Accession Number : AD0636771

Title :   A METHOD FOR CALCULATING AND PLOTTING SURFACE WAVE RAYS.

Descriptive Note : Technical memo.

Corporate Author : VIRGINIA INST OF MARINE SCIENCE GLOUCESTER POINT

Personal Author(s) : Wilson, W. Stanley

Report Date : FEB 1966

Pagination or Media Count : 64

Abstract : A method using a digital computer and an incremental plotter for calculating and plotting wave rays is described. Given a grid of depth values, the initial position of a wave ray, and the direction of travel and the period of the wave, successive points along the ray path are calculated. For each point on the path, water depth and bottom slope are estimated from the depth grid by linear interpolation, wave speed and curvature are computed according to classic theory, and the location of the next successive point is approximated by an iteration procedure. The numerical results may be plotted automatically. An example of the results, obtained from an application of the method to Virginia Beach, Virginia, is presented. Unless the bathymetry of an area is unusually smooth, this method calculates and plots wave rays faster than they can be manually constructed. (Author)

Descriptors :   (*OCEAN WAVES, HYDRODYNAMICS), (*HYDRODYNAMICS, *COMPUTER PROGRAMMING), OCEANOGRAPHY, COASTAL REGIONS, VIRGINIA

Subject Categories : Physical and Dynamic Oceanography
      Computer Programming and Software
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE