云南建水跃进水库宏观异常研究

Study on the Macro-anomaly in Yuejin Reservoir in Jianshui County,Yunnan Province

20 0 1年 8月初 ,云南省建水县跃进水库出现特大宏观异常———激烈的翻花冒泡现象 ,历时 5 0多天。事后研究结果表明 :该异常为区域断裂活动的表现 ,标志该区地应力增强 ,并非地震短临前兆。

In the earlier August of 2001,a tremendous macro-anomaly happened in Yuejin Reservoir in Jianshui County of Yunnan Province.It had lasted more than 50 days with violent air bubbles.An afterward study shows that the anomaly is not the short-impending precursor of earthquake but a sign of regional fault activity,suggesting the enhancement of crustal stress.