Possible sources of elastic wave radiation in a glacier (friction, discontinuity formation, etc.) and their distinctive spectral characteristics are discussed. A combined research required to interpret the signals of acoustic emission in the active glacier areas has been implemented. It is based on the studies of wave phenomena that occur during deformation of natural ice and are reflected in its acoustic characteristics, as well as on physical modeling of acoustic emission sources. The experimental data is used to evaluate the possibility of determining the transition from the stage of accumulation of deformation defects in the glacier body up to its local advance.
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