文化大學機構典藏 CCUR:Item 987654321/24124
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 46965/50831 (92%)
造访人次 : 12653749      在线人数 : 652
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧：
  • 您可在西文检索词汇前后加上"双引号"，以获取较精准的检索结果
  • 若欲以作者姓名搜寻，建议至进阶搜寻限定作者字段，可获得较完整数据
    •  进阶搜寻
    主页 ‧ 登入 ‧ 上传 ‧ 说明 ‧ 关于CCUR ‧ 管理 到手机版


    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/987654321/24124


    题名: Rise time and source duration of the 2008 M-W 7.9 Wenchuan (China) earthquake as revealed by Rayleigh waves
    作者: Hwang, RD (Hwang, Ruey-Der)
    Chang, JP (Chang, Jo-Pan)
    Wang, CY (Wang, Chien-Yin)
    Wu, JJ (Wu, Jia-Jhang)
    Kuo, CH (Kuo, Ching-Huei)
    Tsai, YW (Tsai, Yu-Wei)
    Chang, WY (Chang, Wen-Yen)
    Lin, TW (Lin, Tzu-Wei)
    贡献者: Dept Geol
    关键词: Rise time
    source duration
    Rayleigh waves
    phase velocity
    rupture directivity
    日期: 2011
    上传时间: 2013-01-31 13:16:31 (UTC+8)
    摘要: The fault parameters of the 2008 Wenchuan earthquake were studied in a rupture directivity analysis by simultaneously inverting the period of the first Fourier spectral-node and the 100-s phase-delay time of the Rayleigh wave. The results show that the earthquake is a unilateral event with an optimal rupture azimuth of N59 degrees E, consistent with the distribution of aftershocks. They also indicate that the fault plane strike is in the NE-SW direction, corresponding to the fault plane strike of 238 degrees and NW-dipping (reported by the USGS). The inversion shows the source duration (including the rise time and rupture time) and rise time are 70 +/- 0.8 s and 9.3 +/- 0.6 s, respectively. The rupture velocity estimated only from the rupture time exhibits relatively higher value, 3.45 +/- 0.10 km/s, close to or larger than the S-wave velocity in the crust. One possible cause is that the rupture mechanism transferred from the thrust faulting in the southwestern portion of the fault to the strike-slip faulting in the northeastern one. The rise time offers an estimate of the dynamic stress drop (37.8 +/- 2.3 bars), from which through a macroscopic view the radiated seismic energy of (5.93 +/- 0.4) x 10(16) N m is calculated. Although the estimated rupture length (similar to 210 km) and source duration are shorter than several source rupture models, the current analyses show the first-order rupture feature of the 2008 Wenchuan earthquake rupturing the Longmenshan fault zone.
    關聯: EARTH PLANETS AND SPACE 卷: 63 期: 5 頁數: 427-434
    显示于类别:[地理學系] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML323检视/开启


    检视Licence

    在CCUR中所有的数据项都受到原著作权保护.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈