Yu Tian Li Xiaojunupcom sh a. 2012: Inversion of strong motion data for source parametersof Wenchuan aftershocks, attenuation functionand average site effect. Acta Seismologica Sinica, 34(5): 621-632.
Citation: Yu Tian Li Xiaojunupcom sh a. 2012: Inversion of strong motion data for source parametersof Wenchuan aftershocks, attenuation functionand average site effect. Acta Seismologica Sinica, 34(5): 621-632.

Inversion of strong motion data for source parametersof Wenchuan aftershocks, attenuation functionand average site effect

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  • Published Date: August 29, 2012
  • The average shear-wave velocity profile for shallow soil sites at a depth of 20 m is derived from the drilling data of strong motion stations in Sichuan and Gansu provinces. Combined with the profile of California and the crust model used inearthquake prediction study for Sichuan Province, the average shear-wave velocity profile is extended to 40 km. The site amplification factor for shallow soil sites is generated by using the quarter wave-length method. Then, the quality factors of different zones, the effective stress drop and kappa value at shallow soil sites are deduced from the Fourier amplitude spectra of 13 aftershocks of the Wenchuan earthquake. Due to different site effects, the strong motion data at deep soil sites show a large bias from the inverted model. According to the bias, the site amplification factor for deep soil sites is derived from revision of the site amplification factor for shallow soil sites.
  • 华卫, 陈章立, 郑斯华. 2009. 2008年汶川8.0级地震序列震源参数分段特征的研究[J]. 地球物理学报, 52(2): 365——371.

    雷建设, 赵大鹏, 苏金蓉, 张光伟, 李凤. 2009. 龙门山断裂带地壳精细结构与汶川地震发震机理[J]. 地球物理学报, 52(2): 339——345.

    谈洪波, 申重阳, 玄松柏. 2010. 地壳分层与地壳厚度对汶川地震同震效应的影响[J]. 大地测量与地球动力学, 30(4): 29——35.

    赵珠, 范军, 郑斯华, 长谷川昭, 堀内茂木. 1997. 龙门山断裂带地壳速度结构和震源位置的精确修订[J]. 地震学报, 19(6): 615——622.

    Anderson J G, Hough S E. 1984. A model for the shape of the Fourier amplitude spectrum of acceleration at high frequencies[J]. Bull Seism Soc Amer, 74(5): 1969——1993.

    Atkinson G M, Mereu R F. 1992. The shape of ground motion attenuation curves in Southeastern Canada[J]. Bull Seism Soc Amer, 82(5): 2014——2031.

    Boore D M, Joyner W B. 1997. Site amplifications for generic rock sites[J]. Bull Seism Soc Amer, 87(2): 327——341.

    Chiou B, Darragh R, Gregor N, Silva W. 2008. NGA project strong——motion database[J]. Earthq Spectra, 24(1): 23——44.

    Herrmann R B. 1985. An extension of random vibration theory estimates of strong ground motion to large distance[J]. Bull Seism Soc Amer, 75(5): 1447——1453.

    Joyner W B, Warrick R E, Fumal T E. 1981. The effect of quaternary alluvium on strong ground motion in the Coyote Lake, California, Earthquake of 1979[J]. Bull Seism Soc Amer, 71(4): 1333——1349.

    Press W H, Teukolsky S A, Vetterling W T, Flannery B P. 2005. Numerical Recipes in Fortran[M]. New York: Cambridge University Press: 678——682.

    Silva W J, Li S, Darragh B, Gregor N. 2000. Surface Geology——Based Strong Motion Amplification Factors for San Francisco and Los Angeles Areas[R]. PEER Report, 30——45.

    Silva W J. 1996. Description and validation of the stochastic ground motion model[R]∥A Report to Engineering Research and Applications Division Department of Nuclear Energy Brookhaven National Laboratory. Chapter 3: 1——8.

    华卫, 陈章立, 郑斯华. 2009. 2008年汶川8.0级地震序列震源参数分段特征的研究[J]. 地球物理学报, 52(2): 365——371.

    雷建设, 赵大鹏, 苏金蓉, 张光伟, 李凤. 2009. 龙门山断裂带地壳精细结构与汶川地震发震机理[J]. 地球物理学报, 52(2): 339——345.

    谈洪波, 申重阳, 玄松柏. 2010. 地壳分层与地壳厚度对汶川地震同震效应的影响[J]. 大地测量与地球动力学, 30(4): 29——35.

    赵珠, 范军, 郑斯华, 长谷川昭, 堀内茂木. 1997. 龙门山断裂带地壳速度结构和震源位置的精确修订[J]. 地震学报, 19(6): 615——622.

    Anderson J G, Hough S E. 1984. A model for the shape of the Fourier amplitude spectrum of acceleration at high frequencies[J]. Bull Seism Soc Amer, 74(5): 1969——1993.

    Atkinson G M, Mereu R F. 1992. The shape of ground motion attenuation curves in Southeastern Canada[J]. Bull Seism Soc Amer, 82(5): 2014——2031.

    Boore D M, Joyner W B. 1997. Site amplifications for generic rock sites[J]. Bull Seism Soc Amer, 87(2): 327——341.

    Chiou B, Darragh R, Gregor N, Silva W. 2008. NGA project strong——motion database[J]. Earthq Spectra, 24(1): 23——44.

    Herrmann R B. 1985. An extension of random vibration theory estimates of strong ground motion to large distance[J]. Bull Seism Soc Amer, 75(5): 1447——1453.

    Joyner W B, Warrick R E, Fumal T E. 1981. The effect of quaternary alluvium on strong ground motion in the Coyote Lake, California, Earthquake of 1979[J]. Bull Seism Soc Amer, 71(4): 1333——1349.

    Press W H, Teukolsky S A, Vetterling W T, Flannery B P. 2005. Numerical Recipes in Fortran[M]. New York: Cambridge University Press: 678——682.

    Silva W J, Li S, Darragh B, Gregor N. 2000. Surface Geology——Based Strong Motion Amplification Factors for San Francisco and Los Angeles Areas[R]. PEER Report, 30——45.

    Silva W J. 1996. Description and validation of the stochastic ground motion model[R]∥A Report to Engineering Research and Applications Division Department of Nuclear Energy Brookhaven National Laboratory. Chapter 3: 1——8.

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