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    • AFSC/NMML: Small cetacean aerial survey in Alaskan waters, 1997-1999

    Metadata Updated: November 1, 2024

    Aerial surveys were conducted to produce abundance estimates for the three Alaska stocks of harbor porpoise. Surveys occurred from May to July 1997 for the Southeast Alaska stock, May to July 1998 for the Gulf of Alaska stock, and June to July 1999 for the Bering Sea stock. Two primary observers observed from bubble windows on the left and right side of the plane. A belly window observer with a view directly down along the trackline collected sightings that were matched to the side observers and used to estimate a correction factor for perception bias that was specific to harbor porpoise in Alaskan waters.

    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.

    Downloads & Resources

    Dates

    Metadata Date October 3, 2024
    Metadata Created Date October 28, 2022
    Metadata Updated Date November 1, 2024
    Reference Date(s) 1997 (creation), (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NMFS AFSC

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date October 3, 2024
    Metadata Created Date October 28, 2022
    Metadata Updated Date November 1, 2024
    Reference Date(s) 1997 (creation), (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:26315
    Access Constraints Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/NMML: Small cetacean aerial survey in Alaskan waters, 1997-1999 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/26315., Access Constraints: There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed., Use Constraints: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested., Distribution Liability: The user is responsible for the results of any application of this data for other than its intended purpose. NOAA denies liability if the data are misused.
    Bbox East Long -130
    Bbox North Lat 62
    Bbox South Lat 54
    Bbox West Long -165
    Coupled Resource
    Frequency Of Update notPlanned
    Harvest Object Id 4689278a-7638-468f-9b4f-6c9c9c5efc71
    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.
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-165.0, 54.0], [-130.0, 54.0], [-130.0, 62.0], [-165.0, 62.0], [-165.0, 54.0]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1997
    Temporal Extent End 1999

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