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    Metadata Updated: April 5, 2024

    From June 5-20, 2023 (Dutch Harbor, Alaska to Kodiak, Alaska), NOAA Ocean Exploration conducted mapping operations off the coast of the Aleutian Islands in U.S. waters, aiding in closing bathymetric gaps within this region. Expedition EX2303 collected 36,980 square kilometers of bathymetry and associated water column data within the U.S. Exclusive Economic Zone and Territorial Sea deeper than 200 m. During mapping operations, NOAA Ocean Exploration simultaneously collected EM 304 multibeam sonar bathymetry observations and Simrad EK60/EK80 split-beam fisheries sonar observations of biologic material in the water column, as well as Knudsen 3260 sub-bottom profiler observations of sub-seafloor geologic structure and sediment. A focused survey region targeted potential geological hazards along the Aleutian Trench. During the expedition, one conductivity, temperature, and depth (CTD) cast collected water samples for environmental DNA (eDNA) analysis.

    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 21, 2024
    Metadata Created Date April 5, 2024
    Metadata Updated Date April 5, 2024
    Reference Date(s) June 5, 2023 (creation)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NCDDC OER

    Other Data Resources

    Graphic Preview

    Graphic Preview

    Additional Metadata

    Resource Type Fieldsession
    Metadata Date March 21, 2024
    Metadata Created Date April 5, 2024
    Metadata Updated Date April 5, 2024
    Reference Date(s) June 5, 2023 (creation)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact); NOAA/OAR/OER - Ocean Exploration and Research (Resource Provider); NOAA/OAR/OER (Principal Investigator)
    Contact Email
    Guid gov.noaa.ncei.oer:EX2303_COLLECTION
    Access Constraints Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., 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., Cite as: NOAA Office of Ocean Exploration and Research. 2023: . [indicate subset used]. NOAA National Centers for Environmental Information. Accessed [date].
    Bbox East Long -150.004
    Bbox North Lat 57.1772
    Bbox South Lat 52.0022
    Bbox West Long -169.478
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview File https://www.ncei.noaa.gov/data/oceans/oer/video/graphic/EX2303-BrowseGraphic.jpg
    Harvest Object Id d3c155bf-c108-46b9-86ec-3401c0f73fd5
    Harvest Source Id 0eb61eac-016f-4f95-a6c3-2974339749bb
    Harvest Source Title NCDDC OER
    Licence Access Contraints: Data collected by this mission is accessible through the public domain as soon as possible after the mission end. Use Constraints: Once accessed, use of these data shall be credited to the NOAA Office of Ocean Exploration and Research. The user is responsible for the results of any application of these data for other than its intended purpose Distribution Liability: NOAA makes no warranty regarding these data, expressed or implied, not does the fact of distribution constitute such a warranty. NOAA, NESDIS, and NCEI cannot assume liability for any damages caused by any errors or omisison in these data, nor as a result of the failure of these dasta to fundtion on a particular system.
    Lineage
    Metadata Language
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-169.478, 52.0022], [-150.004, 52.0022], [-150.004, 57.1772], [-169.478, 57.1772], [-169.478, 52.0022]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True

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