USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1981-037-FA

Other ID: 81-11

Status: Completed

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

Funding Program(s):

Location: Escollo de Arenas, NW corner of Isla de Vieques, Puerto Rico, United States, North America, North Atlantic;

Principal Investigator(s): Juan Luis Trias, James V. A. Trumbull

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Seismics: Sparker, Seismics: Boomer, Sampling: Geology, Location-Elevation: Navigation

Scientific Purpose/Goals: Make seismic profiles with highest possible resolution in a very shallow sand body for investigation of sand resources, and collect sedimentary samples to make grain analyses in the geo-laboratory of the Dept. of Natural Resources.


Start Date: 1981-10-21

Start Port/Location: San Juan, Puerto Rico

End Date: 1981-10-26

End Port/Location: San Juan, Puerto Rico

Equipment Used: Sparker system, Boomer, Grab sampler - Shipek, Motorola Mini-Ranger III

Information to be Derived:

Summary of Activity and Data Gathered: SAGITTA used for shooting seismic lines, JEAN A for floating hotel, equipment depot, and sampling sediments. 23 sediment samples collected (UPR 150-173) and 58 seismic lines.

Staff: Gregory Miller, Juan Luis Trias, James V. A. Trumbull, George B. Tirey

Affiliate Staff:
Jose Muniz - Field Technician
PR DNR; Frank Torres - owner of SAGITTA

Notes: Original Center People field contained: James Trumbull, Co-Chief Scientist; Juan Luis Trias, Co-Chief Scientist; Rusty Tirey, Scientist; Greg Miller, Electronics Technician.

Location Map:


photo of Jean A
Jean A
photo of Sagitta


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Sparker system --- Sparker
Boomer --- Boomer
Grab sampler - Shipek --- Geology
Motorola Mini-Ranger III --- Navigation