Proposal of Spectral Directivity Amplification Factor Using Strong-Motion Records of the 1999 Chi-Chi, Taiwan Earthquake

سال انتشار: 1382
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,494

فایل این مقاله در 7 صفحه با فرمت PDF قابل دریافت می باشد

این مقاله در بخشهای موضوعی زیر دسته بندی شده است:

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

SEE04_SM17

تاریخ نمایه سازی: 10 آبان 1384

چکیده مقاله:

Near-fault earthquake ground motion can be strongly enhanced relative to more distant sites,due to the proximity to the source and the presence of directivity effects caused by coherent,long-period velocity pulses. Realistic capturing and modeling of near-source strong motion records is complicated by many factors such as geometry and style –of faulting, local soil conditions, 3D basin effects, large attenuation, topographic relief, and strong underground heterogeneity. Rapid development of strong-motion instrumentations results in more accurate and efficient modeling of these important features. The 1999 Chi-Chi, Taiwan earthquake with a moment magnitude of 7.6 provides the largest acceleration data set recorded by the Seismological Center of the Central Weather Bureau of Taiwan (CWB). In this study the attenuation characteristics of the hanging wall and the footwall regions are examined. Then a period dependent, empirical, spectral amplitude factor model representing the directivity effects for the dip-slip faulting system is developed. The proposed model shows a larger spectral amplification ratio than the previous study result by Somerville et al. 1997. During the Chi-Chi earthquake, the maximum spectral directivity factors have been registered in the up-dip region around the surface exposure of the Chelungpu fault. Since the proposed spectral directivity factor is a magnitude-and distance-independent, it can be easily implemented into attenuation relations, seismic hazard assessment, and building code revision studies for the regions with a dip-slip faulting.

نویسندگان

Khosrow T. Shabestari

Research Scientist, Earthquake Disaster Mitigation Research Center, NIED ۲۴۶۵-۱, Mikiyama, Miki, Hyogo ۶۷۳-۰۴۳۳, Japa

Fumio Yamazaki

Professor, Team Leader, Earthquake Disaster Mitigation Research Center, NIED ۲۴۶۵-۱, Mikiyama, Miki, Hyogo ۶۷۳-۰۴۳۳, Japan

مراجع و منابع این مقاله:

لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :
  • W.H.K. Lee, T.C. Shin, K.W. Kuo, K.C. Chen, C.F. Wu ...
  • N.A. Abrahamson, P.G. Somerville (1996).، #Effects of the Hnging WIl ...
  • P.G. Somerville (2000).، ، Characterized of Near Fault Ground Motions', ...
  • N.A. Ab rahamson, W.J. Silva (1997). *Empirical Response Spectral Attenuation ...
  • Somerville, P., Smith, N.F., Graves, R.W., and Abrahams On, N.A. ...
  • K.W. Campbell (1987). *Predicting Strong Ground Motion in Utah', U.S. ...
  • Y. Fukushima, T. Tanaka (1990).، A New Attenuation Relation for ...
  • D.M. Boore, W.B. Joyner (1982).، The Empirical Prediction of Ground ...
  • K.T. Shabestari, F. Yamazaki (2002). *Hanging Wall and Footwall Effects ...
  • Y. Yagi, M. Kikuchi (1999). 4$Source Rupture Process of the ...
  • P. G. Somerville (2000). *Magnitude scaling of near fault ground ...
  • نمایش کامل مراجع