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Okeanos Explorer (EX1504L1): CAPSTONE NWHI & Johnston Exploration Mapping

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 12:16 AM | Dataset Last Updated: March 23, 2026 at 05:47 PM
Multibeam and singlebeam mapping operations will be conducted 24 hours a day throughout the cruise. Sub-bottom profile mapping will be conducted 24 hours a day at the discretion of the CO. Most of the mapping areas to be pursued during this cruise have never been mapped with modern sonar before. Mapping activities will focus on three primary areas, (1) some potential underwater cultural heritage sites south of Oahu, (2) the Necker Island area within the Papahānaumokuākea Marine National Monument (PMNM), and (2) the Karin Seamount Chain near Johnson Atoll within the recently expanded Pacific Remote Islands Marine National Monument (PRIMNM).

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Pacific Remote Islands Marine National Monument Marine National Monument CAPSTONE NASA Marine Aerosols Network NMFS Pacific Islands Region marine mammal observations marine mammal behavioral response habitat survey deep sea corals sponge communities deep sea minerals rare metals rare earth elements PCZ plate tectonics subduction zone biology subduction zone geology PapahanaumokuakeaKarin Seamount ChainPMNMPRIMNMKarin RidgeJohnston AtollNecker IslandPearl HarborJohnston seamount chainPrime Crust ZoneCentral Pacific Seamounts expeditionexplorationexplorermarine educationnoaaoceanocean discoveryocean educationocean explorationocean exploration and researchocean literacyocean researchOERsciencescientific missionscientific researchseastewardshipsystematic explorationtechnologytransformational researchunderseaunderwatermapping surveymultibeammultibeam backscattermultibeam sonarmulti-beam sonarnoaa fleetokeanosokeanos explorerR337scientific computing systemSCSsingle beam sonarsinglebeam sonarsingle-beam sonarsub-bottom profilewater column backscatterarchaeologicalarchaeologyconservationconservecrmcultural resource managementhistoricmarine archaeologymaritimemaritime archaeologynauticalnautical archaeologypreserveprotectprotectionsubmerged cultural heritagesubmerged cultural resourceuchunderwater cultural heritage Davisville Rhode Island Hawaii International Waters Seamounts Seafloor Mapping

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Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
{
  "fn": "NOAA National Centers for Environmental Information",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:ncei.info@noaa.gov"
}
describedByType application/octet-steam
description Multibeam and singlebeam mapping operations will be conducted 24 hours a day throughout the cruise. Sub-bottom profile mapping will be conducted 24 hours a day at the discretion of the CO. Most of the mapping areas to be pursued during this cruise have never been mapped with modern sonar before. Mapping activities will focus on three primary areas, (1) some potential underwater cultural heritage sites south of Oahu, (2) the Necker Island area within the Papahānaumokuākea Marine National Monument (PMNM), and (2) the Karin Seamount Chain near Johnson Atoll within the recently expanded Pacific Remote Islands Marine National Monument (PRIMNM).
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "Metadata Landing Page",
    "accessURL": "https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.multibeam:AT11L12_Multibeam/html",
    "mediaType": "text/html",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Multibeam Bathymetry",
    "accessURL": "https://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html",
    "mediaType": "text/html",
    "description": "Information about and access to multibeam bathymetric data at NCEI",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Bathymetric Data Viewer",
    "accessURL": "https://ncei.noaa.gov/maps/bathymetry/",
    "mediaType": "text/html",
    "description": "Map viewer for discovery of bathymetric data - including multibeam sonar data",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "NCEI Multibeam Cruise Landing Page",
    "accessURL": "https://www.ngdc.noaa.gov/ships/atlantis/AT11L12_mb.html",
    "mediaType": "text/html",
    "description": "Information regarding multibeam data collection from cruise - including cruise metadata and download access",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Cruise File List",
    "accessURL": "https://data.ngdc.noaa.gov/platforms/ocean/ships/atlantis/AT11L12/multibeam/data/version1/MB/",
    "mediaType": "text/html",
    "description": "List of cruise related files available for download",
    "describedByType": "application/octet-stream"
  },
  {
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    "accessURL": "https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords",
    "mediaType": "text/html",
    "description": "The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.",
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  },
  {
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]
identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/oer/iso/xml/EX1504L1.xml
isPartOf None
issued 2004-06-14T00:00:00.000+00:00
keyword 
[
  "Pacific Remote Islands Marine National Monument												Marine National Monument												CAPSTONE												NASA Marine Aerosols Network												NMFS Pacific Islands Region												marine mammal observations												marine mammal behavioral response												habitat survey												deep sea corals												sponge communities												deep sea minerals												rare metals												rare earth elements												PCZ												plate tectonics												subduction zone biology												subduction zone geology",
  "PapahanaumokuakeaKarin Seamount ChainPMNMPRIMNMKarin RidgeJohnston AtollNecker IslandPearl HarborJohnston seamount chainPrime Crust ZoneCentral Pacific Seamounts",
  "expeditionexplorationexplorermarine educationnoaaoceanocean discoveryocean educationocean explorationocean exploration and researchocean literacyocean researchOERsciencescientific missionscientific researchseastewardshipsystematic explorationtechnologytransformational researchunderseaunderwatermapping surveymultibeammultibeam backscattermultibeam sonarmulti-beam sonarnoaa fleetokeanosokeanos explorerR337scientific computing systemSCSsingle beam sonarsinglebeam sonarsingle-beam sonarsub-bottom profilewater column backscatterarchaeologicalarchaeologyconservationconservecrmcultural resource managementhistoricmarine archaeologymaritimemaritime archaeologynauticalnautical archaeologypreserveprotectprotectionsubmerged cultural heritagesubmerged cultural resourceuchunderwater cultural heritage",
  "Davisville Rhode Island",
  "Hawaii",
  "International Waters",
  "Seamounts",
  "Seafloor Mapping",
  "Marine Archaeology"
]
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2026-03-23T17:47:51.000+00:00
publisher 
{
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
}
rights otherRestrictions
spatial 144.580663,2.03568001057,124.799878,13.95989
temporal 2004-06-14T00:00:00+00:00/2004-07-13T00:00:00+00:00
theme 
[
  "geospatial"
]
title Okeanos Explorer (EX1504L1): CAPSTONE NWHI & Johnston Exploration Mapping

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