SH waves scattering from a partially filled semi-elliptic alluvial valley

被引:18
|
作者
Tsaur, Deng-How [1 ]
Hsu, Ming-Sheng [1 ]
机构
[1] Natl Taiwan Ocean Univ, Dept Harbor & River Engn, Keelung 20224, Taiwan
关键词
Site effects; Theoretical seismology; Wave scattering and diffraction; Wave propagation; GROUND-MOTION; SITE; EARTHQUAKE; BASIN; PATH; CITY;
D O I
10.1093/gji/ggt106
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
The scattering of SH waves induced by a partially filled semi-elliptic alluvial valley is explored via the region-point-matching technique (RPMT). Appropriate radial and angular Mathieu functions are well utilized to express the antiplane displacement fields. With the aid of the coordinate-transformed relation, which is intended as a substitute for the addition theorem (involving multiple summations of Mathieu functions), the application of the RPMT facilitates the rapid construction of simultaneous equations. Enforcement of zero-stress conditions on the curved valley surface and continuity conditions on the soil-bedrock interface leads to the determination of unknown coefficients. Comparisons with published data for several limiting cases (e.g. those pertaining to the truncated semi-circular canyon, the partially filled semi-circular alluvial valley, the totally empty semi-elliptic canyon and the fully filled semi-elliptic alluvial valley) show good agreement. Effects of pertinent parameters on steady-state surface motions are demonstrated. Transient changes in surface displacement amplitude are also included.
引用
收藏
页码:499 / 511
页数:13
相关论文
共 50 条
  • [1] SH-waves scattering from a partially filled semi-circular alluvial valley
    Tsaur, Deng-How
    Chang, Kao-Hao
    GEOPHYSICAL JOURNAL INTERNATIONAL, 2008, 173 (01) : 157 - 167
  • [2] SCATTERING OF SH WAVES BY A TRUNCATED SEMI-ELLIPTIC CANYON
    Hsu, M. -S.
    Tsaur, D. -H.
    JOURNAL OF MECHANICS, 2014, 30 (02) : 137 - 144
  • [3] An analytical solution to the scattering of cylindrical SH waves by a partially filled semi-circular alluvial valley: near-source site effects
    Ning Zhang
    Yufeng Gao
    Jie Yang
    Changjie Xu
    Earthquake Engineering and Engineering Vibration, 2015, 14 : 189 - 201
  • [4] An analytical solution to the scattering of cylindrical SH waves by a partially filled semi-circular alluvial valley: near-source site effects
    Zhang Ning
    Gao Yufeng
    Yang Jie
    Xu Changjie
    EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION, 2015, 14 (02) : 189 - 201
  • [5] An analytical solution to the scattering of cylindrical SH waves by a partially filled semi-circular alluvial valley: near-source site effects
    Zhang Ning
    Gao Yufeng
    Yang Jie
    Xu Changjie
    Earthquake Engineering and Engineering Vibration, 2015, 14 (02) : 189 - 201
  • [6] Ground motions around a partially filled semi-circular alluvial valley with a lined tunnel under cylindrical SH waves
    He, Bo
    Lai, Yuanming
    Wu, Lizhou
    Zhu, Shuairun
    Li, Xu
    SOIL DYNAMICS AND EARTHQUAKE ENGINEERING, 2025, 188
  • [7] Scattering of SH waves from a partially debonded rigid elliptic cylinder
    Wang, YS
    Qiu, ZY
    Yu, GL
    SOIL DYNAMICS AND EARTHQUAKE ENGINEERING, 2001, 21 (02) : 139 - 149
  • [8] Ground motions around a semi-circular valley partially filled with an inclined alluvial layer under SH-polarized excitation
    Chang, Kao-Hao
    Tsaur, Deng-How
    Wang, Jeen-Hwa
    EARTH PLANETS AND SPACE, 2014, 66
  • [9] Ground motions around a semi-circular valley partially filled with an inclined alluvial layer under SH-polarized excitation
    Kao-Hao Chang
    Deng-How Tsaur
    Jeen-Hwa Wang
    Earth, Planets and Space, 66