USGS - science for a changing world

USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1995-025-FA

View new CMGDS report form

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

Status: Completed

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

Funding Program(s):

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 Port/Location: Beaufort, NC

End Port/Location: Beaufort, NC

Start Date: 1995-11-13

End Date: 1995-12-01

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:

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

Boundaries
North: 33 South: 30.8 West: -76.3 East: -75.25

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.

Taylor, M.H., Dillon, W.P., Anton, C.H., and Danforth, W.W., 1999, Seismic-reflection surveys of the Blake Ridge, R/V Cape Hatteras, 1992 and 1995—Data acquisition, navigation and processing: U.S. Geological Survey Open-File Report 99-372, URL: https://doi.org/10.3133/ofr99372.

Portals/Viewers

Documents associated with this activity

Title Survey Equipment Description
Cruise report (document not focused on specific equipment) Chief scientist's cruise report including personnel, an extensive cruise overview with description of equipment and setting used on the cruise, daily cruise narrative, and results and comments. Tables of OBS deployments, receiver depths, single channel seismic file names and locations, bore hole location, trackmaps, OBS and VSP walkaway data samples.
Geophysics log Water gun (wh) Seismic log including line numbers, position, and equipment performance, November 15-20, 1995.
Geophysics log Water gun (wh) Seismic log including line numbers, position, and equipment performance, November 26 - December 21, 1995.
Walkaway plots (document not focused on specific equipment) Walkaway plots for VSP 994 and 995 on Nov. 18, 29 and 30, 1995.

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-LN-001-01 (Processed GI-gun SEGY data )
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-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-001 (Navigation trackline plot for field activity 95025)
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, )
Ashtech GPS --- Navigation
Water gun (wh) --- Air Gun / Water Gun

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
Questions or Comments? Contact CMGDS Team
https://cmgds.marine.usgs.gov