The acoustic properties of Salpa thompsoni
Aggregations of the salp Salpa thompsoni were encountered during the Antarctic krill and ecosystem-studies cruise on the RV "G.O. Sars" from 19 February to 27 March 2008. The salp's in situ target strength (TS), size, number of individuals in aggregate chains, and chain angle of orien...
Published in: | ICES Journal of Marine Science |
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Oxford University Press (OUP)
2009
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Online Access: | http://hdl.handle.net/10754/561545 https://doi.org/10.1093/icesjms/fsp263 |
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ftkingabdullahun:oai:repository.kaust.edu.sa:10754/561545 2023-12-31T10:00:57+01:00 The acoustic properties of Salpa thompsoni Wiebe, Peter H. Chu, Dezhang Kaartvedt, Stein Hundt, Anna Melle, Webjørn Ona, Egil Batta-Lona, Paola G. Biological and Environmental Sciences and Engineering (BESE) Division Marine Science Program Biology Department, Woods Hole Oceanographic Institution, Mail Stop 33, Woods Hole, MA 02543, United States NOAA, NMFS/NWFSC, FRAM, 2725 Montlake Boulevar East, Seattle, WA 98112, United States Department of Biology, University of Oslo, PO Box 1066, Blindern, N-0316 Oslo, Norway Department of Biology, University of Bergen, PO Box 7800, 5020 Bergen, Norway Institute of Marine Research, PO Box 1870, Nordnes, 5817 Bergen, Norway University of Connecticut-Avery Point, 1080 Shennecossett Road, Groton, CT 06340, United States 2009-12-01 http://hdl.handle.net/10754/561545 https://doi.org/10.1093/icesjms/fsp263 unknown Oxford University Press (OUP) Wiebe, P. H., Chu, D., Kaartvedt, S., Hundt, A., Melle, W., Ona, E., & Batta-Lona, P. (2009). The acoustic properties of Salpa thompsoni. ICES Journal of Marine Science, 67(3), 583–593. doi:10.1093/icesjms/fsp263 doi:10.1093/icesjms/fsp263 10543139 ICES Journal of Marine Science http://hdl.handle.net/10754/561545 Acoustic detection DWBA salp backscattering model Salp in situ images Salp material properties Salp target strength Salpa thompsoni Zooplankton Article 2009 ftkingabdullahun https://doi.org/10.1093/icesjms/fsp263 2023-12-02T20:21:25Z Aggregations of the salp Salpa thompsoni were encountered during the Antarctic krill and ecosystem-studies cruise on the RV "G.O. Sars" from 19 February to 27 March 2008. The salp's in situ target strength (TS), size, number of individuals in aggregate chains, and chain angle of orientation were determined. Shipboard measurements were made of Salpa thompsoni's material properties. Individual aggregates were mostly 45.5-60.6 mm in mean length; relatively rare solitaries were ∼100 mm. Chains ranged from 3 to at least 121 individuals, and in surface waters (<20 m), they showed no preferred angle of orientation. Sound-speed contrast (h) ranged from 1.0060 to 1.0201 and density contrast (g) estimates between 1.0000 and 1.0039. The in situ TS distributions peaked between-75 and - 76 dB at 38 kHz, with a secondary peak at approximately - 65 dB. TS ranged between-85 and - 65 dB at 120 and 200 kHz and peaked around-74 dB. The measured in situ TS of salps reasonably matched the theoretical scattering-model predictions based on multi-individual chains. The backscattering from aggregate salps gives rise to TS values that can be similar to krill and other zooplankton with higher density and sound-speed contrasts. © 2009 International Council for the Exploration of the Sea. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill King Abdullah University of Science and Technology: KAUST Repository ICES Journal of Marine Science 67 3 583 593 |
institution |
Open Polar |
collection |
King Abdullah University of Science and Technology: KAUST Repository |
op_collection_id |
ftkingabdullahun |
language |
unknown |
topic |
Acoustic detection DWBA salp backscattering model Salp in situ images Salp material properties Salp target strength Salpa thompsoni Zooplankton |
spellingShingle |
Acoustic detection DWBA salp backscattering model Salp in situ images Salp material properties Salp target strength Salpa thompsoni Zooplankton Wiebe, Peter H. Chu, Dezhang Kaartvedt, Stein Hundt, Anna Melle, Webjørn Ona, Egil Batta-Lona, Paola G. The acoustic properties of Salpa thompsoni |
topic_facet |
Acoustic detection DWBA salp backscattering model Salp in situ images Salp material properties Salp target strength Salpa thompsoni Zooplankton |
description |
Aggregations of the salp Salpa thompsoni were encountered during the Antarctic krill and ecosystem-studies cruise on the RV "G.O. Sars" from 19 February to 27 March 2008. The salp's in situ target strength (TS), size, number of individuals in aggregate chains, and chain angle of orientation were determined. Shipboard measurements were made of Salpa thompsoni's material properties. Individual aggregates were mostly 45.5-60.6 mm in mean length; relatively rare solitaries were ∼100 mm. Chains ranged from 3 to at least 121 individuals, and in surface waters (<20 m), they showed no preferred angle of orientation. Sound-speed contrast (h) ranged from 1.0060 to 1.0201 and density contrast (g) estimates between 1.0000 and 1.0039. The in situ TS distributions peaked between-75 and - 76 dB at 38 kHz, with a secondary peak at approximately - 65 dB. TS ranged between-85 and - 65 dB at 120 and 200 kHz and peaked around-74 dB. The measured in situ TS of salps reasonably matched the theoretical scattering-model predictions based on multi-individual chains. The backscattering from aggregate salps gives rise to TS values that can be similar to krill and other zooplankton with higher density and sound-speed contrasts. © 2009 International Council for the Exploration of the Sea. |
author2 |
Biological and Environmental Sciences and Engineering (BESE) Division Marine Science Program Biology Department, Woods Hole Oceanographic Institution, Mail Stop 33, Woods Hole, MA 02543, United States NOAA, NMFS/NWFSC, FRAM, 2725 Montlake Boulevar East, Seattle, WA 98112, United States Department of Biology, University of Oslo, PO Box 1066, Blindern, N-0316 Oslo, Norway Department of Biology, University of Bergen, PO Box 7800, 5020 Bergen, Norway Institute of Marine Research, PO Box 1870, Nordnes, 5817 Bergen, Norway University of Connecticut-Avery Point, 1080 Shennecossett Road, Groton, CT 06340, United States |
format |
Article in Journal/Newspaper |
author |
Wiebe, Peter H. Chu, Dezhang Kaartvedt, Stein Hundt, Anna Melle, Webjørn Ona, Egil Batta-Lona, Paola G. |
author_facet |
Wiebe, Peter H. Chu, Dezhang Kaartvedt, Stein Hundt, Anna Melle, Webjørn Ona, Egil Batta-Lona, Paola G. |
author_sort |
Wiebe, Peter H. |
title |
The acoustic properties of Salpa thompsoni |
title_short |
The acoustic properties of Salpa thompsoni |
title_full |
The acoustic properties of Salpa thompsoni |
title_fullStr |
The acoustic properties of Salpa thompsoni |
title_full_unstemmed |
The acoustic properties of Salpa thompsoni |
title_sort |
acoustic properties of salpa thompsoni |
publisher |
Oxford University Press (OUP) |
publishDate |
2009 |
url |
http://hdl.handle.net/10754/561545 https://doi.org/10.1093/icesjms/fsp263 |
genre |
Antarc* Antarctic Antarctic Krill |
genre_facet |
Antarc* Antarctic Antarctic Krill |
op_relation |
Wiebe, P. H., Chu, D., Kaartvedt, S., Hundt, A., Melle, W., Ona, E., & Batta-Lona, P. (2009). The acoustic properties of Salpa thompsoni. ICES Journal of Marine Science, 67(3), 583–593. doi:10.1093/icesjms/fsp263 doi:10.1093/icesjms/fsp263 10543139 ICES Journal of Marine Science http://hdl.handle.net/10754/561545 |
op_doi |
https://doi.org/10.1093/icesjms/fsp263 |
container_title |
ICES Journal of Marine Science |
container_volume |
67 |
container_issue |
3 |
container_start_page |
583 |
op_container_end_page |
593 |
_version_ |
1786793150415634432 |