| 鲜水河断裂带北西段的枢纽运动与强震的发生 |
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| 引用本文： | 李天.鲜水河断裂带北西段的枢纽运动与强震的发生[J].四川地震,1996(4):62-70. |
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| 作者姓名： | 李天 |
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| 作者单位： | 四川省地震局地震地质队 |
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| 摘 要： | 由炉霍，道孕，乾宁三条次级断裂左阶斜列组合而成的鲜水河断裂带的北西段。在断裂左旋走滑运动中，普遍出现断裂的枢纽运动。在产生的枢纽轴部，是强震发生的最佳地质的构造部位。近代发生的１９７３年炉霍７．６级地震，１０２３年炉堆道孕间介促７．３级地震，１８９３年乾宁７．３级地震，都分别发生在断裂的枢纽轴部，审由于枢纽部易于造成闭锁的结果。
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| 关 键 词： | 四川 鲜水河断裂 断层滑动 历史地震 枢纽运动 |
Hinge Movement and Strong Earthquakes along the Northwest Part of Xianshuihe Fault |
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| Li Tianshao.Hinge Movement and Strong Earthquakes along the Northwest Part of Xianshuihe Fault[J].Earthquake Research in Sichuan,1996(4):62-70. |
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| Authors: | Li Tianshao |
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| Institution: | Seismological Bureau of Sichuan Province |
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| Abstract: | The northwest part of Xianshuihe fault consists of three subfractures which are Luhuo,Daofu and Qiannin Faults. When the left-latezal slip of fault happens, the hinge movementforms. Because the hinge movement is easier to be locked, it is suitable place of geologicalstructure where a strong earthquake occures. The instances of earthquake due to the hingemovement are 1973 Luhuo Ms7.6, 1923 Daofu Ms7.3 and 1893 Qiannin Ms7.3 events. |
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| Keywords: | Xianshuihe fault fault slip historical earthquake |
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