WU ZHONGLIANG, ZANG SHAOXIAN. 1991: SOURCE PARAMETERS OF BOHAI EARTHQUAKE OF JULY 18, 1969 AND YONGSHAN EARTHQUAKE OF MAY 11, 1974 FROM SYNTHETIC SEISMOGRAM OF BODY WAVES. Acta Seismologica Sinica, 13(1): 1-8.
Citation: WU ZHONGLIANG, ZANG SHAOXIAN. 1991: SOURCE PARAMETERS OF BOHAI EARTHQUAKE OF JULY 18, 1969 AND YONGSHAN EARTHQUAKE OF MAY 11, 1974 FROM SYNTHETIC SEISMOGRAM OF BODY WAVES. Acta Seismologica Sinica, 13(1): 1-8.

SOURCE PARAMETERS OF BOHAI EARTHQUAKE OF JULY 18, 1969 AND YONGSHAN EARTHQUAKE OF MAY 11, 1974 FROM SYNTHETIC SEISMOGRAM OF BODY WAVES

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  • Published Date: September 01, 2011
  • The source parameters of the M=7.4 Bohai earthquake of July 18, 1969 and the M = 7.1 Yongshan, Yunnan earthquake of May 11, 1974 were studied with synthetic seismograms of long-period body waves. Full-wave theory seismograms with WKBJ approximation and real integral paths of teleseismic P + pP + sP phases at 20 WWS-SN stations for the Bohai earthquake and 7 WWSSN stations for the Yongshan earthquake were calculated. The synthetic seismograms were matched with the observed traces by trail-and-error to obtain the source parameters. The results are: For the Bohai earthquake, h = 25km, = 205, = 85, = -145, M0 = 2.4 1019N m, R = 25, L = 36km, VR = 6 km/s. For the Yongshan earthquake, two simultaneous sub-ruptures of h=15km were concerned and = 45, = 65, = 0, M0 = 1.9 1019N m, R = 225, L = 10km, VR = 1 km/s for the first one; and = 220, = 75, = 170, M0 = 1.3 1019N m, R = 30, L = 23km, vR=2 km/s for the second one, where is strike, dip, rake, M0 seismic moment, h depth, R fracture direction, L fracture length, and VR rupture speed.
  • [1] 鄢家全、时振粱、汪素云、环文林X1979.中国及邻区现代构造应力场的区域特征.地震学报,1,9——24

    [2] 魏光兴,1980.关于渤海地震震源断层面的讨论.地震地质,2,3,64,

    [3] 束沛溢、李幼铭、铁安、姚振兴,1983.利用远震P波波形反演渤海地震的震源参数.地球物理字报,26——38

    [4] 卓饪如、Kanamori, H., 1988,渤海地震的震源参数.地震学报,10,213——217,

    [5] 周蕙兰、刘斌,1988_——维单侧移动源混成波第一峰(谷)值法判断断层面和1969年渤海地震发震断层探讨—渤海地震研究(一).中国地震,4,2,72——79

    [6] 周蕙兰、吉连祥、魏东平、刘斌,1989,多台波形确定震源深度的l1/2min和方法及1969年渤海大震初始破裂点的深度—渤海地震研究(二).中国地震,5,1,33——37,

    [7] 蜀水,1976震源应力场岩石膨胀性和水的扩散作用—云南省永善7.1级地震及其前兆孕育发展过程.地球物理学报,19,74——93,

    [8] 朱成男、陈承照,1976, 1974年云南省昭通地震破裂机制.地球物理学报,19,317——329,

    [9] 刘正荣、雷素华、胡素华,1977, 1974年5月11日云南省永善一大关地震.地球物理学报,20,110——114.

    [10] 刘万琴、陈运泰,1979.由瑞雷波方向性函数研究1974年5月11日云南昭通地震的震源过程.地震学报,1,9——37,

    [11] 曾融生、师洁珊,1978, 1974年5月10日云南省永善一大关主震的多重性,地球物理学报,21,160——173,

    [12] 马宗晋、傅征祥、张郧珍、汪成民、张国民、刘德富,1982, 1966——1976年中国九大地震,1——216.地震出版社,北京.

    [13] Aki, K. and Richards, P. G., 1980. Quantitative Seismology——Theory and hfethods., 383——476 Freeman,

    [14] Cormier, V. E. and Richards, P. G., 1988. Spectral Synthesis of Body Waves is Earth ModelsSpecified by Vertically Varying Layers,:。Seismological Algorithms. Academic Press.

    [15] 涂果明、周蕙兰,1982.地震学原理.科学出版社,北京.

    [1] 鄢家全、时振粱、汪素云、环文林X1979.中国及邻区现代构造应力场的区域特征.地震学报,1,9——24

    [2] 魏光兴,1980.关于渤海地震震源断层面的讨论.地震地质,2,3,64,

    [3] 束沛溢、李幼铭、铁安、姚振兴,1983.利用远震P波波形反演渤海地震的震源参数.地球物理字报,26——38

    [4] 卓饪如、Kanamori, H., 1988,渤海地震的震源参数.地震学报,10,213——217,

    [5] 周蕙兰、刘斌,1988_——维单侧移动源混成波第一峰(谷)值法判断断层面和1969年渤海地震发震断层探讨—渤海地震研究(一).中国地震,4,2,72——79

    [6] 周蕙兰、吉连祥、魏东平、刘斌,1989,多台波形确定震源深度的l1/2min和方法及1969年渤海大震初始破裂点的深度—渤海地震研究(二).中国地震,5,1,33——37,

    [7] 蜀水,1976震源应力场岩石膨胀性和水的扩散作用—云南省永善7.1级地震及其前兆孕育发展过程.地球物理学报,19,74——93,

    [8] 朱成男、陈承照,1976, 1974年云南省昭通地震破裂机制.地球物理学报,19,317——329,

    [9] 刘正荣、雷素华、胡素华,1977, 1974年5月11日云南省永善一大关地震.地球物理学报,20,110——114.

    [10] 刘万琴、陈运泰,1979.由瑞雷波方向性函数研究1974年5月11日云南昭通地震的震源过程.地震学报,1,9——37,

    [11] 曾融生、师洁珊,1978, 1974年5月10日云南省永善一大关主震的多重性,地球物理学报,21,160——173,

    [12] 马宗晋、傅征祥、张郧珍、汪成民、张国民、刘德富,1982, 1966——1976年中国九大地震,1——216.地震出版社,北京.

    [13] Aki, K. and Richards, P. G., 1980. Quantitative Seismology——Theory and hfethods., 383——476 Freeman,

    [14] Cormier, V. E. and Richards, P. G., 1988. Spectral Synthesis of Body Waves is Earth ModelsSpecified by Vertically Varying Layers,:。Seismological Algorithms. Academic Press.

    [15] 涂果明、周蕙兰,1982.地震学原理.科学出版社,北京.
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