USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1997-006-FA

Other ID: 97-6

Status: Completed

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s):

Location: offshore Louisiana, United States, Gulf of Mexico, North America, North Atlantic;

Principal Investigator(s): David Twichell

Affiliate Investigator(s): Hans Nelson - PMG

Information Specialist(s):

Data Type(s): Biological Field Study: Experiments, Imagery: Photo, Imagery: Video, Location-Elevation: Navigation, Sampling: Geology, Seismics: Air Gun / Water Gun, Seismics: Boomer, Seismics: Bubble Gun, Seismics: Sparker, Seismics: Sub Bottom Profiler, Sonar: Sidescan, Sonar: Single Beam

Scientific Purpose/Goals: A turbidity current pathway on the Louisiana slope was to be mapped with SIS-7000, seismic profiles, and piston cores to understand sand deposit formation. The study area was between 26 and 27.5 deg. N and 91 and 92 deg. W in water depths ranging from 800-2,800 m.

Vehicle(s):

Start Date: 1997-04-05

Start Port/Location: Galveston, TX

End Date: 1997-04-25

End Port/Location: Galveston, TX

Equipment Used: Corer - slow, SIS-7000 sidescan, ISIS, Odom Digitrace, 3.5 kHz, Water gun (wh), Mudseis, DGPS, ARGO, Digital camera

Information to be Derived:

Summary of Activity and Data Gathered:

Staff: VeeAnn Atnipp Cross, William Danforth, David Foster, Eric Haase, Barry Irwin, David Nichols, Thomas O'Brien, Michael Taylor, David Twichell

Affiliate Staff:
Hans Nelson - co-chief scientist - PMG; Scott Harrison - St. Pete; Gita Dunhill - PMCT; Jed Damuth - UTArl; Marty Bohn
Eric Q. - TAMU coring; John Brand
Eddy Lee
Chris Spaquaolo - TAMU students

Notes: 4/5-15 Sidescan and seismics: Twichell - Ch Sci. 4/15-25. Piston coring: Twichell and Nelson - co-Ch Sci. A web page is in the process of being developed for this project, and we will update when it is on line.
Project = Tectonics and sedimentary processes of the salt, Tectonics and sedimentary processes of the salt

Location Map:

Platform(s):

photo of Gyre
Gyre

Publications

(Single Channel seismic) Nealon, Jeffrey W., Dillon, William P., and Twichell, David,1999, Seismic reflection results from the GYRE 1997 cruise of the Bryant Canyon on the Louisiana Gulf Coast: U.S. Geological Survey Open-File Report 99-449, 3 CD-ROMs.

(Samples) Buczkowski, B.J., and Kelsey, S.A., 2007, Archival Policies and Collections Database for the Woods Hole Science Center's Marine Sediment Samples: U.S. Geological Survey Open-File Report 2006-1187, version 1.0.

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Corer - slow --- Geology
1997-006-FA-SC-001 ( CORE samples)
1997-006-FA-NL-001-08 ( Chief Scientist's visual core description log for Leg 2. )
SIS-7000 sidescan --- Sidescan
ISIS --- Sidescan
Odom Digitrace --- Single Beam
3.5 kHz --- Sub Bottom Profiler
1997-006-FA-SE-001 ( Collection of paper record displays of seismic data( 3.5K) for lines )
Water gun (wh) --- Air Gun / Water Gun
Mudseis --- Air Gun / Water Gun
Boomer
Bubble Gun
Sparker
DGPS --- Navigation
1997-006-FA-LN-001 ( Floppy disk(s) containing NAV DGPS, NAV DGPS, NAV DGPS, NAV DGPS, NAV DGPS, NAV DGPS, NAV DGPS, NAV DGPS PLGR BACKUP, )
1997-006-FA-NL-001-02 ( Navigation printout for Legs 1 and 2 containing time, latitude, longitude, speed, direction, and sample event mark.)
ARGO --- Photo
Video
Geology
Digital camera --- Photo