AFSC/ABL: Multibeam Database

Description

Seafloor habitat maps have been created using high resolution multibeam sonar with co-registered backscatter at various locations throughout the Alaska Region. Most of the mapping in the GOA is in the form of postage-stamps ranging in size from 27 km2 to 790 km2. Some of this mapping was in cooperation with the Alaska Department of Fish and Game and the University of Alaska Fairbanks. Such mapped sites in the GOA were generally selected in the areas of fisheries for rockfish (Sebastes spp.). The selection of specific sites to map were influenced by budget and logistic constraints that in some cases limited the fishery habitat mapping to areas near concurrent areas being mapped by NOAAs Office of Coast Survey. In contrast for the Aleutian Islands, a systematic design was used to select sites to map that enabled a relatively substantial area of seafloor to be characterized. In theory such a systematic design allows extrapolation to unmapped areas. Database includes bathymetry and backscatter data files as well as a habitat typing spreadsheet for all areas classified using a deep-water marine benthic habitat scheme modified after Green et al. (1999).

Resources

Name Format Description Link
0 View the complete metadata record on InPort for more information about this dataset. https://www.fisheries.noaa.gov/inport/item/17287
33 NOAA Data Management Plan for this record on InPort. https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/17287.pdf
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
0 View the complete metadata record on InPort for more information about this dataset. https://www.fisheries.noaa.gov/inport/item/17287
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
33 NOAA Data Management Plan for this record on InPort. https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/17287.pdf

Tags

  • alaska fisheries science center
  • alaska
  • bathymetry
  • noaa
  • gulf of alaska
  • u.s. department of commerce
  • national marine fisheries service
  • multi-beam
  • doc/noaa/nmfs/afsc
  • auke bay laboratories
  • backscatter
  • ak

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Categories