{
    "tag": 19340,
    "title": "Archive of Boomer seismic reflection data collected aboard RV CORLISS cruise CRLS97007 off northern Oregon and southern Washington inner continental shelf",
    "pubdate": "1998",
    "sername": null,
    "series_name": null,
    "issue": "98-351",
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/whcmsc\/open_file_report\/ofr1998-351\/ofr98-351_metadata.faq.html",
    "format": null,
    "email": null,
    "descript": "This CD-ROM contains digital high resolution seismic-reflection and bathymetric data collected during the USGS CORLISS 97007 cruise during Aug. 27 to Sept. 13, 1997. The study area covers the inner and middle continental shelf extending 150 km along the coast from Tillamook Head, OR northward past the mouth of the Columbia River to Point Grenville, WA.  Seismic data were collected along a grid of track lines run parallel and perpendicular to the coast that were spaced about 5 km apart. The seismic-reflection data are stored as SEG-Y standard format that can be read and manipulated by most seismic processing software.  Much of the information specific to the data are contained in the headers of the SEG-Y format files.  The file system format is ISO 9660 which can be read with DOS, Unix, and MAC operating systems with the appropriate CD-ROM driver software installed.  The navigation and bathymetric data are stored as an ASCII file with the navigation and depth information logged mostly at a 10 second interval.  When the fathometer was not operating the depth field is replaced with a value of 9999.  Depths are presented in meters from the sea surface (assuming a speed of sound in water of 1450 m\/sec).  Both raw and tidally corrected depths are present in the navigation file.",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Cross, VeeAnn A.",
            "role": "Author"
        },
        {
            "name": "Twichell, David C.",
            "role": "Author"
        },
        {
            "name": "Parolski, Kenneth F.",
            "role": "Author"
        },
        {
            "name": "Harrison, Scott E.",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "575",
            "name": "image collections",
            "scope": "Visible representations of objects or earth properties produced by cameras, spectral instruments, or as graphical representations of measurements."
        },
        {
            "thcode": 2,
            "code": "706",
            "name": "marine geology",
            "scope": "Branch of geology concerned with the composition, geologic history, and earth processes of the ocean floor and the continental margin."
        },
        {
            "thcode": 2,
            "code": "707",
            "name": "marine geophysics",
            "scope": "Branch of earth sciences concerned with the physical processes of the oceans and continental margins.  We include here studies of large bodies of brackish and fresh water, such as lakes and rivers."
        },
        {
            "thcode": 2,
            "code": "2078",
            "name": "navigational data",
            "scope": "Geospatial data indicating the locations of instruments, vessels, aircraft, or other vehicles used to collect scientific observations.  These data include horizontal coordinates in sequence, and may include time or vertical position."
        },
        {
            "thcode": 2,
            "code": "1045",
            "name": "seismic reflection methods",
            "scope": "Geophysical technique to study the subsurface of the earth using sound waves induced by explosives, vibrating devices, or percussive equipment.  The reflections of the sound waves from the boundaries of different rocks are measured."
        },
        {
            "thcode": 2,
            "code": "2054",
            "name": "sub-bottom profiling",
            "scope": "Methods of imaging the structure of sediments below the sea floor  or lakebed using ship-borne or towed sensors with a variety of sound sources."
        },
        {
            "thcode": 15,
            "code": "008",
            "name": "geoscientificInformation",
            "scope": "Information pertaining to earth sciences, for example geophysical features and processes, geology, minerals, sciences dealing with the composition, structure and origin of the earth's rocks, risks of earthquakes, volcanic activity, landslides, gravity information, soils, permafrost, hydrogeology, groundwater, erosion"
        },
        {
            "thcode": 15,
            "code": "014",
            "name": "oceans",
            "scope": "Features and characteristics of salt water bodies (excluding inland waters), for example tides, tidal waves, coastal information, reefs, maritime, outer continental shelf submerged lands, shoreline"
        }
    ],
    "place_term": [],
    "image": [],
    "fan": []
}