EK60 Water Column Sonar Data Collected During DY1307

Description

Gulf of Alaska Acoustic-Trawl Survey of Walleye Pollock (DY1307, EK60). The Midwater Assessment and Conservation Engineering (MACE) program of NOAA National Marine Fisheries Service (NMFS), Alaska Fisheries Science Center (AFSC) conducted acoustic-trawl (AT) stock assessment surveys during the late spring/early summer of 2013 in the Gulf of Alaska to estimate the distribution and abundance of walleye pollock (Gadus chalcogrammus). The survey was conducted on the Gulf of Alaska shelf extending from the Islands of Four Mountains to Yakutat Bay, 8 June to 9 August 2013, in three legs (leg 1, 8-26 June; leg 2, 30 June to 18 July; leg 3, 22 July to 9 August) aboard NOAA Ship Oscar Dyson, a 64 meter stern trawler equipped with acoustic and oceanographic instrumentation. The vessel departed Dutch Harbor, Alaska on 9 June with intermediate port calls in Kodiak, Alaska. Smaller surveys were also conducted in several bays and around islands including Sanak Trough (15 June), Morzhovoi Bay (15 June), Pavlof Bay (16 June), the Shumagin Islands area (including Renshaw Point, Unga Strait, and West Nagai Strait; 19-23 June), Mitrofania Island (22-23 June), Nakchamik Island (24-25 June), Shelikof Strait (1-7 July), Alitak Bay (9-10 July), Barnabas Trough (11-14 July), Chiniak Trough (14-16 July), Marmot Bay (16-17 July), Prince William Sound (29 July to 1 August), Kayak Island Trough (3-4 August), and Yakutat Trough (5-7 August). The cruise ended when the vessel arrived in Kodiak, Alaska on 9 August 2013.

Resources

Name Format Description Link
0 Web page containing information on the water column sonar data archive. https://www.ngdc.noaa.gov/mgg/wcd/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Interactive map viewer to allow discovery and access to water column sonar data https://www.ncei.noaa.gov/maps/water-column-sonar/index.html?surveys=DY1307&instruments=EK60
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
33 Publication of Sea Areas is maintained by IHO. http://www.iho-ohi.net/iho_pubs/standard/S-23/S23_1953.pdf
0 AWS Cloud Storage provides additional public access to water column sonar data through the NOAA Big Data Project https://registry.opendata.aws/ncei-wcsd-archive/
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords

Tags

  • water column
  • vertical location
  • acoustic scattering
  • water column mapping system
  • benthic
  • ecosystems
  • nesdis
  • biosphere
  • bathymetry
  • in situ/laboratory instruments
  • oceans
  • national geophysical data center
  • noaa
  • marine ecosystems
  • aquatic sciences
  • gulf of alaska
  • u.s. department of commerce
  • profilers/sounders
  • earth science
  • acoustic sounders
  • national marine fisheries service
  • doc/noaa/nesdis/ngdc
  • bathymetry/seafloor topography
  • aquatic ecosystems
  • doc/noaa/nesdis/ncei
  • fisheries
  • doc/noaa/nmfs
  • pelagic
  • wcms
  • seafloor topography
  • national centers for environmental information
  • ocean acoustics

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