USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1977-037-FA

Other ID: 77-09

Status: Completed

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

Funding Program(s):

Location: Isla de Vieques, Puerto Rico, United States, Caribbean Sea, North America, Noth Atlantic;

Principal Investigator(s): James V. A. Trumbull

Affiliate Investigator(s): Kurt Grove - PR-DNR

Information Specialist(s):

Data Type(s): Sonar: Single Beam, Sampling: Biology, Sampling: Chemistry, Sampling: Geology, Environmental Data: Tide

Scientific Purpose/Goals: Investigate sand waves on pipeline route, Escollo de Arenas, northwest of Isla de Vieques, Puerto Rico. Map and measure sand waves; sample; set stakes to detect motion/sediment transport; photograph and observe sand waves by SCUBA; measure tide heights; and sample water on different tides to measure suspended sediment.

Vehicle(s):

Start Date: 1977-11-07

Start Port/Location: Isla de Vieques, Puerto Rico

End Date: 1977-11-16

End Port/Location: Isla de Vieques, Puerto Rico

Equipment Used: Echosounder, SCUBA, Water sampler, Tide gauge

Information to be Derived: Grain size analysis; Suspended sediment concentrations;

Summary of Activity and Data Gathered: Profiled, described and sampled shifting sand shoal, particularly 4 sand waves in central part, on pipeline route. Determined coarse sand is in oscillatory motion on each semi-diurnal tidal current; secondary 2-m waves are in motion. Sampled water on excurrent and incurrent tides for suspended sediment. Recorded rise and fall of tides. Ship days: 5; Man days: 25.

Staff: James V. A. Trumbull

Affiliate Staff:
Gary Prisby - Woods Hole; Puerto Rico Department of Natural Resources (PR-DNR): Kurt Grove - co-Ch. Sci.
Jose Muniz
Nelson Espinell

Notes: Platform is a 19-foot center-console outboard, trailered/ferried to Vieques; crew lived ashore at Naval Base. Original Center People field contained: James Trumbull - co-Ch. Sci.; Gary Prisby - Woods Hole.
Project = Puerto Rico project, Puerto Rico project

Location Map:

Platform(s):

photo of Mckee
Mckee

Publications

Grove, K.A., and Trumbull, James V. A., 1978, Surficial geologic maps and data on three potential offshore sand sources on the insular shelf of Puerto Rico: .

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Echosounder --- Single Beam
SCUBA --- Biology
Chemistry
Geology
Water sampler --- Chemistry
Tide gauge --- Tide