High‐resolution multibeam sonar bathymetry of the deepest place in each ocean
Over the course of 10 months, the global Five Deeps Expedition (2018–2019) mapped ~550,000 km2 of seafloor of which 61% comprised new coverage over areas never before surveyed and ~30% was acquired from some of the ocean's deepest trenches and fracture zones. The deepest points of each ocean we...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/530930/ https://nora.nerc.ac.uk/id/eprint/530930/1/Geoscience%20Data%20Journal%20-%202021%20-%20Bongiovanni%20-%20High%E2%80%90resolution%20multibeam%20sonar%20bathymetry%20of%20the%20deepest%20place%20in%20each.pdf https://doi.org/10.1002/gdj3.122 |
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ftnerc:oai:nora.nerc.ac.uk:530930 2023-05-15T13:41:46+02:00 High‐resolution multibeam sonar bathymetry of the deepest place in each ocean Bongiovanni, Cassandra Stewart, Heather A. Jamieson, Alan J. 2022-06 text http://nora.nerc.ac.uk/id/eprint/530930/ https://nora.nerc.ac.uk/id/eprint/530930/1/Geoscience%20Data%20Journal%20-%202021%20-%20Bongiovanni%20-%20High%E2%80%90resolution%20multibeam%20sonar%20bathymetry%20of%20the%20deepest%20place%20in%20each.pdf https://doi.org/10.1002/gdj3.122 en eng Wiley https://nora.nerc.ac.uk/id/eprint/530930/1/Geoscience%20Data%20Journal%20-%202021%20-%20Bongiovanni%20-%20High%E2%80%90resolution%20multibeam%20sonar%20bathymetry%20of%20the%20deepest%20place%20in%20each.pdf Bongiovanni, Cassandra; Stewart, Heather A.; Jamieson, Alan J. 2022 High‐resolution multibeam sonar bathymetry of the deepest place in each ocean. Geoscience Data Journal, 9 (1). 108-123. https://doi.org/10.1002/gdj3.122 <https://doi.org/10.1002/gdj3.122> cc_by_4 CC-BY Publication - Article PeerReviewed 2022 ftnerc https://doi.org/10.1002/gdj3.122 2023-02-04T19:52:28Z Over the course of 10 months, the global Five Deeps Expedition (2018–2019) mapped ~550,000 km2 of seafloor of which 61% comprised new coverage over areas never before surveyed and ~30% was acquired from some of the ocean's deepest trenches and fracture zones. The deepest points of each ocean were mapped using a latest-generation, full-ocean depth Kongsberg EM 124 multibeam echosounder. These extreme depths were corrected using Conductivity, Temperature and Depth (CTD) data from sea surface to full ocean depth. The deepest place in each ocean were identified as the Brownson Deep, Puerto Rico Trench in the Atlantic Ocean (8,378 ± 5 m), an unnamed deep within the South Sandwich Trench in the Southern Ocean (7,432 ± 13 m), an unnamed deep within the Java Trench in the Indian Ocean (7,187 ± 13 m), Challenger Deep within the Mariana Trench in the Pacific Ocean (10,924 ± 15 m), and the Molloy Hole in the Arctic Ocean (5,551 ± 14 m). As part of the overarching mission of the Five Deeps Expedition, and to clarify beyond doubt the deepest point in the Indian, Pacific and Southern oceans, other sites were visited that had been postulated as potential deepest locations. This study has confirmed that the Horizon Deep within the Tonga Trench is the second deepest point in the Pacific Ocean (10,816 ± 16 m), the Dordrecht Deep within the Diamantina Fracture Zone is not the deepest point in the Indian Ocean (7,019 ± 17 m) and that in accordance with the guidelines of the Antarctic Treaty and International Hydrographic Organisation, although the Meteor Deep is the deepest point in the South Sandwich Trench (8,265 ± 13 m) it is located within the waters of the Atlantic Ocean and not the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Arctic Arctic Ocean Southern Ocean Natural Environment Research Council: NERC Open Research Archive Arctic Antarctic Southern Ocean The Antarctic Arctic Ocean Pacific Indian Tonga ENVELOPE(7.990,7.990,63.065,63.065) Kongsberg ENVELOPE(19.082,19.082,69.123,69.123) Molloy ENVELOPE(70.065,70.065,-49.360,-49.360) South Sandwich Trench ENVELOPE(-25.000,-25.000,-56.500,-56.500) Molloy Hole ENVELOPE(2.817,2.817,79.137,79.137) Geoscience Data Journal 9 1 108 123 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Over the course of 10 months, the global Five Deeps Expedition (2018–2019) mapped ~550,000 km2 of seafloor of which 61% comprised new coverage over areas never before surveyed and ~30% was acquired from some of the ocean's deepest trenches and fracture zones. The deepest points of each ocean were mapped using a latest-generation, full-ocean depth Kongsberg EM 124 multibeam echosounder. These extreme depths were corrected using Conductivity, Temperature and Depth (CTD) data from sea surface to full ocean depth. The deepest place in each ocean were identified as the Brownson Deep, Puerto Rico Trench in the Atlantic Ocean (8,378 ± 5 m), an unnamed deep within the South Sandwich Trench in the Southern Ocean (7,432 ± 13 m), an unnamed deep within the Java Trench in the Indian Ocean (7,187 ± 13 m), Challenger Deep within the Mariana Trench in the Pacific Ocean (10,924 ± 15 m), and the Molloy Hole in the Arctic Ocean (5,551 ± 14 m). As part of the overarching mission of the Five Deeps Expedition, and to clarify beyond doubt the deepest point in the Indian, Pacific and Southern oceans, other sites were visited that had been postulated as potential deepest locations. This study has confirmed that the Horizon Deep within the Tonga Trench is the second deepest point in the Pacific Ocean (10,816 ± 16 m), the Dordrecht Deep within the Diamantina Fracture Zone is not the deepest point in the Indian Ocean (7,019 ± 17 m) and that in accordance with the guidelines of the Antarctic Treaty and International Hydrographic Organisation, although the Meteor Deep is the deepest point in the South Sandwich Trench (8,265 ± 13 m) it is located within the waters of the Atlantic Ocean and not the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Bongiovanni, Cassandra Stewart, Heather A. Jamieson, Alan J. |
spellingShingle |
Bongiovanni, Cassandra Stewart, Heather A. Jamieson, Alan J. High‐resolution multibeam sonar bathymetry of the deepest place in each ocean |
author_facet |
Bongiovanni, Cassandra Stewart, Heather A. Jamieson, Alan J. |
author_sort |
Bongiovanni, Cassandra |
title |
High‐resolution multibeam sonar bathymetry of the deepest place in each ocean |
title_short |
High‐resolution multibeam sonar bathymetry of the deepest place in each ocean |
title_full |
High‐resolution multibeam sonar bathymetry of the deepest place in each ocean |
title_fullStr |
High‐resolution multibeam sonar bathymetry of the deepest place in each ocean |
title_full_unstemmed |
High‐resolution multibeam sonar bathymetry of the deepest place in each ocean |
title_sort |
high‐resolution multibeam sonar bathymetry of the deepest place in each ocean |
publisher |
Wiley |
publishDate |
2022 |
url |
http://nora.nerc.ac.uk/id/eprint/530930/ https://nora.nerc.ac.uk/id/eprint/530930/1/Geoscience%20Data%20Journal%20-%202021%20-%20Bongiovanni%20-%20High%E2%80%90resolution%20multibeam%20sonar%20bathymetry%20of%20the%20deepest%20place%20in%20each.pdf https://doi.org/10.1002/gdj3.122 |
long_lat |
ENVELOPE(7.990,7.990,63.065,63.065) ENVELOPE(19.082,19.082,69.123,69.123) ENVELOPE(70.065,70.065,-49.360,-49.360) ENVELOPE(-25.000,-25.000,-56.500,-56.500) ENVELOPE(2.817,2.817,79.137,79.137) |
geographic |
Arctic Antarctic Southern Ocean The Antarctic Arctic Ocean Pacific Indian Tonga Kongsberg Molloy South Sandwich Trench Molloy Hole |
geographic_facet |
Arctic Antarctic Southern Ocean The Antarctic Arctic Ocean Pacific Indian Tonga Kongsberg Molloy South Sandwich Trench Molloy Hole |
genre |
Antarc* Antarctic Arctic Arctic Ocean Southern Ocean |
genre_facet |
Antarc* Antarctic Arctic Arctic Ocean Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/530930/1/Geoscience%20Data%20Journal%20-%202021%20-%20Bongiovanni%20-%20High%E2%80%90resolution%20multibeam%20sonar%20bathymetry%20of%20the%20deepest%20place%20in%20each.pdf Bongiovanni, Cassandra; Stewart, Heather A.; Jamieson, Alan J. 2022 High‐resolution multibeam sonar bathymetry of the deepest place in each ocean. Geoscience Data Journal, 9 (1). 108-123. https://doi.org/10.1002/gdj3.122 <https://doi.org/10.1002/gdj3.122> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/gdj3.122 |
container_title |
Geoscience Data Journal |
container_volume |
9 |
container_issue |
1 |
container_start_page |
108 |
op_container_end_page |
123 |
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1766157570066612224 |