【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 .更多还原

【Abstract】 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.更多还原