| 太康M_S4.7地震目标区浅层结构探测 |
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| 引用本文： | 谭雅丽,王志铄,杨卓欣,朱国军,酆少英,石金虎.太康M_S4.7地震目标区浅层结构探测[J].大地测量与地球动力学,2017,37(10):1020-1023. |
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| 作者姓名： | 谭雅丽 王志铄 杨卓欣 朱国军 酆少英 石金虎 |
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| 摘 要： | 2010-10太康地区发生的M_S4.7地震和许昌-太康断裂的活动构造有关,而许昌-太康断裂在地表未留下任何构造痕迹,处于隐伏构造和隐伏活动状态。为了研究该区域的地壳浅部结构、断裂的空间展布及断裂的活动性,2015-10在太康县城以西震中区域完成了3条跨许昌-太康断裂的浅层地震反射剖面。结果表明,在深度1 000m以内,地震剖面揭示了5条断裂特征清楚的正断层,其中位于剖面南部向北倾的4条断层和位于剖面北部1条向南倾的断层形成相向倾斜关系,剖面上能分辨的断裂深度在75~150m之间,到达第四系地层,并且处于活动构造状态,这些断层可能和太康多次发生的地震有关。
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| 关 键 词： | 太康MS4.7地震区 许昌-太康断裂 浅层地震剖面 活动断层 |
Shallow Structure Exploration of the MS4.7 Earthquake Target Area in Taikang |
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| TAN Yali,WANG Zhishuo,YANG Zhuoxin,ZHU Guojun,FENG Shaoying,SHI Jinhu.Shallow Structure Exploration of the MS4.7 Earthquake Target Area in Taikang[J].Journal of Geodesy and Geodynamics,2017,37(10):1020-1023. |
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| Authors: | TAN Yali WANG Zhishuo YANG Zhuoxin ZHU Guojun FENG Shaoying SHI Jinhu |
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| Abstract: | The October 2010 MS4.7 earthquake in the Taikang area is related to the Taikang-Xuchang fault. The Taikang-Xuchang fault, which is in the buried structure and buried active state, has left no structural traces on the surface of the earth. In order to investigate the crustal shallow structure and the spatial distribution and activity of the buried faults in the area, three shallow reflection profiles crossing the buried faults are completed in the epicenter area west of Taikang county in October 2015. The results show that, in depths less than 1 000 meters, the seismic profile reveals five normal faults with obvious fracture features: four north dipping faults located in the south research area, and a south dipping fault, located in the northern research area, and formed opposite inclination in relationship. The profile can distinguish the faults with a depth between 75-150 m, and the fault’s fracture to Quaternary strata in a state of active tectonics. These faults may have a relationship with the Taikang earthquake. |
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| Keywords: | MS4 7 seismic area in Taikang Taikang-Xuchang fault shallow seismic profile active fault |
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