| Seismotectonic Model for 1966 Xingtai Earthquake Swarm—Nucleation of Newly Generted Fault or Friction Stick—slip Along a Preexisting Active Fault |
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| 引用本文： | XuXiwei GuMengling 等.Seismotectonic Model for 1966 Xingtai Earthquake Swarm—Nucleation of Newly Generted Fault or Friction Stick—slip Along a Preexisting Active Fault[J].中国地震研究,2001,15(2):174-189. |
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| 作者姓名： | XuXiwei GuMengling |
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| 作者单位： | [1]InstituteofGeology,ChinaSeismologicalBureau,Beijing100029,China [2]ResearchCenterofGeophysicalExploration,CSB,Zhengzhou450003,China |
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| 摘 要： | Shallow seismic profiling in meizoseismal area of Xingtai earthquakes,phase division of Cenozoic movement of deep and shallow structures,analysis of characteristics of crustal and upper mantle structure,and comparative study on parameters of seismic sources indicate that the listric faults controlling the development of early Tertiary basin-range structure and eastward gently-dipping detachment below it in the Xingtai epicentral area are not related to the occurrence of Xingtai earthquakes.The Xingtai earthquake swarm is a product of threedimensional fracutre process in which the discontinuous “deep faults“,separated by NWtrending faults or by transverse barriers,successively tore,fractured,and propagated upward and ,hence,caused the stress between the adjacent deep faults to migrate and load under the action of latest tectonic stress field.The Xingtai seismogenic fault represents a “newly generated fault“ resulted from the upward tearing and propagation of the preexisting crustal“deep fault“.
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| 关 键 词： | 邢台市 地震 断层 地震波 地震大地构造学 1966年 |
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