Interannual to diurnal variability in the near-surface scattering layer in Drake Passage
Abstract Chereskin, T. K., and Tarling, G. A. 2007. Interannual to diurnal variability in the near-surface scattering layer in Drake Passage. – ICES Journal of Marine Science, 64: 1617–1626. Backscattering strength was estimated from 127 shipboard surveys with an acoustic Doppler current profiler (A...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsm138 http://academic.oup.com/icesjms/article-pdf/64/9/1617/29129330/fsm138.pdf |
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croxfordunivpr:10.1093/icesjms/fsm138 2023-12-31T10:00:13+01:00 Interannual to diurnal variability in the near-surface scattering layer in Drake Passage Chereskin, T. K. Tarling, G. A. 2007 http://dx.doi.org/10.1093/icesjms/fsm138 http://academic.oup.com/icesjms/article-pdf/64/9/1617/29129330/fsm138.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 64, issue 9, page 1617-1626 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2007 croxfordunivpr https://doi.org/10.1093/icesjms/fsm138 2023-12-06T08:42:30Z Abstract Chereskin, T. K., and Tarling, G. A. 2007. Interannual to diurnal variability in the near-surface scattering layer in Drake Passage. – ICES Journal of Marine Science, 64: 1617–1626. Backscattering strength was estimated from 127 shipboard surveys with an acoustic Doppler current profiler (ADCP) made during Drake Passage transits from 1999 to 2004. The backscattering strength is used to determine the characteristics of the near-surface scattering layer, which south of the Southern Antarctic Circumpolar Current Front (SACCF) is dominated by Antarctic krill (Euphausia superba). Diel vertical migration in the upper 150 m was the dominant variability observed in any single transect. When averaged over depth, there was a well-defined annual cycle in backscattering strength, with a factor of four increase from a late-winter minimum to a spring-summer maximum over a period of four months, followed by a more gentle decline during late summer and autumn. In addition, there were significant differences in scattering strength north and south of the Polar Front (PF) on both seasonal and interannnual time-scales. The average summer maximum to the north of the PF was more than twice the maximum to the south, but the winter minima were about the same. On interannual time-scales, scattering strength south of the PF displayed a negative linear trend primarily attributable to a fourfold decrease in backscattering strength south of the SACCF. No significant long-term trend in the scattering strength north of the SACCF was observed. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Drake Passage Euphausia superba Oxford University Press (via Crossref) ICES Journal of Marine Science 64 9 1617 1626 |
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Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Chereskin, T. K. Tarling, G. A. Interannual to diurnal variability in the near-surface scattering layer in Drake Passage |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Chereskin, T. K., and Tarling, G. A. 2007. Interannual to diurnal variability in the near-surface scattering layer in Drake Passage. – ICES Journal of Marine Science, 64: 1617–1626. Backscattering strength was estimated from 127 shipboard surveys with an acoustic Doppler current profiler (ADCP) made during Drake Passage transits from 1999 to 2004. The backscattering strength is used to determine the characteristics of the near-surface scattering layer, which south of the Southern Antarctic Circumpolar Current Front (SACCF) is dominated by Antarctic krill (Euphausia superba). Diel vertical migration in the upper 150 m was the dominant variability observed in any single transect. When averaged over depth, there was a well-defined annual cycle in backscattering strength, with a factor of four increase from a late-winter minimum to a spring-summer maximum over a period of four months, followed by a more gentle decline during late summer and autumn. In addition, there were significant differences in scattering strength north and south of the Polar Front (PF) on both seasonal and interannnual time-scales. The average summer maximum to the north of the PF was more than twice the maximum to the south, but the winter minima were about the same. On interannual time-scales, scattering strength south of the PF displayed a negative linear trend primarily attributable to a fourfold decrease in backscattering strength south of the SACCF. No significant long-term trend in the scattering strength north of the SACCF was observed. |
format |
Article in Journal/Newspaper |
author |
Chereskin, T. K. Tarling, G. A. |
author_facet |
Chereskin, T. K. Tarling, G. A. |
author_sort |
Chereskin, T. K. |
title |
Interannual to diurnal variability in the near-surface scattering layer in Drake Passage |
title_short |
Interannual to diurnal variability in the near-surface scattering layer in Drake Passage |
title_full |
Interannual to diurnal variability in the near-surface scattering layer in Drake Passage |
title_fullStr |
Interannual to diurnal variability in the near-surface scattering layer in Drake Passage |
title_full_unstemmed |
Interannual to diurnal variability in the near-surface scattering layer in Drake Passage |
title_sort |
interannual to diurnal variability in the near-surface scattering layer in drake passage |
publisher |
Oxford University Press (OUP) |
publishDate |
2007 |
url |
http://dx.doi.org/10.1093/icesjms/fsm138 http://academic.oup.com/icesjms/article-pdf/64/9/1617/29129330/fsm138.pdf |
genre |
Antarc* Antarctic Antarctic Krill Drake Passage Euphausia superba |
genre_facet |
Antarc* Antarctic Antarctic Krill Drake Passage Euphausia superba |
op_source |
ICES Journal of Marine Science volume 64, issue 9, page 1617-1626 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsm138 |
container_title |
ICES Journal of Marine Science |
container_volume |
64 |
container_issue |
9 |
container_start_page |
1617 |
op_container_end_page |
1626 |
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1786847244529434624 |