Accession Number : AD0854842

Title :   A Detailed Analysis of Acoustic Reflectivity in the Tyrrhenian Abyssal Plain.

Descriptive Note : Technical rept.,

Corporate Author : SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)

Personal Author(s) : Hastrup, Ole F.

Report Date : 01 MAY 1969

Pagination or Media Count : 68

Abstract : Acoustic bottom reflectivity experiments with explosive sources made in the Tyrrhenian abyssal plain have been analyzed in detail using digital analysis techniques. The reflection losses are computed and reported as functions of both angle of incidence and frequency. The impulse response is also computed for different angles of incidence and shows a large number of reflections from deep interfaces. Theoretical loss, phase shift, and impulse response have been computed from acoustical parameters measured on cores taken in the same area and these agree well with the experimental data. (Author)

Descriptors :   (*UNDERWATER SOUND SIGNALS, ATTENUATION), (*OCEAN BOTTOM, REFLECTIVITY), OCEAN BOTTOM TOPOGRAPHY, UNDERWATER EXPLOSIONS, ITALY, OCEANS, DATA PROCESSING, DIGITAL SYSTEMS, OCEANOGRAPHIC DATA, STATISTICAL ANALYSIS, DATA PROCESSING, PHASE SHIFT CIRCUITS, ECHO RANGING, SEDIMENTATION, CLAY, SEA WATER, INTERFACES.

Subject Categories : Physical and Dynamic Oceanography
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE