{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Jenna A. Brown", "hasEmail": "mailto:jenniferbrown@usgs.gov"}, "description": "Low altitude (300 meters above ground level (AGL)) digital aerial imagery were acquired on May 4 and 5, 2020, from a manned, fixed-wing aircraft using a Sony A7R 36 Megapixel digital camera, along with precise aircraft location Global Navigation Satellite System (GNSS) data. Data were collected in shore-parallel lines, flying at approximately 50 meters per second and capturing true color imagery at 1 Hertz, resulting in image footprints with approximately 75-80% endlap, 60-70% sidelap, and a ground sample distance (GSD) of 5.3 centimeters. The precise time of each image capture (flash event) was recorded, and the corresponding aircraft position was computed in post-processing from the aircraft navigation GNSS data; precise image positions can then be determined by accounting for the lever arm offsets between the aircraft GNSS antenna and the camera lens. Position data, provided as latitude/longitude/ellipsoid height, is referenced to the North American Datum of 1983 (NAD83(2011)).", "distribution": [{"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.647e2beed34eac007b55e378.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}, {"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9K23VGX", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_647e2beed34eac007b55e378", "keyword": ["imageryBaseMapsEarthCover", "geography", "Coastal and Marine Hazards and Resources Program", "geospatial datasets", "Structure-from-Motion", "Delaware", "USGS:647e2beed34eac007b55e378", "oceans", "aerial photography", "earth sciences", "image collections", "geoscientificInformation", "U.S. Geological Survey", "Cape Henlopen State Park", "geomorphology", "topographic maps", "Cape Henlopen", "USGS", "coastal processes", "CMHRP", "topography", "remote sensing", "Delaware Seashore State Park", "digital elevation models"], "modified": "2023-08-21T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-75.10397133, 38.42990248, -75.04882072, 38.80812983", "theme": ["geospatial"], "title": "Delaware Atlantic coast, 2020 - Aircraft Positions"}