{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "PCMSC Science Data Coordinator", "hasEmail": "mailto:pcmsc_data@usgs.gov"}, "description": "This dataset contains shorelines (as vectors, where vertices are positions determined along transects) derived from available satellite imagery for multiple locations (Barter Island, Alaska; Elwha, Washington; Cape Cod, Massachusetts; Madeira Beach, Florida; and Rincon, Puerto Rico) and associated settings used to derive the data across the United States for the time period 1984 to 2023. An open-source toolbox, CoastSeg (Fitzpatrick and others, 2024a; Fitzpatrick and others, 2024b), was used to classify coastal Landsat and Sentinel imagery and detect shorelines at the sub-pixel scale, using the CoastSat (Vos and others, 2019) methodology. Shorelines are derived for multiple slope values, representing the spatial and temporal variance of slope conditions at each site. Resulting shorelines from transect-based derivation are presented in GeoJSON format. Significant uncertainty is associated with the locations of shorelines in extremely dynamic regions at all sites, including at the locations of river mouths, tidal inlets, capes, ends of spits, and adjacent to wetlands at the Barter Island site. For technical users and researchers, data can be ingested into geospatial platforms (for example, QGIS or GlobalMapper) for more detailed analysis.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P1NUEFDP", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.1967409f-6b1d-48c6-a5e1-b137f411809a.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_1967409f-6b1d-48c6-a5e1-b137f411809a", "keyword": ["Beaches", "CMHRP", "ClimatologyMeteorologyAtmosphere", "Coastal and Marine Hazards and Resources Program", "Commonwealth of Massachusetts", "Commonwealth of Puerto Rico", "Erosion", "Oceans", "PCMSC", "Pacific Coastal and Marine Science Center", "Physical Habitats and Geomorphology", "SPCMSC", "Shoreline mapping", "Shorelines", "St. Petersburg Coastal and Marine Science Center", "State of Alaska", "State of Florida", "State of Washington", "U.S. Geological Survey", "USGS", "USGS:1967409f-6b1d-48c6-a5e1-b137f411809a", "WHCMSC", "Woods Hole Coastal and Marine Science Center", "beach", "coast", "coastal processes", "effects of coastal change", "image collections", "long term erosion", "remote sensing", "shoreline accretion", "shoreline erosion", "storm erosion"], "modified": "2025-04-25T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-143.83834890, 18.31396108, -67.23436190, 70.15710875", "theme": ["geospatial"], "title": "Satellite-derived shoreline vector files and settings from CoastSeg in multiple U.S. locations (1984-2023)"}