Fig. 5
From: Activated seismicity by strain rate change in the Yaeyama region, south Ryukyu
Strain rate change in the Yaeyama Islands. a Averaged strain rate for 3Â years in the Yaeyama Islands from 1999 to 2016. Red line and dotted blue line show the dilatation rate and maximum shear strain rate, respectively. Thin red and blue areas show the error range of the dilatation rate and maximum shear strain rate, respectively. b Averaged dilatation rate for 3Â months in the Yaeyama Islands from 1998 to 2017. Red line shows the dilatation rate. The thin red area shows the error range of the dilatation rate. Dotted vertical lines show the occurrence of the SSEs by Tu and Heki (2017). c The same as b but for the maximum shear strain rate