Fig. 5

Distribution of maximum shear strain rate on Kyushu Island. The rate is calculated from the data shown in Fig. 3 and is defined as (ε ₁ − ε ₃)/2, where ε ₁ and ε ₃ are maximum and minimum principal strain rates, respectively. Red circles denote earthquakes of M5.5 or larger in the 2016 Kumamoto earthquake sequence. Blue circles indicate epicenters of events of M5.5 or larger that occurred in the strain rate estimation period. Triangles and purple lines show active volcanoes and active faults, respectively