{
    "tag": 19141,
    "title": "Isopachs--Salt Point to Drakes Bay, California",
    "pubdate": "2014",
    "sername": null,
    "series_name": null,
    "issue": null,
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/pcmsc\/SeriesReports\/DS_DDS\/DS_781\/SaltPointToDrakesBay\/Isopachs_SaltPointToDrakesBay_metadata.faq.html",
    "format": null,
    "email": null,
    "descript": "This part of DS 781 presents data for the isopachs for the Salt Point to Drakes Bay, California, region. The vector data file is included in \"Isopachs_SaltPointToDrakesBay.zip,\" which is accessible from https:\/\/pubs.usgs.gov\/ds\/781\/SaltPointToDrakesBay\/data_catalog_SaltPointToDrakesBay.html.  As part of the USGS's California Seafloor Mapping Program, a 20-m grid of sediment thickness for the seafloor within the 3-nautical-mile limit of California's State Waters between Salt Point and Drakes Bay was generated from seismic-reflection data collected in 2009 supplemented with outcrop and geologic structure from sheet DS 781. The resulting grid covers an area of approximately 600 sq km. The volume of sediment accumulated since the Last Glacial Maximum is approximately 9,000 million cubic meters. Contours at 2.5-meter intervals were derived from this grid.",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Johnson, Samuel Y.",
            "role": "Author"
        },
        {
            "name": "Hartwell, Stephen R.",
            "role": "Author"
        },
        {
            "name": "Watt, Janet T.",
            "role": "Author"
        },
        {
            "name": "Sliter, Ray W.",
            "role": "Author"
        },
        {
            "name": "Golden, Nadine E.",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "474",
            "name": "geospatial datasets",
            "scope": "Collections of related digital information that are geographically referenced."
        },
        {
            "thcode": 2,
            "code": "700",
            "name": "maps and atlases",
            "scope": "Representation, usually on a flat surface, of a part or whole of the Earth or other parts of the universe.  Collections of maps linked digitally or bound together in a book are called atlases."
        },
        {
            "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": "1045",
            "name": "seismic reflection methods",
            "scope": "Geophysical technique to study the subsurface of the earth using sound waves induced by explosives, vibrating devices, or percussive equipment.  The reflections of the sound waves from the boundaries of different rocks are measured."
        },
        {
            "thcode": 2,
            "code": "2089",
            "name": "stratigraphic thickness",
            "scope": "Thickness of earth material layers or groups of such layers, often portrayed as isopachs (contours) or gridded data."
        },
        {
            "thcode": 15,
            "code": "007",
            "name": "environment",
            "scope": "Environmental resources, protection and conservation, for example environmental pollution, waste storage and treatment, environmental impact assessment, monitoring environmental risk, nature reserves, landscape, water quality, air quality, environmental modeling"
        },
        {
            "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": "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": [
        {
            "name": "https:\/\/pubs.usgs.gov\/ds\/781\/SaltPointToDrakesBay\/images\/Isopachs_SaltPointToDrakesBay.jpg",
            "description": "Map of sediment thickness contours in the Salt Point to Drakes Bay region of California"
        }
    ],
    "fan": [
        "S809NC"
    ]
}