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Wu MINGXIup, WANG MINGup, SUN CICHANGup, KE ZHAOMINGup, WANG PEIDEup, CHEN YUNTAIup, F. T. Wuup2stylediv clas. 1990: ACCURATE HYPOCENTER DETERMINATION OF AFTERSHOCKS OF THE 1985 LUQUAN EARTHQUAKE. Acta Seismologica Sinica, 12(2): 121-129.
Citation: Wu MINGXIup, WANG MINGup, SUN CICHANGup, KE ZHAOMINGup, WANG PEIDEup, CHEN YUNTAIup, F. T. Wuup2stylediv clas. 1990: ACCURATE HYPOCENTER DETERMINATION OF AFTERSHOCKS OF THE 1985 LUQUAN EARTHQUAKE. Acta Seismologica Sinica, 12(2): 121-129.
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ACCURATE HYPOCENTER DETERMINATION OF AFTERSHOCKS OF THE 1985 LUQUAN EARTHQUAKE

  • 1. Institute of Geophysics, State Seismologicai Bureau; 2. Department of Geophysical Sciences, State University of New York, Binghamton, U. S. A.

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  • Published Date: September 01, 2011
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    • Abstract
  • Based on the cassette tape readings acquired from a temporary seismic network of 4 digiatal DCS-302 seismometers,the detected aftershocks are determined of the M 6.1 Luquan earthquake which occurred on 18 April 1985 in Luquan County of Yunnan Province. An alternative algorithm of least squares solution to the hypocenter parameters without normalizing the observation equations is used in locating the events. The advantage of the proposed algorithm over the damped least squares method and the singular value decomposition method is assessed in terms of processing simplicity and computation precision. The 28 aftershocks determined are located in an area roughly surrounded by the Xi Ma River,the Jiu Long River,and a number of NW and NE trending faults. The space distribution of these events suggests that they are closely related to the faulting activities of the NE direction.
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    • References (1)
  • [1] 王培德,1981.一种新型的数字磁带计录地震仪—DCS——302型地震仪.地震科学研究,3, 62——64.

    [2] Herrmann, B. R., 1979. FASTHYPO—— A hypocenter location program. Enrthg. Notes, 50,25——35.

    [3] 福赛思,G. E.,莫勒,C. B., 1979.线性代数方程组的计算机解法,19,徐树荣译,科学出版社.

    [4] Stewart, G. W., 1973. Introduction to Matrix Computation, 223, Academic press.

    [5] Lawson, C. L., and Hanson, R. J., 1974. Solving least squares problems. Pretice——Hall.

    [6] 菲赫金哥尔茨,T. M., 1954.微积分教程,第一卷,第二分册,448,叶彦谦译.人民教育出版社.

    [7] 胡鸿翔、陆涵行、王椿铺、何正勤、朱良保、颜其中、樊跃新、张国庆、邓英娥,1986,滇西地区地壳结构的爆破研究.地球物理学报,29, 133——143,

    [8] 云南省地震局综合预报研究室,1985,昆明电信传输地震台ICJ云南地震目录(1985年1——6月).

    [9] 刘正荣、陈敬,1986, 1985年4月18日云南禄劝地震,地震学报,8,增刊,161——165,

    [10] 周家玉、陈运泰、倪江川、王鸣、王培德、柯兆明、吴大铭,1985年4月18日云南省禄劝MS6 . 1地震部分余震的震源时间函数,地震学报,待发表.

    [1] 王培德,1981.一种新型的数字磁带计录地震仪—DCS——302型地震仪.地震科学研究,3, 62——64.

    [2] Herrmann, B. R., 1979. FASTHYPO—— A hypocenter location program. Enrthg. Notes, 50,25——35.

    [3] 福赛思,G. E.,莫勒,C. B., 1979.线性代数方程组的计算机解法,19,徐树荣译,科学出版社.

    [4] Stewart, G. W., 1973. Introduction to Matrix Computation, 223, Academic press.

    [5] Lawson, C. L., and Hanson, R. J., 1974. Solving least squares problems. Pretice——Hall.

    [6] 菲赫金哥尔茨,T. M., 1954.微积分教程,第一卷,第二分册,448,叶彦谦译.人民教育出版社.

    [7] 胡鸿翔、陆涵行、王椿铺、何正勤、朱良保、颜其中、樊跃新、张国庆、邓英娥,1986,滇西地区地壳结构的爆破研究.地球物理学报,29, 133——143,

    [8] 云南省地震局综合预报研究室,1985,昆明电信传输地震台ICJ云南地震目录(1985年1——6月).

    [9] 刘正荣、陈敬,1986, 1985年4月18日云南禄劝地震,地震学报,8,增刊,161——165,

    [10] 周家玉、陈运泰、倪江川、王鸣、王培德、柯兆明、吴大铭,1985年4月18日云南省禄劝MS6 . 1地震部分余震的震源时间函数,地震学报,待发表.
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