National Geophysical Data Center (NGDC), NOAA Satellite and Information Service

View Metadata As: Get Data, FAQ, HTML, 19139 XML
Assess Metadata For: Completeness, DOI Readiness, CSW Readiness, Components

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/V5KK98PX [access date]

Search and Download
Distribution Formats
  • Kongsberg/Simrad ME70 raw format
Distributor DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Principal Investigator Wilson, Chris
gov.noaa.afsc
chris.wilson@noaa.gov
Documentation links not available.
Resource Provider
  • DOC/NOAA/NESDIS/NGDC - National Geophysical Data Center
Publisher
  • DOC/NOAA/NESDIS/NGDC - National Geophysical Data Center
Date(s)
  • creation: 2012-01-26
Dataset Progress Status Complete
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.
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:
Themes
  • EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
  • EARTH SCIENCE > Oceans > Aquatic Sciences > Fisheries
  • EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
Data Centers
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Instruments
  • In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System
Places
  • 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/V5KK98PX [access date]
Access Constraints
  • Data is publicly available and free to use
Fees
  • Free
Lineage Statement Lineage statement not available.

Metadata Last Modified: 2014-07-14

For questions about the information on this page, please email: wcd.info@noaa.gov