{
    "tag": 21135,
    "title": "Beach topography of Humboldt Bay North Spit and South Spit, California",
    "pubdate": "20260604",
    "sername": null,
    "series_name": null,
    "issue": "DOI:10.5066\/P1SNSQB9",
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/pcmsc\/DataReleases\/CMGDS_DR_tool\/DR_P1SNSQB9\/hb_topo_metadata.faq.html",
    "format": null,
    "email": null,
    "descript": "Topographic data were collected along the beaches and dunes of Humboldt Bay North Spit and South Spit, California using global navigation satellite system (GNSS) receivers mounted to backpacks. Additional topographic data were collected between transects in some areas with an all-terrain vehicles equipped with GNSS receivers. This data release currently contains topographic data from 2 surveys performed between April 2025 and September 2025 and will be updated when additional surveys become available.",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Stevens, Andrew W.",
            "role": "Author"
        },
        {
            "name": "Logan, Joshua B.",
            "role": "Author"
        },
        {
            "name": "Currie, Jackson E.",
            "role": "Author"
        },
        {
            "name": "Timothy C. Elfers",
            "role": "Author"
        },
        {
            "name": "Parker, Kai A.",
            "role": "Author"
        },
        {
            "name": "Timothy Elfers",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "492",
            "name": "GPS measurement",
            "scope": "Determination of distance and location using instruments receiving signals from the Global Positioning System, a system of satellites for identifying earth locations."
        },
        {
            "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": 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": "417",
            "name": "Global Positioning System (GPS) observations",
            "scope": "the use of satellite signals from the Global Positioning System to determine the precise location of a terrestrial receiver."
        }
    ],
    "place_term": [],
    "image": [],
    "fan": []
}