[SCG58-36] Effects of periodic stress perturbations on earthquake nucleation
The remarkable points in the results are as follows:
(1) The phase distributions do not show a large phase shift.
(2) The earthquake occurrence is defined as the moment when the slip rate exceed a given threshold value. The occurrences are represented by the normal or shear stress imposed at that moment.
(3) The dependences of earthquake rate on the shear or the normal stress appear to be exponential. This indicates existence of a characteristic stress.
(4) According to the rock experiments conducted by Linker and Dieterich , variation of the normal stress additionally alters the frictional condition on the interface. The Linker-Dieterich effect suppresses a gap between top and bottom on the phase distributions, and furthermore, if the effect is very large, we observe antiphase distribution (see fig. 1).
 T. J. Ader, N. Lapusta, J.-P. Avouac, and J.-P. Ampuero, Geophys. J. Int. 198, 385 (2014).
 S. Ide and Y. Tanaka, Geophys. Res. Lett. 41, 3842 (2014); S. Ide, S. Yabe, H.-J. Tai, and K. H. Chen, Geophys. Res. Lett., 42, 3248 (2015).
 M. F. Linker, J. H. Dieterich, J. Geophys. Res. 97 4923 (1992).