Bathymetric Effects on Three-Dimensional Ray Traces.

Abstract

Many ray tracing programs allow for a sloping or structured bottom but completely ignore the fact that the vector normal to the bottom can have an out-of-plane component. To ignore this in long range propagation over irregular bottoms is to assume cylindrical symmetry of the bathymetry about the source, a condition rarely realized in at-sea experiments. This paper describes a preliminary effort to devise and apply a numerical technique to demonstrate the three-dimensional effects of ray tracing over actual seamounts, ridges and basin walls. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1978
Accession Number
ADA058585

Entities

People

  • Robert N. Dewitt

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustics
  • Angle Of Incidence
  • Bathymetry
  • Bottom Bounce
  • Bottom Loss
  • Geometry
  • Grids
  • Military Research
  • Norwegian Sea
  • Oceans
  • Ray Tracing
  • Reflection
  • Ridges
  • Seamounts
  • Three Dimensional
  • Triangles
  • Two Dimensional

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Oceanography.
  • Systems Analysis and Design