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| 引用本文： | 郭良迁,薄万举,胡新康.?????????????????[J].大地测量与地球动力学,2010,30(5):8-14. |
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| 作者姓名： | 郭良迁 薄万举 胡新康 |
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| 作者单位： | 中国地震局第一监测中心,天津,300180 |
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| 基金项目： | 天津市应用基础研究课题 |
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| 摘 要： | ????1995??1999??1999??2004???2004??2009????????GPS??????????????????????????????????????????????????????о?????????????????????????????????????????????????????????????????????????????????????????????μ?С???????????????仯?????????????е?????????????е????????????????????????????Σ????????????????????????????????????????????????????????????????
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| 关 键 词： | GPS ??????? ??????? ????????? ????????? |
CHARACTERISTICS OF HORIZONTAL STRAIN FIELD IN TIANJIN |
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| Guo Liangqian,Bo Wanju,Hu Xinkang.CHARACTERISTICS OF HORIZONTAL STRAIN FIELD IN TIANJIN[J].Journal of Geodesy and Geodynamics,2010,30(5):8-14. |
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| Authors: | Guo Liangqian Bo Wanju Hu Xinkang |
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| Institution: | First Crust Monitoring and Application Center, CEA,Tianjin 300180 |
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| Abstract: | On the basis of the observations from Tianjin GPS site during 1995-1999, 1999-2004 and 2004-2009, the principal strain rate and the difference of strain rate of fault zone were calculated for different blocks. The results show that the principal compressive stress direction of the overall Tianjin was the NW direction in the first two periods, the NEE direction in the last period, which is revealed by the direction of principal strain. The principal compressive stress direction of secondary small block changes considerably. Some of faults in block boundaries have become strain gradient zone, while the others are not obvious. The differences between the differential strain rate of fault zone are significant in different periods. Seismic activity has a certain relationship with high strain zone, strain gradient zone, and the zone with higher differential strain rate of fault zone. |
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| Keywords: | GPS principal strain rate plane strain rate maximal shear strain rate differential strain rate |
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