【摘要】 本文在对西北地区6级以上地震进行深入研究的基础上,通过与5级左右地震相对比的方式,对6级以上强震的断层气体前兆的时、空、强异常变化;阶段性变化;异常时间与震中距的对应;异常相对集中和短临信息等五个方面的特征进行了总结。该研究对未来强震前兆的识别和分析有一定的实用价值。更多还原

【Abstract】 Based on the thoroughly studies of great number of earthqukes with M≥ 6, authors summarized the following characterstics of fault-gas precursor: the changes of time, space and intensity of anomlies; phasic variation; the correspondence of anomaly time to epicentral distance; relative concentration of anomalies and short-term and impen -ding information. The studies are of practical value for distinguishing and analyzing the future strong earthqukes.更多还原