Field Activity 1981-008-FA

Identifier 1981-008-FA
Alternate names 81-G-6-2; 81-G-5
Purpose Collect high-resolution seismics to produce a hazard map and geologic interpretation of study area.
Location Mississippi shelf, Louisiana shelf, Gulf of Mexico, United States, North America, North Atlantic;
Summary There were 1500 km of good quality high-resolution seismics and sidescan sonar, 46 grab samples, 40 drift bottle stations, and 75 km of magnetics and gravity.
Info derived Sea floor map; Morphology;
Comments Original Center People field contained: Barry Irwin - Nav., Jim Dodd - Nav., David Mason - Elec. Tech., Kenneth Parolski - Elec. Tech., Dave Nichols - Elec. Tech. Project = Louisiana-Mississippi OCS, Louisiana-Mississippi OCS
Platform
Gyre
Length 182 feet; beam 36 feet.
Itinerary
Start Galveston, TX 1981-04-18
End Galveston, TX 1981-04-28
Days in the field 11
Bounds
West -89
East -88.3
North 30.2
South 28.95

Personnel

Organization
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
Principal investigators Ronald J. Miller
Crew members
David H Mason
Scientist, Staff
David R Nichols
Scientist, Staff
Barry J Irwin
Scientist, Staff
James Dodd
Scientist, Staff
Kenneth Parolski
Scientist, Staff
Affiliate staff USGS-Corpus Christi: Ron Miller - Co-Ch. Sci., Jack Kindinger, Linda Massingill - Geol., Ronnie Wells - Geol., Betty Reed - Typist, Chuck Stelting - Phy. Sci. Tech., Doug Owens - Phys. Sci. Tech.

Data types and categories

Data category: Electro-Magnetic, Environmental Data, Location-Elevation, Seismics, Sonar
Data type: Gravity, Magnetics, Current, Navigation, Air Gun / Water Gun, Sparker, Sub Bottom Profiler, Single Beam

Documents: Notes and log books

Name Description
Cruise report Brief chief scientist's cruise report including personnel list, equipment and a few comments. Also contains the NOAA general cruise inventory sheets.
Navigation log Integrated Navigation System logbook for Legs 1 and 2 (81007 and 81008) containing day and time, line number, course, speed, latitude, and longitude with irregular fixes and data acquisition notes.
Geophysics log Seismic log containing line numbers, start and end times, sparker, 3.5 kHz, 12 kHz and airgun configuration and performance.

Equipment used

Equipment Usage description Data types Datasets
3.5 kHz Sub Bottom Profiler (no data reported)
Air gun Air Gun / Water Gun (no data reported)
12 kHz Single Beam (no data reported)
Sparker Sparker (no data reported)
Marine magnetometer Magnetics (no data reported)
Gravity meter (wh) Gravity 1
Current Drift Bottle Current (no data reported)
Integrated Navigation System Navigation 1
Single channel hydrophone Air Gun / Water Gun, Boomer, Bubble Gun, Sparker, Sub Bottom Profiler 1

Datasets

Datasets produced in this activity

Dataset name Equipment Description Dataset contact
1981-008-FA-GP-001 Gravity meter (wh) Digital tape(s) of NV-INS, NV,GR, Nancy K. Soderberg
1981-008-FA-LN-001 Integrated Navigation System Digital tape(s) of NV-INS, NV,GR, Nancy K. Soderberg
1981-008-FA-SE-001 Single channel hydrophone analog tape of seismic data Nancy K. Soderberg

Publications

Samples collected during this field activity