In situ Measurement of Sediment Sound Speed During Coring
Final rept. 15 Apr 1971-14 Mar 1973
TEXAS UNIV AT AUSTIN APPLIED RESEARCH LABS
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A system was developed for attachment to sediment corers to obtain an in situ sound speed profile during a coring operation. The system uses two electroacoustic transducers mounted in the cutting head of the corer and associated electronic circuitry to measure the travel time of an acoustic pulse traversing the diameter of the sediment core. Laboratory and field tests which demonstrate the capabilities of the measurement technique are reported. Sound speed profiles were obtained in the Gulf of Mexico using a piston corer and in coastal waters using a special shallow water coring rig. Limited examination of the feasibility of measuring acoustic attenuation and volume scattering is also reported.
- Physical and Dynamic Oceanography