ARICE Metadata Catalogue
SX90 sonar data in Cumberland Sound: 2011
The data set is composed of raw files recorded with the Kongsberg Maritime SX90 long-range, low frequency (20-30 kHz) fisheries sonar during the CCGS Amundsen 2011 summer expedition in Cumberland Sound. The sonar was operated during a 24 hours dedicated survey on July 25th and 26th. The sonar transducer was lowered 2.5 feet below the hull through a gate-valve. The cylindrical 256-elements transducer allows both a horizontal and a vertical sound transmission, and the omni-directional sonar beam can be tilted from +10 to -60 degrees to scan a large portion of the water column. The raw acoustic data were saved onto an external drive and print screens of interesting targets (fish schools and/or marine mammals) were recorded.
Simple
- Date (Publication)
- 2012-03-28
- Other citation details
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Maxime Geoffroy, unpublished
- Purpose
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Arctic cod is the most abundant and dominant fish in Arctic marine food web, transferring the energy from zooplankton to top predators. In the Canadian Arctic, the large biomass of this key species that must exist to support predators¿ consumption estimates has eluded detection. Sampling difficulties in the harsh environment usually limit studies of Arctic cod to coastal shallow waters during summer and to the immediate under-ice water. Previous studies suggest that Arctic cod remain in the upper layer of the water column in the summer/fall; however, detecting Arctic cod in the surface waters using echosounder-based techniques has proven challenging. Here, the use of a fisheries sonar to detect fish aggregations near the surface is investigated. In addition to the larger coverage relative to that of an echosounder, fisheries sonars allow detection of fish up to 1 m below the ocean surface and at distances of up to 2 km from the vessel, thereby reducing biases related to vessel. The purpose of this study is to detect Arctic cod aggregations near the surface using the SX90 sonar, and to document their distribution, size and migration patterns.
- Status
- Completed
Canadian Cryospheric Information Network
-Polar Data Catalogue
200 University Avenue West, University of Waterloo
,Waterloo
,Ontario
,N2L 3G1
,Canada
polardata.ca
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Polar Data Catalogue Thesaurus (Canada)
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Acoustic
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Arctic cod
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Cumberland Sound
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Habitat use
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Target strength
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- Place
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Cumberland Sound
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- Access constraints
- Other restrictions
- Use constraints
- Other restrictions
- Other constraints
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Terms of Use of the Polar Data Catalogue: https://www.polardata.ca/pdcinput/public/termsofuse
- Metadata language
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eng; CAN
- Topic category
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- Environment
))
- Begin date
- 2011-07-25
- End date
- 2011-07-26
- Supplemental Information
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Summary: Not applicable Research Program(s): ArcticNet. For further information: Louis.Fortier@bio.ulaval.ca Louis.Fortier@bio.ula Summary: Not applicable Research Program(s): ArcticNet. For further information: Louis.Fortier@bio.ulaval.ca
- Distribution format
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Digital file
(1.0
)
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Canadian Cryospheric Information Network
-Polar Data Catalogue
200 University Avenue West, University of Waterloo
,Waterloo
,Ontario
,N2L 3G1
,Canada
- Included with dataset
- No
- File identifier
- 31088fb3-d5c2-4f21-a342-af2068544509 XML
- Metadata language
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eng; CAN
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2022-04-08T13:00:35
- Metadata standard name
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North American Profile of ISO 19115:2003
- Metadata standard version
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2009-01-01
Canadian Cryospheric Information Network
-Polar Data Catalogue
200 University Avenue West, University of Waterloo
,Waterloo
,Ontario
,N2L 3G1
,Canada
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