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| 引用本文： | 韩月萍,陈阜超,杨国华,刘峡.????????????????????α??????????Σ???????[J].大地测量与地球动力学,2010,30(2):25-28. |
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| 作者姓名： | 韩月萍 陈阜超 杨国华 刘峡 |
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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： | 国家科技攻关计划项目，中国地震局项目 |
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| 摘 要： | ??????????????????????????????????????????????????????????????????????????????????????????????????????Σ??????????Σ?????????????????????????ε????????????????У????? ?????????????????????????? ???α???????????????????????????????????????????о??????????????????????????????????????????????????????????????????????????26 mm/a???????α?????????????????????Щ??????????α????????????(??????)??????α?????仯???2008???????????????????????????????????????п??????????????????
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| 关 键 词： | ???????????? ????α? ????Σ???? ?????? ????????? |
CHARACTERISTICS OF PRESENT-DAY CRUST VERTICAL DEFORMATION AND EARTHQUAKE RISK ANALYZES IN NORTHERN AREA OF NORTH CHINA |
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| Han Yueping,Chen Fuchao,Yang Guohua,Liu Xia.CHARACTERISTICS OF PRESENT-DAY CRUST VERTICAL DEFORMATION AND EARTHQUAKE RISK ANALYZES IN NORTHERN AREA OF NORTH CHINA[J].Journal of Geodesy and Geodynamics,2010,30(2):25-28. |
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| Authors: | Han Yueping Chen Fuchao Yang Guohua Liu Xia |
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| Institution: | First Crust Monitoring and Application Center, CEA,Tianjin 300180 |
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| Abstract: | Through the processing and analysis of multi-period precision leveling data in northern area of North China,it is found that the decline of large-number in a large-area has appeared in the western region to capital circle, the direction of contour lines is mainly to the NE, and they take vertical intersection with Zhangbo fault (NWW). There is a close relation of spatial distribution of vertical deformation to the tectonic activity, the characteristic of "up south-down north" and "up east-down west" is inconsistent with the long-term trend of tectonic movement of "high north-low south" , which is a "inverse inheritance movement". In the western region of the studied area, the quadrant-shaped distribution appears with Yanggao area as the center, relative increase of the south and north sides, relative decline of the east and west sides and the maximum difference value is 26 mm/a. This deformation state is similar to that before the Datong earthquake, however, the character of the deformation is absolutly different from Datong earthquake (up one-down another). Tectonic activities in the northern area of North China began to shift from the normal activities to the abnomal activities in 2008, it may be a strong earthquake signal. |
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| Keywords: | northern area of North China vertical deformation earthquake risk earthquake pregnant background inverse inheritance movement |
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