汕头台地下流体正常动态与地震短临异常

Normal fluctuation of subsurface fluid and short - term anomaly before earthquakes at Shantou station

地震前兆观测异常信息识别是前兆研究的基础。分析了汕头观测站地下流体各测项如水位、水温、气氡和气汞等观测资料，对其正常动态和短临异常信息进行了讨论。结果表明，上述各测项能够较有效地反映出某些中等地震前兆的短临异常信息。

The recognition of the anomaly information from observation data is the basis for the research on earthquake precursor. The observation data of subsurface fluid such as water level, water temperature, gas - Rn and gas - Hg at Shantou station are analyzed, and their normal fluctuation and the short -term and impending anomalies before and after some earthquakes are discussed. The results show that above - named observation data are able to reflect short - impending precusor information before some medium shocks.