USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1981-007-FA

Other ID: 81-G-6-1; 81-G-5; 81-5 Leg 1

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Arnold H. Bouma

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Electro-Magnetic: Gravity, Electro-Magnetic: Magnetics, Environmental Data: Current, Location-Elevation: Navigation, Seismics: Air Gun / Water Gun, Seismics: Sparker

Scientific Purpose/Goals: Collect high-resolution seismics, gravity, magnetics, grab samples and current drift bottle data to produce a hazards map and geologic interpretation of the study area.


Start Date: 1981-04-06

Start Port/Location: Galveston, TX

End Date: 1981-04-17

End Port/Location: Galveston, TX

Equipment Used: Air gun, Sparker system, Current Drift Bottle, Magnetometer (wh), Gravity meter (wh), Integrated Navigation System, Single channel hydrophone

Information to be Derived:

Summary of Activity and Data Gathered: There were 1500 km of good quality high-resolution seismics and sidescan sonar, 18 grab samples, 40 drift bottle stations, and 75 km of magnetics and gravity.

Staff: Robert F. Bowles, James E. Dodd, Barry Irwin, David Mason, David Nichols, Kenneth E. Parolski, George B. Tirey

Affiliate Staff:
USGS-Corpus Christi: Arnold Bouma - Ch. Sci.
Ronald Miller - Oceanographer
Jack Kindinger - Oceanographer
Linda Massingill - Geologist
Ronald Wells - Geologist
Betty Reed - Typist
John West - ET; BLM-New Orleans: Lawrence Handley - Geologist

Notes: Original Center People field contained: Rusty Tirey - Ch. Ops., Robert Bowles - Nav., Barry Irwin - Nav., James Dodd - Nav., David Mason - ET, Kenneth Parolski - ET, Dave Nichols - ET.


Mississippi continental shelf, Louisiana continental shelf, Gulf of Mexico, United States, North America, North Atlantic;

North: 30.1 South: 28.9 West: -89 East: -88.3


photo of Gyre


Sanford, J.M., Harrison, A.S., Wiese, D., Flocks, J.G., 2009, Archive of digitized analog boomer and minisparker seismic reflection data collected from the Mississippi-Alabama shelf during cruises onboard the R/V Carancahua and R/V Gyre, April and July 1981: U.S. Geological Survey Data Series 428, URL:

Kindinger, J.L., Miller, Ronald J., Stelting, Charles E., and Bouma, Arnold H., 1982, Depositional history of Louisiana-Mississippi outer continental shelf: 59 URL:, download PDF.

Sanford, J.M., Harrison, Arnell S., Wiese, Dana S., and Flocks, James G., 2009, Archive of digitized analog Boomer and Minisparker seismic reflection data collected from the Alabama-Mississippi-Louisiana Shelf during cruises onboard the R/V CARANCAHUA and R/V GYRE, April and July, 1981: URL:


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Air gun --- Air Gun / Water Gun
Sparker system --- Sparker
Current Drift Bottle --- Current
Magnetometer (wh) --- Magnetics
Gravity meter (wh) --- Gravity
1981-007-FA-GP-001 ( Digital tape(s) of NV-INS, NV,GR, )
Integrated Navigation System --- Navigation
Nav data ( )
1981-007-FA-LN-001 ( Digital tape(s) of NV-INS, NV,GR, )
Single channel hydrophone --- Air Gun / Water Gun
Bubble Gun
Sub Bottom Profiler
Scanned record sections of minisparker data ( )
1981-007-FA-SE-001 ( analog tape of seismic data)