Accession Number : ADA181375

Title :   A Horizontal Spatial Requirement Study of the Gulf Stream as Modelled by the IFDPE (Implicit Finite Difference Parabolic Equation) Acoustic Model.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Cease,Katherine L.

Report Date : MAR 1987

Pagination or Media Count : 144

Abstract : The sampling increment in horizontal spacing for a range-dependent environment was studied with respect to accurate prediction of propagation loss through a frontal system. A transmission loss model was verified by comparing its predictions with experimental data when the sampling increment was very small. A study of the effect of altering the sampling increment produced a maximum increment which retained a reasonable agreement with the prediction for very small incrementation. Sensitivity studies were performed at three source depths to determine depth dependency.

Descriptors :   *TRANSMISSION LOSS, *GULF STREAM, *UNDERWATER ACOUSTICS, *SOUND TRANSMISSION, ACOUSTIC EQUIPMENT, DEPTH, DIFFERENCE EQUATIONS, FINITE DIFFERENCE THEORY, HORIZONTAL ORIENTATION, PARABOLAS, PREDICTIONS, REQUIREMENTS, SENSITIVITY, SPATIAL DISTRIBUTION, OCEAN MODELS, ACOUSTIC ATTENUATION, THESES, GRAPHS, TABLES(DATA)

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE