Accession Number : AD0747982

Title :   Refraction of Gravity Water Waves.

Descriptive Note : Formal rept.,

Corporate Author : LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES N Y

Personal Author(s) : Breeding,J. Ernest , Jr

Report Date : JUL 1972

Pagination or Media Count : 177

Abstract : The kinematic definitions of group velocity and phase velocity are obtained for wave-packets. It is found that group velocity and phase velocity are generally not collinear. The exception arises when the component sine waves have the same direction. The refraction of wave-packets is considered and it is found that the wavelets within the packet have a direction determined by Snell's law with phase velocity and the wave-packets refract according to Snell's law with group velocity. These theoretical results are found consistent with observations of gravity water waves. (Author)

Descriptors :   (*WATER WAVES, REFRACTION), OCEAN WAVES, WIND, POWER SPECTRA, VELOCITY, LEAST SQUARES METHOD, BOUNDARY VALUE PROBLEMS, DETECTORS, NETWORKS, HYDROPHONES, DEEP WATER, ANEMOMETERS, CORRELATION TECHNIQUES, DIAGRAMS, NUMERICAL ANALYSIS, THESES

Subject Categories : Physical and Dynamic Oceanography
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE