基金项目:“十一五”国家科技支撑项目(2006BAC01B02-03-01)和云南省人民政府项目(JCYB-20080601-05)共同资助.
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以不同的时间尺度,对2003~2006 年云南会泽井的水位和水温资料进行了相关性计算。结果 表明,水位和水温的趋势性变化具有很好的相关性(R=0.738,α=0.01)和同步性。较小时间尺度的相关性计算结果还显示,两者不仅有相关性和同步性,还有差异性,这种差异性特征与会泽及附近地区中强以上地震对应较好,可看作地震前兆异常,作为短期地震预报指标。
A correlation calculation for water level and water temperature in Huize well from 2003 to 2006 is conducted by different time scales.The result shows that the trend change of water level and of water temperature are of good correlation(R=0.738,α=0.01)and synchronization.Further,the correlation calculation for them by a smaller time scale shows that they are not only relevant and synchronous,but also different.This kind of difference has a better relation with medium-strong earthquakes in Huize and the nearby region.It can be regarded as the precursory anomaly of earthquakes and can be used as indicators for short-term earthquake prediction.