This electronic supplement contains three tables and two figures. Table S1 provides the list of the 174 focal mechanism solutions determined in this study as well as the relevant catalog information of the earthquakes. Table S2 lists the GCMT solutions of the 90 earthquakes that occurred in our study region from 1976 to 2011. Table S3 lists the 10 earthquakes that appear in both our CAP solutions (Table S1) and the GCMT solutions (Table S2). Figure S1 compares the focal mechanisms of the 10 common earthquakes listed in Table S3. Figure S2 shows the stress inversion result using grid spacing of 1.1° in longitude and 1.0° in latitude.
Table S1. Focal mechanisms of 174 earthquakes in Yunnan, China, determined in this study.
Table S2. Global CMT solutions of 90 earthquakes from 1976 to 2011 in the study region.
Table S3. List of 10 earthquakes in both CAP and GCMT solutions.
Figure S1. Comparison of the focal mechanisms of the 10 earthquakes that appear in both the CAP results obtained in this study and in the GCMT catalog. In each pair of beachballs the left one is the CAP result and the right one is the GCMT solution. Below each beachball we also plot the horizontal projections of the P and T axes in red and black lines, respectively. The numbers on top of each pairs of beachballs are the event numbers in Table S1 (left number) and Table S2 (right number).
Figure S2. Result of the stress field inversion from the 287 fault-plane solutions on a two-dimensional grid with uniform grid spacing of 1.1° and 1.0° in longitude and latitude, respectively. Plotted at each resolvable grid point are the horizontal projections of the maximum principle stress axis σ1 (maximum compression) and the minimum principle stress axis σ3 (minimum compression). Blue line segments are for σ3 , whereas green, red and gray line segments are for σ1 indicating strike-slip, normal and mixed faulting environments, respectively. The number in the box at each grid point shows the number of earthquakes assigned to that grid point.
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