{
    "identifier": "gov.noaa.ncei:SD1049-2020-01_EK80",
    "accessLevel": "public",
    "contactPoint": {
        "@type": "vcard:Contact",
        "fn": "Your contact point",
        "hasEmail": "mailto:[email protected]"
    },
    "programCode": [
        "010:000"
    ],
    "landingPage": "",
    "title": "EK80 Water Column Sonar Data Collected During SD1049-2020-01",
    "description": "The Midwater Assessment and Conservation Engineering (MACE) program of NOAA Fisheries, Alaska Fisheries Science Center (AFSC) conducted acoustic stock assessment surveys in the eastern Bering Sea (EBS) in summer of 2020 to estimate distribution and abundance of walleye pollock (Gadus chalcogrammus).  This survey was initially intended as a ship-based survey, but this was cancelled due to the emerging COVID-19 pandemic.  The survey was completed by three chartered 7 meter saildrone USVs.  The primary water column acoustic instrument for the survey was a Simrad EK80 mini scientific echosounder system equipped with a dual frequency ES38-18\/200-18CR transducer (38 kHz split-beam, 200 kHz single beam).  The vessels departed Alameda, CA on 13-14 May, conducted an acoustic survey of the Bering Sea from 4-20 August, and returned to Alameda on 4 October.  The echosounder system was calibrated via the standard sphere method before and after the cruise.",
    "language": "",
    "distribution": [
        {
            "@type": "dcat:Distribution",
            "mediaType": "application\/json",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.ncei%3ASD1049-2020-01_EK80"
        },
        {
            "@type": "dcat:Distribution",
            "mediaType": "text\/html",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.ncei%3ASD1049-2020-01_EK80\/html"
        },
        {
            "@type": "dcat:Distribution",
            "mediaType": "application\/xml",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.ncei%3ASD1049-2020-01_EK80\/xml"
        }
    ],
    "bureauCode": [
        "010:04"
    ],
    "modified": "2024-08-08T09:19:18.716Z",
    "publisher": {
        "@type": "org:Organization",
        "name": "Your Publisher"
    },
    "theme": "",
    "keyword": [
        "Earth Science > Oceans > Ocean Acoustics > Acoustic Scattering",
        "Earth Science > Oceans > Aquatic Sciences > Fisheries",
        "Earth Science > Oceans > Ocean Acoustics",
        "Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Pelagic",
        "Earth Science > Biosphere > Ecosystems > Marine Ecosystems",
        "Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic",
        "Earth Science > Biosphere > Ecosystems > Aquatic Ecosystems",
        "Earth Science > Oceans > Bathymetry\/Seafloor Topography > Bathymetry",
        "Earth Science > Oceans > Bathymetry\/Seafloor Topography > Seafloor Topography",
        "Bering Sea",
        "DOC\/NOAA\/NESDIS\/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
        "DOC\/NOAA\/NESDIS\/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce",
        "DOC\/NOAA\/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
        "Vertical Location > Water Column",
        "In Situ\/Laboratory Instruments > Profilers\/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System",
        "oceans",
        "geoscientificInformation"
    ]
}