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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1985-005-FA

Other ID: P-3-85

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Kathryn Scanlon Catanach

Affiliate Investigator(s): Nelson Espinell, USGS-San Juan, Puerto Rico

Information Specialist(s):

Data Type(s): Electro-Magnetic: Gravity, Location-Elevation: Navigation, Seismics: Air Gun / Water Gun, Seismics: Boomer

Scientific Purpose/Goals: Collect high-resolution single-channel seismic reflection data near Puerto Rico and the U.S. Virgin Islands. This endeavor was secondary to the collection of gravity data by the USGS-Menlo Park personnel for the Defense Mapping Agency (DMA). This report covers the seismic reflection aspects of the cruise.


Start Port/Location: Roosevelt Roads, Puerto Rico

End Port/Location: Roosevelt Roads, Puerto Rico

Start Date: 1985-03-14

End Date: 1985-03-28

Equipment Used: Air gun, Single channel hydrophone, Gravity meter (wh), EG&G 234, Magnavox System 5000 integrated navigation system

Information to be Derived:

Summary of Activity and Data Gathered: Seismic reflection data gathered: Lines 35A, 35A-TRANS, 32, 32A-TRANS, 33, 33A-TRANS, 34, 34A-TRANS, 30, 52, 26, 26A-TRANS, 29, 28, 28A-TRANS, 28B, 28-WEST, 27, 27A-TRANS, 55, 53, 54B, 54A-TRANS, 16, 45, 45A-TRANS, 3, 3A-TRANS, 4, 4A-TRANS, 42, 42A-TRANS, 8, 8A-TRANS, 7, 6, 5, 5A-TRANS, 9, 9A-TRANS, 10/11, 10A, 12/13, 13A, 13A/B-TRANS, 14C, 14A-TRANS, 14B-TRANS, and 50.

Staff: Kathryn Scanlon Catanach

Affiliate Staff:
USGS-Menlo Park: Jack Swenson - Gravity
Roy Fields - Electrical Tech.
Hal Williams - Mechanical Tech.; USGS-SJPR: Nelson Espinell - Seismics

Notes: Cruise reports for Field Activities 85004, 85005 and 85007 detail the 3 legs of this project: LEG 2 - 02/28-03/11/1985 (FA 85004); LEG 3 - 03/15/-03/28/1985 (FA 85005); LEG 4 - 04/01-04/08/1985 (FA 85007). Original Center People field contained: Kathy Scanlon - Seismics.


U.S. Virgin Islands, Puerto Rico, United States, Caribbean Sea, North America, North Atlantic;

North: 19 South: 17.5 West: -67 East: -64


photo of John Wesley Powell
John Wesley Powell


Edgar, N.T., and Scanlon, K.M., 1987, Single-channel seismic-reflection profiles collected aboard R/V POWELL, Cruises P-2-85, P-3-85, P-4-85 in the nearshore waters around Puerto Rico and the Virgin Islands: U.S. Geological Survey Open-File Report 87-147, 3 p..


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Air gun --- Air Gun / Water Gun
Gravity meter (wh) --- Gravity
NGDC MGD77 data ( )
EG&G 234 --- Boomer
Magnavox System 5000 integrated navigation system --- Navigation
1985-005-FA-LN-001-01 ( Trackmap for Legs 1, 2, 3 and 4 (pdf file) Composite trackmap for POWELL Legs P-1 (see InfoBank), P-2 (FA 85004), P-3 (FA 85005), and P-4 (FA 85007).)
Single channel hydrophone --- Air Gun / Water Gun
Bubble Gun
Sub Bottom Profiler
1985-005-FA-SE-001 ( Collection of paper record displays of seismic data( AIR) for lines )
1985-005-FA-SE-002 ( microfilm of )

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