{
    "identifier": "gov.noaa.nodc:0131991",
    "accessLevel": "public",
    "contactPoint": {
        "@type": "vcard:Contact",
        "fn": "Your contact point",
        "hasEmail": "mailto:[email protected]"
    },
    "programCode": [
        "010:000"
    ],
    "landingPage": "",
    "title": "Small cetacean aerial survey conducted in Alaskan waters by Alaska Fisheries Science Center, National Marine Mammal Laboratory from 1997-05-08 to 1999-07-04 (NCEI Accession 0131991)",
    "description": "Aerial surveys were conducted to produce abundance estimates for the three Alaska stocks of harbor porpoise. Surveys occurred from May to July 1997 for the Southeast Alaska stock, May to July 1998 for the Gulf of Alaska stock, and June to July 1999 for the Bering Sea stock. Two primary observers observed from bubble windows on the left and right side of the plane. A belly window observer with a view directly down along the trackline collected sightings that were matched to the side observers and used to estimate a correction factor for perception bias that was specific to harbor porpoise in Alaskan waters.",
    "language": "",
    "distribution": [
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            "@type": "dcat:Distribution",
            "mediaType": "application\/json",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.nodc%3A0131991"
        },
        {
            "@type": "dcat:Distribution",
            "mediaType": "text\/html",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.nodc%3A0131991\/html"
        },
        {
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        {
            "@type": "dcat:Distribution",
            "mediaType": "application\/octet-stream",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/access\/metadata\/landing-page\/bin\/gfx?id=gov.noaa.nodc:0131991"
        }
    ],
    "bureauCode": [
        "010:04"
    ],
    "modified": "2025-11-19T15:43:26.270Z",
    "publisher": {
        "@type": "org:Organization",
        "name": "Your Publisher"
    },
    "theme": "",
    "keyword": [
        "0131991",
        "biological data",
        "cetacean",
        "cloud amount\/frequency",
        "LATITUDE",
        "LONGITUDE",
        "MARINE MAMMALS",
        "species abundance",
        "SPECIES IDENTIFICATION - COUNT",
        "VERTEBRATES",
        "VISIBILITY",
        "WIND FORCE",
        "binoculars",
        "GPS",
        "biological",
        "in situ",
        "marine mammal observation",
        "meteorological",
        "survey",
        "survey - biological",
        "visual observation",
        "AIRCRAFT",
        "NMFS\/AFSC Marine Mammal Laboratory",
        "NMFS\/AFSC Marine Mammal Laboratory",
        "Bering Sea",
        "Coastal Waters of Southeast Alaska and British Columbia",
        "Gulf of Alaska",
        "North Pacific Ocean",
        "oceanography",
        "DOC\/NOAA\/NMFS\/AFSC\/MML > Marine Mammal Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
        "EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD FREQUENCY",
        "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION",
        "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS\/VERTEBRATES",
        "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS\/VERTEBRATES > MAMMALS > CETACEANS",
        "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS\/VERTEBRATES > MARINE MAMMALS",
        "EARTH SCIENCE > OCEANS > OCEAN OPTICS",
        "abundance",
        "distribution",
        "BINOCULAR > BINOCULAR",
        "GPS RECEIVERS > GPS RECEIVERS",
        "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN",
        "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA",
        "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA",
        "Alaska",
        "summer",
        "UDBP0A",
        "environment",
        "oceans",
        "climatologyMeteorologyAtmosphere",
        "biota"
    ]
}