苏皖交界北西向断裂构造地震危险性分析
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摘要
苏皖交界近年来不断有地震发生,2012年7月发生了Ms4.9级地震,造成了一定的破坏,其社会影响大。在此震情形势下,本文通过分析苏皖交界北西向断裂构造的活动特征、北西向断裂构造与历史破坏性地震及现代2.0级以上地震间的关系,认为苏皖交界区域沿扬州—六合—高邮—盱眙—洪泽—带被北西向的自来桥—来安断裂和无锡—宿迁断裂所夹持的区域,未来有发生Ms5.0级地震的构造背景,应关注其未来地震危险性。
Earthquakes occur in the junction of Anhui and Jiangsu province recently.The Ms 4.9 earthquake appeared in July 2012 and destroyed many houses with a wide social influence.By the analysis of the north-west striking fault structure’s active characters and the relation between the north-west striking fault structure and destructive earthquakes as well as the earthquakes whose magnitude are more than 2,the region is thought as seismic risk area with the magnitude of 5 along Yangzhou,Liuhe,Gaoyou,Xuyi and Hongze,which is worth of attention.
Earthquakes occur in the junction of Anhui and Jiangsu province recently.The Ms 4.9 earthquake appeared in July 2012 and destroyed many houses with a wide social influence.By the analysis of the north-west striking fault structure’s active characters and the relation between the north-west striking fault structure and destructive earthquakes as well as the earthquakes whose magnitude are more than 2,the region is thought as seismic risk area with the magnitude of 5 along Yangzhou,Liuhe,Gaoyou,Xuyi and Hongze,which is worth of attention.
引文
[1]谢瑞征,徐徐,黄伟生.苏浙皖沪地区中强地震潜在震源区判定标志的研讨[J].地震学刊,1997,(1):11-20.
[2]郭爱香,林怀存,石玉燕.鲁苏皖交界地区地震活动特点浅析[J].华北地震科学,2003,21(1):32-38.
[3]周本刚,沈得秀.地震安全性评价中若干地震地质问题探讨[J].震灾防御技术,2006,1(2):113-120.
[4]郭良迁,黄立人.苏鲁皖地区现代构造活动性研究[J].大地测量与地球动力学,2008,28(4):17-24.
[2]郭爱香,林怀存,石玉燕.鲁苏皖交界地区地震活动特点浅析[J].华北地震科学,2003,21(1):32-38.
[3]周本刚,沈得秀.地震安全性评价中若干地震地质问题探讨[J].震灾防御技术,2006,1(2):113-120.
[4]郭良迁,黄立人.苏鲁皖地区现代构造活动性研究[J].大地测量与地球动力学,2008,28(4):17-24.
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