Fig. 9
From: High-resolution mini-seismic methods applied in the Mont Terri rock laboratory (Switzerland)
Derived apparent vp data from IVM in borehole BDM-B2 (see also Fig. 8) for receiver R1 (5 cm). The large dynamic range of vp is remarkable. For selected sections, a mean vp is plotted and selected photographs from the borehole wall are shown. Note the close similarity of vp distribution compared with borehole BWS-I2, which has the same orientation and is located several meters further W (Fig. 10)