Other ID: FAY 017
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Principal Investigator(s): William Dillon
Data Type(s): Electro-Magnetic: Gravity, Electro-Magnetic: Magnetics, Location-Elevation: Navigation, Seismics: Air Gun / Water Gun, Seismics: Sparker, Seismics: Sub Bottom Profiler
Scientific Purpose/Goals: Geophysical reconnaissance of southeast Georgia Embayment.
Start Port/Location: Fort Lauderdale, FL
End Port/Location: Charleston, SC
Start Date: 1976-06-20
End Date: 1976-06-29
Equipment Used: Air gun, Del Norte 26 sparker, 3.5 kHz, Gravity meter (wh), Marine magnetometer, Integrated Navigation System, Single channel hydrophone
Information to be Derived: Morphology;
Summary of Activity and Data Gathered: FAY sailed from Ft. Lauderdale at noon on June 20, 1976. All systems began operation on June 21, 1976 at 0800 and continued until June 29, 1976 at 0800. One tie line was run along the shelf from Daytona Beach to Cape Fear, then 8 cross-shelf lines were obtained between Cape Fear and Charleston, spaced about 30 km apart. These lines were about 160 km long, extending from shallow water (10 m) to 600 m on the inner Blake Plateau. Average operating speed was about 6.5 kts. Due to a 4-day delay, the survey of a possibly active fault on the outer edge of the Blake Plateau was postponed until fall. The relatively high operating speed and generally excellent weather allowed us to make up some lost time. The sparker system produced excellent high-resolution records and the airgun system was adjusted for a relatively high-frequency bandpass (32 - 205 Hz) to improve resolution. No apparent loss of penetration could be noted with this high bandpass. The addition of the 160 cu. in. airgun to the 3 small guns did not appear to change gun signature but did increase power, so the 4 guns were run together for the remainder of the cruise. The FAY was an exceptionally well run, well maintained ship under Captain Olander and Chief Engineer Weeks, and we received excellent cooperation throughout the cruise from all the officers and crew members. Seismic profiles: 2000 km; Magnetics: 2000 km; Gravity: 2600 km.
Staff: William Dillon, Deborah Hutchinson, Frank W. Jennings, Perry Parks, Charles Paull, Elizabeth Winget
Notes: Original Center People field contained: Bill Dillon - Ch. Sci.; Debbie Hutchinson - seismic watch, Caroline Morse - seismic watch, Douglas Edsall - seismic watch, Elizabeth Winget - seismic watch, Frank Jennings - seismic tech., Felicity Oram - seismic tech., Perry Parks - nav./grav., Donald Moller - nav./grav., Prescott Heald - nav./grav., Charles Paull - nav./grav. and cruise curator.
outer continental shelf, inner Blake Plateau, Florida, Georgia, South Carolina, North Carolina, United States, North America, North Atlantic;
Paskevich, V.F., and Soderberg, Nancy K., 1997, Navigation and geophysical data collected onboard the R/V FAY from 1975-1976: URL: http://pubs.usgs.gov/of/of97-512/.
Popenoe, P., and Manheim, F.T., 2001, Origin and history of the Charleston Bump--geological formations, currents, bottom conditions, and their relationship to Wreckfish habitats on the Blake Plateau, in Sedberry, G.R., ed., Island in the Stream--Oceanography and Fisheries of the Charleston Bump: American Fisheries Society Symposium, v. 25.
Popenoe, P., and Spalding, J.S., 1988, Isopach and structure contour maps of the Miocene and post-Miocene sediments in the southeast Georgia Embayment, Florida-Hatteras Shelf, offshore Georgia: 12 URL: http://pubs.er.usgs.gov/djvu/OFR/1988/ofr_88_397.djvu.