Accession Number : AD0782326

Title :   Broadband Sound Propagation Trials in Shallow Water near the Island of Elba,

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

Personal Author(s) : Murphy,Edward ; Olesen,Ole V.

Report Date : 15 MAR 1974

Pagination or Media Count : 115

Abstract : An extensive program of shallow-water sound propagation Measurements has been made in summer and winter in areas north and southeast of the island of Elba along tracks 35 km long in water of nearly constant depth, (approximately 100 m). In these areas there are no significant tidal effects, biological activity is negligible, the bottom is smooth, and there is very little reverberation. Therefore, repeated propagation trials can be performed in which only one environmental parameter is changed, such as: the bottom (in which the two areas differ), the sound speed structure (different seasons), or the sea state. (Modified author abstract)

Descriptors :   *UNDERWATER SOUND, *SHALLOW WATER, *ACOUSTIC ATTENUATION, ACOUSTIC VELOCITY, SEA STATES, BROADBAND, SEASONAL VARIATIONS, CURVE FITTING, GRAPHICS, REGRESSION ANALYSIS, ITALY, MEDITERRANEAN SEA

Subject Categories : Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE