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:

1972-07-01

Pagination or Media Count:

177.0

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 Snells law with phase velocity and the wave-packets refract according to Snells 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