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Fig. 5 | Swiss Journal of Geosciences

Fig. 5

From: Multi-scale imaging of a slow active fault zone: contribution for improved seismic hazard assessment in the Swiss Alpine foreland

Fig. 5

Seismograms (nm/s, 2–10 Hz) of twelve higher-magnitude ECOS events (see location in Fig. 7b). a Signals recorded at HASLI aligned on unequivocal P-arrivals identified at station TORNY. b Seismograms recorded at SENIN aligned on P-arrivals manually picked at that station. P-onsets of events number 2 and 6 could not be picked satisfactorily and are consequently not displayed. For better display of S-arrivals, vertical and east-horizontal components are stacked in a, b. c Seismograms recorded at STAF vertical channel display prominent surface waves at short epicentral distances (arrows). Note the different onset polarities (zoomed circles) that suggest variation in focal mechanism (see Sect. 6). d Signal recorded at STAF east-horizontal component show systematical variations in tS–tP travel-time differences between about 0.7 and 2.0 s and high-amplitude S-phase arrivals. The vertical dotted lines in a, b, d help to visualize waveform alignments

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