【摘要】 基于测震学Ab值、地震异常变化及空区等,对新疆北天山地震带1970年以来5级以上地震进行了系统分析,形成了该区中强震初步预测方案,即:新疆北天山地震带西区Ab值低于均值半年,东区Ab值低于均值3年;出现3级以上地震空区;2°×2°异型区内地震异常增强;出现6个月以上地震平静,就可综合考虑作出5级以上地震的预报。更多还原

【Abstract】 Based on the seismic Ab value,anomalies and seismic gaps,the earthquakes with Ms≥ 5.0 since 1970 in north of Tianshan seismic belt are analyzed,and got the middle-strong earthquakes prediction as following: if Ab value in the west of the belt is lower than the mean value for half a year;or Ab value in the east of the belt is lower than the mean value for three years;or it appears Ms≥3.0 earthquake gaps;or the earthquake anomalies are strengthened in 2° ×2° precursory area;or it appears earthquake quiet for six months,the earthquakes with Ms≥5.0 may be predicted in the area.更多还原