Fig. 6
From: Earthquake focal mechanisms and stress orientations in the eastern Swiss Alps
Results of the stress inversion (lower-hemisphere Wulff-projections) for the Penninic/Austroalpine and the complete Helvetic data sets, as well as for the two Helvetic subsets outlined in Fig. 4. S1, maximum; S2, the intermediate; S3, the minimum compressive stress axis. The larger white symbols show the orientation of the principal axes of the optimum stress tensor. The scatter around the optimum orientation for each stress axis shows the 95 % confidence limits of the boot-strap inversions