Seafloor morphology and acoustic facies of the George V Land shelf
To study the seafloor morphology on the George V Land shelf, East Antarctica, over 2000 km of high-frequency 3.5-27 kHz, echo-sounder data were collected between February and March 2000. The shelf can be divided into four acoustic facies: (a) Type IA-2 seabed is ice-keel turbate found on mid- to out...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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ftunivtasecite:oai:ecite.utas.edu.au:28235 2023-05-15T14:03:54+02:00 Seafloor morphology and acoustic facies of the George V Land shelf Beaman, RJ Harris, PT 2003 https://doi.org/10.1016/S0967-0645(03)00071-7 http://ecite.utas.edu.au/28235 en eng Pergamon-Elsevier Science Ltd http://dx.doi.org/10.1016/S0967-0645(03)00071-7 Beaman, RJ and Harris, PT, Seafloor morphology and acoustic facies of the George V Land shelf, Deep Sea Research Part II: Topical Studies in Oceanography, 50, (8-9) pp. 1343-1355. ISSN 0967-0645 (2003) [Refereed Article] http://ecite.utas.edu.au/28235 Earth Sciences Oceanography Physical Oceanography Refereed Article PeerReviewed 2003 ftunivtasecite https://doi.org/10.1016/S0967-0645(03)00071-7 2019-12-13T21:08:46Z To study the seafloor morphology on the George V Land shelf, East Antarctica, over 2000 km of high-frequency 3.5-27 kHz, echo-sounder data were collected between February and March 2000. The shelf can be divided into four acoustic facies: (a) Type IA-2 seabed is ice-keel turbate found on mid- to outer-shelf banks on seaftoor less than 500 m deep; (b) Type IB seabed is siliceous mud and diatom ooze drift, drape and fill deposits within the George V Basin between 750 and 850 m depth; (c) Type IIB seabed is smooth diamicton below 500 m depth, and occasionally has low-relief megaflutes or ridge and swale features; (d) Type IIIC seabed is high relief ridges and canyons from the coast to the deepest part of the George V Basin. The acoustic facies are explained in terms of glacial and oceanographic influences on the shelf since the Last Glacial Maximum. 2003 Elsevier Science Ltd. All rights reserved. Article in Journal/Newspaper Antarc* Antarctica East Antarctica George V Land eCite UTAS (University of Tasmania) East Antarctica George V Land ENVELOPE(148.000,148.000,-68.500,-68.500) Deep Sea Research Part II: Topical Studies in Oceanography 50 8-9 1343 1355 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Physical Oceanography |
spellingShingle |
Earth Sciences Oceanography Physical Oceanography Beaman, RJ Harris, PT Seafloor morphology and acoustic facies of the George V Land shelf |
topic_facet |
Earth Sciences Oceanography Physical Oceanography |
description |
To study the seafloor morphology on the George V Land shelf, East Antarctica, over 2000 km of high-frequency 3.5-27 kHz, echo-sounder data were collected between February and March 2000. The shelf can be divided into four acoustic facies: (a) Type IA-2 seabed is ice-keel turbate found on mid- to outer-shelf banks on seaftoor less than 500 m deep; (b) Type IB seabed is siliceous mud and diatom ooze drift, drape and fill deposits within the George V Basin between 750 and 850 m depth; (c) Type IIB seabed is smooth diamicton below 500 m depth, and occasionally has low-relief megaflutes or ridge and swale features; (d) Type IIIC seabed is high relief ridges and canyons from the coast to the deepest part of the George V Basin. The acoustic facies are explained in terms of glacial and oceanographic influences on the shelf since the Last Glacial Maximum. 2003 Elsevier Science Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Beaman, RJ Harris, PT |
author_facet |
Beaman, RJ Harris, PT |
author_sort |
Beaman, RJ |
title |
Seafloor morphology and acoustic facies of the George V Land shelf |
title_short |
Seafloor morphology and acoustic facies of the George V Land shelf |
title_full |
Seafloor morphology and acoustic facies of the George V Land shelf |
title_fullStr |
Seafloor morphology and acoustic facies of the George V Land shelf |
title_full_unstemmed |
Seafloor morphology and acoustic facies of the George V Land shelf |
title_sort |
seafloor morphology and acoustic facies of the george v land shelf |
publisher |
Pergamon-Elsevier Science Ltd |
publishDate |
2003 |
url |
https://doi.org/10.1016/S0967-0645(03)00071-7 http://ecite.utas.edu.au/28235 |
long_lat |
ENVELOPE(148.000,148.000,-68.500,-68.500) |
geographic |
East Antarctica George V Land |
geographic_facet |
East Antarctica George V Land |
genre |
Antarc* Antarctica East Antarctica George V Land |
genre_facet |
Antarc* Antarctica East Antarctica George V Land |
op_relation |
http://dx.doi.org/10.1016/S0967-0645(03)00071-7 Beaman, RJ and Harris, PT, Seafloor morphology and acoustic facies of the George V Land shelf, Deep Sea Research Part II: Topical Studies in Oceanography, 50, (8-9) pp. 1343-1355. ISSN 0967-0645 (2003) [Refereed Article] http://ecite.utas.edu.au/28235 |
op_doi |
https://doi.org/10.1016/S0967-0645(03)00071-7 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
50 |
container_issue |
8-9 |
container_start_page |
1343 |
op_container_end_page |
1355 |
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1766274767210414080 |