【摘要】 8 1级地震发生前地震活动性图像显示出多种异常形态 ,地震背景空区、地震条带、小震活动平静等地震活动性异常配套出现。余震集中区远离主震震中 ,并在地表形成 3 50km的破裂形变带。 8 1级地震后东昆仑断裂带中段出现中等地震平静 ,应力场呈闭锁状态 ,有较强地震的孕育迹象更多还原

【Abstract】 Seismicity patterns are many abnormal shapes before the earthquake with M s 8 1 ,such as background gaps,belts and quiet of small earthquakes.Epicenters of aftershocks are far away from the main shock,and formed a rupture belt with 350km. Middle earthquakes are quiet in the middle segment of the eastern Kunlun fault,the stress field is blocking,and is a strong earthquake seismogenic zone.更多还原