{
    "tag": 19191,
    "title": "Archive of Digitized Analog Boomer Seismic Reflection Data Collected Offshore of Mississippi, Alabama, and Florida: MAFLA 1975",
    "pubdate": "20250626",
    "sername": null,
    "series_name": null,
    "issue": null,
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/spcmsc\/MAFLA1975_metadata.faq.html",
    "format": null,
    "email": null,
    "descript": "The U.S. Geological Survey (USGS) Coastal and Marine Hazards and Resources Program has actively collected geophysical and sedimentological data in the northern Gulf of America (Gulf of Mexico) for several decades, including shallow subsurface data in the form of high-resolution seismic reflection profiles (HRSP). Prior to the mid-1990s, most HRSP data were collected in analog format as paper rolls of continuous profiles up to 25 meters (m) long. As part of the National Geological and Geophysical Data Preservation Program (NGGDPP; https:\/\/datapreservation.usgs.gov\/), scientists from the USGS St. Petersburg Coastal and Marine Science Center (SPCMSC) converted analog paper records to digital format using a large-format continuous scanner. The scanned image files were subsequently processed to fix distortions and crop out blank spaces prior to exporting them as geophysical industry standard Society of Exploration Geophysicists (SEG) SEG-Y data exchange formatted files. This data release serves as an archive of HRSP profiles annotated with header information, converted SEG-Y files, navigation data, cruise trackline map, and associated report, Pyle and others (1975). The HRSP data were collected between July 25 and August 17, 1975, using an EG&G Uniboom acoustic system, onboard merchant vessel (M\/V) DECCA PROFILER. More than 3,700 kilometers (km) of HRSP were collected in the outer continental shelf waters of Mississippi, Alabama, and Florida (MAFLA-OCS). See Pyle and others (1975) for acquisition methodology. Data conversion methods are described in USGS Data Series 1047 (Bosse and others, 2017).",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Smullen, Blake F.",
            "role": "Author"
        },
        {
            "name": "Forde, Arnell S.",
            "role": "Author"
        },
        {
            "name": "Flocks, James G.",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "1799",
            "name": "coastal processes",
            "scope": "Processes unique to coastal areas including longshore transport, beach erosion, storm surge, shoreline change, delta formation, barrier island migration, beach stabilization by vegetation"
        },
        {
            "thcode": 2,
            "code": "464",
            "name": "geology",
            "scope": "Study of the planet earth, its composition, structure, physical and chemical processes, and history since its origin."
        },
        {
            "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": "816",
            "name": "ocean processes",
            "scope": "Recurrent natural changes that are physical, biological, or chemical, actively affecting the seas and oceans."
        },
        {
            "thcode": 2,
            "code": "1034",
            "name": "sediment transport",
            "scope": "Transport of solid particles of unconsolidated rock and mineral fragments, chemical precipitates, or biological materials."
        },
        {
            "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": 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": []
}