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1 results

  • 3 - Scattering of Scalar Waves in Random Media

  • Haruo Sato, Tohoku University, Japan, Kentaro Emoto, Kyushu University
  • Book:
    Seismic Wave Propagation Through Random Media
    Published online:
    31 October 2024
    Print publication:
    14 November 2024, pp 34-57

  • Summary

    Chapter 3 investigates the applicable conditions of the Born and Eikonal approximations for scalar wave scattering in random velocity fluctuations characterized by the power spectral density function. The Born approximation leads to the anisotropic scattering coefficient, which represents the directional scattering power per unit volume. The Eikonal approximation leads not only to the angular spectral function that governs narrow-angle ray bending but also to travel–distance fluctuation.