DEVELOPMENT OF EARTHQUAKE DISASTER PREVENTION SYSTEM USING BOTH EARTHQUAKE EARLY WARNING AND INFORMATION OF P-WAVE FROM ONSITE SEISMOMETER AND ITS PERFORMANCE

Abstract

An earthquake disaster prevention system was developed. It predicts ground motion intensity and building response just before the arrival of strong motion, using the information of P-wave observed by an onsite seismometer. The prediction accuracy of the system was evaluated and compared with that of Earthquake Early Warnings provided by Japan Meteorological Agency. The prediction errors of the two methods were comparable to each other. The best estimate combining the two methods was proposed. It was also confirmed that the system performs well under an assumed environment using numerical simulation.