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):

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

Subject Categories:

  • Physical and Dynamic Oceanography
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE