Fig. 11

Distribution of hypocenters estimated from a Dataset 1, b Dataset 2, and c the number ratio of events from Dataset 2 to those from Dataset 1. In a and b, the dots denote estimated hypocenters. The color indicates the depth of the hypocenters. In c, the number ratio was estimated from numbers of earthquakes shallower than 60 km within each one-degree bin for both datasets using 100 events for both datasets. The evaluated number ratios are plotted as the colored squares in the center locations of these bins. The color used for the number ratio is shown below (c)