抄録
In our previous paper, we used an eight-parameter formula to fit Kumamoto's data of fault length: “ Maxlen model” and “ Segment model”. We propose here a revised formula with four parameters determined by the maximum lilelihood estimation of α and β for the gamma distribution and C and D for the rate of fault segmentation. It is proved this formula fits well both the Maxlen and Segment models. The present study can be applied to the earthquake magnitude statistics through an empirical relation between magnitude and logarithmic fault length. We found that the magnitude distribution derived from the Maxlen model makes a good agreement with that of inland earthquakes (M>6.5)occuned in Japan in the past 400 years.
