2017 Spawning Hake Stock Acoustic-Trawl Survey (SH1701, EK60)

SH-17-01

The primary goals of the survey are to characterize the winter distribution of hake, the hake aggregations, and the fish within those aggregations in order to support an evaluation of the feasibility of a future winter hake biomass survey. The
project will use data from an integrated acoustic and trawl survey off the west coast of the U.S. from approximately south of San Diego, CA (latitude 31.6?N along the U.S. EEZ) to approximately Newport, OR (latitude 44.6?N). Our
objectives are to:
- Conduct 24-hour acoustic, trawl, oceanographic, and zooplankton operations.
- Continuously sample multi-frequency acoustic backscatter data using the ship?s Simrad EK60 scientific echosounders (18, 38, and 120 kHz) system. Simrad EK80 broadband echosounders will operate at 70 and 200
kHz. Collectively, the acoustic data will be used to characterize the distribution of hake and describe hake aggregations.
-- Collect acoustic data along pre-planned diagonal transects along the coast (hereafter ?transects?).
-- Collect acoustic data over hake aggregations, where the design will be determined based on the observed aggregation (hereafter ?adaptive transects?).
- Collect stationary acoustic data 1 hour before sunrise/sunset to 1 hour after sunrise/sunset to evaluate migration (vertical and/or horizontal) of hake aggregations.
- Conduct daytime and nighttime trawling (Appendices 3 and 4) to verify hake aggregations and obtain specimens for biological data (length, sex, maturity, age, ovaries, diet, genetics, etc.).
-- Multiple trawl samples may be taken on a single hake aggregation to evaluate heterogeneity in sex, maturity, etc.
-- Record data from shipboard net mensuration gear to evaluate trawl performance
- Use a portable x-ray system (Appendices 5 and 6) to take radiographic images of fish swimbladders
- Optically verify the presence of non-hake scatterers during trawling using a video camera and light(s) attached to the upper panel of the midwater trawl approximately 20-30 meters forward of the codend.
- Conduct vertical casts with the ship?s CTD rosette, outfitted with a dissolved oxygen sensor and Niskin bottles, at pre-planned stations along transects and/or at trawl locations (Appendix 2, Table 2, Table 4, and Table 5). These data will be used to describe the vertical and horizontal distributions of hake relative to oceanographic conditions. Niskin water
collections will be filtered for evaluation of environmental DNA (eDNA).
- Conduct underway CTD (uCTD) casts at pre-planned stations along transects (Appendix 2, Table 6). These data will be used to supplement oceanographic information obtained from the CTD rosettes and will be used to describe the distribution of hake relative to ocean conditions
- Continuously collect Acoustic Doppler Current Profiler (ADCP) data along transects. These data will be used to describe the distribution of spawning hake relative to currents.
- Conduct vertical ring net zooplankton tows at pre-planned stations along transects (Appendix 1, Figure 1; stations are listed in Appendix 2, Table 2) and bongo net tows (Appendix 1, Figure 1; stations are listed in Appendix 2, Table 3). These data will be used to describe the winter distribution of zooplankton species.
- Continuously sample sea-surface temperature, salinity, and chlorophyll-a using the ship?s thermosalinograph and fluorometer. These data will be used to estimate the physical oceanographic habitats for spawning hake.
- Continuously sample air temperature, barometric pressure, and wind speed and direction using the ship?s integrated weather station.
- Collect broadband acoustic data with EK80 echosounders operating at central frequencies of 70 and 200 kHz. The use of the EK80s will require temporary modification to the ship?s EK60 set-up.
  • Cite as: Northwest Fisheries Science Center and Southwest Fisheries Science Center (2017): Water Column Sonar Data Collection (SH1701, EK60). National Centers for Environmental Information, NOAA. doi:10.7289/V5SN079Q [access date]
gov.noaa.ngdc.mgg.wcd:SH1701_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 2017-01-10T19:07:21 to 2017-02-12T15:59:23
Spatial Reference System urn:ogc:def:crs:EPSG:4326
Spatial Bounding Box Coordinates
N: 45.5109
S: 30.78143
E: -117.30582
W: -127.97099
Spatial Coverage Map
General Documentation
Associated Resources
    Publication Dates
    • creation: 2017-01-10
    Dataset Progress Status Complete - production of the data has been completed
    Data Update Frequency Not planned
    Purpose 2017 Spawning Hake (Merluccius productus) Stock Acoustic-Trawl Survey (hereafter ?Winter Survey?) will (1) characterize the winter distribution of Pacific Hake (hereafter ?hake?), hake aggregations, and the fish within those aggregations, to support evaluation of the feasibility/design of a winter hake biomass survey and (2) increase our understanding of the winter ecology and biology of hake in the CCE. This is a research survey. The survey period is January 11 through February 12, 2017.
    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 (2017): Water Column Sonar Data Collection (SH1701, EK60). National Centers for Environmental Information, NOAA. doi:10.7289/V5SN079Q [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 (2017): Water Column Sonar Data Collection (SH1701, EK60). National Centers for Environmental Information, NOAA. doi:10.7289/V5SN079Q [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
    • SH1701_EK60
    Last Modified: 2018-08-14
    For questions about the information on this page, please email: wcd.info@noaa.gov