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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1976-038-FA

Other ID: FAY 025

Status: Completed

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

Funding Program(s):

Principal Investigator(s): John Grow

Affiliate Investigator(s):

Information Specialist(s):

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

Scientific Purpose/Goals: FAY 025 was a geophysical cruise to collect airgun, minisparker, gravity and magnetic data on the Blake Plateau. Planned tasks included: fault survey at the eastern edge of the Blake Plateau; deep-water airgun line from north of the Blake outer ridge down to Deep Sea Drilling Site 391; 2-3 gravity lines on the southern part of the Blake Plateau; minisparker profile from GLOMAR CONCEPTION drill site 6004 up to CALDRILL site 5; marker buoy deployment off New Jersey; and gravity data between Woods Hole and the Blake Plateau.


Start Port/Location: Woods Hole, MA

End Port/Location: Woods Hole, MA

Start Date: 1976-09-21

End Date: 1976-10-10

Equipment Used: Echosounder, Gravity meter (wh), Seismic Engineering streamer, Teledyne single-channel 300-500J 40-tip minisparker, Integrated Navigation System, Marine magnetometer

Information to be Derived: Morphology;

Summary of Activity and Data Gathered: The cruise included a detailed fault survey over the eastern edge of Blake Plateau; airgun line from north of Blake Outer Ridge, across ridge to DSDP #391; gravity lines on southern part of the plateau, passing over DSDP #390 on Blake Spur; minisparker line from GLOMAR CONCEPTION #6004 (FA 76027) to CALDRILL #5 (FA 65001); buoy deployment at GLOMAR CONCEPTION site off NJ; and gravity survey along CDP lines 12 and 13 (GULF SEAL FA 75023). Gravity: 5560 km (Woods Hole to Woods Hole, except briefly on Sep. 30, 1976); Airgun: 3310 km; Minisparker: 3310 km; Magnetometer: 3310 km. Airgun, minisparker and magnetometer operated simultaneously from 1600Z Sep. 24 to 0030Z Oct. 8, 1976.

Staff: Sandra Conley, Dennis Edwards, Alan Goodman, John Grow, Barry Irwin, William Jaworski, Peter Johnson, Ralph Lewis, Perry Parks, Peter Popenoe

Affiliate Staff:
Deborah Doyle - Seismic watch
David Forrer - Seismic watch
David Kinney - Airgun/compressor watch
Nicholas Lefteriou - Seismic ET

Notes: Original Center People field contained: John Grow - Ch. Sci., Sandra Conley - data curator, Deborah Doyle - Seismic watch, Dennis Edwards - Airgun/compressor watch, David Forrer - Seismic watch, Alan Goodman - Seismic ET, Barry Irwin - Navigation watch, Bill Jaworski - Airgun/compressor watch, Peter Johnson - Seismic watch, David Kinney - Airgun/compressor watch, Nicholas Lefteriou - Seismic ET, Ralph Lewis - Navigation watch, Perry Parks - Navigation/Gravity engineer, Peter Popenoe - Navigation watch.


Blake Plateau, Blake outer ridge, United States, North America, North Atlantic;

North: 41.5 South: 28.5 West: -80 East: -70.6


photo of Fay


Paskevich, V.F., and Soderberg, Nancy K., 1997, Navigation and geophysical data collected onboard the R/V FAY from 1975-1976: U.S. Geological Survey Open-File Report 97-512, CD-ROM, URL:


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Seismic Engineering streamer --- Air Gun / Water Gun
1976-038-FA-SE-002 ( microfilm of LINES 1-24)
1976-038-FA-SE-001 ( Collection of paper record displays of seismic data( AIR) for lines )
1976-038-FA-SE-003 ( analog tape of seismic data)
Teledyne single-channel 300-500J 40-tip minisparker --- Sparker
Marine magnetometer --- Magnetics
1976-038-FA-GP-002 ( Digital tape(s) of NV, NV-FINAL, GR, NV PART 2, BT-FINAL, GR-FINAL, MG, GRAV FINAL, )
Gravity meter (wh) --- Gravity
1976-038-FA-GP-001 ( Digital tape(s) of NV, NV-FINAL, GR, NV PART 2, BT-FINAL, GR-FINAL, MG, GRAV FINAL, )
Integrated Navigation System --- Navigation
1976-038-FA-LN-001-03 ( Track Map - Northern Area (pdf file) Trackline map of northern area ship movement, September 21-23 and October 9-10, 1976 with times and line numbers. )
1976-038-FA-LN-001-02 ( Track Map - Southern Area (pdf file) Trackline map of southern area ship movement, September 24 - October 7, 1976 with times and line numbers.)
1976-038-FA-LN-001-01 ( Fault Survey Track Map (pdf file) Trackline map of fault survey Lines 1-8, September 24-28, 1976 over Blake Plateau.)
1976-038-FA-LN-002-01 ( Navigation Data)
Echosounder --- Single Beam
1976-038-FA-BA-001 ( Digital tape(s) of NV, NV-FINAL, GR, NV PART 2, BT-FINAL, GR-FINAL, MG, GRAV FINAL, )

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