| 2014年2月12日于田7.3级大震对青藏东北缘地震活动的影响分析 |
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| 引用本文： | 王双绪,蒋锋云,张四新,周聪.2014年2月12日于田7.3级大震对青藏东北缘地震活动的影响分析[J].中国地震研究,2015,29(2):158-168. |
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| 作者姓名： | 王双绪 蒋锋云 张四新 周聪 |
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| 作者单位： | Second Crust Monitoring and Application Center,CEA |
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| 基金项目： | sponsored by the Special Found for the Earthquake Scientific Research of China(201208009);the Earthquake Forecast and Prediction System Program of China Earthquake Administration in 2014 |
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| 摘 要： | First of all,using the GPS velocity field from campaign GPS measurements implemented by CMONC( C hina Crustal Movement Observation) a nd TEONC( C hina Tectonic Environment Observation Networks) u p to 2013, w e analyzed the background of regional crustal horizontal movement and deformation before the M S7. 3 Yutian,Xinjiang earthquake on February 12,2014. Then,by comparing this to the vertical movement from leveling measurements,we studied the crustal movement deformation and the state of strain accumulation on the northeastern edge of Qinghai-Tibetan block.Finally,we investigated the possible effects on the earthquake activity of the northeastern edge of Tibet from the M S7. 3 Yutian earthquake. The result indicates that,the M S7. 3Yutian earthquake occurred against the background of strong tectonic movement and intensive intracontinental crustal differential movement on the edges of tectonic blocks in western China,and also that it happened in the period of the strong tectonic stress field in Qinghai-Tibetan block and its edges. The sinistral strike-slip and stress transfer of the Yutian M S7. 3 earthquake may accelerate the rupture of fault segments with high strain accumulation at the northeastern edge of Qinghai-Tibetan block( especially in Qilian Mountain fault zone,and border area of Gansu,Qinghai and Sichuan provinces on the south of western Qinling).
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| 关 键 词： | Seismicity The 2014 Yutian M_S7.3 earthquake Crustal movement and deformation Stress accumulation The northeastern edge of Qinghai-Tibetan block |
| 收稿时间： | 2014/4/28 0:00:00 |
Effects of the February 12,2014 M_S 7.3 Yutian Earthquake on Seismicity of the Northeastern Edge of Qinghai-Tibetan Block |
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| Wang Shuangxu,Jiang Fengyun,Zhang Sixin and Zhou Cong.Effects of the February 12,2014 M_S 7.3 Yutian Earthquake on Seismicity of the Northeastern Edge of Qinghai-Tibetan Block[J].Earthquake Research in China,2015,29(2):158-168. |
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| Authors: | Wang Shuangxu Jiang Fengyun Zhang Sixin and Zhou Cong |
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| Institution: | Wang Shuangxu;Jiang Fengyun;Zhang Sixin;Zhou Cong;Second Crust Monitoring and Application Center,CEA; |
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| Abstract: | |
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| Keywords: | Seismicity The 2014 Yutian MS 7 3 earthquake Crustal movement and deformation Stress accumulation The northeastern edge of Qinghai-Tibetan block |
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