Brief description of the measurement of the anisotropy of transmission or reflection of a wave transverse, in particular to prospection geophysics by measurement of the anisotropy of transmission or reflection of the shear waves in the rocks

摘要

The invention makes it possible to measure the propagation of a transverse wave between two points of reference deals with a medium m not isotropic, in particular a shear wave in a rock stratified or cracked. / p & & p & according to the invention is placed along a same radius vector a source s and two detectors g, g, the detectors being placed at the location of the respective points of reference; the source is excited by an excitation signal for producing a transverse wave in the medium; it receives the measurement signals produced by each of the respective insulation detectors; on the basis of the excitation signal and the measurement signals, we determine the transfer function of the medium along each of the two paths source - thereof, respectively, which the transfer function of the differential of the medium between the two reference points. It may also provide other configurations, in particular two sources and a sensor, or applying the method has the seismic reflection with the waves at an oblique incidence, or even a zero incidence.