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Early Estimation of Seismic Hazard for Strong Earthquakes in Taiwan

Author

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  • Wen-Yu Jean
  • Yu-Wen Chang
  • Kuo-Liang Wen
  • Chin-Hsiung Loh

Abstract

A shakemap system providing rapid estimates of strong ground shaking could be useful for emergency response providers in a damaging earthquake. A hybrid procedure, which combines site-dependent ground motion prediction models and the limited observations of the Real-Time Digital stream output system (RTD system operated by Central Weather Bureau, CWB), was set up to provide a high-resolution shakemap in a near-real-time manner after damaging earthquakes in Taiwan. One of the main factors that affect the result of ground motion prediction analysis is the existence of site effects. The purpose of this paper is to investigate the local site effects and their influence in the ground shaking and then establish an early estimation procedure of potential hazard for damaging earthquakes. Based on the attenuation law, the site effects of each TSMIP station are discussed in terms of a bias function that is site and intensity-level dependent function. The standard deviation of the site-dependent ground motion prediction model can be significantly reduced. The nonlinear behavior of ground soil is automatically taken into account in the intensity-level dependent bias function. Both the PGA and the spectral acceleration are studied in this study. Based on the RTD data, event correctors are calculated and applied to precisely estimate the shakemap of damaging earthquakes for emergency response. Copyright Springer 2006

Suggested Citation

  • Wen-Yu Jean & Yu-Wen Chang & Kuo-Liang Wen & Chin-Hsiung Loh, 2006. "Early Estimation of Seismic Hazard for Strong Earthquakes in Taiwan," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 37(1), pages 39-53, February.
    • Handle: RePEc:spr:nathaz:v:37:y:2006:i:1:p:39-53
    DOI: 10.1007/s11069-005-4655-y
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    Citations

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    Cited by:

    1. Vincenzo Convertito & Raffaella De Matteis & Luciana Cantore & Aldo Zollo & Giovanni Iannaccone & Mauro Caccavale, 2010. "Rapid estimation of ground-shaking maps for seismic emergency management in the Campania Region of southern Italy," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 52(1), pages 97-115, January.
    2. Yu-Kai Wang & Juin-Fu Chai & Yu-Wen Chang & Ti-Ying Huang & Yu-Shu Kuo, 2016. "Development of Seismic Demand for Chang-Bin Offshore Wind Farm in Taiwan Strait," Energies, MDPI, vol. 9(12), pages 1-19, December.

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