The Winter 2016 Integrated Acoustic and Trawl Survey of Pacific Hake (Merluccius productus) (SH1601, EK60)

SH2016-01

Scientists from the Fishery Resource Analysis and Monitoring (FRAM) division at the Northwest Fisheries Science Center (NWFSC) led the winter 2016 hake IAT survey aboard the NOAA Ship Bell M. Shimada, a 63.7-m (209-foot), acoustically quieted Fisheries Survey Vessel equipped for fisheries and oceanographic research. The survey was conducted between January 9 and February 9 (Table 1). The Shimada surveyed from 45.5?N to 31.3?N, beginning at
Newport, Oregon, proceeding south to the U.S./Mexico border, and then heading north back to Newport (Figures 1 and 2). Pre-planned (?coarse?) zigzag transects were oriented east-west, with larger offshore diagonals connected via smaller nearshore diagonals. Offshore diagonals, spaced roughly 100 nmi apart at the inshore side, ranged from the 30-m isobath (or as close to shore as was safely navigable) to bottoms depths of roughly 3,500?4,500 m. Nearshore
diagonals extended from the ?30-m contour to roughly 2,000 m. If hake were detected at the offshore end of a transect, the vessel proceeded west to the end of the hake sign and then beyond for an additional 0.5 nmi to ensure that the end of the aggregation was located. When aggregations of spawning hake were detected along a pre-planned transect and confirmed by midwater trawling, adaptive transects, either parallel at a fine resolution (spaced either 0.5 or 1.0 nmi apart) or in a star pattern, were used to determine the spatial extent and size of the spawning aggregation(s). Additional acoustic data were collected to evaluate crepuscular migration (vertical and/or horizontal) of spawning hake aggregations by having the Shimada remain stationary one hour before sunrise to one hour after.
  • Cite as: Northwest Fisheries Science Center and Southwest Fisheries Science Center (2016): Water Column Sonar Data Collection (SH1601, EK60). National Centers for Environmental Information, NOAA. doi:10.7289/V5FF3QQV [access date]
gov.noaa.ngdc.mgg.wcd:SH1601_EK60
Search Data
Distribution Formats
  • Simrad EK80 raw (.raw) format (Version: 1)
    • File Specification: Simrad EK60 raw files recorded in EK80 format. See the Simrad EK80 interface specification manual for additional information.
Ordering Instructions Contact the NCEI Water Column Sonar Data Manager to order data
Distributor Chuck Anderson
Water Column Sonar Data Manager
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
(303) 497-4742
wcd.info@noaa.gov
Dataset Principal Investigator Sandy Parker-Stetter
Research Fishery Biologist
NWFSC/FRAM/FEAT
206.861.1250
sandy.parker-stetter@noaa.gov
Time Period 2016-01-07T21:43:41 to 2016-02-09T20:04:44
Spatial Reference System urn:ogc:def:crs:EPSG:4326
Spatial Bounding Box Coordinates
N: 45.49275
S: 31.3234
E: -117.30221
W: -128.13003
Spatial Coverage Map
General Documentation
Associated Resources
    Publication Dates
    • creation: 2016-01-07
    Dataset Progress Status Complete - production of the data has been completed
    Data Update Frequency Not planned
    Purpose The primary purposes of the winter 2016 hake Integrated Acoustic and Trawl (IAT) survey were to evaluate the feasibility of conducting a winter spawning hake biomass survey and to collect biological data on hake during winter.
    Use Limitations
    • 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.
    Dataset Citation
    • Cite as: Northwest Fisheries Science Center and Southwest Fisheries Science Center (2016): Water Column Sonar Data Collection (SH1601, EK60). National Centers for Environmental Information, NOAA. doi:10.7289/V5FF3QQV [access date]
    Custodians
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Resource Providers
    • DOC/NOAA/NMFS/NWFSC > Northwest Fisheries Science Center
    Points of Contact
    • DOC/NOAA/NMFS/NWFSC > Northwest Fisheries Science Center
    Publishers
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Theme keywords Global Change Master Directory (GCMD) Science Keywords
    • EARTH SCIENCE > Oceans > Ocean Acoustics > Acoustic Scattering
    • EARTH SCIENCE > Oceans > Aquatic Sciences > Fisheries
    • EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
    • EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS
    • EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS
    • Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic
    • Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Pelagic
    • EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
    Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce
    Instrument keywords Global Change Master Directory (GCMD) Instrument Keywords
    • In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System
    Place keywords International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
    • North Pacific Ocean
    Global Change Master Directory (GCMD) Location Keywords
    • GEOGRAPHIC REGION > GLOBAL
    • VERTICAL LOCATION > SEA FLOOR
    Use Constraints
    • Cite as: Northwest Fisheries Science Center and Southwest Fisheries Science Center (2016): Water Column Sonar Data Collection (SH1601, EK60). National Centers for Environmental Information, NOAA. doi:10.7289/V5FF3QQV [access date]
    Access Constraints
    • 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.
    • Resource may not be available for up to one year after initial collection.
    Fees
    • Free
    Lineage information for: series
    Processor
    • NWFSC/FRAM/FEAT
    Lineage information for: series
    Lineage Statement EK60 used three Simrad split-beam transducers, operating at 18, 38, and 120 kHz. The Simrad EK80 broadband echo sounder used 70- and 200-kHz transducers.
    Acquisition Information (collection)
    Instrument
    • Simrad EK60
    • Simrad ME70
    • Simrad EK60
    • Simrad ES60
    • Furuno FE700
    • Sea-Bird SBE 9
    • POS/MV 320
    • Eppley PIR
    • SBE SeaCat 21
    • RM Young 61202V
    • RM Young 41382VC
    • RM Young 05106/05306B
    Platform
    • Bell M. Shimada (SH)
    Operation
    • SH2016-01_EK60
    Last Modified: 2018-07-31
    For questions about the information on this page, please email: wcd.info@noaa.gov