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    • Hard-Soft Seafloor Classification, 5m (Reson) - Tutuila, American Samoa

    Metadata Updated: October 14, 2022

    Preliminary hard and soft seafloor substrate map derived from an unsupervised classification of multibeam backscatter and bathymety derivatives at Tutuila Island, American Samoa, South Pacific. The dataset was derived using a combination of Reson 8101 backscatter, bathymetric variance, and bathymetric rugosity. The sonar frequency was 240 kHz and all data were resampled to 5 m grid cell size prior to the classification. Initial supervised classifications of the backscatter data into hard and soft seafloor substrates, using seafloor photographs for groundtruthing and to define regions of interest, were used to define unsupervised class types and to visually evaluate the accuracy of the unsupervised classification seafloor substrate map.

    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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    Dates

    Metadata Date March 30, 2021
    Metadata Created Date November 12, 2020
    Metadata Updated Date October 14, 2022
    Reference Date(s) January 25, 2016 (creation), January 25, 2016 (issued), January 25, 2016 (revision)
    Frequency Of Update

    Metadata Source

    Harvested from ioos

    Other Data Resources

    Graphic Preview

    Sample image.

    Additional Metadata

    Resource Type Dataset
    Metadata Date March 30, 2021
    Metadata Created Date November 12, 2020
    Metadata Updated Date October 14, 2022
    Reference Date(s) January 25, 2016 (creation), January 25, 2016 (issued), January 25, 2016 (revision)
    Responsible Party Pacific Islands Benthic Habitat Mapping Center (PIBHMC) (Point of Contact)
    Contact Email
    Guid as_pibhmc_tut_5m_hardsoft_reson
    Access Constraints
    Bbox East Long -170.485
    Bbox North Lat -14.195
    Bbox South Lat -14.384
    Bbox West Long -170.904
    Coupled Resource [{"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}]
    Frequency Of Update
    Graphic Preview Description Sample image.
    Graphic Preview File http://pacioos.org/metadata/browse/as_pibhmc_tut_5m_hardsoft_reson.png
    Harvest Object Id a5a64c85-d3ba-49f1-8b79-f831fc71fc92
    Harvest Source Id 54e15a6e-6dde-4c9c-a8f0-345cc0dfccfb
    Harvest Source Title ioos
    Licence
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-170.904, -14.384], [-170.485, -14.384], [-170.485, -14.195], [-170.904, -14.195], [-170.904, -14.384]]]}
    Progress
    Spatial Data Service Type Open Geospatial Consortium Web Coverage Service (WCS)
    Spatial Reference System
    Spatial Harvester True

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