کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
304607 | 512815 | 2011 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: An examination of τc-Pd earthquake early warning method using a strong-motion building array An examination of τc-Pd earthquake early warning method using a strong-motion building array](/preview/png/304607.png)
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 [1], [2], [3] 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.
Journal: Soil Dynamics and Earthquake Engineering - Volume 31, Issue 2, February 2011, Pages 240–246