Influences of earthquake motion on slopes in a hilly area during the Mid-Niigata Prefecture Earthquake,2004

摘要

The Mid-Niigata Prefecture Earthquake in 2004 was a large-scale earthquake during which alarge number of landslides occurred. In this study,we used numerical analysis to investigate the relationshipbetween the obtained distribution of the earthquake vibrations as influenced by the topology of the mountainand the landslides that occurred during the earthquake. The results showed that the source areas of the largescale landslides distributed on mountain ridges. The landslides located in areas where there was great seismicacceleration and a large shear strain distributed. As a result,the slope-scale distribution of the earthquakevibrations affected on the occurrences of landslides.