| 1966年邢台地震静态库仑应力触发分析 |
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| 引用本文： | 李守勇,邹立晔,孙晴,赵爱平.1966年邢台地震静态库仑应力触发分析[J].大地测量与地球动力学,2016,36(10):918-921. |
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| 作者姓名： | 李守勇 邹立晔 孙晴 赵爱平 |
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| 摘 要： | 通过分析1966年邢台5次地震的静态库仑应力触发情况发现，前2次地震对后面的地震有较好的触发，而MS7.2以后地震的触发不理想。从而认为，随着地震的发生和震源深度的增加，岩浆活动对地壳介质的影响越来越大，地壳介质弹性性能越来越弱，即该区域浅部可以用均匀弹性半空间来近似，而深部在岩浆等因素的影响下，用均匀弹性半空间来近似存在较大的误差，不适合用弹性位错理论计算地震的触发关系。这从侧面反映了该地区岩浆活动的剧烈性和超壳断层存在的客观性。
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| 关 键 词： | 邢台地震 静态库仑应力触发 震源深度 岩浆 高导层 |
Analysis and Discussion of the Static Coulomb Stress Triggering of the 1966 Xingtai Earthquake |
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| LI Shouyong,ZOU Liye,SUN Qing,ZHAO Aiping.Analysis and Discussion of the Static Coulomb Stress Triggering of the 1966 Xingtai Earthquake[J].Journal of Geodesy and Geodynamics,2016,36(10):918-921. |
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| Authors: | LI Shouyong ZOU Liye SUN Qing ZHAO Aiping |
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| Abstract: | The 1966 Xingtai earthquake devastated densely populated areas. There were a total of five MS≥6.0 earthquakes in 21 days. Many studies have shown that there was intense magmatism under the area. Analysis of the static Coulomb stress triggering of the five earthquakes shows that the triggering of the first two earthquakes had good relations, but that the relations after the MS7.2 earthquake triggering were not ideal. This paper argues that, as the earthquakes occurred, the focal depth increases, the impact on the crust magmatism grows, and the elastic properties of crustal medium weakens. The shallow part of the region can be approximated with homogeneous elastic half-space. However, for the deeper part, under the influence of magma and other factors, there is a big error in calculation of earthquake triggering with homogeneous elastic half-space. This is not suitable for calculating the earthquake triggered by the elastic dislocation theory. Furthermore, this also reflects the regional magmatic activity and the objectivity of the existence of the super crust fault. |
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| Keywords: | Xingtai earthquake static Coulomb stress triggering focal depth magma high conductive layer |
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