1585年安徽巢县南地震核查与发震构造探讨
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摘要
1585年安徽巢县南5级地震,各版本地震目录中给出的地震参数不尽一致。文中对该次地震的历史资料进行了考证,进一步核实了该次地震的参数。通过对该地区的野外地质调查,结合在隐伏区的浅层地震勘探与钻探验证等工作,探讨了1585年巢县南地震的构造背景,认为早、中更新世活动的严家桥-枫沙湖断裂可能是该次地震的发震构造。该研究成果有助于加深对中国东部中等和弱地震活动区发震构造背景的认识。
In 1585,an earthquake with MS53/4 happened in the south of Chaoxian of Anhui Province,and the parameters of this earthquake listed in earthquake catalogues of varied versions are different.According to the detail textual research of the historical earthquake records,the epicenter location of this earthquake is further confirmed by means of field seismo-geological investigation in the Chaohu-Tongling region of the western Changjiang valley.Shallow seismic prospecting and drilling methods are applied to study the buried fault,the possibility of existence of seismogenic fault and fault activity in the western Changjiang valley area are analyzed in depth,and the causative tectonic background of the 1585 MS53/4 south Chaoxian earthquake is studied.The result of this study indicates that the Yanjiaqiao-Fengshahu Fault,which was active in early Pleistocene to mid-Pleistocene,is possibly the causative structure of this earthquake.To identify the seismogenic structure of the 1585 south Chaoxian earthquake is helpful to deeply know the tectonic background of the moderate and small earthquake activities in eastern China.
In 1585,an earthquake with MS53/4 happened in the south of Chaoxian of Anhui Province,and the parameters of this earthquake listed in earthquake catalogues of varied versions are different.According to the detail textual research of the historical earthquake records,the epicenter location of this earthquake is further confirmed by means of field seismo-geological investigation in the Chaohu-Tongling region of the western Changjiang valley.Shallow seismic prospecting and drilling methods are applied to study the buried fault,the possibility of existence of seismogenic fault and fault activity in the western Changjiang valley area are analyzed in depth,and the causative tectonic background of the 1585 MS53/4 south Chaoxian earthquake is studied.The result of this study indicates that the Yanjiaqiao-Fengshahu Fault,which was active in early Pleistocene to mid-Pleistocene,is possibly the causative structure of this earthquake.To identify the seismogenic structure of the 1585 south Chaoxian earthquake is helpful to deeply know the tectonic background of the moderate and small earthquake activities in eastern China.
引文
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中央地震工作小组.1971.中国地震目录[Z].北京:科学出版社.Central Earthquake Working Group of China.1971.Earthquake Catalog in China[Z].Science Press,Beijing(in Chi-nese).
安徽省地质矿产局.1987.安徽省区域地质志[M].北京:地质出版社.Bureau of Geology and Mineral Resources of Anhui Province.1987.Regional Geology of Anhui Province[M].Geolo-gy Press,Beijing(in Chinese).
邓起东,卢造勋,杨主恩.2007.城市活断层探测和断层活动性评价问题[J].地震地质,29(2):189—200.DENG Qi-dong,LU Zao-xun,YANG Zhu-en.2007.Remarks on urban active faults exploration and the associated activ-ity assessment[J].Seismology and Geology,29(2):189—200(in Chinese).
顾功叙主编.1983.中国地震目录[Z].北京:科学出版社.GU Gong-xu(ed).1983.Catalogue of Chinese Earthquakes[Z].Science Press,Beijing(in Chinese).
国家地震局震害防御司.1995.中国历史强震目录[Z].北京:地震出版社.Earthquake Disaster Prevention Department,SSB.1995.Catalogue of Chinese Strong Historical Earthquakes[Z].Seis-mological Press,Beijing(in Chinese).
国家质量技术监督局.1999.中国地震烈度表(GB/T17742-1999)[S].北京:中国标准出版社.The State Bureau of Quality and Technical Supervision.1999.The Chinese Seismic Intensity Scale(GB/T17742-1999)[S].Standards Press,Beijing(in Chinese).
李善邦主编.1960.中国地震目录[Z].北京:科学出版社.LI Shan-bang(ed).1960.Catalogue of Chinese Earthquakes[Z].Science Press,Beijing(in Chinese).
谢毓寿,蔡美彪主编.1983.中国地震历史资料汇编(第二卷)[Z].北京:科学出版社.XIE Yu-shou,CHAI Mei-biao(eds).1983.Summary of the Chinese Historical Earthquake Records(2)[Z].SciencePress,Beijing(in Chinese).
中央地震工作小组.1971.中国地震目录[Z].北京:科学出版社.Central Earthquake Working Group of China.1971.Earthquake Catalog in China[Z].Science Press,Beijing(in Chi-nese).
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