【摘要】 1976年4月6日内蒙古和林格尔6.3级地震是华北北部地区1次重要的地震,该地震前出现了明显的地震空段异常。介绍了该地震空段的时空特征,分析了地震空段的形成至解体与中强地震成组活动的关系。认为,地震空段可作为华北北部地区中强地震预测的中期判据,这对该地区地震预测有帮助意义。更多还原

【Abstract】 The Apr.6,1976 Helingeer earthquake of M6.3 is one of important earthquakes in northern part of the North China. There was an obvious earthquake gap anomaly before this event. The time-space feature of this earthquake gap is introduced. The relation between the earthquake gap from formation to decomposition and the composed activities of medium-strong earthquakes.The author propose that a earthquake gap can be taken as a medium-period criteria for predicting medium-strong earthquakes of northern part of the North China, which is helpful for earthquake prediction of this area.更多还原