APPLICATION AND VERIFICATION OF THERECIPE TO STRONG-MOTION EVALUATION FOR THE 2005 WEST OFF FUKUOKA EARTHQUAKE (Mw=6.6)
Research Promotion of Japan to the simulation of ground motions during the 2005 west off Fukuoka earthquake. We examine four source models. For underground structure, we first construct an initial deep structure model, which is between seismic bedrock and engineering bedrock including some basins, based on borehole and geological data and revise it by using H/V spectra of observed strong-motion records. Although the simulated seismic intensities match to observed ones well, we confirm that it can be improved by introducing an intensity amplification factor. In addition, we found that the rupture velocity is an important source parameter to affect characteristics of calculated long-period waves. We also calculate waveforms on the ground for the center of Fukuoka city in which shallow velocity structure model is constructed. The result implies that we have to do continuous efforts to improve the underground structure models not only deep basin but also surface layers to predict strong-motion accurately much more.
Strong-motion prediction underground structure model rupture velocity the 2005 west off Fukuoka earthquake
N. Morikawa S. Senna Y. Hayakawa H. Fujiwara
Researcher, National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Japan Project director, National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Ja
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）