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Figure 3 – Data acquired using the test arrangement illustrated on figure 2 to simulate S-wave propagation through a fractured medium. (a) The
illuminating S-wave displacement vector is parallel to the test-sample fractures to simulate fast-S propagation. As the source stays fixed on one end
of the sample, the receiver at the opposite end of the sample is rotated at angular increments of 10 degrees relative to the positive-polarity orientation
of the source displacement vector. Every transmitted response is a fast-S wavelet. The dashed circle labeled T0 defines time zero. Arrowheads define
the positive-polarity ends of the source and receiver elements.