Abstract
We carried out damage investigation around the seismic stations where high JMA seismic intensity scales were recorded in the 2007 Niigata-ken-chuetsu-oki Earthquake. Among the seismic stations with 6+ JMA seismic intensity scales we found many heavily damaged wooden houses around K-NET Kashiwazaki, Kashiwazaki- Chuomachi Shindokei, but we did not find heavy damage around the Nagaokashi-Oguni and Iizunacho- Imokawa Shindokei. We did not find heavy damage around the seismic stations with 6- JMA seismic intensity scales. We investigated the correspondence of strong ground motions with damage to buildings. We found that 2-2.5 sec. dominated in the records of K-NET Kashiwazaki, Kashiwazaki-Chuomachi Shindokei with heavy damage and large 1-2 sec. responses that brought about severe damage to buildings. On the contrast, in the case of the records of the Nagaokashi-Oguni and Iizunacho-Imokawa Shindokei with 6+JMA seismic intensity scales and no heavy damage, short period below 1 sec. dominated and the 1-2 sec. responses were small.
