Seismic data derived from observations of wind gusts causing small oscillations of a large shear block separated by a fracture from a main rock mass are discussed. The recording of medium-frequency microseisms (0.5–20 Hz) in combination with variations in atmospheric pressure (within the same frequency range) and the statistical processing of data using spectral and coherent temporal analysis enabled the identification of a microseismic component related to rock fracturing at the base of the oscillating block. Analysis of the temporal behavior of these signals provided estimates of the natural period of the block and the depth of the separating fracture. These data are significant for engineering geology applications and are interesting as a new example of atmosphere–lithosphere coupling mechanisms.
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