Fig. 1.
From: Earthquake forecast models for inland Japan based on the G-R law and the modified G-R law
Frequency-magnitude distribution of data used to make models. Crosses denote the number of events per magnitude bin. Data periods vary depending on magnitude ranges: 1965–2007 for M ≥ 5.0, 1980–2007 for M ≥ 4.0, 1990–2007 for M ≥ 3.0, and 2000–2007 for M ≥ 2.0. Open circles denote the number of events in each magnitude bin after adjustment based on the length of data periods. Solid circles are cumulative number of events shown by open circles. Solid line represents the approximate cumulative distribution by the G-R law with A = 6.81, b = 0.87.