부산대학교 도서관

The Kokura-higashi fault located in the northern Kyushu Island is an active fault extending in NNESSW direction with west-side-up and right-lateral displacement. The Earthquake Research Committee of the Headquarters for Earthquake Research promotion evaluated that the probability of the earthquake occurrence in the future on the Kokura-higashi fault is unknown because of the luck of paleoseismological data. After such situation, we carried out a trench excavation survey on this fault. A trench was excavated on the fault trace of the Kokura-higashi fault estimated from the continuation of the fault scarplet to reveal the past activity of this fault.