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Published June 2005 | Published
Journal Article Open

Rapid Assessment of Damage Potential of Earthquakes in Taiwan from the Beginning of P Waves

Abstract

To rapidly assess the potential for damage of an earthquake for purposes of earthquake early warning in Taiwan, we used the peak displacement and velocity amplitudes of the first 3 sec of the P wave. The vertical-component records, high-pass filtered at 0.075 Hz, are used. We found that the peak initial-displacement amplitude (Pd) correlates well with the peak ground-motion displacement (PGD) and the peak ground-motion velocity (PGV) at the same site. When Pd > 0.5 cm, the event is most likely damaging. If Pd is combined with the period parameter τ_c, determined in an earlier study, then τ_c × Pd provides an even more robust parameter for assessing the potential for damage.

Additional Information

© 2005 Seismological Society of America. Manuscript received 28 September 2004. We thank Prof. Ta-liang Teng for greatly improving this article and providing many thought-provoking comments. We also thank Prof. Friedemann Wenzel for reviewing this article and providing many valuable comments. This research was supported by the Central Weather Bureau and Grants NSC 92-2119-M-002-026 and NSC 93-2119-M-002-030 from the National Science Council of the Republic of China.

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August 22, 2023
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