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National Geophysical Data Center

Multichannel Seismic-Reflection Profiles
Western Florida Shelf
USGS Open File Report 87-372*

Data Announcement 88-MGG-03

     Approximately 1,500 km of multichannel seismic-reflection data are available for purchase from the National Geophysical Data Center (NGDC) for the western Florida shelf. These data were collected on the U.S. Geological Survey (USGS) R/V GYRE October 19, 1982. The USGS, Department of Interior has made these profiles available for public dissemination.

     The multichannel seismic-reflection system consisted of a 1.200-m streamer, a Texas Instruments Digital Field system, a DFS- V recorder, and a Bolt 500-cu. in. airgun. The gun was positioned 15 m off the stem and the near-phone section was 230 m astern. The shot-point interval was 25 m. The streamer was composed of alternating and inactive segments, each 50 m long. Twenty-four fold data were recorded for 4 sec in SEG-B format. The quality of the seismic records is good to 2 sec. Navigational control was provided by the USGS integrated navigation/gravity system built around a Western Geophysical, Inc. Survey and Data Management System. The Western system uses data from 6 navigation sensors.

     *M.M. Ball, N.K. Soderberg, D.R. Nichols, T.F. O'Brien, J.E. Dodd, and B.J. Irwin, (Woods Hole, Mass 02543: "Multichannel Seismic-Reflection Profiles collected in 1982 aboard R.V. GYRE, Cruise G82-12 on the western Florida Shelf, "U.S. Geological Survey, Office of Energy and Marine Geology, Woods Hole, MA 02543.


Seismic Profiles (11 lines, 31 sections)
      (plastic sepia) Product #976F20159
      (paper sepia) Product #976F19159
      (blackline) Product #976F18159

Magnetic Tape(s)     Product #976H07159
CD-ROM                   Product #129F27001

Trackline Chart        Product #976H18159

Please contact NGDC for prices.