ME70 Water Column Sonar Data Collected During SH1204

Metadata Updated: November 12, 2020

The 2012 Joint U.S.-Canada Integrated Acoustic and Trawl Survey of Pacific Hake (Merluccius productus) and Pacific Sardine (Sardinops sagax) (SH1204, ME70). Scientists from the Fishery Resource Analysis and Monitoring (FRAM) division at the NOAA Fisheries Northwest Fisheries Science Center (NWFSC), the Fishery Resources Division (FRD) at the Southwest Fisheries Science Center (SWFSC), and the Pacific region of the Department of Fisheries and Oceans Canada (DFO) conducted the 2012 Integrated Acoustic Survey (IAT) survey aboard the NOAA Ship Bell M. Shimada and the Canadian Coast Guard Ship (CCGS) W.E. Ricker. Both vessels are stern trawlers equipped for fisheries and oceanographic research. The Shimada surveyed from 35.8°N to 50.8°N between June 25 and August 23, and the Ricker surveyed from 48.8°N to 55.3°N between August 15 and September 6. The industry-provided vessel the F/V Forum Star was primarily for groudtruthing activity, trawling with an Aleutian wing trawl 24/20 (AWT), and remained in the vicinity the Shimada between June 28 and August 11.

The portion of the survey conducted with the Bell M. Shimada focuses on both Pacific sardine (Sardinops sagax) and Pacific hake (Merluccius productus), a Joint U.S.-Canada Integrated Acoustic and Trawl Survey of Pacific Hake and Pacific Sardine (SaKe 2012) covered the area from the Southern California Bight (SCB), CA to north end of the Vancouver Island, Canada. The data include here are those collected on NOAA Ship Bell M. Shimada only, i.e. Sake 2012 data only.

Hake and sardine populations were surveyed along a series of parallel line transects that in general were oriented east-west, spaced at an interval of 10 nmi apart, and traversed sequentially in alternating directions; some areas in Canadian waters were better covered with transects that ran in a zigzag or north-south orientation. The survey began northwest of Morro Bay, California, proceeded north toward Dixon Entrance, and finished along the west side of Haida Gwaii (formerly called the Queen Charlotte Islands). Hake aggregations were targeted along the continental shelf and upper slope of the entire survey area, whereas sardine aggregations were targeted only as far north as the northern tip of Vancouver Island. The Shimada was tasked with completing transects up to the north end of Vancouver Island, from which point the Ricker completed the remaining transects north to Dixon Entrance and along the west coast of Haida Gwaii. Sea depth at the inshore end of individual transects was nominally 30 m, although a few transects ended in waters deeper than 30 m because of restricted areas, navigation hazards, or boat traffic. Offshore extent of individual transects was typically at a depth of 1,500 m or at a point 35 nmi west of the inshore waypoint, whichever resulted in a longer transect.

However, Simrad ME70 data were only recorded on Bell Shimada.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date June 3, 2020
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) June 26, 2012 (creation), August 29, 2014 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from NGDC MGG Sonar Water Column

Additional Metadata

Resource Type Series
Metadata Date June 3, 2020
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) June 26, 2012 (creation), August 29, 2014 (publication)
Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
Contact Email
Guid gov.noaa.ngdc.mgg.wcd:SH1204_ME70
Access Constraints Cite as: Northwest Fisheries Science Center. 2012. 'ME70 Water Column Sonar Data Collected During SH1204'. NOAA National Centers for Environmental Information. doi:10.7289/V598850R [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., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Resource may not be available for up to one year after initial collection.
Bbox East Long -121.390357
Bbox North Lat 48.7999834211
Bbox South Lat 35.7770368939
Bbox West Long -127.021768367
Coupled Resource
Frequency Of Update notPlanned
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 Language eng; USA
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System urn:ogc:def:crs:EPSG::4326
Spatial Harvester True
Temporal Extent Begin 2012-06-26T14:48:13
Temporal Extent End 2012-08-17T13:20:27

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