gov.noaa.nmfs.inport:22012 eng UTF8 dataset Binary Alaska Fisheries Science Center 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 0700-1700 Pacific Time resourceProvider 2025-05-15T19:16:02 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) AFSC/RACE/MACE: Results of 2008 pollock acoustic trawl survey Shelikof DY0803 2008 pollock acoustic trawl survey Shelikof DY0803 2008 publication NOAA/NMFS/EDM 22012 https://www.fisheries.noaa.gov/inport/item/22012 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Guttormsen, Mike mike.guttormsen@noaa.gov originator https://www.afsc.noaa.gov/Publications/ProcRpt/PR2008-10.pdf WWW:LINK-1.0-http--link Citation URL Citation: Online Linkage download Scientists from the Midwater Assessment and Conservation Engineering (MACE) Program of the Alaska Fisheries Science Center's (AFSC) Resource Assessment and Conservation Engineering (RACE) Division routinely conduct echo integration-trawl (EIT) stock assessment surveys in the Gulf of Alaska (GOA) during late winter and early spring to estimate the distribution and abundance of walleye pollock (Theragra chalcogramma). Most of these efforts have been focused on the Shelikof Strait area, which has been surveyed annually since 1980, except in 1982 and 1999. Surveys were also conducted in the Shumagin Islands area in 1994-96, 2001-03, and 2005-07 and along the GOA continental shelf break east of Chirikof Island to Barnabas Trench in 2002-07. This report presents the distribution and abundance of walleye pollock for surveys conducted in the GOA during February and March 2008. This report presents the distribution and abundance of walleye pollock for surveys conducted in the GOA during February and March 2008. completed Guttormsen, Mike mike.guttormsen@noaa.gov pointOfContact Towler, Rick rick.towler@noaa.gov custodian asNeeded Shumagin Islands, Sanak Trough, Shelikof Strait,Shelf Break from Chirikof Island to Barnabas Trough, Shelf Break from Barnabas Trough to Middleton Island, Alaska, Gulf of Alaska, Western Gulf of Alaska, Central Gulf of Alaska, Semidi Islands, place Geographic Names Information System acoustics, echo integration-trawl (EIT), Theragra chalcogramma, Walleye pollock, stock assessment, distribution, abundance, survey, theme Winter Survey temporal Shumagin Islands transects: between 75-220m depth The GOA shelf break survey transects: between 200 and 1,000 m depth The Sanak Trough survey transects: between 50-165m depth The Shelikof Strait sea valley survey transects: between 100-340m depth stratum DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian AFSC/RACE/MACE: Pollock Acoustic/Trawl Survey Spawning Annual Shelikof project InPort otherRestrictions Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/RACE/MACE: Results of 2008 pollock acoustic trawl survey Shelikof DY0803 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/22012. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None. otherRestrictions Use Constraints: User must read and fully comprehend the metadata prior to use. User must acknowledge the Originator when using the data set as a source. User must share data products developed using the source data set with the Originator. Data should not be used beyond the limits of the source scale. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 22012 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/22012.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US oceans Western Gulf of Alaska: Shumagin Islands and Sanak Trough (Cruise MF2008-01, DY2008-01) and Central GOA in the Shelikof Strait area and along the GOA shelf break from Chirikof Island to Middleton Island Gulf of Alaska: http://www.marineregions.org/gazetteer.php?p=details&id=4312 | Currentness: Ground Condition 2008 2009 dataset Acoustic data were recorded at the five split-beam frequencies using ER60 software and, as a backup, acoustic telegram data were logged with Myriax EchoLog 500 software. Acoustic measurements were collected from 16 m below the sea surface to within 0.5 m of the sounder-detected bottom or a maximum of 1,000 m in deep water. Data were analyzed using Myriax Echoview post-processing software. See National Marine Fisheries Service (NMFS) 2013. NOAA protocols for fisheries acoustics surveys and related sampling (Alaska Fisheries Science Center), 23 p. Prepared by Midwater Assessment and Conservation Engineering Program, Alaska Fish. Sci. Center, Natl. Mar. Fish. Serv., NOAA. Available online: http://www.afsc.noaa.gov/RACE/midwater/AFSC%20AT%20Survey%20Protocols_Feb%202013.pdf