• an examination of τc-pd earthquake early warning method using a strong-motion building array

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
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     the use of characteristic period τc and peak displacement amplitude pd of the initial p wave in earthquake early warning (eew) was proposed by wu and kanamori 123 and 4. here we apply this approach to strong-motion records from a building sensor array installed in taitung county, taiwan. this building was damaged during the 2006 mw=6.1 taitung earthquake with a peak ground velocity (pgv) of up to 38.4 cm/s at an epicentral distance of 14.5 km. according to our analysis, the peak displacement amplitude pd is a better indicator for the destructiveness of an earthquake than τc because τc is more sensitive to the signal-to-noise ratio (snr) than pd. in accordance with previous studies, only the structurally damaging taitung earthquake generated a pd value larger than 0.5 cm (a threshold for identifying damaging events). using pd as an indicator for destructive earthquakes does not lead to missing or false alarms for eew purposes.

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