USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1987-006-FA

Other ID: S1-87

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Barry Irwin

Affiliate Investigator(s):

Information Specialist(s): PARTNER

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

Scientific Purpose/Goals: Collection of gravity and bathymetry data in and around the Cape Verde Islands as specified by DMA requirements.


Start Date: 1987-02-22

Start Port/Location: Mindelo, Cape Verde

End Date: 1987-03-21

End Port/Location: Mindelo, Cape Verde

Equipment Used: Racal/Decca Hyperfix, LaCoste-Romberg gravimeter G-179, Echosounder, Magnavox System 5000 integrated navigation system

Information to be Derived:

Summary of Activity and Data Gathered:

Staff: Barry Irwin, Carol M. Parmenter

Affiliate Staff:
Robin Bouse; Chuck Gilbert; Robert Bowles (contractor); John Ryland (Racal); Brian Franklin (J. Marr)

Notes: For gravity data, contact Michael A. Prugger, Office of GEOINT Sciences, National Geospatial-Intelligence Agency (NGA);; 314-676-0863. Original Center People field contained: Barry Irwin (Ch. Sci.); Carol Parmenter; Robin Bouse; Chuck Gilbert.
Project = Defense Mapping Agency Gravity, Defense Mapping Agency Gravity


Cape Verde Islands, Africa, North Atlantic;

North: 18 South: 13 West: -27 East: -22


photo of Starella


Folger, D.W., Irwin, Barry J., McCullough, James R., Bouse, Robin M., Polloni, Christopher F., Dodd, James E., and O'Brien, T. F., 1990, Map showing free-air gravity anomalies around the Cape Verde Islands: URL:, download PDF.


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Racal/Decca Hyperfix --- Navigation
LaCoste-Romberg gravimeter G-179 --- Gravity
1987-006-FA-GP-001 ( Digital tape(s) of NV/GRAV ARCHIVE, )
Echosounder --- Single Beam
1987-006-FA-SE-001 ( Collection of paper record displays of seismic data( 12K) for lines )
Magnavox System 5000 integrated navigation system --- Navigation
1987-006-FA-LN-001 ( Digital tape(s) of NV/GRAV ARCHIVE, )