Abstract
Since May 1996, the National Research Institute for Earth Science and Disaster Prevention (NIED) of the Science and Technology Agency constructed a strong motion network that contains 1000 stations throughout Japan. In this study attenuation relationships considering the station coefficient of each recording site for the strong ground motion indices, such as PGA, PGV, and JMA seismic intensity, were developed using accelerograms of Kyoshin Network (K-NET). The final acceleration records consist of 6, 017 three-component sets from 94 earthquakes in the period of May 1996 to December 1998. The obtained attenuation model was examined by recorded data in some large magnitude events.
