{
    "tag": 5788,
    "title": "Sediment grain size data from samples collected offshore Oceanside, southern California during field activity 2017-686-FA from 2017-10-23 to 2017-10-31",
    "pubdate": "2020",
    "sername": null,
    "series_name": null,
    "issue": "DOI:10.5066\/P9UELSBU",
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/pcmsc\/DataReleases\/CMGDS_DR_tool\/DR_P9UELSBU\/2017-686-FA_sample_metadata.faq.html",
    "format": null,
    "email": null,
    "descript": "This section of the data release contains grain-size analysis of twenty-six seafloor surface grab samples that were collected aboard the R\/V Snavely in 2017 on U.S. Geological Survey cruise 2017-686-FA offshore Oceanside, southern California. The samples were collected at strategic locations along the same transects as seismic-reflection lines oriented to assess sand and gravel resources in Federal and State waters for potential use in future beach nourishment projects along stretches of the coast where critical erosion hotspots have been identified. Samples were collected at 23 locations using a Van Veen sediment sampler along 4 shore-perpendicular transects spaced 5 to 9 km apart, aligned with previously collected seismic profile lines, at depths ranging from about 20 to 80 m. One sample on the outer shelf (BSS-06) was collected to evaluate an area of suspected sand occurrence. Two duplicate samples were collected at one location (BSS-08) in order to evaluate local sample variability.",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Lorenson, Thomas D.",
            "role": "Author"
        },
        {
            "name": "Sliter, Ray W.",
            "role": "Author"
        },
        {
            "name": "Conrad, James E.",
            "role": "Author"
        },
        {
            "name": "Papesh, Antoinette G.",
            "role": "Author"
        },
        {
            "name": "Watt, Janet T.",
            "role": "Author"
        },
        {
            "name": "Warrick, Jonathan A.",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "2067",
            "name": "grab sampling",
            "scope": "Use of a mechanical device to seize a volume of unconsolidated surficial material for study.  This term applies when the device used is specifically crafted for grab sampling."
        },
        {
            "thcode": 2,
            "code": "493",
            "name": "grain-size analysis",
            "scope": "Method of studying soils, sediments, sands, or rock by determining the size, distribution, and proportion of selected particles."
        },
        {
            "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": 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"
        },
        {
            "thcode": 23,
            "code": "22",
            "name": "Bathymetry and Elevation",
            "scope": "Includes measures of the height of a location above or below a reference surface. Bathymetry is 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 at mean lower low water. Distributions are topographic maps and bathymetric charts based on collected data and also include smoothed or gridded maps of bathymetry and elevation from observational data or other associated factors. Assessment data types include models of ecological value, economic value, or current rates of alterations due to erosion, accretion, climate change, and other stressors (for example, wetland habitat loss). Predictions are the results of models or projections of future distributions, values, or ecological impacts of bathymetry, including predicted changes due to natural and human forces such as erosion, deposition, sea-level rise, and dredging activities; predictions also include the results of scenario-based models of bathymetry changes under different management strategies."
        },
        {
            "thcode": 61,
            "code": "220",
            "name": "sediment",
            "scope": "unconsolidated weathering products that have been eroded, transported, and deposited in another location."
        }
    ],
    "place_term": [],
    "image": [
        {
            "name": "https:\/\/cmgds.marine.usgs.gov\/data-releases\/media\/2020\/10.5066-P9UELSBU\/5cf492531c2c4512a4700bd83b8dc3bc\/2017-686-FA_chirp_sample_map.png",
            "description": "Map showing locations of sediment samples (blue dots) overlying tracklines along which chirp seismic data were collected"
        }
    ],
    "fan": [
        "2017-686-FA"
    ]
}