USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1990-007-FA

Other ID: F-5-90

Status: Completed

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

Funding Program(s):

Location: Cayman Trough Spreading Center, Caribbean Sea, North America, North Atlantic;

Principal Investigator(s): David W. Folger

Affiliate Investigator(s):

Information Specialist(s):

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

Scientific Purpose/Goals: To conduct a gravity/magnetics survey of the Cayman Trough area.


Start Date: 1990-05-20

Start Port/Location: Tampa, FL

End Date: 1990-05-29

End Port/Location: Panama City, Panama

Equipment Used: LaCoste-Romberg gravimeter G-179, Geometrics G-856 magnetometer, Northstar 7000 LORAN-C, Trimble 4000AX GPS receiver

Information to be Derived:

Summary of Activity and Data Gathered: Data collected: 1483 km of gravity and magnetics data in the Cayman area; 1800 km of gravity data from Tampa to Caymans and Caymans to Panama.

Staff: Barry Irwin, David W. Folger, Catherine Delorey

Affiliate Staff:
Michael Hamer - PMG
Navigator/Computer Tech.

Notes: Original Center People field contained: Dave Folger, Ch. Sci.; Barry Irwin, Grav./Nav. Tech.; Cathy Delorey, Watchstander.
Project = 1990 Cayman Trough Survey, 1990 Cayman Trough Survey

Location Map:


photo of Farnella




Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
LaCoste-Romberg gravimeter G-179 --- Gravity
Geometrics G-856 magnetometer --- Magnetics
Northstar 7000 LORAN-C --- Navigation
1990-007-FA-LN-002 ( Navigation data)
1990-007-FA-LN-001 ( Navigation trackline plot for field activity 90007)
Trimble 4000AX GPS receiver --- Navigation