Gulf of Alaska Acoustic-Trawl Survey of Walleye Pollock (DY1307, EK60)

Metadata Updated: February 8, 2018

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.

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Dates

Metadata Date May 30, 2017
Metadata Created Date September 5, 2016
Metadata Updated Date February 8, 2018
Reference Date(s) June 8, 2013 (creation)
Frequency Of Update notPlanned

Metadata Source

Harvested from NOAA CSW Harvest Source

Additional Metadata

Resource Type Series
Metadata Date May 30, 2017
Metadata Created Date September 5, 2016
Metadata Updated Date February 8, 2018
Reference Date(s) June 8, 2013 (creation)
Responsible Party DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center (Principal Investigator)
Contact Email
Access Constraints Cite as: Alaska Fisheries Science Center (2013): Water Column Sonar Data Collection (DY1307, EK60). National Centers for Environmental Information, NOAA. doi:10.7289/V5Z31WM1 [access date], Resource may not be available for up to one year after initial collection.
Bbox East Long -139.66058053364
Bbox North Lat 61.1178420411987
Bbox South Lat 52.366153350588
Bbox West Long -170.10467
Coupled Resource
Frequency Of Update notPlanned
Guid gov.noaa.ngdc.mgg.wcd:DY1307_EK60
Harvest Object Id f483507f-1b84-4340-b040-e5d737a8b3fb
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, 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., 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 Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System urn:ogc:def:crs:EPSG:4326
Spatial Harvester True
Temporal Extent Begin 2013-06-08T19:18:01
Temporal Extent End 2013-08-09T00:00:00

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