Final Report on Contract N00014-75-C-0151,

Abstract

During the last year the investigation of the Upper Critical Depth Effect was completed. This phenomenon arises in ocean surface waves generated by spherical explosions which are detonated at small depths below the surface. It was observed that when such an explosion is centered at a below surface depth equal to approximately half the charge radius, the amplitude of the surface wave generated is an order of magnitude larger than the amplitudes corresponding to depth larger than this. Theoretical confirmation of this effect was one of the principal objectives of work supported under the Contract. During the last year the equations of motion governing finite amplitude surface wave propagation were solved by numerical, finite difference, methods rather than perturbation methods. Both methods proved suitable for application to surface wave problems and both calculations provided further confirmation of the Upper Critical Depth Effect.

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Document Details

Document Type
Technical Report
Publication Date
Dec 14, 1979
Accession Number
ADA098318

Entities

People

  • M. Holt

Organizations

  • University of California, Berkeley

Tags

DTIC Thesaurus Topics

  • Amplitude
  • California
  • Contracts
  • Engineering
  • Equations
  • Equations Of Motion
  • Explosions
  • Gas Dynamics
  • Mechanical Engineering
  • Military Research
  • Surface Waves
  • Underwater Explosions
  • Universities
  • Wave Propagation
  • Waves

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Explosive Engineering.
  • Technical Research and Report Writing.