Geomorphology of the South Sandwich Trench: escarpments, seamounts and deeps
The Five Deeps Expedition acquired multibeam bathymetry data in the South Sandwich Trench using a latest-generation, full-ocean depth, Kongsberg EM124 multibeam echosounder. Prior to this fieldwork campaign, little high-resolution bathymetric data were available to underpin a range of marine biodive...
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ftnerc:oai:nora.nerc.ac.uk:528794 2023-05-15T18:23:34+02:00 Geomorphology of the South Sandwich Trench: escarpments, seamounts and deeps Stewart, Heather Dove, Dayton Bongiovanni, Cassie Jamieson, Alan 2020-06-04 text http://nora.nerc.ac.uk/id/eprint/528794/ https://nora.nerc.ac.uk/id/eprint/528794/1/4thJune2020-BGSDarwinSST-Geomorphology-BAS-Seminar.pdf en eng https://nora.nerc.ac.uk/id/eprint/528794/1/4thJune2020-BGSDarwinSST-Geomorphology-BAS-Seminar.pdf Stewart, Heather orcid:0000-0002-5590-6972 Dove, Dayton; Bongiovanni, Cassie; Jamieson, Alan. 2020 Geomorphology of the South Sandwich Trench: escarpments, seamounts and deeps. [Lecture] In: British Antarctic Survey Ecosystems South Sandwich Islands Seminar Series, Online, 4th June 2020. Edinburgh, UK. (Unpublished) Earth Sciences Marine Sciences Publication - Conference Item NonPeerReviewed 2020 ftnerc 2023-02-04T19:51:14Z The Five Deeps Expedition acquired multibeam bathymetry data in the South Sandwich Trench using a latest-generation, full-ocean depth, Kongsberg EM124 multibeam echosounder. Prior to this fieldwork campaign, little high-resolution bathymetric data were available to underpin a range of marine biodiversity and geodiversity research for better-informed management of the deepest reaches of the South Georgia and South Sandwich Islands Marine Protected Area. The resulting map, covering a ~15,000 km2 area, is based on a combination of semi-automated techniques and expert interpretation of geomorphological features. This work presents the first detailed mapping of the South Sandwich Trench, revealing previously known seamounts and ridge complexes, sedimentary basins, and prevalent step-like escarpments. Smaller scale terraces and submarine landslide scars have also been mapped in detail. Geological and geomorphological interpretation and map production was funded by a grant awarded through the Darwin Initiative funded by the UK Government: Hadal Zones of our Overseas Territories (DPLUS093). doi:10.13140/RG.2.2.31975.27048 Text South Sandwich Islands Natural Environment Research Council: NERC Open Research Archive Sandwich Islands South Sandwich Islands Kongsberg ENVELOPE(19.082,19.082,69.123,69.123) South Sandwich Trench ENVELOPE(-25.000,-25.000,-56.500,-56.500) |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
topic |
Earth Sciences Marine Sciences |
spellingShingle |
Earth Sciences Marine Sciences Stewart, Heather Dove, Dayton Bongiovanni, Cassie Jamieson, Alan Geomorphology of the South Sandwich Trench: escarpments, seamounts and deeps |
topic_facet |
Earth Sciences Marine Sciences |
description |
The Five Deeps Expedition acquired multibeam bathymetry data in the South Sandwich Trench using a latest-generation, full-ocean depth, Kongsberg EM124 multibeam echosounder. Prior to this fieldwork campaign, little high-resolution bathymetric data were available to underpin a range of marine biodiversity and geodiversity research for better-informed management of the deepest reaches of the South Georgia and South Sandwich Islands Marine Protected Area. The resulting map, covering a ~15,000 km2 area, is based on a combination of semi-automated techniques and expert interpretation of geomorphological features. This work presents the first detailed mapping of the South Sandwich Trench, revealing previously known seamounts and ridge complexes, sedimentary basins, and prevalent step-like escarpments. Smaller scale terraces and submarine landslide scars have also been mapped in detail. Geological and geomorphological interpretation and map production was funded by a grant awarded through the Darwin Initiative funded by the UK Government: Hadal Zones of our Overseas Territories (DPLUS093). doi:10.13140/RG.2.2.31975.27048 |
format |
Text |
author |
Stewart, Heather Dove, Dayton Bongiovanni, Cassie Jamieson, Alan |
author_facet |
Stewart, Heather Dove, Dayton Bongiovanni, Cassie Jamieson, Alan |
author_sort |
Stewart, Heather |
title |
Geomorphology of the South Sandwich Trench: escarpments, seamounts and deeps |
title_short |
Geomorphology of the South Sandwich Trench: escarpments, seamounts and deeps |
title_full |
Geomorphology of the South Sandwich Trench: escarpments, seamounts and deeps |
title_fullStr |
Geomorphology of the South Sandwich Trench: escarpments, seamounts and deeps |
title_full_unstemmed |
Geomorphology of the South Sandwich Trench: escarpments, seamounts and deeps |
title_sort |
geomorphology of the south sandwich trench: escarpments, seamounts and deeps |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/528794/ https://nora.nerc.ac.uk/id/eprint/528794/1/4thJune2020-BGSDarwinSST-Geomorphology-BAS-Seminar.pdf |
long_lat |
ENVELOPE(19.082,19.082,69.123,69.123) ENVELOPE(-25.000,-25.000,-56.500,-56.500) |
geographic |
Sandwich Islands South Sandwich Islands Kongsberg South Sandwich Trench |
geographic_facet |
Sandwich Islands South Sandwich Islands Kongsberg South Sandwich Trench |
genre |
South Sandwich Islands |
genre_facet |
South Sandwich Islands |
op_relation |
https://nora.nerc.ac.uk/id/eprint/528794/1/4thJune2020-BGSDarwinSST-Geomorphology-BAS-Seminar.pdf Stewart, Heather orcid:0000-0002-5590-6972 Dove, Dayton; Bongiovanni, Cassie; Jamieson, Alan. 2020 Geomorphology of the South Sandwich Trench: escarpments, seamounts and deeps. [Lecture] In: British Antarctic Survey Ecosystems South Sandwich Islands Seminar Series, Online, 4th June 2020. Edinburgh, UK. (Unpublished) |
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1766203585000898560 |