Fig. 11
From: Earthquakes in Switzerland and surrounding regions during 2009
Seismograms of the ML 2.6 Matran event recorded at station SULZ and of the ML 2.6 Düdingen event recorded at station ACB. Given the nearly identical epicentral distances of the two stations and a nearly horizontal Moho along the segement where the PmP reflection occurs (Waldhauser et al. 1998), the almost identical arrival-time differences between the PmP and the Pg phases shows that the focal depth of the two events must be similar