摘要
分析了天祝电磁波观测资料在5次MS>4.0地震前的异常特征.结果表明一般地震前20天以内出现趋势异常变化,前兆表现为日均值由一位数突然上升到4位数以上.
The anomaly features in electromagnetic wave data of Tianzhu station before five MS>4.0 earthquakes are analyzed.The result shows that the trend anomaly appears from on to 20 days before mediumstrong earthquake,and its expression is,daily value rising suddenly from onedigit number to fourdigit number.
引文
①赵学普 ,贺霞君 .电磁脉冲地震前兆及短临预报研究 . 1 994.
② 甘肃省地震局 .甘肃省震情研究报告 . 2 0 0 1 .
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