{
    "tag": 8367,
    "title": "Land-Cover Data Derived from Landsat Satellite Imagery, Assateague Island to Metompkin Island, Maryland and Virginia, 1985 and 2015",
    "pubdate": "20170828",
    "sername": null,
    "series_name": null,
    "issue": "doi:10.5066\/F76T0KHH",
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/spcmsc\/landsat_a2a_lc_final_v2016-met.faq.html",
    "format": null,
    "email": null,
    "descript": "This U.S. Geological Survey (USGS) data release includes geospatial datasets that were created to analyze wetland changes along the Virginia and Maryland Atlantic coasts between 1984 and 2015. Wetland change was determined by assessing two metrics: wetland persistence and land-cover switching. Because seasonal water levels, beach width, and vegetation differences can affect change analyses, only images acquired during the spring (March, April, and May) were included in the wetland-change metrics (N=10). USGS Data Series 968 (Bernier and others, 2015) presented data that were derived from Landsat 5 and Landsat 8 imagery from 1984 to 2014, including wetland and terrestrial habitat extents; open-ocean, back-barrier, and estuarine mainland shoreline positions; and sand-line positions along the estuarine mainland and barrier shorelines from Assateague Island, Maryland to Metompkin Island, Virginia. As part of the wetland-change analyses, two additional satellite images (17-April-1985 and 05-May-2015) were processed and classified using the methods described by Bernier and others (2015) to provide a more complete time series dataset. One additional image (26-April-1994) was reprocessed to correct a classification error that was identified when comparing wetland and total analysis extents among all images.",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Bernier, Julie C.",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "1799",
            "name": "coastal processes",
            "scope": "Processes unique to coastal areas including longshore transport, beach erosion, storm surge, shoreline change, delta formation, barrier island migration, beach stabilization by vegetation"
        },
        {
            "thcode": 2,
            "code": "464",
            "name": "geology",
            "scope": "Study of the planet earth, its composition, structure, physical and chemical processes, and history since its origin."
        },
        {
            "thcode": 2,
            "code": "531",
            "name": "hazards",
            "scope": "Potential dangers from both natural processes (e.g., earthquakes, floods, and climate change) and human impacts on the environment."
        },
        {
            "thcode": 2,
            "code": "765",
            "name": "multispectral imaging",
            "scope": "A method of remote sensing that obtains optical representations in two or more ranges of frequencies or wave lengths."
        },
        {
            "thcode": 2,
            "code": "981",
            "name": "remote sensing",
            "scope": "Acquiring information about a natural feature or phenomenon, such as the Earth's surface, without actually being in contact with it. USGS remote sensing is usually carried out with airborne or spaceborne sensors or cameras."
        },
        {
            "thcode": 2,
            "code": "1171",
            "name": "time series analysis",
            "scope": "Statistical analysis using frequency distribution in which time is an independent variable. A sequence of observations collected at regular time intervals is studied."
        },
        {
            "thcode": 2,
            "code": "1326",
            "name": "wetland ecosystems",
            "scope": "Ecosystems whose soil is saturated for long periods seasonally or continuously, including marshes, swamps, and ephemeral ponds.  More detailed terms for wetlands can be selected from the FGDC Wetland Classification <http:\/\/fgdc.gov\/standards\/status\/sub3_4.html>."
        },
        {
            "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"
        }
    ],
    "place_term": [],
    "image": [],
    "fan": [
        "2016-324-DD"
    ]
}