykes, a broken bedrock surface or glaciologically derived clasts that are sufficiently large enough to show up within the data. Article in Journal/Newspaper Amery Ice Shelf Antarc* Ice Shelf Macquarie University Research Portal Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Geophysical Journal International 166 2 757 766 |
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Open Polar |
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Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
description |
A detailed seismic reflection survey has been performed, utilizing a 24-channel spread with a 10 m geophone spacing, giving a maximum fold coverage of six, with the aim of revealing a detailed view of the subsurface structure of the Amery Ice Shelf, showing meteoric and marine ice thicknesses, water column thickness and sediment structure. The survey has successfully delineated the subhorizontal meteoric and marine ice layers, with average thicknesses of 754 and 20 m, respectively. The water column is 595 m thick, placing the seafloor at a depth of 1369 m below the ice surface. A 55 m thick, subhorizontally layered sedimentary unit can be seen, below which are deep features, at approximately 2225 m below the surface. These features could reveal the presence of dykes, a broken bedrock surface or glaciologically derived clasts that are sufficiently large enough to show up within the data. |
format |
Article in Journal/Newspaper |
author |
McMahon, Kathleen L. Lackie, Mark A. |
spellingShingle |
McMahon, Kathleen L. Lackie, Mark A. Seismic reflection studies of the Amery Ice Shelf, East Antarctica:Delineating meteoric and marine ice |
author_facet |
McMahon, Kathleen L. Lackie, Mark A. |
author_sort |
McMahon, Kathleen L. |
title |
Seismic reflection studies of the Amery Ice Shelf, East Antarctica:Delineating meteoric and marine ice |
title_short |
Seismic reflection studies of the Amery Ice Shelf, East Antarctica:Delineating meteoric and marine ice |
title_full |
Seismic reflection studies of the Amery Ice Shelf, East Antarctica:Delineating meteoric and marine ice |
title_fullStr |
Seismic reflection studies of the Amery Ice Shelf, East Antarctica:Delineating meteoric and marine ice |
title_full_unstemmed |
Seismic reflection studies of the Amery Ice Shelf, East Antarctica:Delineating meteoric and marine ice |
title_sort |
seismic reflection studies of the amery ice shelf, east antarctica:delineating meteoric and marine ice |
publishDate |
2006 |
url |
https://researchers.mq.edu.au/en/publications/af0a0447-962f-4f6e-8cc3-913401bfca31 https://doi.org/10.1111/j.1365-246X.2006.03043.x http://www.scopus.com/inward/record.url?scp=33746131929&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) |
geographic |
Amery Amery Ice Shelf |
geographic_facet |
Amery Amery Ice Shelf |
genre |
Amery Ice Shelf Antarc* Ice Shelf |
genre_facet |
Amery Ice Shelf Antarc* Ice Shelf |
op_source |
McMahon , K L & Lackie , M A 2006 , ' Seismic reflection studies of the Amery Ice Shelf, East Antarctica : Delineating meteoric and marine ice ' , Geophysical Journal International , vol. 166 , no. 2 , pp. 757-766 . https://doi.org/10.1111/j.1365-246X.2006.03043.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1365-246X.2006.03043.x |
container_title |
Geophysical Journal International |
container_volume |
166 |
container_issue |
2 |
container_start_page |
757 |
op_container_end_page |
766 |
_version_ |
1766362735057043456 |