唐山7．8级地震水氡前兆特征的再认识

RERECOGNITION ON RADON PRECURSORY CHARACTERISTICS ASSOCIATED WITH THE TANGSHAN M7. 8 EARTHQUAKE

本文依据唐山地震丰富的观测资料，按照统一的异常判别方法，采用新的研究思路，再次对唐山地震前水氡的前兆特征进行了深入探讨。研究结果表明：唐山地震前，水氡前兆的时间分布具有整体性、阶段性、加速性和层次性；空间分布具有网络性和条带性。此外，对水氡异常的机制及其与地震孕育过程的关系做了物理解释。

According to the abundant obsesrved data from the Tangshan earthquake, by unified anomaly identification method and a new research train of thought, the precursory characteristics of radon before the Tangshan earthquake have been restudied. The research result shows that the time distribution of radon Precursors before the Tangshan earthquake showed a whole charatenristic, stage characteristic, acceleration charactcristicl the space distribution showed a network characteristic and belt characteristic. Furthermore, the relationship between the mechanism of radon anomaly and seismogenic process has beenexplained in physics.