异常地震活动的一种统计检验方法

• 作 者: 牛志仁
• 机 构: 陕西省地震局
• 出 处: 西北地震学报
• 发表日期: 1980年02期
• 关键词: 地震活动性 地震孕育 活动背景 统计检验方法 时间间隔 震源 Poisson 孕震 西北地震学报 子样平均值

一、引言国内外不少工作已经指出,较大地震发生前后震源附近的地震活动性会出现异常变化,这种异常变化有可能做为地震予报的一个指标。由于与较大地震孕育相伴随的异常地震活动是发生在正常地震活动背景上的。这种异常地震活动有可能被背景地震所掩盖,所以从正常地震活动背景中客观地区分出异常地震活动也不是那么简单的。为了将“以震报震”方法的探

I. INTRODUCTION Many domestic and foreign work have pointed out that before and after the occurrence of major earthquakes, the seismic activity near the source will be abnormally changed. Such anomalous change may be used as an indicator for the earthquake to be reported. Anomalous seismic activity that accompanies larger geocentric occurrence occurs on the background of normal seismic activity. Such anomalous earthquakes may be masked by background earthquakes, so it is not so simple to objectively distinguish the abnormal earthquakes from the normal earthquakes. In order to “earthquake” method of exploration