Geology and resources of the Solomon Islands region of the South Pacific.
Description
United States Geological Survey, Menlo Park, California,Ministry of Lands, Survey, and Natural Resources of the Solomon Islands. Chief Scientists: Don Tiffin, Jack Vedder. Geological and Geophysical data (courserecorder, 3dot5khz, 12khz, gravity, integratednavigation, LoranC, transitsatellite, gravitycore, chaindredge, uniboom, 24channel, airgun, sonobuoy) of field activity L-7-82-SP in Solomon Islands from 05/19/1982 to 06/11/1982
Location
Solomon Islands
Summary
Approximately 3,500 km of 24-channel seismic-reflection profiles in the Solomon Islands region of the South Pacific. The seismic energy source consisted of a tuned array of five airguns with a total volume of 1,313 cu. in. of air compressed to approximately 1,900 psi. The recording system consisted of a 24-channel, 2400-m long streamer with a group interval of 100 m, and a GUS (Global Universal Science) model 4200 digital recording instrument. Shots were fired every 50 m with 100-m group intervals. Navigational control for the survey was provided by a Magnavox-integrated navigation system using transit satellites and Doppler sonar. A 2-msec sampling rate was used in the field and the data were later desampled to 4 msec during the demultiplexing process. A 10-sec data length was recorded, which, combined with a deep-water delay, yielded up to 16 sec of two-way travel time. The sequence of processing of data was editing-demultiplexing, velocity analysis, CDP stacking, deconvolution-filtering, and plotting on an electrostatic plotter.
GIS tools on best navigation file, l-7-82-sp.053, found cumulative trackline distance to the nearest tens of kilometers is 5350 kilometers. Australia-New Zealand-United States Tripartite Agreement of 1982.
Staff information imported from InfoBank
Aaron Dunwald - Chief Engineer
Alan Cooper - Geophysicist
Alfred H. Hosebag - Watchstander
Dave Hogg - Electronics Technician
Don Tiffin - Chief Scientist
Donna Blackman - Watchstander
Frank Coulson - Geologist
Frank Johnson - Chief Mate
Greg Lewis - Navigator
Guy Cochrane - Watchstander
Jack Vedder - Chief Scientist
Jim Colwell - Geologist
Kaye Kinoshita - Navigator
Kevin O'Toole - Mechanical Technician
Larry Beyer - Navigator
Larry Kooker - Electronics Technician
Loren Kroenke - Geophysicist
Mike Marlow - Geophysicist
Paul Wenberg - Mechanical Technician
Ray Wood - Geophysicist
Terry Bruns - Geophysicist
Vern Pilgrim - Ship Captain
Platform
Samuel Phillips Lee
USNS S. P. Lee (T-AGS-31), Length 208 feet, Beam 39 feet, Draft 14 feet, Speed 12 knots
Itinerary
Start
Honiara, Guadalcanal
1982-05-19
End
Rabaul, New Britian
1982-06-11
Bounds
West
152.163
East
160.94296
North
-4.20052
South
-10.18645
Activity
Geological and Geophysical
Personnel
Organization
Ministry of Lands, Survey, and Natural Resources of the Solomon Islands
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