Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea
<qd> Skaar, K. L., Jørgensen, T., Ulvestad, B. K. H., and Engås, A. 2011. Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea. – ICES Journal of Marine Science, 68: 1615–1620. </qd>The accuracy of vessel monitoring system (VMS) data...
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Oxford University Press
2011
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fthighwire:oai:open-archive.highwire.org:icesjms:68/8/1615 2023-05-15T15:38:28+02:00 Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea Skaar, K. L. Jørgensen, T. Ulvestad, B. K. H. Engås, A. 2011-09-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/68/8/1615 https://doi.org/10.1093/icesjms/fsr091 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/68/8/1615 http://dx.doi.org/10.1093/icesjms/fsr091 Copyright (C) 2011, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Short communication TEXT 2011 fthighwire https://doi.org/10.1093/icesjms/fsr091 2011-09-11T21:09:18Z <qd> Skaar, K. L., Jørgensen, T., Ulvestad, B. K. H., and Engås, A. 2011. Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea. – ICES Journal of Marine Science, 68: 1615–1620. </qd>The accuracy of vessel monitoring system (VMS) data, used to determine fishing activity in the trawl fishery for gadoids in the Barents Sea, was studied by observer notes and Global Positioning System (GPS) data from two Norwegian vessels in October 2007. A speed rule of 2–5 knots correctly classified 75–80% of the fishing activity and 85–90% of the non-fishing activity. Linear interpolation between hourly VMS recordings underestimated trawl trajectories by 15%. The median haulwise difference between the VMS and the GPS trajectories was ∼500 m. The interpolated VMS data are appropriate for mapping the large-scale distribution of fishing effort and the area impacted, but to link fishing activities with small-scale mapping of benthos, more-frequent VMS-update times and more-refined interpolation techniques are required. Text Barents Sea HighWire Press (Stanford University) Barents Sea Engås ENVELOPE(13.926,13.926,65.705,65.705) ICES Journal of Marine Science 68 8 1615 1620 |
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Open Polar |
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HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Short communication |
spellingShingle |
Short communication Skaar, K. L. Jørgensen, T. Ulvestad, B. K. H. Engås, A. Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea |
topic_facet |
Short communication |
description |
<qd> Skaar, K. L., Jørgensen, T., Ulvestad, B. K. H., and Engås, A. 2011. Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea. – ICES Journal of Marine Science, 68: 1615–1620. </qd>The accuracy of vessel monitoring system (VMS) data, used to determine fishing activity in the trawl fishery for gadoids in the Barents Sea, was studied by observer notes and Global Positioning System (GPS) data from two Norwegian vessels in October 2007. A speed rule of 2–5 knots correctly classified 75–80% of the fishing activity and 85–90% of the non-fishing activity. Linear interpolation between hourly VMS recordings underestimated trawl trajectories by 15%. The median haulwise difference between the VMS and the GPS trajectories was ∼500 m. The interpolated VMS data are appropriate for mapping the large-scale distribution of fishing effort and the area impacted, but to link fishing activities with small-scale mapping of benthos, more-frequent VMS-update times and more-refined interpolation techniques are required. |
format |
Text |
author |
Skaar, K. L. Jørgensen, T. Ulvestad, B. K. H. Engås, A. |
author_facet |
Skaar, K. L. Jørgensen, T. Ulvestad, B. K. H. Engås, A. |
author_sort |
Skaar, K. L. |
title |
Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea |
title_short |
Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea |
title_full |
Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea |
title_fullStr |
Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea |
title_full_unstemmed |
Accuracy of VMS data from Norwegian demersal stern trawlers for estimating trawled areas in the Barents Sea |
title_sort |
accuracy of vms data from norwegian demersal stern trawlers for estimating trawled areas in the barents sea |
publisher |
Oxford University Press |
publishDate |
2011 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/68/8/1615 https://doi.org/10.1093/icesjms/fsr091 |
long_lat |
ENVELOPE(13.926,13.926,65.705,65.705) |
geographic |
Barents Sea Engås |
geographic_facet |
Barents Sea Engås |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/68/8/1615 http://dx.doi.org/10.1093/icesjms/fsr091 |
op_rights |
Copyright (C) 2011, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsr091 |
container_title |
ICES Journal of Marine Science |
container_volume |
68 |
container_issue |
8 |
container_start_page |
1615 |
op_container_end_page |
1620 |
_version_ |
1766369424704536576 |