Fig. 8
From: Earthquakes in Switzerland and surrounding regions during 2012
Record section of the seismograms of the ML 3.5 Zug event of 2012/02/24 00:32 as a function of epicentral distance along a WSW trending profile. The signals are filtered with a 0.5–10 Hz Butterworth band-pass filter. In this direction, the apparent velocity of the Pn arrivals is 8.15 km/s and for the Pg arrivals beyond 80 km it is approximately 6.2 km/s. The unusually small Pn–Pg cross-over distance of about 70 km is evidence for the close proximity of the hypocenter to the Moho