ABSTRACT
Many landslides occurred in hilly areas in the MidNiigata Prefecture Earthquake in 2004. The inertial force from the earthquake vibration was the main cause on these landslides. The Mid-Niigata Prefecture Earthquake in 2004 was a large-scale earthquake during which a large number of landslides occurred. The chapter utilises numerical analysis to investigate the relationship between the obtained distribution of the earthquake vibrations as influenced by the topology of the mountain and the landslides that occurred during the earthquake. The research site is about 6 km east-northeast from the epicenter of the Mid-Niigata Prefecture Earthquake. It is a hilly area in which many landslides occurred. A three-dimensional mountain model was made to clarify the characteristics of the earthquake’s distribution on the mountain. Earthquake response analysis was carried out by dynamic elasto-plastic finite element model analysis.
