Method of determining the physical characteristics of a sea floo

Details Method of determining the physical characteristics of a sea floo Method of determining the physical characteristics of a sea floo

1975-10-14

1977-02-15

Swisher, S. Clement

Measuring and testing

Hardness

By penetrator or indentor

73170A, G01N 330, G01N 348

Patent

active

040076334

ABSTRACT:
A hollow, projectile-shaped body containing an acoustical transducer is rased into the sea such that the body descends in free fall until it strikes and penetrates the sea floor, coming to a rest therein. Acoustic signals emanating from the acoustic transducer are processed utilizing the doppler effect to generate a direct current analog signal which is the function of the velocity of the body from a time immediately preceding the body striking the sea floor surface until the body comes to rest in the sea floor, thereby obtaining an indication of the physical characteristics of the sea floor.

REFERENCES:
patent: 3298222 (1967-01-01), Costello et al.
patent: 3341808 (1967-09-01), Levin et al.
patent: 3455151 (1969-07-01), Richard
patent: 3602876 (1971-08-01), Gerard

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