Abstract
We examined scaling laws of outer fault parameters of crustal earthquakes caused by normal faults, and obtained the same empirical relationship between the seismic moment and the fault area and that between the seismic moment and the short-period level as existing ones adopted by the Headquarters of Earthquake Research Promotion (2005). Furthermore, we estimated strong ground motions by the SGF method for a normal fault, which was set according to the proposed procedure. The PGA level of the resulting ground motions was similar to that for other types of faults. And the PGV level was similar to that for the strike-slip fault set according to the procedure by the Headquarters of Earthquake Research Promotion (2005), while it was smaller than that for the strike-slip fault set by Dan et al. (2011) or for the reverse fault set by Dan et al. (2015).
