North China Earthquake Sciences Articles

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1The mechanism of shallow layers anomaly caused by groundwater and its related question in earthquake prediction(2)1-13

2The evolutive character of fixed leveling anomaly14-21

3The character of strong earthquake activities in north China area and the earthquake tendency31-35

4Analysis to the character of fault gas CO2 anomaly before Wuhai M4.6 earthquake36-39

5Analysis to the interference on radon of hot water well in Qicun village,Xinzhou,Shanxi Province40-43

6Application of Hurst index of earthquake frequency in the prediction of earthquake44-50

7Study on the misleading in scaling of seismic geophone constant51-55

8The digitized reconstruction of Huailai fourth well56-59

9The hardware and software system in Zhangjiakou digital precursory network branch center60-63