{
    "identifier": "gov.noaa.ncei:RL1907_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 RL1907",
    "description": "The survey domain was defined by the modeled distribution of potential habitat for the northern subpopulation (stock) of Pacific Sardine (Zwolinski et al., 2011), and information recently gathered from other research projects [e.g., California Cooperative Oceanic Fisheries Investigations (CalCOFI) samples] or fishing industry reports (e.g., catch and bycatch data). This area encompassed the anticipated distributions of the northern stock of Pacific Sardine and the central and northern stocks of Northern Anchovy off the west coasts of the U.S. and Canada from approximately San Diego, CA, to Cape Scott, British Columbia, but also spanned portions of the southern stock of Pacific Sardine, and stocks of Pacific Mackerel, Jack Mackerel, and Pacific Herring.\n\nOn Lasker, multi-frequency EK60 General Purpose Transceivers (18-and 38-kHz GPTs; Simrad) and EK80 Wideband Transceivers (70-, 120-, 200-, and 333-kHz WBTs; Simrad) were configured with split-beam transducers (ES18-11, ES38B, ES70-7C, ES120-7C, ES200-7C, and ES333-7C, respectively; Simrad). The transducers were mounted on the bottom of a retractable keel or \u201ccenterboard\u201d. The keel was retracted (transducers~5-m depth) during calibration, and extended to the intermediate position (transducers ~7-m depth) during the survey. Exceptions were made during shallow water operations, when the keel was retracted; or during times of heavy weather, when the keel was extended (transducers~9-mdepth) to provide extra stability and reduce the effect of weather-generated noise. Transducer position and motion were measured at 5Hz using an inertial motion unit (Applanix POS-MV, Trimble).\n\nFinal 2021 Report: https:\/\/doi.org\/10.25923\/dg6w-q452 \nFinal 2021 Biomass Report: https:\/\/doi.org\/10.25923\/nghv-7c40",
    "language": "",
    "distribution": [
        {
            "@type": "dcat:Distribution",
            "mediaType": "application\/json",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.ncei%3ARL1907_EK80"
        },
        {
            "@type": "dcat:Distribution",
            "mediaType": "text\/html",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.ncei%3ARL1907_EK80\/html"
        },
        {
            "@type": "dcat:Distribution",
            "mediaType": "application\/xml",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.ncei%3ARL1907_EK80\/xml"
        }
    ],
    "bureauCode": [
        "010:04"
    ],
    "modified": "2024-08-08T09:19:09.531Z",
    "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",
        "North Pacific Ocean",
        "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",
        "Vertical Location > Water Column",
        "In Situ\/Laboratory Instruments > Profilers\/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System",
        "oceans",
        "geoscientificInformation"
    ]
}