文化大學機構典藏 CCUR:Item 987654321/35976
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    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://irlib.pccu.edu.tw/handle/987654321/35976


    题名: Rupture features of the 2010 Mw 8.8 Chile earthquake extracted from surface waves
    作者: Huang, YL (Huang, Yi-Ling)
    Hwang, RD (Hwang, Ruey-Der)
    Jhuang, YS (Jhuang, Yi-Shan)
    Lin, CY (Lin, Cai-Yi)
    贡献者: 地質系
    关键词: 2010 Chile earthquake
    Rupture velocity
    Rise time
    Static stress drop
    日期: 2017-03
    上传时间: 2017-04-19 15:24:57 (UTC+8)
    摘要: This study used the rupture directivity theory to derive the fault parameters of the 2010 Mw 8.8 Chile earthquake on the basis of the azimuth-dependent source duration obtained from the Rayleigh-wave phase velocity. Results revealed that the 2010 Chile earthquake featured asymmetric bilateral faulting. The two rupture directions were N171 degrees E (northward) and N17 degrees E (southward), with rupture lengths of approximately 313 and 118 km, respectively, and were related to the locking degree in the source region. The entire source duration was approximately 187 s. After excluding the rise time from the source duration, the northward rupture velocity was approximately 2.02 km/s, faster than the southward rupture velocity (1.74 km/s). On average, the rupture velocity derived from this study was slower than that estimated from finite-fault inversion; however, several historical earthquakes in the Chile region also showed slow rupture velocity when using low-frequency signals, as surface waves do. Two earlier studies through global-positioning-system data analysis showed that the static stress drop of 50-70 bars for the 2010 Chile earthquake was higher than that for subduction-zone earthquakes. Hence, a remarkable feature was that the 2010 Chile earthquake had a slow rupture velocity and a high static stress drop, which suggested an inverse relationship between rupture velocity and static stress drop.
    關聯: EARTH PLANETS AND SPACE 卷: 69 文獻號碼: 41
    显示于类别:[地質系] 期刊論文

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