(a). Anti-Plane (30 km from the basin edge, see Fig.2)


(b). In-Plane (15 km from the basin edge, see Fig.3)

Fig.4 Synthesized velocities using the usual BEMs and the proposed BEM Solid lines: the usual BEM
Dotted lines: the BEM based on the exact Green's Function only
Dash-dotted lines: the BEM based on the exact Green's function and the normal mode solution