Other ID: LYNCH70485; LYNC 704-85
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Location: Carolina Trough, United States, North America, North Atlantic;
Principal Investigator(s): Anne M. Trehu
Affiliate Investigator(s): Al Ballard - NORDA
Information Specialist(s): Anne M. Trehu
Data Type(s): Seismics: Air Gun / Water Gun, Seismics: Ocean Bottom Seismometer, Seismics: Boomer, Seismics: Bubble Gun, Seismics: Sparker, Seismics: Sub Bottom Profiler, Location-Elevation: Navigation
Scientific Purpose/Goals: Determine the velocity structure of the crust at the continent-ocean boundary beneath the Carolina Trough. This information is needed to model the tectonic and thermal process of rifting. Cruise also included the first major deployment of OBSes designed by Bruce Ambuter, after fixing major problems identified in earlier experiments.
Start Date: 1985-06-09
Start Port/Location: Yorktown, VA
End Date: 1985-06-30
End Port/Location: New London, CT
Equipment Used: Air gun, Ocean Bottom Seismometer, Single channel hydrophone, 3.5 kHz, USGS mini-INS system
Information to be Derived:
Summary of Activity and Data Gathered: Explosive refraction data: 465 km; airgun refraction and single-channel streamer data: 305 km; continuous wave source data: 340 km; 3.5 kHz data: 1500 km; USGS OBS stations: 19; Scripps OBS stations: 6; CTDs: 4.
Staff: Barry Irwin, Gregory Miller, James E. Dodd, Corina Savela, Anne M. Trehu
Notes: Cruise included two legs: LEG 1 - 06/09-19/1985, Yorktown, VA returning to Yorktown, VA; LEG 2 - 06/19-30/1985, from Yorktown, VA returning to New London, CT. Original Center People field contained: Anne Trehu, Chief Scientist; Barry Irwin (Leg 1 only); Jim Dodd (Leg 2 only); Corina Savela; Greg Miller.
Trehu, A.M., Miller, G. K., Gettrust, J. F., Ballard, A., Dorman, L. M., and Schreiner, T., 1986, Deep crustal structure beneath the Carolina Trough [abs.]: , Eos, Transactions, American Geophysical Union. San Francisco, Calif., 8-12 December 1986.
Trehu, A.M., Ballard, A., Dorman, L. M., Gettrust, J. F., Klitgord, K. D., and Schreiner, A., 1989, Structure of the lower crust beneath the Carolina Trough, U.S. Atlantic continental margin: Journal of Geophysical Research, v. 94 no. B8, URL: http://www.agu.org/journals/ABS/1989/JB094iB08p10585.shtml.