In view of the important prestige of Zhang Heng’s seismoscope in world culture,scholars in different countries have performed restoration research,however,so f
The paper begins with a brief review of the research history of earthquake size measurement. On this basis,the author pointed out the following points: 1 In rec
Based on the physical model of Brownian passage time,the probabilities of recurrence of strong earthquakes on the major active faults in China are calculated in
This article made a systematic statistical analysis on the duration,spatial distribution,form,range,type and reliability of precursory anomalies based on the ob