引言1978年7月28日河北省唐山、丰南一带发生了7.8级强烈地震。在这次强震发生的数年以前,京、津、唐地区已经有不少台站开始了微小地震、水氡,视电阻率、深井水位等项目的观测,取得了7级以上大震前,震中区附近多种异常现象的宝贵资料。关于这些资料,国内已有不少人做过总结和研究。但是,如何认识这些资料?特别是,那些异常现象与这次地 Introduction On July 28, 1978, a strong earthquake of magnitude 7.8 occurred in Tangshan and Fengnan areas of Hebei Province. A few years before the earthquake, quite a few stations in Beijing, Tianjin and Tang dynasties started to observe such phenomena as minor earthquakes, water radon, apparent resistivity and deep well water level. Before the earthquake of magnitude 7 or above, , Epicenter area near a variety of anomalies valuable information. About these materials, many people in China have done summary and research. However, how do you know these materials? In particular, those anomalies and this time