{
    "tag": 18915,
    "title": "Coastal Bathymetry and Backscatter Data Collected in June-August 2023 From the Chandeleur Islands, Louisiana",
    "pubdate": "20250325",
    "sername": null,
    "series_name": null,
    "issue": null,
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/spcmsc\/Chandeleur_Islands_2023_MBES_metadata.faq.html",
    "format": null,
    "email": null,
    "descript": "An Ellipsoidally Referenced Survey (ERS) using two Teledyne Reson SeaBat T50-P multibeam echosounders, in dual-head configuration, was conducted by the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) covering the nearshore areas around the Chandeleur Islands, Louisiana (LA), during 2 survey legs: June 12-21 and July 31-August 11, 2023. The download file, Chandeleur_Islands_2023_MBES_xyz.zip, includes processed elevation point data (x,y,z), as derived from a 1-meter (m) bathymetric grid. The download file, Chandeleur_Islands_2023_MBES_Backscatter.zip, includes acoustic backscatter intensity data in 32-bit floating point GeoTIFF (Geographic Tagged Image File Format, .tiff) format.",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Stalk, Chelsea A.",
            "role": "Author"
        },
        {
            "name": "Bemelmans, Christopher C.",
            "role": "Author"
        },
        {
            "name": "Miselis, Jennifer L.",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "80",
            "name": "bathymetry",
            "scope": "The elevation of the earth's surface beneath a body of water, especially the ocean, typically determined by measurements of depth from the water surface."
        },
        {
            "thcode": 2,
            "code": "470",
            "name": "geophysics",
            "scope": "Branch of geology studying the physical characteristics and phenomena of the earth and its atmosphere."
        },
        {
            "thcode": 2,
            "code": "706",
            "name": "marine geology",
            "scope": "Branch of geology concerned with the composition, geologic history, and earth processes of the ocean floor and the continental margin."
        },
        {
            "thcode": 2,
            "code": "707",
            "name": "marine geophysics",
            "scope": "Branch of earth sciences concerned with the physical processes of the oceans and continental margins.  We include here studies of large bodies of brackish and fresh water, such as lakes and rivers."
        },
        {
            "thcode": 2,
            "code": "2036",
            "name": "multibeam sonar",
            "scope": "Acoustic technique for determining depths or creating backscatter imagery in a wide swath of seafloor or lakebed centered below the instrument platform."
        },
        {
            "thcode": 2,
            "code": "810",
            "name": "ocean characteristics",
            "scope": "The attributes and process of seas and oceans."
        },
        {
            "thcode": 2,
            "code": "816",
            "name": "ocean processes",
            "scope": "Recurrent natural changes that are physical, biological, or chemical, actively affecting the seas and oceans."
        },
        {
            "thcode": 15,
            "code": "006",
            "name": "elevation",
            "scope": "Height above or below sea level, for example altitude, bathymetry, digital elevation models, slope, derived products, DEMs, TINs"
        },
        {
            "thcode": 15,
            "code": "008",
            "name": "geoscientificInformation",
            "scope": "Information pertaining to earth sciences, for example geophysical features and processes, geology, minerals, sciences dealing with the composition, structure and origin of the earth's rocks, risks of earthquakes, volcanic activity, landslides, gravity information, soils, permafrost, hydrogeology, groundwater, erosion"
        },
        {
            "thcode": 15,
            "code": "010",
            "name": "imageryBaseMapsEarthCover",
            "scope": "Base maps, for example land\/earth cover, topographic maps, imagery, unclassified images, annotations, digital ortho imagery"
        },
        {
            "thcode": 15,
            "code": "013",
            "name": "location",
            "scope": "Positional information and services, for example addresses, geodetic networks, geodetic control points, postal zones and services, place names, geographic names"
        },
        {
            "thcode": 15,
            "code": "014",
            "name": "oceans",
            "scope": "Features and characteristics of salt water bodies (excluding inland waters), for example tides, tidal waves, coastal information, reefs, maritime, outer continental shelf submerged lands, shoreline"
        }
    ],
    "place_term": [],
    "image": [],
    "fan": [
        "2023-325-FA"
    ]
}