鄂尔多斯块体周缘强震活动时空特征及地震危险性分析
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摘要
采用公元 4 0 0～ 2 0 0 0年MS ≥ 6 .0地震资料 ,研究鄂尔多斯块体周缘 ( 34°～ 4 2°N ,1 0 4 .5°～ 1 1 4 .5°E)强震活动时空特征 .结果表明 ,鄂尔多斯周缘强震活动具有时间分期性、时空迁移有序性、填空性与重复性、大地震等间隔分布特点 .地震危险性分析表明下一个 7级地震可能发生在北部边缘的阴山地震带两端 .
The spatial and temporal activity characteristics of strong earthquakes around Ordos massif (34°～42°N,104.5°～114.5°E) are studied by using the earthquake data(M S ≥ 6.0 ) from A.D. 400 to 2000.The result shows that there are characteristics of active in stages,the spatial and temporal order in migration,filling seismic gaps and epicenters repeat, distribution of strong earthquakes be equal in distance.The seismic risk analysis shows that the possible places of next M S 7 earthquake are both ends on Yinshan seismic zone in north margin of Ordos massif.
The spatial and temporal activity characteristics of strong earthquakes around Ordos massif (34°～42°N,104.5°～114.5°E) are studied by using the earthquake data(M S ≥ 6.0 ) from A.D. 400 to 2000.The result shows that there are characteristics of active in stages,the spatial and temporal order in migration,filling seismic gaps and epicenters repeat, distribution of strong earthquakes be equal in distance.The seismic risk analysis shows that the possible places of next M S 7 earthquake are both ends on Yinshan seismic zone in north margin of Ordos massif.
引文
①中国地震局监测预报司预报管理处。中国强地震目录(公元前23世纪～公元1999年).1999.
[1]国家地震局《鄂尔多斯周缘活动断裂系》课题组.鄂尔多斯周缘活动断裂系[M ].北京:地震出版社.1988.
[2]孙加林.鄂尔多斯块体北部边缘发生强震的危险性[J].西北地震学报,1985,7(增刊):13—23.
[3]李孟銮.鄂尔多斯块体周围的地震活动与构造[J].西北地震学报,1985,7(增刊):1—9.
[4]丁国瑜主编.中国岩石圈动力学概论[M ].北京:地震出版社,1991.
[1]国家地震局《鄂尔多斯周缘活动断裂系》课题组.鄂尔多斯周缘活动断裂系[M ].北京:地震出版社.1988.
[2]孙加林.鄂尔多斯块体北部边缘发生强震的危险性[J].西北地震学报,1985,7(增刊):13—23.
[3]李孟銮.鄂尔多斯块体周围的地震活动与构造[J].西北地震学报,1985,7(增刊):1—9.
[4]丁国瑜主编.中国岩石圈动力学概论[M ].北京:地震出版社,1991.
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