荒砥沢ダムにおける2008年岩手・宮城内陸地震(M6.9)の地表地震断層 : 後期中新世カルデラ縁正断層が再動した逆断層
2009 年 63 巻 5 号 p. 321-326
詳細
2009 年 63 巻 5 号 p. 321-326
The 2008 M6.9 Iwate-Miyagi Nairuku earthquake generated a reverse-fault surface rupture that was observed at the Aratozawa dam site area. This faulting reactivated a normal fault formed by late Miocene caldera collapse. The earthquake triggered numerous and voluminous landslides in the hanging wall of the fault, upstream of Aratozawa dam.
