Field Activity 1981-007-FA

Identifier 1981-007-FA
Alternate names 81-G-6-1; 81-G-5; 81-5 Leg 1
Purpose 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.
Location Mississippi continental shelf, Louisiana continental shelf, Gulf of Mexico, United States, North America, North Atlantic;
Summary 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.
Comments 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.
Platform
Gyre
Length 182 feet; beam 36 feet.
Itinerary
Start Galveston, TX 1981-04-06
End Galveston, TX 1981-04-17
Days in the field 12
Bounds
West -89
East -88.3
North 30.1
South 28.9

Personnel

Organization
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
Principal investigators Arnold H. Bouma
Crew members
David H Mason
Scientist, Staff
David R Nichols
Scientist, Staff
Barry J Irwin
Scientist, Staff
Robert Bowles
Scientist, Staff
James Dodd
Scientist, Staff
George Tirey
Scientist, Staff
Kenneth Parolski
Scientist, Staff
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

Data types and categories

Data category: Electro-Magnetic, Environmental Data, Location-Elevation, Seismics
Data type: Gravity, Magnetics, Current, Navigation, Air Gun / Water Gun, Sparker

Documents: Notes and log books

Name Description
Cruise report Chief Scientist's cruise report of personnel, data collection, equipment notes, ship movement. Includes 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 Log containing 3.5 kHz, 12 kHz, sparker and airgun systems descriptions, including line number times, start and end times, shotpoint numbers, equipment configuration and performance, data acquisition notes.

Equipment used

Equipment Usage description Data types Datasets
Air gun Air Gun / Water Gun (no data reported)
Sparker Sparker (no data reported)
Current Drift Bottle Current (no data reported)
Magnetometer (wh) Magnetics (no data reported)
Gravity meter (wh) Gravity 1
Integrated Navigation System Navigation 2
Single channel hydrophone Air Gun / Water Gun, Boomer, Bubble Gun, Sparker, Sub Bottom Profiler 2

Datasets

Datasets produced in this activity

Dataset name Equipment Description Dataset contact
1981-007-FA-GP-001 Gravity meter (wh) Digital tape(s) of NV-INS, NV,GR, Nancy K. Soderberg
1981-007-FA-LN-001 Integrated Navigation System Digital tape(s) of NV-INS, NV,GR, Nancy K. Soderberg
Nav data Integrated Navigation System Linda P McCarthy
1981-007-FA-SE-001 Single channel hydrophone analog tape of seismic data Nancy K. Soderberg
Scanned record sections of minisparker data Single channel hydrophone Linda P McCarthy

Publications

Samples collected during this field activity