8c64e505-98e1-482b-a82d-7a27ab2d63d1 eng; CAN Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca 2022-04-08T13:00:54 North American Profile of ISO 19115:2003 2009-01-01 https://www.polardata.ca/pdcsearch/PDCSearchDOI.jsp?doi_id=10538 Acoustic data in the eastern Canadian Arctic and Subarctic: 2005-2013 2014-03-14 Louis Fortier Maxime Geoffroy Dominique Robert Yvan Simard Fortier et al., unpublished data The data set is composed of raw files recorded with a SIMRAD EK60 three-frequency split-beam echosounder that was operated continuously during the annual ArcticNet (2005-2013) sampling expeditions in the Canadian Arctic and Subarctic aboard the CCGS Amundsen. Three 7° transducers were hull-mounted, two in oil-filled arctic wells protected by a 2.5 cm thick acoustically transparent polycarbonate plate (38 and 120 kHz) and one in a Traveocean piston well in direct contact with water (200 kHz). The acoustic signal was recorded continuously on a PC using ER60 software version 2.0.0. Ping interval was set at 2 or 3 s and the pulse length was set at 1.024 ms. Arctic cod is the most abundant and dominant fish in Arctic marine food web, transferring the energy from zooplankton to top predators. In the eastern Canadian Arctic and Subarctic, 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. The purpose of this study is to estimate Arctic cod's biomass distribution and describe cod behavior from acoustic backscatter data collected in the eastern Canadian Arctic and Subarctic. Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca polardata.ca http https://metadata.arice-h2020.eu/geonetwork/srv/api/records/8c64e505-98e1-482b-a82d-7a27ab2d63d1/attachments/map.png Acoustic Arctic cod Baffin Bay Biomass Fishes Hudson Bay Labrador Sea ice Polar Data Catalogue Thesaurus (Canada) 2021-06-02 Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca polardata.ca http https://www.polardata.ca/pdcinput/public/keywordlibrary Baffin Bay, Labrador fjords and coast, Hudson Bay Terms of Use of the Polar Data Catalogue: https://www.polardata.ca/pdcinput/public/termsofuse eng; CAN environment -94.73 -52 47.75 82.5833 Time period can be either covered by the content of the dataset or the date when the data has been collected. 2005-08-07 2013-10-06 Summary: Not Applicable Research Program(s): ArcticNet,IPY,CBMP/CAFF - Marine. For further information: Louis.Fortier@bio.ulaval.ca false Digital file 1.0 Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca This metadata was generated from the PDC metadata database at 2021-06-02 Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca