Accession Number : AD0658718

Title :   OBSERVATIONS OF THE SOUND FIELD IN THE DEEP SEA,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Urick,Robert J.

Report Date : 16 JUN 1967

Pagination or Media Count : 34

Abstract : The acoustic structure of the deep sea at ranges out to 110 miles was examined at different ranges, depths and frequencies by means of explosive charges dropped from an aircraft and recorded by a deep ship-borne hydrophone. The expected sequence of convergence half-zones was obtained, even at frequencies as low as the 25-100 Hz band. At all frequencies better transmission was found when both source and receiver lie well within the deep sound channel. (Author)

Descriptors :   (*UNDERWATER SOUND, PROPAGATION), DEEP WATER, ACOUSTIC RANGES, UNDERWATER SOUND SIGNALS, FREQUENCY, HYDROPHONES

Subject Categories : Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE