System for measuring in situ acoustic energy properties of ocean

Details System for measuring in situ acoustic energy properties of ocean System for measuring in situ acoustic energy properties of ocean

1978-05-22

1980-01-29

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Underwater system

73599, 181108, 181139, 367 15, G01N 330, G01V 138

Patent

active

041863739

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 to generate a direct current analog signal which is a function of the acoustical attenuation of the acoustic signals 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: 3154170 (1964-10-01), Noiseux
patent: 3373400 (1968-03-01), Epstein et al.
patent: 3555499 (1971-01-01), MacDonald et al.
patent: 3561268 (1971-02-01), Massa
patent: 3859598 (1975-01-01), McElwain et al.
patent: 3901075 (1975-08-01), Hampton et al.
patent: 4007633 (1977-02-01), Thompson

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