Abstract
The results of experimental investigations of geoacoustic emission (GAE) in deep boreholes were considered. Temporal changes of geoacoustic signal amplitude level, signal envelope spectra and dominating in them periodicities were analysed. GAE potential as an indicator of geodynamic processes in crystalline rock massifs was shown. Introduction Mechanical vibrations of geoenvironment volume, caused by the sources of different nature, form the levels of geoacoustic emission (GAE) signal, different in amplitude. In spatial distribution the maximum GAE signal level does not depend on borehole depth and selected in it observation point. GAE anomalies spatially (as per depth) coincide with disturbed rock zones (fractured, crushed) and represent geodynamic process intensity and its change in time. These changes may affect variations of amplitude value of recorded signal within the limits of selected GAE anomaly or spatial movement of GAE anomaly boundaries. Emergence of new GAE anomalies along a borehole's shaft and disappearance of the before revealed ones point to specific character of geodynamic processes manifestation in this rock massif.
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