TABLE 11.3 RESEARCH DIVES AND INSTRUMENTATION (Cont.) 



Submersible 



Max 



Depth 

 Date (Ft) Location 



Task 



Purpose 



Instrument(s) 



Ref 



DS4000 



1967 



San Clemenf, 

 Calif. 



Geology 



1966 1197 San Diego 



DS-2000 



1971 



San Clemente, 

 Calif. 



Soil Mechanics 



Mineralogical 

 Survey 



Piscesl. II. Ill 1968 



SP-350 



Star III 



1966 2000 Western 

 Atlantic 



Acoustics 



Measure bottom slope and 

 conduct geological recon- 

 naissance 



Compare in situ vs. laboratory 



measurements of sediment 



shear strength 

 Determine the feasibility of//? 



situ mineral surveys from 



submerslbles 



Record back-scattering from 

 underside of ice 



Collect samples of bottom 



Collect samples of bottom 



Conduct various water column 



measurements 

 Obtain data on the spatial 



correlation of ambient noise 



Measure reverberation 

 characteristics of DSL 



External lights (one pointing 34 

 directly downward and one 

 45-degrees forward) were 

 aligned by maneuvering the 

 sub to where they both 

 coincided on the sea floor; 

 at this point the sub is 

 horizontal to the slope and 

 angle is measured internally 



Vane shear apparatus coupled 34 

 with 2 plastic core tubes 



A Californium-252 neutron 36 

 source was affixed to a 12-ft 

 boom and used to activate a 

 known sample, a radiation 

 detector under the brow was 

 used to measure the 

 activated sample 



12-kHz transducer pointing 35 

 vertically upward with 

 recorder inside pressure hull 



Hydraulic hammer for 35 

 breaking bedrock; hydraulic 

 clam-shell grabber to obtain 

 large blocks and boulders 



Hydraulically-driven, rotary, 11 

 hard-rock corer taking cores 

 10-in length and 5/8-in 

 diam. 



Boom-mounted eH, pH, and 23 

 oxygen/temperature sensor 



Geometrically-spaced 37 

 hydrophones (6 ea.) 

 suspended on bow-mounted 

 rack 



Parabolic acoustic reflector/ 40 

 transducer system on bow to 

 insonify and record returns 

 from DSL 



Techdiver 



1969 60 Canada 



Biology Quantitative survey of scallops Wheel odometer suspended 



on the sea floor from sub. to measure dis- 



tance and a recorder (man- 

 ual) internally to count 

 visual observations of scal- 

 lops 



38 



560 



