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Relationships between Strong Ground Motion Peak Values and Seismic Loss during the 1999 Chi-Chi, Taiwan Earthquake

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  • Yih-Min Wu
  • Nai-Chi Hsiao
  • Ta-Liang Teng

Abstract

A better real-time assessment of earthquake effects (i.e. seismic intensity estimation)is crucial for hazard mitigation. Especially during the aftermath of a disastrous event,significant reduction of loss can usually be realized through timely execution ofemergency response measures. These effects include strong-ground shaking, groundfailure, and their impact on man-made structures. The descriptive Modified Mercalliintensity scale, though still in common use in many poorly instrumented areas of theworld, is out of date in areas of extensive strong-motion instrumentation. It is desirableto place the earthquake intensity scale on a more quantitative basis based on the actualrecorded ground-motion shaking and carefully compiled damage records. In this paper,we investigated the relationships between earthquake loss, intensity and strong motionpeak values, mainly based on the Chi-Chi earthquake. Both the strong-motion peakvalues and the earthquake loss are related. From the results, we found that peak groundacceleration (PGA) and peak acceleration response spectra at 1 s period (1 s Sa) valuesare two parameters that give slightly higher correlation coefficients than other parametersfor earthquake loss analysis. For intensity estimations, the peak ground velocity (PGV)values and 1 s Sa values are better parameters in the high range and PGA is not stable forsmaller earthquakes. Although PGV values give a slightly lower correlation coefficientand larger standard deviation in seismic loss analysis during the Chi-Chi earthquake, itnevertheless gives more reliable instrumental intensity over a broad magnitude range.1 s Sa is a good parameter for both seismic losses and intensity evaluation. We thusconclude that PGV and 1 s Sa are relatively more stable in damage assessment and,at least in the high end, in intensity estimation. We shall incorporate these findings inour real-time earthquake rapid reporting and early warning systems. Copyright Kluwer Academic Publishers 2004

Suggested Citation

  • Yih-Min Wu & Nai-Chi Hsiao & Ta-Liang Teng, 2004. "Relationships between Strong Ground Motion Peak Values and Seismic Loss during the 1999 Chi-Chi, Taiwan Earthquake," 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. 32(3), pages 357-373, July.
    • Handle: RePEc:spr:nathaz:v:32:y:2004:i:3:p:357-373
    DOI: 10.1023/B:NHAZ.0000035550.36929.d0
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    References listed on IDEAS

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    1. Hiroo Kanamori & Egill Hauksson & Thomas Heaton, 1997. "Real-time seismology and earthquake hazard mitigation," Nature, Nature, vol. 390(6659), pages 461-464, December.
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    Cited by:

    1. Koster, Hans R.A. & Ommeren, Jos van, 2015. "A shaky business: Natural gas extraction, earthquakes and house prices," European Economic Review, Elsevier, vol. 80(C), pages 120-139.
    2. Meng-Hsun Hsieh & Bing-Jean Lee & Tsu-Chiang Lei & Jer-Yan Lin, 2013. "Development of medium- and low-rise reinforced concrete building fragility curves based on Chi-Chi Earthquake data," 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. 69(1), pages 695-728, October.

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