Figure A2From: Volcano Seismic Signals, Source Quantification ofA vertical cylinder of length L and radius R. The cylinder surface can be regarded as a cylindrical crack, where the radial expansion \({D_c = (d_c + \Delta_c)}\) occurs. Here, the inner wall of the crack moves inward by \({d_c}\) and the outer wall moves outward by \({\Delta_c}\) [89]Back to chapter page