28314
AFSC/RACE/MACE: Results of 2014 Pollock Acoustic-Trawl Survey Shelikof- DY1403
2014 Pollock Acoustic-Trawl Survey Shelikof- DY1403
Data Set
Published / External
28144
AFSC/RACE/MACE: Pollock Acoustic/Trawl Survey Spawning Annual Shelikof
Project
Completed
The Midwater Assessment and Conservation Engineering (MACE) Program of the Alaska Fisheries Science Center's (AFSC) Resource Assessment and Conservation Engineering (RACE) Division conducts annual acoustic-trawl (AT) stock assessment surveys in the Gulf of Alaska (GOA) during late winter and early spring to estimate the distribution and abundance of walleye pollock (Gadus chalcogrammus). Historically, most of these efforts have been focused on the Shelikof Strait area, which has been surveyed annually since 1981, except in 1982, when no survey was scheduled, and in 1999 and 2011, when all winter GOA surveys were cancelled due to vessel delays. The Shumagin Islands area has been surveyed annually since 2001 (except in 2004 and 2011) with prior surveys in 1994-1996. Sanak Trough has been surveyed annually since 2002 (except in 2004 and 2011), and the GOA continental shelf break east of Chirikof Island to Barnabas Trough has been surveyed annually since 2002 (except in 2011). Marmot Bay has been surveyed in the winter six times (1989, 1990, 1992, 2007, 2009, and 2010). This report presents the results from AT surveys conducted in the aforementioned areas of the GOA during February and March 2014.
McCARTHY, A. L., S. C. STEINESSEN, and D. JONES.
2015. Results of the acoustic-trawl surveys of walleye pollock (Gadus chalcogrammus) in the Gulf of Alaska, February-March 2014 (DY2014-01 and DY2014-0). AFSC Processed Rep. 2015-05, 85 p. Alaska Fish. Sci. Cent., NOAA, Natl. Mar. Fish. Serv., 7600 Sand Point Way NE, Seattle WA 98115
Alaska Fisheries Science Center
Seattle
WA
USA
Data Set
Binary
As Needed
Simrad RAW file format
Simrad EK60
NOAA Ship Oscar Dyson
Aleutian Wing 30/26 Trawl (AWT); twice modified Marinovich midwater trawl; poly Nor’eastern (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
2015-10-29
Person
Towler, Rick
rick.towler@noaa.gov
Distributor
2015-10-29
Organization
Alaska Fisheries Science Center
AFSC
afsc.webmaster@noaa.gov
7600 Sand Point Way N.E., Building 4
Seattle
WA
98115
USA
(206) 526-4000
(206) 526-4004
https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center
AKFSC Home Page
Online Resource
0700-1700 Pacific Time
Metadata Contact
2015-10-29
Person
McCarthy, Abigail
abigail.mccarthy@noaa.gov
Point of Contact
2015-10-30
Person
McCarthy, Abigail
abigail.mccarthy@noaa.gov
Ground Condition
Gulf of Alaska: http://www.marineregions.org/gazetteer.php?p=details&id=4312
Range
2014
2015
Unclassified
Go to https://www.ngdc.noaa.gov/mgg/wcd/ or email Anderson, Charles (charles.anderson@noaa.gov)
None.
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/V5J964BK
http://www.afsc.noaa.gov/Publications/ProcRpt/PR2015-05.pdf
Online Resource
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
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 (v. 2.2.1) and, as a backup, acoustic telegram data were logged with Myriax EchoLog 500 (v.4.70.1.14256) 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 (V. 5.4.90.23788).
1 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:28314
Abigail McCarthy
2015-10-28T19:05:11
SysAdmin InPortAdmin
2024-01-15T12:08:04
2016-05-18
Alaska Fisheries Science Center
AFSC
7600 Sand Point Way N.E., Building 4
Seattle
WA
98115
USA
http://www.afsc.noaa.gov
0700-1700 Pacific Time
1001
Public
No
2016-05-18
1 Year
2017-05-18