【摘要】 总结1980—2010年祁连—西秦岭地震带地下流体有关震例,对地下流体前兆异常特征进行统计。发现:祁连—西秦岭地震带地震异常以原始曲线方法提取出的高值、化学量、中期异常为主;流体异常持续时间与震中距成负相关关系,即异常最先出现在与地震较近的台站。更多还原

【Abstract】 In this study, we attempt to statistically investigate and analyze the precursory characteristics of underground fluid base on researches of earthquake cases associated with underground fluid of the Qilian-West Qinling seismic belt from the year 1980 to 2010. The results reveal that the earthquake precursors are mainly high values, chemical amounts, and middle-term anomalies, which are retrieved from raw time series records. Meanwhile, statistical results of precursory time of underground fluid show that precursory time scale are negatively related to epicentral distance, namely precursors always firstly occurred at geodynamic observatories which are closest to the epicenters.更多还原