{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "PCMSC Science Data Coordinator", "hasEmail": "mailto:pcmsc_data@usgs.gov"}, "description": "This part of USGS Data Series 935 (Cochrane, 2014) presents observations from underwater video collected in the Offshore of Tacoma, Washington, map area, a part of the Southern Salish Sea Map Series. To validate the interpretations of sonar data in order to turn it into geologically and biologically useful information, the U.S. Geological Survey (USGS) towed a camera sled over specific locations throughout the Tacoma map area to collect video and photographic data that would \u201cground truth\u201d the seafloor. The ground-truth survey conducted in the Tacoma map area occurred in 2009 and 2011 on the R/V Karluk (USGS field activity K109PS, and K0111PS) and on the Washington State Department of Fish and Game R/V Molluscan in 2011 and 2012 (USGS field activity M0111PS, M0112PS, and M0212PS). The camera sled was towed 1 to 2 m above the seafloor at speeds of between 1 and 2 nautical miles/hour. The surveys for this map area includes approximately 30 hours (47 trackline km) of video.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9KA6GH2", "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.f55b843d-86a2-4101-96e2-f96144a0cce9.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_f55b843d-86a2-4101-96e2-f96144a0cce9", "keyword": ["CMHRP", "Coastal and Marine Hazards and Resources Program", "King County", "Marine Habitat", "Physical Habitats and Geomorphology", "Pierce County", "Puget Sound", "Salish Sea", "Substrate", "Tacoma", "U.S. Geological Survey", "USGS", "USGS:f55b843d-86a2-4101-96e2-f96144a0cce9", "Washington", "biota", "ecosystem", "ecosystems", "field observation", "fisheries", "geoscientificInformation", "marine habitat", "oceans", "sea-floor characteristics", "seabed", "video sled observations"], "modified": "2023-05-16T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-122.77379, 47.110177, -122.395955, 47.34923", "theme": ["geospatial"], "title": "Underwater video observations offshore of Tacoma, Washington"}