Accession Number : AD0661621

Title :   DIFFRACTION OF WATER WAVES OVER BOTTOM DISCONTINUITIES.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA UNIV BERKELEY HYDRAULIC ENGINEERING LAB

Personal Author(s) : Hilaly,Nabil A.

Report Date : SEP 1967

Pagination or Media Count : 146

Abstract : The study is concerned with the problems of propagation of water waves over abrupt bottom discontinuities, where the depth changes from one uniform depth (non-zero) to another uniform depth (finite or infinite). The change of depth extends over an infinite line in space. In the first part, theoretical values of the reflection and transmission coefficients and the corresponding phase shifts have been obtained for waves moving over a step-shaped bottom parallel to the wave fronts. The problem is considered as a boundary-value problem in potential-flow theory. The second part is devoted to the problem of the determination of characteristics of waves propagating over a rectangular submarine channel with vertical sides. A mathematical formulation of the problem as a three-dimensional boundary-value problem is given. (Author)

Descriptors :   (*WATER WAVES, *PROPAGATION), (*DIFFRACTION, WATER WAVES), MATHEMATICAL MODELS, THEORY, BOUNDARY LAYER, WAVE PROPAGATION, MATHEMATICAL ANALYSIS, REFLECTION, PHASE SHIFT CIRCUITS, DIGITAL COMPUTERS, FLUID FLOW, SHALLOW WATER, OCEAN BOTTOM

Subject Categories : Physical and Dynamic Oceanography
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE