Departmental Bulletin Paper 2014年長野県北部の地震とその被害調査
Field Reconnaissance of Earthquake Disaster during 2014 Northern Nagano Earthquake

後藤, 浩之  ,  土井, 一生

On November 22, 2014, earthquake (M[JMA]6.7) occurred in the northern part of Nagano prefecture, Japan. Although available records of ground motion indicate that the largest seismic intensities of JMA scale was 6-, more significant structure damages were concentrated in a localized area. We performed field reconnaissance and aftershock observations in order to investigate reason of the localization. In Horinouchi area where was one of the damaged areas, a site amplification of ground motions is larger than the other sites on the basis of the aftershock records. Also, some evidences of a landslide motion behind the Horinouch area was observed.

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