USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1986-024-FA

Other ID: 86-Test

Status: Completed

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

Funding Program(s):

Location: Caribbean Sea, North America, North Atlantic;

Principal Investigator(s): Barry Irwin

Affiliate Investigator(s): John Gann, USGS-Menlo Park

Information Specialist(s): Barry Irwin

Data Type(s): Electro-Magnetic: Gravity, Location-Elevation: Navigation

Scientific Purpose/Goals: Transit from eastern Caribbean work area to western Caribbean to test new navigation equipment and run one gravity line.


Start Date: 1986-10-22

Start Port/Location: Roosevelt Roads, Puerto Rico

End Date: 1986-10-25

End Port/Location: Kingston, Jamaica

Equipment Used: Gravity meter (wh), Magnavox satellite positioning system, GPS (wh)

Information to be Derived: Satellite navigation system test;

Summary of Activity and Data Gathered: Integration of the Atlantic Marine Geology navigation system with the gravity meter and the new STARFIX commercial satellite navigation system was completed during transit. Results acquired during 6 crossings of the same feature provided excellent results and indicated system was successful.

Staff: Barry Irwin, David W. Folger, James E. Dodd

Affiliate Staff:
John Gann - USGS-Menlo Park; C. Gilbert - USGS-Menlo Park; C. Gard - DMA; Jim McCullough
WHOI; G. Forrestier - John Chance Assoc.; T. Carpenter - Sperry

Project = Defense Mapping Agency Gravity, Defense Mapping Agency Gravity

Location Map:


photo of Starella


Folger, D.W., Irwin, Barry J., McCullough, James R., Dodd, James E., Bouse, Robin M., Bowin, Carl O., Polloni, Christopher F., Strahle, William J., Gann, John T., and Gilbert, Charles, 1990, Map showing free-air gravity anomalies in parts of the western Caribbean Sea: .

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Gravity meter (wh) --- Gravity
Magnavox satellite positioning system --- Navigation
GPS (wh) --- Navigation