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Acoustic Emission Dynamics Initiated by Fluid Infusion on Laboratory Scale

  • A. Ponomarev
  • G. Sobolev
  • Yu. Maibuk
Chapter
Part of the Geoplanet: Earth and Planetary Sciences book series (GEPS)

Abstract

The influence of water on the increase of seismic activity has been investigated in various seismotectonic environments, including the observations of the processes of reservoir filling [Gupta, 1992; Simpson et al., 1988; Mirzoyev et al., 1988; Sobolev, 1993]. The physical interpretation considered was mainly related to increase of pore pressure and the corresponding decrease of effective pressure according to modified Coulomb-Moore law [Brace, Martin, 1968]. This effect is the basis of the Dilatation-Diffusion (DD) model of the earthquake preparation [Scholz et al., 1973]. Quantitative estimates of the dependence of this effect on various values of lithostatic and hydrostatic pressure, temperature and rock permeability were made in [Miller et al., 1999]. A review of possible induced seismicity mechanisms can be found in the special issue of Pure Appl. Geophys. [Trifu (ed.), 2002]. The fractal properties of the water-induced seismicity are investigated in [Smirnov, 1994]. Connection of local seismic activity and small changes of water level in the reservoir (phase synchronization) were detected in [Peinke et al, 2006]. It should be noted that small changes in pore pressure also correlate with the variations of small earthquakes activity. It is shown that seismicity in the zone adjacent to lake Baikal depends on the seasonal variations of the water level in the lake, which change the pore pressure by several millibars [Djadkov,1997]. This paper investigates the influence of relatively low water inflow on the acoustic emission in compressed samples.

Keywords

Acoustic Emission Pore Pressure Water Infusion Acoustic Emission Signal Acoustic Emission Event 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.Schmidt Institute of Physics of the EarthRussian Academy of SciencesMoscowRussia

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