Earthquake investigation in the Atotsugawa Fault System

Takemura, Tomoyuki*; Takebe, Akimitsu*

In this study, artificial earthquake is triggered by gunpowder explosion near the surficial part of the Mozumi-Sukenobu Fault in the Atotsugawa Fault System, for the purpose of the basic data collection about the underground structure of the fault. And seismic wave derived from the explosion is observed on the surface and in the investigation tunnel across the fault.