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Acoustical Physics

, Volume 54, Issue 1, pp 82–93 | Cite as

Anomaly in high-frequency geoacoustic emission as a close earthquake precursor

  • V. A. Gordienko
  • T. V. Gordienko
  • N. V. Krasnopistsev
  • A. V. Kuptsov
  • I. A. Larionov
  • Yu. V. Marapulets
  • A. N. Rutenko
  • B. M. Shevtsov
Acoustics of Structurally Inhomogeneous Solid Media. Geological Acoustics

Abstract

One of the possible earthquake precursor mechanisms, namely, acoustic emission, is discussed. The phenomenon of acoustic emission consists in the emission of acoustic pulses due to the formation of microfaults and cracks that precede fracture of objects, rock collapse in mines, earthquakes, etc. By the example of the geoacoustic emission observation on the Kamchatka Peninsula in the area of the Avachinskaya Bay and by the analysis of anomalies of this emission that accompany major seismic events, it is shown that anomalous geoacoustic noise is generated by the stress produced in the medium prior to these events. The high-frequency range (4–11 kHz) is most informative for the observation of geoacoustic noise caused by the crack formation processes.

PACS numbers

91.30.Px 43.40.Le 

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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  • V. A. Gordienko
    • 1
  • T. V. Gordienko
    • 1
  • N. V. Krasnopistsev
    • 2
  • A. V. Kuptsov
    • 3
  • I. A. Larionov
    • 3
  • Yu. V. Marapulets
    • 3
  • A. N. Rutenko
    • 4
  • B. M. Shevtsov
    • 3
  1. 1.Moscow State UniversityVorob’evy gory, MoscowRussia
  2. 2.All-Russia Research Institute of Physicotechnical and Radio-Engineering MeasurementsMendeleevo, Moscow oblastRussia
  3. 3.Institute of Cosmophysical Research and Radio Wave Propagation, Far East DivisionRussian Academy of SciencesParatunka, Kamchatka oblastRussia
  4. 4.Il’ichev Pacific Oceanological Institute, Far East DivisionRussian Academy of SciencesVladivostokRussia

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