| 3-D structural reconstruction of Moho in the Tangshan earthquake area by using inversion of curved interface |
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| 作者姓名： | 赖晓玲 张先康 郑需要 |
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| 作者单位： | XIAO LING LAI XIAN KANG ZHANG XU YAO ZHENGResearch Center of Exploration Geophysics，State Seismological Bureau，Zhengzhou 450003，China |
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| 摘 要： | ３ＤｓｔｒｕｃｔｕｒａｌｒｅｃｏｎｓｔｒｕｃｔｉｏｎｏｆＭｏｈｏｉｎｔｈｅＴａｎｇｓｈａｎｅａｒｔｈｑｕａｋｅａｒｅａｂｙｕｓｉｎｇｉｎｖｅｒｓｉｏｎｏｆｃｕｒｖｅｄｉｎｔｅｒｆａｃｅＸＩＡＯＬＩＮＧＬＡＩ（赖晓玲）ＸＩＡＮＫＡＮＧＺＨＡＮＧ...
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| 收稿时间： | 25 May 1996 |
| 修稿时间： | 26 November 1996 |
3-D structural reconstruction of Moho in the Tangshan earthquake area by using inversion of curved interface |
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| Xiao-Ling Lai, Xian-Kang Zhang and Xu-Yao Zheng.3-D structural reconstruction of Moho in the Tangshan earthquake area by using inversion of curved interface[J].Acta Seismologica Sinica(English Edition),1997,10(5):625-637. |
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| Authors: | Xiao-Ling Lai Xian-Kang Zhang and Xu-Yao Zheng |
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| Institution: | (1) Research Center of Exploration Geophysics, State Seismological Bureau, 450003 Zhengzhou, China |
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| Abstract: | A method for inverting 3 D curved interface and layer velocity by using travel time of reflected waves is studied. Each interface is described with sectional, incomplete cubic polynomial. A fast 3 D ray tracing method is used in forward problem, and a least squares method with variable damping is adopted in the inverse problem. Result from numerical modelling shows that the solution can converge fast on the true model. Observational data from the Tangshan earthquake area are processed, 3 D Moho discontinuity in the area is rebuilt, and finally, the relationship between the regional structure and seismicity is revealed. |
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| Keywords: | sectional incomplete polynomial interface 3 D ray tracing 3 D structure of Moho in the Tangshan earthquake area |
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