31669 2012 Bogoslof Island EIT Survey Data Set Published / External 28147 AFSC/RACE/MACE: Pollock Acoustic/Trawl Survey Spawning Biennial Bogoslof Project Scientists from the Midwater Assessment and Conservation Engineering (MACE) program of the Alaska Fisheries Science Center (AFSC) Resource Assessment and Conservation Engineering (RACE) Division conducted an acoustic-trawl (AT) survey of walleye pollock in the southeastern Aleutian Basin near Bogoslof Island aboard the NOAA ship Oscar Dyson during 7-15 March, 2012. The survey was designed with two survey tracks, which covered 3,656 nmi2 of the CBS Convention Specific Area. The primary survey track was nearest to the Aleutian Islands and consisted of 35 north-south parallel transects spaced 3 nmi apart and the second survey track was located just north of the primary survey track, and consisted of 12 north-south parallel transects space 9 nmi apart. These second survey track was essentially northern extensions of the primary survey track, designed to observe whether walleye pollock were present in deeper water. The survey followed established AT methods as specified in NOAA protocols for fisheries acoustics surveys and related sampling. Pollock Stock assessment Enter notes if applicable. Enter other citation details. Enter supplemental information if applicable. Alaska Fisheries Science Center Seattle WA USA Data Set Digital Kongsberg/Simrad EK60 NOAA Ship Oscar Dyson Aleutian Wing 30/26 Trawl (AWT); twice modified Marinovich midwater trawl; poly Noreastern (PNE) bottom trawl; Methot trawl; SBE-39, SBE-911plus, Sippican Deep Blue; 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 Data Steward 2015 Person Towler, Rick rick.towler@noaa.gov Distributor 2015 Person Anderson, Charles charles.anderson@noaa.gov 325 Broadway, E/GC3 Boulder CO 33149 303-497-4742 Originator 2014-07-31 Person McCarthy, Abigail abigail.mccarthy@noaa.gov Point of Contact 2015 Person McKelvey, Denise denise.mckelvey@noaa.gov Enter a general description of the extent, if any. -169.3647 -167.2866 53.8254 52.9528 Enter a description for the geographic extent. Range 2012-03-07 2012-03-15 Enter a description of the time frame. Unclassified Go to https://www.ngdc.noaa.gov/mgg/wcd/ or email Anderson, Charles (charles.anderson@noaa.gov) The data set is still being analyzed and will not be available for distribution until it has been finalized and all QA/QC practices have been performed. Contact the Data Point Of Contact for estimated time of release. 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. http://doi.org/10.7289/V5KP8060 https://www.ngdc.noaa.gov/mgg/wcd/ These data were collected in accordance 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 No Unknown. Yes Yes 180 If the delay between data collection and dissemination is longer than the latency of automated processing, explain under what authority data access is delayed. This field should only be included if the delay is longer than the latency of automated processing. NCEI-CO 180 IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption. 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 gov.noaa.nmfs.inport:31669 Abigail McCarthy 2016-03-23T20:21:59 SysAdmin InPortAdmin 2025-05-15T19:15:50 2016-05-18 Alaska Fisheries Science Center AFSC 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov 0700-1700 Pacific Time 1001 Public No No 2016-05-18 1 Year 2017-05-18