福建水口库区地震性质讨论

水口水库建成蓄水后，库区出现了频繁的地震活动，这可能是原有构造地震的进一步活动，也可能是水库诱发的。因此，有必要对水口水库蓄水后发生的地震性质进行判断。本文根据国内外已发生水库诱发地震震例资料和以往经验，结合水口库区具体情况，用定性判断法、概率法、扩散系数判别法等，对水口库区地震性质进行验证和判断，结果认为：水口库区蓄水后发生的地震属诱发地震。

Discussion on the seismic quality in the Shuikou reservoir area of Fujian province

After the Shuikou reservoir is built and retains water, frequent seismic activity has taken place, which is possible activity of intrinsic structure earthquake or induced earthquake by reservoir. In order to follow the trend of seismic development, it is necessity to determine seismic quality in Shuikou reservoir area after retaining water. Based on the instances of induced earthquake by reservoir, and the practical case in the Shuikou reservoir, seismic quality in the Shuikou reserving is verified and determined by qualitative analysis and probability evaluation. As a result, it is considered that the earthquakes after Shuikou reservoir retains water belong to induced earthquake by reservoir.