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Fig. 4 | Earth, Planets and Space

Fig. 4

From: Which is heterogeneous, stress or strength? An estimation from high-density seismic observations

Fig. 4

Examples of estimated focal mechanisms in the upper hemisphere of the events in a subregion with dimensions of 1 km per grid point (x = 9, y = 6, z = − 3). Focal mechanisms were determined using the program of Maeda (1992), in which all fault plane solutions with the least inconsistent polarities were extracted by a grid search with a spacing of about 8° in azimuth and dip directions of the B-axis on the focal sphere. Numerals shown to the lower right side of the focal mechanisms with plural solutions represent errors in focal mechanisms estimated from the largest differences between multiple numeric solutions

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