{
    "tag": 6525,
    "title": "Grain size, bulk density, and organic carbon of sediment cores from San Pablo Bay and Grizzly Bay, California, 2019",
    "pubdate": "20201231",
    "sername": null,
    "series_name": null,
    "issue": "doi:10.5066\/P9P7I65U",
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/pcmsc\/DataReleases\/ScienceBase\/DR_P9P7I65U\/ERO19_GS_BD_C_metadata.faq.html",
    "format": null,
    "email": null,
    "descript": "Bed sediment samples were collected in San Pablo Bay and Grizzly Bays on eight days from June through November 2019, to analyze for sediment properties including bulk density, particle size distribution, and percent organic carbon. Sediment samples were collected from a small vessel near pre-established USGS instrument moorings using a Gomex box corer   that was subsampled with three push cores (37 mm in diameter) per Gomex core. Six subsamples were collected from the top 5 centimeters (cm) of each push core, a few push cores included the top 8 cm. The top two subsamples were each 0.5 cm thick, and all following subsamples were each 1 cm thick. Push core samples from the first, third, and fifth centimeter depth were analyzed for grain size and percent organic carbon, while all 6 sections were analyzed for bulk density. Data are provided in a comma-delimited values spreadsheet. These data were collected as part of a collaborative project with the USGS California Water Science Center and the USGS Water Mission Area on physical and biological controls on sediment erodibility, funded by the USGS Priority Ecosystems Program for San Francisco Bay and Delta and the USGS Coastal Marine Hazards and Resources Program.",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Winklerprins, Lukas T.",
            "role": "Author"
        },
        {
            "name": "Tan, Angela C.",
            "role": "Author"
        },
        {
            "name": "Lacy, Jessica R.",
            "role": "Author"
        },
        {
            "name": "McGill, Samantha C.",
            "role": "Author"
        },
        {
            "name": "Ferreira, Joanne C. T.",
            "role": "Author"
        },
        {
            "name": "Allen, Rachel M.",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "1714",
            "name": "bulk density",
            "scope": "Overall density of an unconsolidated earth material."
        },
        {
            "thcode": 2,
            "code": "1420",
            "name": "carbon",
            "scope": "Nonmetal element with symbol C and atomic number 6 <http:\/\/periodic.lanl.gov\/6.shtml>"
        },
        {
            "thcode": 2,
            "code": "2000",
            "name": "dissolved organic compounds",
            "scope": "Organic compounds present in water, typically as anthropogenic contaminants including pharmaceuticals, pesticides, and herbicides."
        },
        {
            "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": "2064",
            "name": "push coring",
            "scope": "Use of a small, hand-held tube pressed into unconsolidated material for sampling."
        },
        {
            "thcode": 2,
            "code": "1025",
            "name": "sea-floor characteristics",
            "scope": "Geomorphic features and geographic, compositional, and textural variation in the materials composing the ocean floor. Includes both large-scale structures (such as seamounts and rises) and fine-scale variations in rocks and deposits on the sea floor."
        },
        {
            "thcode": 2,
            "code": "1034",
            "name": "sediment transport",
            "scope": "Transport of solid particles of unconsolidated rock and mineral fragments, chemical precipitates, or biological materials."
        },
        {
            "thcode": 2,
            "code": "1199",
            "name": "unconsolidated deposits",
            "scope": "Loosely bound sediments such as sand, gravel, and silt which tend to accumulate in low areas or valleys."
        },
        {
            "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": "23",
            "name": "Substrate",
            "scope": "Represents the character and composition of the surface and near surface of the sea floor in subtidal or intertidal areas, as defined in the Substrate Component of CMECS or in similar classification systems. Distributions are records of substrate characteristics based on visual or photographic inspection or on analysis of samples and cores, and they also include interpretive maps classifying areas on the basis of combinations of observations, hydrodynamic models, or geological models. Assessments include evaluations of present ecological or economic values of substrate distributions, drivers of substrate change, and functions of substrates. Predictions are the results of models or projections of future substrate distributions, values, or ecological impacts, including predicted substrate changes due to natural and human forces including erosion, accretion, sea-level change, extraction, trawling, or other factors; and they are the results of scenario-based models of substrate changes on ecological or economic values under different management strategies or other human alterations."
        },
        {
            "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:\/\/www.sciencebase.gov\/catalog\/file\/get\/5f497ad982ce4c3d122bbb15?name=ERO19_study_area.jpg  &allowOpen=true",
            "description": "Digital elevation model (DEM) of study area showing locations of USGS moorings in San Pablo Bay (PBM) and Grizzly Bay (GBM)."
        }
    ],
    "fan": [
        "2019-625-FA",
        "2019-668-FA"
    ]
}