Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic
<qd> Weber, T. C., Peña, H., and Jech, J. M. 2009. Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic. – ICES Journal of Marine Science, 66: 1270–1277. </qd>Several successive images of the same school of Atlantic herring ( Clupea harengus ) were co...
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fthighwire:oai:open-archive.highwire.org:icesjms:66/6/1270 2023-05-15T17:45:27+02:00 Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic Weber, Thomas C. Peña, Héctor Jech, J. Michael 2009-07-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/66/6/1270 https://doi.org/10.1093/icesjms/fsp090 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/66/6/1270 http://dx.doi.org/10.1093/icesjms/fsp090 Copyright (C) 2009, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 2009 fthighwire https://doi.org/10.1093/icesjms/fsp090 2009-07-03T20:19:12Z <qd> Weber, T. C., Peña, H., and Jech, J. M. 2009. Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic. – ICES Journal of Marine Science, 66: 1270–1277. </qd>Several successive images of the same school of Atlantic herring ( Clupea harengus ) were collected over the course of ∼1 h just north of Georges Bank in the Northwest Atlantic. Although the fish may not have been in their natural, undisturbed state, we observed what appeared to be the fish school fragmenting and dispersing, using a split-beam and a multibeam echosounder. Calibrated, 38 kHz, split-beam echosounder (Simrad EK60) and trawl-catch data provided accurate measures of the fish density beneath the vessel. Uncalibrated, 400 kHz, multibeam-echosounder (Reson 7125) data provided synoptic observations of the fish school including estimates of the school volume, morphology, and behaviour. Observations of the angular dependence in the multibeam-echosounder measurements of backscatter from fish allow investigation of the efficacy of extrapolating fish-school densities measured by the split-beam echosounder to the entire school. Text Northwest Atlantic HighWire Press (Stanford University) ICES Journal of Marine Science 66 6 1270 1277 |
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Articles Weber, Thomas C. Peña, Héctor Jech, J. Michael Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic |
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<qd> Weber, T. C., Peña, H., and Jech, J. M. 2009. Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic. – ICES Journal of Marine Science, 66: 1270–1277. </qd>Several successive images of the same school of Atlantic herring ( Clupea harengus ) were collected over the course of ∼1 h just north of Georges Bank in the Northwest Atlantic. Although the fish may not have been in their natural, undisturbed state, we observed what appeared to be the fish school fragmenting and dispersing, using a split-beam and a multibeam echosounder. Calibrated, 38 kHz, split-beam echosounder (Simrad EK60) and trawl-catch data provided accurate measures of the fish density beneath the vessel. Uncalibrated, 400 kHz, multibeam-echosounder (Reson 7125) data provided synoptic observations of the fish school including estimates of the school volume, morphology, and behaviour. Observations of the angular dependence in the multibeam-echosounder measurements of backscatter from fish allow investigation of the efficacy of extrapolating fish-school densities measured by the split-beam echosounder to the entire school. |
format |
Text |
author |
Weber, Thomas C. Peña, Héctor Jech, J. Michael |
author_facet |
Weber, Thomas C. Peña, Héctor Jech, J. Michael |
author_sort |
Weber, Thomas C. |
title |
Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic |
title_short |
Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic |
title_full |
Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic |
title_fullStr |
Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic |
title_full_unstemmed |
Consecutive acoustic observations of an Atlantic herring school in the Northwest Atlantic |
title_sort |
consecutive acoustic observations of an atlantic herring school in the northwest atlantic |
publisher |
Oxford University Press |
publishDate |
2009 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/66/6/1270 https://doi.org/10.1093/icesjms/fsp090 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/66/6/1270 http://dx.doi.org/10.1093/icesjms/fsp090 |
op_rights |
Copyright (C) 2009, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsp090 |
container_title |
ICES Journal of Marine Science |
container_volume |
66 |
container_issue |
6 |
container_start_page |
1270 |
op_container_end_page |
1277 |
_version_ |
1766148452552540160 |