Other ID: P-2-85
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Principal Investigator(s): N. Terence Edgar
Affiliate Investigator(s): Juan Trias
Data Type(s): Electro-Magnetic: Gravity, Location-Elevation: Navigation, Seismics: Air Gun / Water Gun
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: 1985-02-28
End Date: 1985-03-11
Equipment Used: Air gun, Single channel hydrophone, Gravity meter (wh), Magnavox System 5000 integrated navigation system
Information to be Derived:
Summary of Activity and Data Gathered: Seismic reflection data gathered: Lines 22, 19, 2, 1, 18, 48, 722, 4748A, 47, 722C, 24, 54A, 41, 40-TRANS, 40, 39-TRANS, 39, 38A, 15A, 26-EAST, 14A, 15-WEST, 14B, and 15B.
USGS-Menlo Park: Byron Ruppel - Gravity
Dick Tagg - Gravity
Dave Hogg - Electrical Tech.
John Erickson - Mechanical Tech.; USGS-Reston: Terence Edgar - Seismics; USGS-SJPR: Juan Trias - Seismics
Notes: Three cruises totaled 32 days at sea; 4,600 mi of seismic data. 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).
U.S. Virgin Islands, Puerto Rico, United States, Caribbean Sea, North America, North Atlantic;
|North: 19||South: 17.5||West: -67||East: -64|
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..
|Survey Equipment||Survey Info||Data Type(s)||Data Collected|
|Air gun||---||Air Gun / Water Gun|
|Gravity meter (wh)||---||Gravity||NGDC MGD77 data ( )|
|Magnavox System 5000 integrated navigation system||---||Navigation||1985-004-FA-LN-001-01 ( Trackmap for Leg 2 (pdf file) Trackline map for POWELL Leg P-2 only, including line numbers.)|
1985-004-FA-LN-001-02 ( 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|
Sub Bottom Profiler
|1985-004-FA-SE-001 ( Collection of paper record displays of seismic data( AIR) for lines )|
1985-004-FA-SE-002 ( microfilm of )