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| ??Ms8.0????????????????α??????о? | |
| 引用本文： | 党学会,乔学军,赵斌,吕健,王恒信,张昀龙.??Ms8.0????????????????α??????о?[J].大地测量与地球动力学,2013,33(4):13-16. |
| 作者姓名： | 党学会 乔学军 赵斌 吕健 王恒信 张昀龙 |
| 作者单位： | 1. 中国地震局地震研究所(地震大地测量重点实验室),武汉430071 ;中国地震局第一监测中心,天津300180 2. 中国地震局地震研究所(地震大地测量重点实验室),武汉,430071 3. 中国地震局第一监测中心,天津,300180 4. 中铁二十局第二工程有限公司,北京,100000 |
| 基金项目： | 中国地震局地震行业科研专项，国家自然科学基金 |
| 摘 要： | ????“??????”2009??2011??????GPS?????????????????????296????????????????????????????????????μ?????????????η??????????????????????????????????????1?????????????????????б??????????????????????ο?????????????????????2????????????????????P????????????????????????????????????????????????????3?????????????????????????λ???????????????丽???????????????????????κ?????????????????????????????????????????? |
| 关 键 词： | ??????? ?????? GPS ?????η? ????α? |
CRUSTAL DEFORMATION CHARACTERISTICS AFTER Ms8.0 WENCHUAN EARTHQUAKE IN SICHUAN-YUNNAN REGION |
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| Dang Xuehui;Qiao Xuejun;Zhao Bin;Lü Jian;Wang Hengxin;Zhang Yunlong.CRUSTAL DEFORMATION CHARACTERISTICS AFTER Ms8.0 WENCHUAN EARTHQUAKE IN SICHUAN-YUNNAN REGION[J].Journal of Geodesy and Geodynamics,2013,33(4):13-16. | |
| Authors: | Dang Xuehui;Qiao Xuejun;Zhao Bin;Lü Jian;Wang Hengxin;Zhang Yunlong |
| Institution: | Dang Xuehui;Qiao Xuejun;Zhao Bin;Lü Jian;Wang Hengxin;Zhang Yunlong;Key Laboratory of Earthquake Geodesy,Institute of Seismology,CEA;First Crust Monitoring and Application Center,CEA;No. 2 Engineering Corporation Limited of CR20G; |
| Abstract: | The velocity field of the 296 stations in the Sichuan??Yunnan region has been obtained with the GPS observation data of the CMONOC from 2009 to 2011. Based on the continuous deformation hypothesis, we use the data of the horizontal velocity field to compute the distribution of horizontal strain field in this region by the triangle method. Preliminary analysis indicates that: 1?? In Sichuan??Yunnan region, the crustal movement of north and west is stronger than that of south and east. The Sichuan??Yunnan rhombic block is characterized by clockwise rotation. 2?? The directions of the principal compressive strain axis and the P axis of the focal mechanism solution show that tectonic stress field in this region is relatively stable in a long term. 3?? The high value areas of the principal strain and the maximum shear strain rate are in the Longmenshan fault zone and its surrounding region. In addition to the above areas, the significant high??value properties of the maximum shear strain rate can be seen in the south of the Xianshuihe fault zone and the northwest segment of the Red River fault zone. |
| Keywords: | Sichuan-Yunnan region strain rate field GPS triangle method crustal deformation |
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