AFSC/ABL: Multibeam Database

Metadata Updated: April 21, 2022

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).

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date March 29, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date April 21, 2022
Reference Date(s) (publication)
Frequency Of Update unknown

Additional Metadata

Resource Type Dataset
Metadata Date March 29, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date April 21, 2022
Reference Date(s) (publication)
Responsible Party (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:17287
Access Constraints Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/ABL: Multibeam Database [Data Date Range],, Access Constraints: Contact the Point of Contact for data request form. | Use Constraints: User must read and fully comprehend the metadata prior to use. Data should not be used beyond the limits of the source scale. Acknowledgement of NOAA, as the source from which these data were obtained, in any publications and/or other representations of these data is suggested.
Bbox East Long -130
Bbox North Lat 62
Bbox South Lat 48
Bbox West Long -176
Coupled Resource
Frequency Of Update unknown
Harvest Object Id 9a4d8df0-9f68-47e9-84db-43d8fc07668b
Harvest Source Id 26a29bb9-50b0-47fd-920b-edc74aa6ec76
Harvest Source Title NMFS AFSC
Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-176.0, 48.0], [-130.0, 48.0], [-130.0, 62.0], [-176.0, 62.0], [-176.0, 48.0]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2001
Temporal Extent End 2005

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