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Swiss Journal of Geosciences
Fig. 6 | Swiss Journal of Geosciences

Fig. 6

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

Fig. 6

a Cross-correlation matrix for 227 chronologically sorted events recorded at station STAF (five-second cross-correlation window aligned on P-arrivals, vertical component integrated to velocity and band-pass filtered between 1 and 30 Hz). b Hierarchical clustering derived with a single linkage function and a dissimilarity threshold of 0.2. c Cross-correlation matrix resulting from the hierarchical clustering. Five main earthquake families are highlighted in the Fribourg earthquake dataset in function of their relative location to STAF: (1) FL-North, (2) FL-Center, (3) FL-South, (4) St. Sylvester, and (5) Fribourg Cluster. (d) STAF vertical-component waveforms (nm/s, maximum 0-peak amplitude is indicated below each trace, 1–30 Hz) for the FL-Center cluster

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