{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Christopher C. Bemelmans", "hasEmail": "mailto:cbemelmans@usgs.gov"}, "description": "An Ellipsoidally Referenced Survey (ERS) using two Teledyne Reson SeaBat T50-P multibeam echosounders, in dual-head configuration, was conducted by the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) covering the nearshore areas around the Chandeleur Islands, Louisiana (LA), during 2 survey legs: June 12-21 and July 31-August 11, 2023. The download file, Chandeleur_Islands_2023_MBES_xyz.zip, includes processed elevation point data (x,y,z), as derived from a 1-meter (m) bathymetric grid. The download file, Chandeleur_Islands_2023_MBES_Backscatter.zip, includes acoustic backscatter intensity data in 32-bit floating point GeoTIFF (Geographic Tagged Image File Format, .tiff) format.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P1NWHXZS", "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.45cf2584-078d-427c-aec3-11f02f61a87e.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_45cf2584-078d-427c-aec3-11f02f61a87e", "keyword": ["Applanix POS MV Wavemaster II", "Chandeleur Islands", "Chandeleur Islands, Louisiana", "Hewes Point", "Mid-Gulf Coast", "SPCMSC", "St. Petersburg Coastal and Marine Science Center", "State of Louisiana", "Teledyne Reson T50-P", "U.S. Geological Survey", "USGS", "USGS:45cf2584-078d-427c-aec3-11f02f61a87e", "bathymetry", "elevation", "geophysics", "geoscientificInformation", "hydrography", "imageryBaseMapsEarthCover", "location", "marine geology", "marine geophysics", "multibeam sonar", "ocean characteristics", "ocean processes", "oceans", "seafloor mapping"], "modified": "2025-03-24T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-89.18871485, 29.09223983, -89.09223983, 29.48448296", "theme": ["geospatial"], "title": "Coastal Bathymetry and Backscatter Data Collected in June-August 2023 From the Chandeleur Islands, Louisiana"}