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    • Structure from motion images collected during follow-up marine debris surveys at coral reef sites at Pearl and Hermes Atoll in the Northwestern Hawaiian Islands from 2021-09-13 to 2021-09-14

    Metadata Updated: November 1, 2023

    The photographs described in this dataset were collected using a Structure from Motion (SfM) approach during in-water marine debris swim surveys conducted by snorkelers in 2021, at sites where entangled nets were removed in 2018. Surveys were conducted by the NOAA Fisheries, Ecosystem Sciences Division (ESD) at Pearl and Hermes Atoll in the Northwestern Hawaiian Islands (NWHI). The photographs in this collection are from follow-up surveys that occurred from September 13-14, 2021 on a joint mission with non-profit organization Papahanaumokuakea Marine Debris Project aboard the M/V IMUA, to assess reef recovery. Impact images are those taken from sites which were previously entangled with nets, and control images were either relocated or newly established to fulfill the paired study design.

    The 2021 mission attempted to relocate all paired sites where "after" and "control" photos were taken in 2018; if found, the permanent 3 x 3m plot was reimaged using the same SfM approach. Only a subset of 2018 sites were successfully relocated in 2021 (12 "after" sites, 8 "control" sites), and five new nearby "control" sites had to be established to fulfill the paired study design.

    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 2023-06-07T16:52:59Z
    Metadata Created Date March 17, 2023
    Metadata Updated Date November 1, 2023
    Reference Date(s) June 7, 2022 (publication), June 23, 2022 (revision)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Series
    Metadata Date 2023-06-07T16:52:59Z
    Metadata Created Date March 17, 2023
    Metadata Updated Date November 1, 2023
    Reference Date(s) June 7, 2022 (publication), June 23, 2022 (revision)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:PIFSC-SfM-Images-MarineDebris-NWHI
    Access Constraints Cite as: Ecosystem Sciences Division, Pacific Islands Fisheries Science Center (2022). Structure from motion images collected during follow-up marine debris surveys at coral reef sites at Pearl and Hermes Atoll in the Northwestern Hawaiian Islands from 2021-09-13 to 2021-09-14. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/PIFSC-SfM-Images-MarineDebris-NWHI. 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 -175.7902661
    Bbox North Lat 27.89114188
    Bbox South Lat 27.82745706
    Bbox West Long -175.817246
    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:PIFSC-SfM-Images-MarineDebris-NWHI
    Graphic Preview Type PNG
    Harvest Object Id 25a33fb5-e84f-4796-b5bd-2ee5fc0554a3
    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": [[[-175.817246, 27.82745706], [-175.7902661, 27.82745706], [-175.7902661, 27.89114188], [-175.817246, 27.89114188], [-175.817246, 27.82745706]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2021-09-13
    Temporal Extent End 2021-09-14

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