A biological acoustic survey in the marginal ice-edge zone of the Bellingshausen Sea
An acoustic survey at 38 kHz was carried out from R.R.S. Discovery in the Bellingshausen Sea from 23 November to 7 December 1992 as part of the U.K. Joint Global Ocean Flux Study (JGOFS) Southern Ocean investigations [Turner D. and N. J. P. Owens (1995) Deep-Sea Research II, 42, 907–932]. A total of...
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ftnerc:oai:nora.nerc.ac.uk:515755 2023-05-15T15:41:23+02:00 A biological acoustic survey in the marginal ice-edge zone of the Bellingshausen Sea Murray, Alistair W.A. Watkins, Jonathan L. Bone, Douglas G. 1995 http://nora.nerc.ac.uk/id/eprint/515755/ https://doi.org/10.1016/0967-0645(95)00059-Y unknown Elsevier Murray, Alistair W.A.; Watkins, Jonathan L.; Bone, Douglas G. 1995 A biological acoustic survey in the marginal ice-edge zone of the Bellingshausen Sea. Deep Sea Research Part II: Topical Studies in Oceanography, 42 (4-5). 1159-1175. https://doi.org/10.1016/0967-0645(95)00059-Y <https://doi.org/10.1016/0967-0645(95)00059-Y> Publication - Article PeerReviewed 1995 ftnerc https://doi.org/10.1016/0967-0645(95)00059-Y 2023-02-04T19:44:13Z An acoustic survey at 38 kHz was carried out from R.R.S. Discovery in the Bellingshausen Sea from 23 November to 7 December 1992 as part of the U.K. Joint Global Ocean Flux Study (JGOFS) Southern Ocean investigations [Turner D. and N. J. P. Owens (1995) Deep-Sea Research II, 42, 907–932]. A total of 285 targets were identified and described from the chart record of the echo sounder. Mean volume backscattering strength data were collected using an echo integration system. These data are used to describe the spatial and temporal variability of krill (Euphausia superba) distribution and biomass in the marginal ice-edge zone. Krill biomass density varied from a mean of 42 g m−2 during the first survey phase to 20 g m−2 on the second survey phase. The number of small swarms detected during the second phase was greater than during the first phase. On this first survey a large swarm (2.8 km in extent) had a potential biomass of 3.7 × 104 tonnes. Some calculations are presented to show the potential impact of krill on the flux of carbon in the area of the survey. Article in Journal/Newspaper Bellingshausen Sea Euphausia superba Southern Ocean Natural Environment Research Council: NERC Open Research Archive Bellingshausen Sea Southern Ocean Deep Sea Research Part II: Topical Studies in Oceanography 42 4-5 1159 1175 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
An acoustic survey at 38 kHz was carried out from R.R.S. Discovery in the Bellingshausen Sea from 23 November to 7 December 1992 as part of the U.K. Joint Global Ocean Flux Study (JGOFS) Southern Ocean investigations [Turner D. and N. J. P. Owens (1995) Deep-Sea Research II, 42, 907–932]. A total of 285 targets were identified and described from the chart record of the echo sounder. Mean volume backscattering strength data were collected using an echo integration system. These data are used to describe the spatial and temporal variability of krill (Euphausia superba) distribution and biomass in the marginal ice-edge zone. Krill biomass density varied from a mean of 42 g m−2 during the first survey phase to 20 g m−2 on the second survey phase. The number of small swarms detected during the second phase was greater than during the first phase. On this first survey a large swarm (2.8 km in extent) had a potential biomass of 3.7 × 104 tonnes. Some calculations are presented to show the potential impact of krill on the flux of carbon in the area of the survey. |
format |
Article in Journal/Newspaper |
author |
Murray, Alistair W.A. Watkins, Jonathan L. Bone, Douglas G. |
spellingShingle |
Murray, Alistair W.A. Watkins, Jonathan L. Bone, Douglas G. A biological acoustic survey in the marginal ice-edge zone of the Bellingshausen Sea |
author_facet |
Murray, Alistair W.A. Watkins, Jonathan L. Bone, Douglas G. |
author_sort |
Murray, Alistair W.A. |
title |
A biological acoustic survey in the marginal ice-edge zone of the Bellingshausen Sea |
title_short |
A biological acoustic survey in the marginal ice-edge zone of the Bellingshausen Sea |
title_full |
A biological acoustic survey in the marginal ice-edge zone of the Bellingshausen Sea |
title_fullStr |
A biological acoustic survey in the marginal ice-edge zone of the Bellingshausen Sea |
title_full_unstemmed |
A biological acoustic survey in the marginal ice-edge zone of the Bellingshausen Sea |
title_sort |
biological acoustic survey in the marginal ice-edge zone of the bellingshausen sea |
publisher |
Elsevier |
publishDate |
1995 |
url |
http://nora.nerc.ac.uk/id/eprint/515755/ https://doi.org/10.1016/0967-0645(95)00059-Y |
geographic |
Bellingshausen Sea Southern Ocean |
geographic_facet |
Bellingshausen Sea Southern Ocean |
genre |
Bellingshausen Sea Euphausia superba Southern Ocean |
genre_facet |
Bellingshausen Sea Euphausia superba Southern Ocean |
op_relation |
Murray, Alistair W.A.; Watkins, Jonathan L.; Bone, Douglas G. 1995 A biological acoustic survey in the marginal ice-edge zone of the Bellingshausen Sea. Deep Sea Research Part II: Topical Studies in Oceanography, 42 (4-5). 1159-1175. https://doi.org/10.1016/0967-0645(95)00059-Y <https://doi.org/10.1016/0967-0645(95)00059-Y> |
op_doi |
https://doi.org/10.1016/0967-0645(95)00059-Y |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
42 |
container_issue |
4-5 |
container_start_page |
1159 |
op_container_end_page |
1175 |
_version_ |
1766374290219859968 |