| 浑河断裂地球物理场特征及地震活动性 |
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| 引用本文： | 张鐘月,万波,彭虎,田德欣.浑河断裂地球物理场特征及地震活动性[J].世界地质,2020,39(1):176-184. |
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| 作者姓名： | 张鐘月 万波 彭虎 田德欣 |
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| 作者单位： | 辽宁省地震局,沈阳,110034;辽宁省能源地质勘查开发研究院有限责任公司,沈阳,110024;浙江省有色金属地质勘查局,浙江绍兴,312000 |
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| 基金项目： | 中国地震局城市活断层探测与地震危险性评价项目(152007000000170013);沈抚新区浑河断裂带活断层探测与地震危险性评价(LNZC20180173);郯庐断裂带三维地震构造分段模型与地震预测研究专项(TYZ20160110)联合资助。 |
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| 摘 要： | 浑河断裂是辽宁省内一条重要的北东向地震构造带,断裂两侧的地球物理重磁场存在差异。通过浑河断裂的区域重力场与磁场研究,认为浑河断裂既控制了深、浅部岩石地层的发育,同时浑河断裂的重力场、磁场分布随着深、浅部地层岩性发育的差异而有所变化。浑河断裂的重力场和磁场梯度带主要位于抚顺以西至沈阳一带,浑河断裂历史以来有记录的最大破坏性地震位于重力梯度变化较大的沈阳段。综合浑河断裂地球物理场特征及区域地质资料,浑河断裂虽然活动性一般,但抚顺地区的采煤活动对断裂的活动性有一定影响。近些年抚顺地区频发的沉降、滑坡和地裂缝等地质灾害应当引起对浑河断裂活动性研究的重视。
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| 关 键 词： | 浑河断裂 重力场特征 磁场特征 地震 断裂活动性 |
Geophysical field characteristics and seismicity of Hunhe fault |
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| ZHANG Zhong-yue,WAN Bo,PENG Hu,TIAN De-xin.Geophysical field characteristics and seismicity of Hunhe fault[J].World Geology,2020,39(1):176-184. |
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| Authors: | ZHANG Zhong-yue WAN Bo PENG Hu TIAN De-xin |
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| Institution: | (Earthquake Administration of Liaoning Province,Shenyang 110034,China;Liaoning Energy Geological Exploration and Development Research Institute Co.,Ltd.,Shenyang 110024,China;Non-ferrous Metals Geological Exploration Bureau of Zhejiang Province,Shaoxing 312000,Zhejiang,China) |
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| Abstract: | Hunhe fault is an important northeast-trending seismotectonic belt in Liaoning Province,of which the geophysical gravity and magnetic field of the two sides are different.Based on the research of the regional gravity and magnetic field of Hunhe fault,it is concluded that Hunhe fault controls the development of deep and shallow lithostratigraphy,and the gravity and magnetic field changes with the difference of the lithologic development.Its gravity and magnetic field are mainly located in the west of Fushun to Shenyang,the most destructive earthquake recorded in the history of Hunhe fault occurred in Shenyang section where the gravity gradient varies greatly.The Hunhe fault is generally not very active according to its geophysical field characteristics and regional geological data,but the coal mining activities in Fushun have certain impact on the fault activity.There have been frequent subsidence,landslide,ground crack and other geological disasters in Fushun area in recent years,more attention should be paid to the study on the activity of Hunhe fault. |
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| Keywords: | Hunhe fault gravitational field characteristics magnetic field characteristics earthquake fault activity |
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