论文部分内容阅读
通过对包头6.4级地震前较大范围前兆资料的研究,认为一个强烈地震在发生之前,围绕震中区不同区域内,将出现具有不同特征的前兆场异常群。其近场(△≤100km)的主要特征是具有较长时间尺度的趋势性异常;中场(100km<△≤200km)的主要特征是趋势和突发性异常并重;而远场(△>200km)则一般无趋势性异常,只有急剧变化的短临异常。
Through the study of a large range of precursory data before the M = 6.4 Baotou earthquake, it is considered that a group of precursory anomalies with different characteristics will occur around different regions of the epicenter before a strong earthquake occurs. The main feature of the near field (△ ≤100km) is the trend anomaly with a long time scale. The main feature of midfield (100km <△ ≤200km) is that the trend and sudden anomaly are equal. In the far field (△> 200km) ) Is generally no trend abnormalities, only the rapid changes of short-term anomalies.