大姚模拟水温与“十五”数字化水温动态对比分析

通过对“十五”数字化水温分钟值与模拟水温整点值自2008年以来针对省内及周边地区发生的5．0级以上地震前后的水温动态特征进行对比分析，结果表明：“十五”数字化水温分钟值动态在省内及周边地区发生地震前出现短临、临震异常，比模拟水温整点值明显，“十五”数字化水温异常的特点是：在震前出现周期形态消失或周期突跳畸变，震后周期形态恢复较快。“十五”数字化观测采样率高，震前短临、临震异常特征明显，对临震预报预测具有较高的实用价值。

Comparison of underground water temperature data between digital and analogy in Dayao Seismic Station

In this paper we compare the digital data of the underground water temperature the analogy data of under- ground water temperature before earthquakes magnitude bigger than M5. 0 around Yunnan Province. The result shows that the former data shows clearer short-impending earthquake precursors than the latter one. Its feature is that the periodic change disappears or the sudden change becomes abnormal before quakes, and they restore after the quakes. The resolution of the digital underground water temperature is high, and the short - impending anomaly before quakes is clear. So this data is very useful in earthquake prediction.