渔洞水库地区地震活动性和构造应力场分析

Seismic Activity and Tectonic Stress Field before and after the Water Storage of Yudong Reservoir in Zhaotong, Yunnan

统计了渔洞水库的水位变化规律,分析了水库蓄水前后库区及其附近地区的地震活动性和构造应力场特征。结果表明,水库蓄水前后研究区地震活动的图像、强度和频次都没有明显变化;水库蓄水和水位变化对研究区构造应力场没有明显的影响。

The water level variation of the Yudong reservoir in Zhaotong, Yunnan, and the seismicity and tectonic stress field in the reservoir and nearby before and after the water storage have been analyzed. The results show that the pattern, strength and frequency of the seismic activity do not change obviously before and after the water storage. Both water storage and level variation have not influenced the tectonic stress field in the study area obviously.