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Fig. 7 | Earth, Planets and Space

Fig. 7

From: Bayesian inference and interpretation of centroid moment tensors of the 2016 Kumamoto earthquake sequence, Kyushu, Japan

Fig. 7

Adopted from Matsumoto et al. (2015)

Decomposition of non-DC MTs of the M JMA6.5 foreshock (left column) and the M JMA5.4 aftershock (right column) into combination of two DC MTs; DC MTs are shown together with their sum \( {\mathbf{MT}}_{1} + {\mathbf{MT}}_{2} = {\mathbf{MT}}_{{{\mathbf{sum}}}} \) by trinity of beach-balls; radius of beach-balls is proportional to scalar seismic moment; a, b are unique solutions of the MT decomposition preserving main (T-)axis (Eqs. (13) and (14)); c, d are selected representative solutions of the non-unique MT decomposition by the grid search approach, where the scalar moments were obtained by a linear inversion (Eq. (15)); e the regional stress field indicated by directions of σ 1, σ 2 and σ 3.

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