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| 引用本文： | 陈连旺,詹自敏.?????????????????????仯????????????[J].大地测量与地球动力学,2011,31(6):1-5. |
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| 作者姓名： | 陈连旺 詹自敏 |
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| 作者单位： | 中国地震局地壳应力研究所数值模拟实验室,北京,100085 |
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| 基金项目： | 中央级公益性科研院所基本科研业务专项重点项目，中央级公益性科研院所基本科研业务专项重大项目 |
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| 摘 要： | ?????????????????????????????????????ó???????????????????????仯??????1???????????仯????????????????NNW-SSE??????????3~9 kPa a-1???????????仯???????????????NEE-SWW??????????1~6 kPa a-1?????????????????????????????????????￡?2???????????仯????????????????NNW????????????????,??????????????????????????????????仯???????????????NEE????????λ?????????????????????仯????????????????????????????????????????????п????????Щ???????????????????3?????????????????????????????????з???????????-???ε???????????????????6 kPa a-1?????-?????ε???????????????????5 kPa a-1???????κ??????媲????ε????????????????????3~4 kPa a-1??
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| 关 键 词： | ???????? ????????? ?????? ??仯???? ?????? |
NUMERICALLY MODELING OF ANNUAL CHANGE OF TECTONIC STRESS FILED IN NORTH CHINA |
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| Chen Lianwang,Zhan Zimin.NUMERICALLY MODELING OF ANNUAL CHANGE OF TECTONIC STRESS FILED IN NORTH CHINA[J].Journal of Geodesy and Geodynamics,2011,31(6):1-5. |
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| Authors: | Chen Lianwang Zhan Zimin |
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| Institution: | Chen Lianwang and Zhan Zimin(Laboratory of Numerical Modeling,Institute of Crustal Dynamics,CEA,Beijing 100085) |
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| Abstract: | On the basis of a 3 D visco elastic finite element model of lithosphere in North China, we simulated numerically the recent annual changing characteristics of tectonic stress field in the region as follows. 1)The maximum principal extensional stress is 3-9 kPa a\+\{-1\} and its azimuth lie in NNW SSE, the maximum principal compressive stress is about 1-6 kPa
a-1 and its azimuth lie in NEE SWW. The whole North China is under the extensional stress field. 2)The maximum principal extensional stress presents high in the west and low in the east,in general,and the stress of whole NE area is high,and the maximum compressive is high in the NE and SN area.This kind of change is benefical for the enhancement of the fault action in Shanxi and Liaoning areas and many speed up the potencial seismogenic process. 3)Annual cumulative rates of coulomb fracture stress in Tanlu fault belt is of a segmentation pattern that the rate of Jiashan-Guangji segment is highest(6 kPa a-1),in Anshan Liaodong Bay segment it is higher(5 kPa a-1) and others are lower (3-4 kPa a-1). |
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| Keywords: | North China tectonic stress field numerical simulation annual change characteristics active fault |
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