DY1103 Gulf of Alaska ME70

ME70 data collected during the NOAA ship Oscar Dyson summer 2011 Gulf of Alaska pollock survey.
  • Cite as: Alaska Fisheries Science Center (2011): Water Column Sonar Data Collection (DY1103, ME70). National Geophysical Data Center, NOAA. doi:10.7289/V5QC01D6 [access date]
gov.noaa.ngdc.mgg.wcd:DY1103_ME70
Search Data
Distribution Formats
  • Kongsberg/Simrad ME70 raw format
    • File Specification: Kongsberg/Simrad ME70 raw files are functionally equivilent to Ex60 raw files and contain power and optionally angular position data with each beam identified by an independent transducer channel. See the Simrad ME70 interface specification manual for further information.
Ordering Instructions Contact the 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 No POCs available for this dataset
Time Period 2011-06-15T09:16:48 to 2011-08-12T22:51:59
Spatial Reference System EPSG::2346
Spatial Bounding Box Coordinates
N: 59.2459
S: 52.3302
E: -151.0974
W: -170.0937
Spatial Coverage Map
Documentation links not available.
Publication Dates
  • creation: 2012-01-26
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Not planned
Purpose Scientists from the Midwater Assessment and Conservation Engineering (MACE) Program of the Alaska Fisheries Science Center's (AFSC) Resource Assessment and Conservation Engineering (RACE) Division routinely conduct acoustic-trawl (AT) stock assessment surveys to estimate the distribution and abundance of walleye pollock (Theragra chalcogramma). The summer 2011 cruise onboard NOAA Ship Oscar Dyson was conducted from June 9, 2011 to August 9, 2011 in the western-central Gulf fo Alaska. Acoustic data was collected using Simrad EK60 scientific echosounder and Simrad ME70 multibeam echosounder systems mounted on the hull of the Oscar Dyson. The purposes of the cruise included the collection of acoustic and trawl data necessary to determine the distribution, biomass, and biological composition of walleye pollock and other major fish species; calibrate the EK60 and ME70 acoustic systems using standard sphere calibration techniques; collect physical oceanographic data (temperature and salinity profiles) at selected sites, and continuously collect sea surface temperature and salinity data; conduct trawl hauls (AWT, PNE, and Methot) to ground truth multi-frequency echo integration data collection; collect data on fish distributions and school characteristics and the seafloor using the ME70 multibeam echosounder.
Use Limitations
  • Data not to be used for navigation.
  • 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.
  • Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
Dataset Citation
  • Cite as: Alaska Fisheries Science Center (2011): Water Column Sonar Data Collection (DY1103, ME70). National Geophysical Data Center, NOAA. doi:10.7289/V5QC01D6 [access date]
Resource Providers
  • Dataset contact information not available
Publishers
  • 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
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 > Ocean Acoustics
  • Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Pelagic
  • Earth Science > Biosphere > Ecosystems > Marine Ecosystems
  • Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic
  • Earth Science > Biosphere > Ecosystems > Aquatic Ecosystems
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
  • 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)
  • Gulf of Alaska
Use Constraints
  • Cite as: Alaska Fisheries Science Center (2011): Water Column Sonar Data Collection (DY1103, ME70). National Geophysical Data Center, NOAA. doi:10.7289/V5QC01D6 [access date]
Access Constraints
  • Data is publicly available and free to use
Fees
  • Free
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • Kongsberg/Simrad ME70
  • Simrad ME70
  • Simrad EK60
  • Simrad ES60
  • Knudsen CHIRP 3260
  • Sippican XBT/XSV
  • SBE 49 FastCAT
  • SBE 911plus CTD
  • SBE 32
  • POS/MV 320
Platform
  • Oscar Dyson (DY)
Operation
  • DY1103
Last Modified: 2017-05-30
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