Fig. 6
From: Earthquakes in Switzerland and surrounding regions during 2012
Comparison of the PmP arrivals at stations WILA and ZUR of an event of the Sertig sequence (2003/07/18 11:01, ML 3.9) and of the Filisur sequence (2012/01/02 01:42, ML 3.5). The signals are integrated to displacement with a Wood-Anderson filter and filtered with a 1–20 Hz, 2nd order Butterworth band-pass filter