{
    "tag": 19143,
    "title": "Transgressive Contours--Salt Point to Drakes Bay, California",
    "pubdate": "2014",
    "sername": null,
    "series_name": null,
    "issue": "DS 781",
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/pcmsc\/SeriesReports\/DS_DDS\/DS_781\/SaltPointToDrakesBay\/TransgressiveContours_SaltPointToDrakesBay_metadata.faq.html",
    "format": null,
    "email": null,
    "descript": "This part of DS 781 presents data for the transgressive contours for the Salt Point to Drakes Bay, California, region. The vector file is included in \"TransgressiveContours_SaltPointToDrakesBay.zip,\" which is accessible from https:\/\/pubs.usgs.gov\/ds\/781\/SaltPointToDrakesBay\/data_catalog_SaltPointToDrakesBay.html.  As part of the USGS's California State Waters Mapping Project, a 20-m grid of depth to the transgressive surface of the last glacial maximum was generated for the areas within the 3-nautical mile limit between Salt Point and Drakes Bay was generated from seismic-reflection data collected in 2009 supplemented with outcrop and geologic structure from DS 781. The resulting grid covers an area of approximately 550 sq km. The depth to the transgressive surface of the Last Glacial Maximum ranges between 0 and 102 meters.",
    "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\/TransgressiveContours_SaltPointToDrakesBay.jpg",
            "description": "Map of depth-to-transition contours in the Salt Point to Drakes Bay region of California"
        }
    ],
    "fan": [
        "S809NC"
    ]
}