Accession Number : ADA018263

Title :   Computerized Calculation and Plotting of Significant Sound Ray Paths and Propagation Loss for Single Temperature-Depth (BT) Profiles.

Descriptive Note : Technical memo.,

Corporate Author : FLEET NUMERICAL WEATHER CENTRAL MONTEREY CALIF

Personal Author(s) : Furuike,D. M.

Report Date : SEP 1965

Pagination or Media Count : 29

Abstract : The propagation of sound in the sea is affected by a number of factors. This paper summarizes methods for computerized ray tracing and sound propagation loss computation for short ranges. It is assumed for this program that the temperature-depth (and sound velocity) field has no horizontal gradients within this range. Sound sources are inserted at two depths. All vertical coordinates and angles are measured positive downwards. No surface reflection is considered.

Descriptors :   *Underwater sound, *Acoustic attenuation, *Ray tracing, Temperature gradients, Acoustic velocity, Differential equations, Approximation

Subject Categories : Physical and Dynamic Oceanography
      Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE