Abstract
Strong motion observation has been carried out on the rock outcrops by Central Research Institute of Electric Power Industry (CRIEPI) to obtain the basic data for the evaluation of design ground motions for electric power facilities. Now we operate 40 observatories deployed mainly in the southwestern Kanto district and the Izu Peninsula, Japan. We are preparing the strong-motion database open to the public by Internet, which will be accomplished within a couple of years.
