USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1982-028-FA

Other ID: 82-G-9

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Dennis W. O'Leary

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Imagery: Photo, Seismics: Sub Bottom Profiler, Seismics: Sparker, Seismics: Air Gun / Water Gun, Seismics: Boomer, Seismics: Bubble Gun, Sampling: Geology, Location-Elevation: Navigation

Scientific Purpose/Goals: Obtain color photographs of features interpreted from previously acquired data to represent sites of mass movement; acquire single-channel high-resolution seismic profiles along the photo traverses; and acquire gravity core samples of the photographed bottom at selected sites.


Start Date: 1982-08-08

Start Port/Location: Woods Hole, MA

End Date: 1982-08-21

End Port/Location: Woods Hole, MA

Equipment Used: Camera- deep sea, ORE 140 transceiver/1036 transducer sub-bottom profiler, Teledyne single-channel 300-500J 40-tip minisparker, Teledyne 28420 hydrophone, Hydroplastic corer, Western Geophysical Integrated Navigation System

Information to be Derived: Samples and chemical analysis;

Summary of Activity and Data Gathered: This cruise successfully accomplished its objectives. ANGUS photos were taken at 20 second intervals at 6-7 m above sea floor, the three synchronized cameras taking overlapping photos including an area as great as 450 sq. m. There was no photo overlap at nominal cruising speed of 0.75 knots. 6 nm of data were lost during the last day of the survey because heavy seas prevented safe launch of the camera vehicle. During times when the camera vehicle batteries were being recharged, we retraced the camera track with the minisparker in tow to obtain sub-bottom data along track. At selected sites along photo tracks the corer was deployed to obtain bottom samples. A dredge haul was made to identify a distinctive cliff-forming rock unit. ANGUS photography: 271 km; 3.5 kHz: 32.4 km; Minisparker: 241.4 km; 20 stations (19 core sites and 1 chain bag dredge).

Staff: Gregory Miller, Kathryn Scanlon Catanach, Charles J. O'Hara, Dennis W. O'Leary, Ronald C. Circe, John M. Aaron, Carol M. Parmenter, Robert F. Bowles, James E. Dodd

Affiliate Staff:
WHOI: Earl Young
John Porteus
George Meier
Robert Handy
Carol Collins

Project = N. Atlantic Continental Slope Mapping, N. Atlantic Continental Slope Mapping


Alvin Canyon, Atlantis Canyon, Gilbert Canyon, Lydonia Canyon, Munson Canyon, Continental Slope, Bear Seamount, United States, North America, North Atlantic;

North: 40.48333 South: 39.73333 West: -70.7167 East: -66.7


photo of Gyre



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Camera- deep sea --- Photo
1982-028-FA-SE-002 ( microfilm of ANGUS)
1982-028-FA-PH-001 ( film collection of TRIPOD 264; 19820812-19821111)
ORE 140 transceiver/1036 transducer sub-bottom profiler --- Sub Bottom Profiler
1982-028-FA-SE-001 ( Collection of paper record displays of seismic data( 12K) for lines )
1982-028-FA-SE-003 ( analog tape of seismic data)
Teledyne single-channel 300-500J 40-tip minisparker --- Sparker
Teledyne 28420 hydrophone --- Air Gun / Water Gun
Bubble Gun
Sub Bottom Profiler
Hydroplastic corer --- Geology
Western Geophysical Integrated Navigation System --- Navigation
1982-028-FA-LN-002 ( Digital tape(s) of NV-INS, NV-INS-UNEDIT, NV-INS-FINAL, )
1982-028-FA-LN-001 ( Navigation trackline plot for field activity 82028)