Tenth U.S. National Conference on Earthquake Engineering Frontiers of Earthquake Engineering July 21-25, 2014 Anchorage, Alaska 10NCEE RAPID ASSESSMENT OF EARTHQUAKE DAMAGE USING STRONG GROUND MOTION MAPS PROVIDED BY QUIQUAKE N. Nojima 1 , M. Matsuoka 2 and M. Koyama 3 ABSTRACT Since October 2009 Advanced Industrial Science and Technology (AIST) has been operating a system called QuiQuake (Quick Estimation System for Earthquake Maps Triggered by Observation Records) which provides strong ground motion maps available on line soon after an earthquake occurrence in and around Japan. In this study, population exposure (PEX) to significant levels of shaking intensity on JMA (Japan Meteorological Agency) scale were evaluated for selected 16 major earthquakes in Japan during 1996-2011 using the archive of strong motion intensity maps provided by AIST/QuiQuake. Damage functions for building damage and human injuries were applied to perform estimation of damage. The estimated damage was compared with the observed damage. Estimation and observation were highly correlated and in fairly good agreement. However, small number of damage tends to be over- estimated, implying difficulties in precise prediction in moderate to small size of disaster. Population exposure to MMI (Modified Mercalli intensity) evaluated based on QuiQuake were compared with those evaluated by USGS/PAGER (Prompt Assessment of Global Earthquakes for Response) for four major earthquakes during 2008-2011. It was observed that both results were consistent in MMI up to VII. However, PAGER tends to underestimate in the high intensity regions such as MMI>=VIII. This discrepancy is thought to be attributed to the difference in the methods for evaluation of ground motion intensity. PAGER uses the empirical attenuation formula. On the other hand, QuiQuake incorporates and interpolates the actual strong motion intensity data in consideration of detailed site amplification capabilities based on geomorphologic classification of surface ground. 1 Professor, Dept. of Civil Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan 2 Associate Professor, Dept. of Built Environment, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259-G3-2 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan 3 Associate Professor, Unit for Liveable Cities, Graduate School of Engineering, Kyoto University , C1-2-313, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8540, Japan Nojima N, Matsuoka M and Koyama M. Rapid assessment of earthquake damage using strong ground motion maps provided by QuiQuake. Proceedings of the 10 th National Conference in Earthquake Engineering, Earthquake Engineering Research Institute, Anchorage, AK, 2014. DOI: 10.4231/D3SX6496F