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《Journal of Seismological Research》 2003-02
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Numerical Simulation of Influence of Rock Heterogeneity on the Relation between Magnitude and Frequency

Liang Zhengzhao Tang Chun'an Zhu Wancheng Yang Tianhong Wang Shanyong (Center for Rockbursts and Seismicity Research,Northeastern University,Shenyang 110004,China)  
Because of the limitation to test system and the location of observation stations we cannot keep the independence and integrity of the data observed in the study of relation between the magnitude and frequency and b value.In this paper,by using a numerical simulation code REPA 2D ,a sequence of complete and independent earthquakes are simulated.It reproduces the evolution of stress field in crack propagation process and the mode of acoustic emission related to the heterogeneity of rock.It is shown that the b value is influenced by heterogeneity of rock and it decreases when heterogeneity increases.
【Fund】: 国家重点基础研究发展规划 973项目《大陆强震机理与预测》 ( 95 -13 -0 7-0 1);; 国家自然科学基金 ( 5 0 1740 3 1)
【CateGory Index】: P315.8
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