[SSS12-P11] Research on seismicity in Japan utilizing ultra-microeathquake data in the JMA unified earthquake catalog
Keywords:seismicity, ultra-microearthquake, time-circle diagram
The JMA unified earthquake catalog contained more than 1 milion ultra-microearthquake hypocenter data for the past 20years. But the data has not been used mainly due to spatial and temporal incompleteness.
In this study, usefulness of the data for the research on seismicity in Japan has been proved , if we utilize them
adequately. The time-circle diagram (TC-map) method can be used for analysis of such large amout of hypocenter data.
In this study, usefulness of the data for the research on seismicity in Japan has been proved , if we utilize them
adequately. The time-circle diagram (TC-map) method can be used for analysis of such large amout of hypocenter data.