Fig. 14
From: Which is heterogeneous, stress or strength? An estimation from high-density seismic observations
(Upper) Relationship between focal distance and the difference in P-axis orientations (the angle between two P-axes) for each event pair at a grid point (x = 9, y = 6, z = − 3), and the frequency distribution of angles between two P-axes of each event pair. (Lower) Similar plots for Kagan angles between focal mechanisms of each event pair