{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Twichell, Dave", "hasEmail": "mailto:dtwichell@usgs.gov"}, "description": "This CD-ROM contains digital high resolution seismic-reflection and bathymetric data collected during the USGS CORLISS 98014 cruise during Aug. 25 to Sept. 15, 1998.\u00a0 The study area covers the Columbia River estuary, Willapa Bay, and the inner shelf off southern Washington.\u00a0 The seismic-reflection data are stored as SEG-Y standard format that can be read and manipulated by most seismic processing software.\u00a0 Much of the information specific to the data are contained in the headers of the SEG-Y format files.\u00a0 The file system format is ISO 9660 Romeo which can be read with Windows 95/98, Windows NT, Unix, and Macintosh operating systems with the appropriate CD-ROM driver software installed.\u00a0 The navigation and bathymetric data are stored as an ASCII file with the navigation and depth information logged mostly at a 10 second interval. \u00a0 Blatantly bad bathymetric values were replaced with a value of 9999.\u00a0 Depths are presented in meters from the sea surface (assuming a speed of sound in water of 1450 m/sec).\u00a0 Both raw and tidally corrected depths are present in the navigation file.", "distribution": [{"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.4defcf5f-74d0-44a4-a0f4-1e6f8357fda0.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}, {"@type": "dcat:Distribution", "accessURL": "http://cmgds.marine.usgs.gov/data/1998_014_FA_s/", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_4defcf5f-74d0-44a4-a0f4-1e6f8357fda0", "keyword": ["seismic reflection profiling", "distributions", "3.5 kHz", "marine geophysics", "Washington", "Columbia River Estuary", "OR", "Inner shelf off southern Washington", "Oregon", "Willapa Bay", "Geopulse", "SEG-Y", "WA", "seismic reflection methods", "Boomer", "ISO 9660 Romeo CD-ROM", "sub-bottom profiling", "Sparker", "Pacific Ocean", "USGS:4defcf5f-74d0-44a4-a0f4-1e6f8357fda0", "substrate", "seismic reflection"], "modified": "2021-11-16T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-124.5, 46.0, -123.25, 47.2", "theme": ["geospatial"], "title": "USGS Seafloor Mapping CORLISS 98014 Seismic Data"}