Sonatech Announces New Expendable Doppler Soil Penetrometer

Sonatech, Inc. of Goleta, Calif., recently introduced the Sonatech Expendable Doppler Penetrometer (EDP) system, designed to determine the undrained shear strength of ocean floor soils by measuring instantaneous velocity of a sound source probe as it falls through the water column and penetrates the sea floor. The system utilizes the Doppler principle of a sound source (probe) moving in relationship to a receiver in order to obtain the velocity measurement; the Doppler shift of the probe frequency is a direct function of probe velocity. The time-velocity microstructure produced by this measurement enables an estimate of the undrained shear strength profile and penetrability of sea floor soils.

The Doppler Penetrometer System finds application in Ocean Mooring studies and waste disposal site analysis where its 6,000-meter range allows operation to full ocean depths. Further, its in situ measurements provide higher accuracy than sample collection/analysis systems.

For complete details on the Sonatech Expendable Doppler Penetrometer system, C i r c l e 4 5 o n R e a d e r S e r v i c e C

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