Gulf of Alaska Acoustic-Trawl Survey of Walleye Pollock (DY1602, 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 in the Gulf of Alaska (GOA) during the winter of 2016 to estimate the distribution and abundance of walleye pollock (Gadus chalcogrammus). The Shumagin Islands survey was conducted 12-15 February and included Shumagin Trough, Stepovak Bay, Renshaw, Unga Strait, Korovin Strait, and West Nagai Strait. The Sanak Trough survey was conducted 15-16 February followed by the Morzhovoi Bay survey on 16 February. The vessel transited to Pavlov Bay 16-17 February and completed the Pavlov survey on February 17. The vessel transited to its home port 18-20 February. The survey was conducted aboard NOAA Ship Oscar Dyson, a 64 meter stern trawler equipped with acoustic and oceanographic instrumentation.

Data and Resources

Additional Info

Field Value
Last Updated August 23, 2018, 22:28
Created June 10, 2017, 18:09
access_constraints ["Cite as: Alaska Fisheries Science Center (2016): Water Column Sonar Data Collection (DY1602, EK60). National Centers for Environmental Information, NOAA. doi:10.7289/V51Z42BW [access date]", "Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.", "Resource may not be available for up to one year after initial collection."]
bbox-east-long -152.02761
bbox-north-lat 57.78347
bbox-south-lat 54.43619
bbox-west-long -163.26694
coupled-resource []
dataset-reference-date [{"type": "creation", "value": "2016-02-11"}]
frequency-of-update notPlanned
guid gov.noaa.ngdc.mgg.wcd:DY1602_EK60
licence ["These data are considered raw and have not been subjected to the NOAA's quality control or quality assurance procedures. They are released for limited public use as preliminary data to be used only with appropriate caution. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.", "Not subject to copyright protection within the United States."]
metadata-date 2018-08-09
progress completed
resource-type series
responsible-party [{"name": "DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center", "roles": ["principalInvestigator"]}]
spatial {"type": "Polygon", "coordinates": [[[-163.26694, 54.43619], [-152.02761, 54.43619], [-152.02761, 57.78347], [-163.26694, 57.78347], [-163.26694, 54.43619]]]}
spatial-reference-system urn:ogc:def:crs:EPSG:4326
spatial_harvester true
temporal-extent-begin 2016-02-11T19:45:09
temporal-extent-end 2016-02-20T00:24:07