USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1995-025-FA

Other ID: CH-18-95 Legs 1 and 2

Status: Completed

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

Funding Program(s):

Location: Blake Ridge, South Carolina, United States, North America, North Atlantic;

Principal Investigator(s): William Dillon, Deborah Hutchinson

Affiliate Investigator(s): Daniel Lizarralde - WHOI - Leg 2

Information Specialist(s):

Data Type(s): Location-Elevation: Navigation, Seismics: Air Gun / Water Gun, Seismics: Ocean Bottom Seismometer

Scientific Purpose/Goals: Single-channel seismics, GI gun seismics, VSP walkaway operations, OBS data collection.

Vehicle(s):

Start Date: 1995-11-13

Start Port/Location: Beaufort, NC

End Date: 1995-12-01

End Port/Location: Beaufort, NC

Equipment Used: Teledyne 28420 hydrophone, Ocean Bottom Seismometer, Rockwell GPS, Ashtech GPS, Water gun (wh)

Information to be Derived:

Summary of Activity and Data Gathered: Leg 1: Nov. 15-20, 1995; Leg 2: Nov. 26 - Dec. 1, 1995. Journalist from Popular Science and 3 media personnel from Channel 4 Independent Television News - UK observed/filmed Leg 1; Director Research News Service - UNC observed Leg 2.

Staff: Rebecca Drury, John Evans, Deborah Hutchinson, Thomas O'Brien

Affiliate Staff:
Harold Williams - mech. eng. - Leg 1 and Leg 2 - USGS; Daniel Lizarralde - sci./student - Leg 1
ch. sci. - Leg 2 - WHOI; Ingo Pecher - sci. - Leg 1 and Leg 2 - WHOI; W. Stephen Holbrook - assoc. sci. walkaway - Leg 1 and Leg 2 - WHOI; Ralph A. Stephen - sr. sci. walkaway - Leg 1 and Leg 2 - WHOI; Tori Hoehler - sci/student - Leg 1 - UNC; Daniel L. Williamson - obs/publicity - Leg 2 - UNC; Robert Hammond - camera man - Leg 1 - Ch. 4 Independent News; Julian Rush - sci. producer - Leg 1 - Ch. 4 Independent News; Andrew Veitch - sci. reporter - Leg 1 - Ch. 4 Independent News; Judith Gunther - contributing editor - Leg 1 - Popular Science.

Notes: Original Center People field contained: Debbie Hutchinson - Ch. Sci. - Leg 1; John Evans - tech - Leg 1 and Leg 2; Tom O'Brien - engineer - Leg 1 and Leg 2; Rebecca Drury - tech - Leg 2; Greg Miller - tech - Leg 2.
Project = Seismic Studies on the Blake Ridge Gas Hydrates, Seismic Studies on the Blake Ridge Gas Hydrates

Location Map:

Platform(s):

photo of Cape Hatteras
Cape Hatteras

Publications

Anton, C., Dillon, W.P., and Lee, M., 1999, Anomalous, nearly horizontal, seismic reflection at the Blake Ridge--Evidence for a gas trap crosses the base of gas hydrate stability [abs.]: Eos, Transactions, American Geophysical Union, Spring Meeting, v. 80 no. 17-supplement, URL: http://www.agu.org/cgi-bin/SFgate/SFgate?language=English&verbose=0&listenv=table&application=sm99&convert=&converthl=&refinequery=&formintern=&formextern=&transquery=dillon&_lines=&multiple=0&descriptor=%2fdata%2fepubs%2fwais%2findexes%2fsm99%2fsm99|537|3089|T51A-08%20%20Anomalous%2c%20Nearly%20Horizontal%2c%20Seismic%20Reflection%20at%20the%20Blake%20Ridge:%20Evidence%20for%20a%20Gas%20%20Trap%20that%20C%20*%20Anton%2c%20C%20H%20Dillon%2c%20W%20P%20Lee%2c|TEXT|localhost:0|%2fdata%2fepubs%2fwais%2findexes%2fsm99%2fsm99|5522885%205525974%20%2fdata2%2fepubs%2fwais%2fdata%2fsm99%2fsm99.txt.

Taylor, M.H., Dillon, William P., Anton, Christopher H., and Danforth, William, 1999, Seismic-reflection surveys of the Blake Ridge, R/V CAPE HATTERAS 1992 and 1995; data acquisition, navigation and processing: URL: http://pubs.usgs.gov/of/1999/of99-372/.

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Teledyne 28420 hydrophone --- Air Gun / Water Gun
Boomer
Bubble Gun
Sparker
Sub Bottom Profiler
1995-025-FA-SE-001 ( Digital tape(s) of GI GUN L1-4SEGY, GI GUN L5 7-9SEGY, GI GUN L10-18SEGY, GI GUN L1-24SEGY, GI GUN L1-24V994, GI GUN LOBS1ASEG-Y, GI GUN LOBS2A-BSGY, GI GUN LOBS1-2*SGY, GI GUN L25-32,#SGY, OBS L1-SEGY, OBS L2-SEGY, OBS L1-2 RAW, )
1995-025-FA-LN-001-01 ( Processed GI-gun SEGY data )
1995-025-FA-SE-002 ( Digital tape(s) of GI GUN L1-4SEGY, GI GUN L5 7-9SEGY, GI GUN L10-18SEGY, GI GUN L1-24SEGY, GI GUN L1-24V994, GI GUN LOBS1ASEG-Y, GI GUN LOBS2A-BSGY, GI GUN LOBS1-2*SGY, GI GUN L25-32,#SGY, OBS L1-SEGY, OBS L2-SEGY, OBS L1-2 RAW, )
Ocean Bottom Seismometer --- Ocean Bottom Seismometer
Rockwell GPS --- Navigation
1995-025-FA-LN-002 ( Floppy disk(s) containing NAV-GPSL1-4, NAV-GPSL5-19, NAV-GPSL520-24, BRIDGENAVZIPPED, NAV-EDITL1-V994001, NAV-EDITL16-24, NAV-OBSL1, NAV-OBSL2, NAV-SCSL25-28, NAV-VSPV995B01-04, NAV-VSPV995B05-08, UNDERWAYDATA, )
1995-025-FA-LN-001 ( Navigation trackline plot for field activity 95025)
Ashtech GPS --- Navigation
Water gun (wh) --- Air Gun / Water Gun