Field Activity 1997-006-FA

Identifier 1997-006-FA
Alternate names 97-6
Purpose 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.
Location offshore Louisiana, United States, Gulf of Mexico, North America, North Atlantic;
Comments 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 Information from Foghorn: DGPS and P-code GPS navigation, SIS7000 w/chirp sub-bottom, ISIS logger, acoustic ranging system, XSONAR;digital bathymetry, 3.5 kHz;GI gun, Mudseis; DGPS and P-code GPS for ship; 4/5-15 Sidescan and seismics: Twichell - Ch Sci. 4/15-25. Piston coring: Twichell and Nelson - co-Ch Sci
Platform
Gyre
Length 182 feet; beam 36 feet.
Itinerary
Start Galveston, TX 1997-04-05
End Galveston, TX 1997-04-25
Days in the field 21
Bounds
West -92.97512741
East -91.4997586
North 27.48769817
South 25.97560459

Personnel

Organization
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
Principal investigators David C Twichell
Crew members
William W Danforth
Scientist, Staff
David C Twichell
Scientist, Staff
Thomas F O'Brien
Scientist, Staff
David S Foster
Scientist, Staff
David R Nichols
Scientist, Staff
Barry J Irwin
Scientist, Staff
VeeAnn A. Cross
Scientist, Staff
Haase, Eric
Scientist, Staff
Taylor, Michael
Scientist, Staff
Affiliate principal Hans Nelson - PMG
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

Data types and categories

Data category: Imagery, Location-Elevation, Sampling, Seismics, Sonar
Data type: Multichannel, Photo, Video, Navigation, Geology, Air Gun / Water Gun, Boomer, Bubble Gun, Sparker, Sub Bottom Profiler, Sidescan, Single Beam

Documents: Notes and log books

Name Description
Navigation log Cruise navigator's notes, Leg 1. Includes antenna and equipment configuration, time of start and end of lines and comments.
Navigation log Navigation printout for Legs 1 and 2 containing time, latitude, longitude, speed, direction, and sample event mark.
Geophysics log Seismic/geophysics log for Legs 1 and 2. Leg 1 is water gun, Leg 2 is 3.5 kHz and piston core locations.
Cruise log Chief Scientist's seismic/geophysics log for Leg 1 with system, julian day, time, line, storage device, and comments.. Includes systems documented in the log.
Core description Chief Scientist's visual core description log for Leg 2.
Core log Chief Scientist's core log with position information, equipment, core recovery and section notes. From Leg 2.

Equipment used

Equipment Usage description Data types Datasets
Multichannel seismics Multichannel 1
SIS-7000 sidescan Sidescan (no data reported)
ISIS Sidescan (no data reported)
Odom Digitrace 200kHz Single Beam (no data reported)
3.5 kHz Sub Bottom Profiler 1
Mudseis Air Gun / Water Gun, Boomer, Bubble Gun, Sparker (no data reported)
DGPS Navigation 3
Piston corer Geology 2
Digital camera Photo (no data reported)
GI Air Gun Air Gun / Water Gun (no data reported)

Datasets

Datasets produced in this activity

Dataset name Equipment Description Dataset contact
Air gun data Multichannel seismics Linda P McCarthy
1997-006-FA-SE-001 3.5 kHz Collection of paper record displays of seismic data( 3.5K) for lines Nancy K. Soderberg
1997-006-FA-LN-001 DGPS Floppy disk(s) containing NAV DGPS, NAV DGPS, NAV DGPS, NAV DGPS, NAV DGPS, NAV DGPS, NAV DGPS, NAV DGPS PLGR BACKUP, Nancy K. Soderberg
1997-006-FA-NL-001-02 DGPS Navigation printout for Legs 1 and 2 containing time, latitude, longitude, speed, direction, and sample event mark. Nancy K. Soderberg
Water gun navigation DGPS Linda P McCarthy
1997-006-FA-NL-001-08 Piston corer Chief Scientist's visual core description log for Leg 2. Nancy K. Soderberg
1997-006-FA-SC-001 Piston corer CORE samples Brian Buczkowski

Publications

Samples collected during this field activity