Stochastic Extended Simulation (EXSIM) of Mw 7.0 Kumamoto-Shi earthquake on 15 April 2016 in the Southwest of Japan using the SCEC Broadband Platform (BBP)

• Main Authors: M.C. Raghucharan, Surendra Nadh Somala
• Format: Article
• Language: English
• Published: AIMS Press 2018-06-01
• Series: AIMS Geosciences
• Subjects: Kumamoto-Shi earthquake| ground motion simulation| SCEC BBP; EXSIM| Goodness-of-Fit plots
• Online Access: http://www.aimspress.com/article/10.3934/geosci.2018.2.144/fulltext.html

Ground motions for M_w 7.0, 15 April 2016, Kumamoto-Shi earthquake of Japan are simulated employing Stochastic Extended Simulation (EXSIM) methodology within the Southern California Earthquake Centre (SCEC) Broadband Platform (BBP) version 15.3.0, utilizing the strong ground motion data from K-NET and KiK-net. Residuals [(ln(data/model)] are plotted as a function of hypocentral distance for a subset of eight periods. Trail simulations are run by varying stress drop until a better match of residuals is obtained. Validation exercise is run with a new data set to ascertain the accuracy of simulations. The results exhibit a close match between the recorded and predicted data. Adopting the validated seismological model of this study, ground motions are predicted at three important sites, which are devoid of strong-motion stations. These results can be used as inputs for conducting dynamic, response spectrum analysis of structures, liquefaction potential of soils, stability analysis and landslide runout estimation of slopes.