During the emergency field survey of the International Research Institute of Disaster Science, Tohoku University, on April 17, the research team identified an area where a surface earthquake fault has appeared within the Hinagu fault zone, with a right-lateral strike-slip of approximately 25 centimeters in Takigawa, Mifune Town, Kamimashiki-gun, Kumamoto Prefecture. It seems that this rupture emerged at the magnitude 7.3 earthquake in predawn on April 16 (according to the landowner). Also, there is a possibility that the earthquake fault continues further south.

Field survey

Point where the field survey was conducted

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