“…It was suggested in the earlier literature that "the mechanism of EQs is apparently some sort of laboratory fracture process" (Mogi, 1962a(Mogi, , b, 1968(Mogi, , 1985Ohnaka, 1983;Ohnaka and Mogi, 1982;Scholz, 1968Scholz, , 1990Scholz et al, 1973;Sobolev, 1995;Ponomarev et al, 1997;Ohnaka and Shen, 1999;Sobolev and Ponomarev, 2003;Muto et al, 2007;Kuksenko et al, 1996Kuksenko et al, , 2005Kuksenko et al, , 2007Kuksenko et al, , 2009Lei and Satoh, 2007). Recently, the aspect of self-affine nature of faulting and fracture is widely documented from analyses of data from both field observations and laboratory experiments in the spatial, temporal, and energy domains (Mandelbrot, 1982;Mandelbrot et al, 1984;Zavyalov and Sobolev, 1988;Gabrielov et al, 1999;Kuksenko et al, 2007;Davidsen and Schuster, 2002;Lockner et al, 1992;Diodati et al, 1991;Kapiris et al, 2004).…”