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    • Mosaic of bathymetry derived from multispectral WorldView-2 satellite imagery of Agrihan Island, Territory of Mariana, USA, from 2003-08-26 to 2012-05-03 (NCEI Accession 0126914)

    Metadata Updated: December 1, 2023

    Bathymetric data derived from a multispectral WorldView-2 satellite image mosaicked to provide near complete coverage of nearshore terrain around the islands. Bathymetry values shallower than ~20 m were derived by gauging the relative attenuation of coastal, blue, green and yellow spectral radiance as a function of depth. A multiple linear regression analysis of coastal, blue, green and yellow band spectral values against depth determined the variables of y-intercept, coastal, blue, green and yellow slope values. Variables then used in multivariate slope intercept formula to derive depth. Variables were adjusted to improve the statistical accuracy and spatial coverage of the final derived bathymetry product. Digital image processing to derive depths conducted with the ENVI 4.8 software program while data editing and integration was performed using ArcGIS 10. This data set is for the shelf environment of Agrihan Island, Mariana.

    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 2021-10-16T21:36:51Z
    Metadata Created Date March 12, 2021
    Metadata Updated Date December 1, 2023
    Reference Date(s) April 1, 2015 (publication), April 2, 2015 (revision)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Dataset
    Metadata Date 2021-10-16T21:36:51Z
    Metadata Created Date March 12, 2021
    Metadata Updated Date December 1, 2023
    Reference Date(s) April 1, 2015 (publication), April 2, 2015 (revision)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0126914
    Access Constraints Cite as: Ehses, Julia; Coral Reef Ecosystems Program (2015). Mosaic of bathymetry derived from multispectral WorldView-2 satellite imagery of Agrihan Island, Territory of Mariana, USA, from 2003-08-26 to 2012-05-03 (NCEI Accession 0126914). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0126914. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Bbox East Long 145.725
    Bbox North Lat 18.842
    Bbox South Lat 18.705
    Bbox West Long 145.597
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0126914
    Graphic Preview Type PNG
    Harvest Object Id 695d6e08-b6ad-413d-bf2d-3f73bff0d935
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[145.597, 18.705], [145.725, 18.705], [145.725, 18.842], [145.597, 18.842], [145.597, 18.705]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2003-08-26
    Temporal Extent End 2012-05-03

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