LIU CHANGQUAN, JIA SHIXU h. 1986: STRUCTURAL PROPERTY OF THE CRUST AND THE UPPER MANTLE IN THE TANGSHAN EARTHQUAKE REGIONA METHOD OF COMPUTING BODY WAVE THEORETICAL SEISMOGRAM AND THE RESULT OF ANALYSIS OF 2-D INHOMOGENEOUS MEDIA. Acta Seismologica Sinica, 8(4): 341-353.
Citation: LIU CHANGQUAN, JIA SHIXU h. 1986: STRUCTURAL PROPERTY OF THE CRUST AND THE UPPER MANTLE IN THE TANGSHAN EARTHQUAKE REGIONA METHOD OF COMPUTING BODY WAVE THEORETICAL SEISMOGRAM AND THE RESULT OF ANALYSIS OF 2-D INHOMOGENEOUS MEDIA. Acta Seismologica Sinica, 8(4): 341-353.

STRUCTURAL PROPERTY OF THE CRUST AND THE UPPER MANTLE IN THE TANGSHAN EARTHQUAKE REGIONA METHOD OF COMPUTING BODY WAVE THEORETICAL SEISMOGRAM AND THE RESULT OF ANALYSIS OF 2-D INHOMOGENEOUS MEDIA

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  • Published Date: August 31, 2011
  • In order to study the propagation of waves in 2-Dlaterally inhomogeneous isotropic and absolute elastic media with curved interfaces, it is appropriate to calculate the wavefield using the solution of high frequency approximate expansion for elastic wave equation, under certain conditions.For the purpose of solving the system of twopoint ray tracing under certain initial conditions, the standard program (the method of Runge-Kutta) has been used. The geometrical spreading factor is determined by solving a system of two linear ordinary differential equations of the first order (the socalled dynamic ray tracing system) with a modified Eulers method. These are realized by the Seis 83 progam.In the present paper, the authors gave calculated with the Stis 83 program the observed data from two profiles (the Baigezhang-Fengnan-Fengning-Zhenglangqi profile and the Cang-zhou-Tianjin-Kelaqinzuyi profile) which pass through the epicentral region of the Tangshan earthquake where they intersect each other approximately perpendicularly. The structural property of the crust and the upper mantle in the Tangshan earthquake region and the relation between the Seismicity and the velocity distribution in the low-velocity layer of the crust are discussed.
  • [1] 刘昌锉、杨健、京津及其外围地区地壳速度结构初步研究, 地震学报, 4, 217——226, 1982.

    [2] 刘昌锉、杨健、李捍东、焦铁华, 唐山地区柏各庄一丰南一丰宁地壳测深资料的新解释, 地球物理学报, 26, Supp., 628——640, 1983.

    [3] 刘昌栓、李捍东、孙桂香, 燕山与华北平原地壳结构特征的初步分析, 地震, 1984, 2: 19——25.

    [4] 刘国栋, 地壳上地慢结构研究的某些新进展(一), 地震学刊, 1984, 1: 29——36,

    [5] 刘国栋, 地壳上地慢结构研究的某些新进展(二), 地震学刊, 1984, 2: 17——22,

    [6] Cerveny, V., Seismic wave fields in structuallz Complicated media, Lenctures given at the Vening Meinesz Laboratory, Utrecht, 1981.

    [7] Banda, E., N. Deichmann, L. W. Braile and J. Ansorge, Amplitude study of the Ps Phase, jorsrnal of Geophysics, 51, 153——164, 1982.

    [8] 国家地震局《一九七六年唐山地震》编辑组, 一九七六年唐山地震, 70——130, 地震出版社, 1982.

    [1] 刘昌锉、杨健、京津及其外围地区地壳速度结构初步研究, 地震学报, 4, 217——226, 1982.

    [2] 刘昌锉、杨健、李捍东、焦铁华, 唐山地区柏各庄一丰南一丰宁地壳测深资料的新解释, 地球物理学报, 26, Supp., 628——640, 1983.

    [3] 刘昌栓、李捍东、孙桂香, 燕山与华北平原地壳结构特征的初步分析, 地震, 1984, 2: 19——25.

    [4] 刘国栋, 地壳上地慢结构研究的某些新进展(一), 地震学刊, 1984, 1: 29——36,

    [5] 刘国栋, 地壳上地慢结构研究的某些新进展(二), 地震学刊, 1984, 2: 17——22,

    [6] Cerveny, V., Seismic wave fields in structuallz Complicated media, Lenctures given at the Vening Meinesz Laboratory, Utrecht, 1981.

    [7] Banda, E., N. Deichmann, L. W. Braile and J. Ansorge, Amplitude study of the Ps Phase, jorsrnal of Geophysics, 51, 153——164, 1982.

    [8] 国家地震局《一九七六年唐山地震》编辑组, 一九七六年唐山地震, 70——130, 地震出版社, 1982.
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