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
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.