Evidence for an Infrasound Waveguide

Abstract

On May 30, 2005, eight strongly dispersed infrasound signals were recorded at one seismo-acoustic array in the Republic of Korea. Phase-matched filtering (Herrin & Goforth, 1977) and a forward modeling technique were used to determine the nature of the dispersion. The most likely explanation for these dispersed infrasound signals is that the dispersion is due to propagation down a low-velocity waveguide: This can be characterized as an ephemeral "SOFAR" layer in the atmosphere.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2005
Accession Number
ADA440255

Entities

People

  • Brian Stump
  • Eugene T. Herrin
  • Tae Sung Kim

Organizations

  • Southern Methodist University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Atmospheres
  • Contract Administration
  • Contracts
  • Dispersions
  • Group Velocity
  • Motion
  • Physical Properties
  • Schools
  • Universities
  • Waveguides

Fields of Study

  • Physics

Readers

  • Seismology
  • Wave Propagation and Nonlinear Chaotic Dynamics.