Coupling characteristics of geological disasters and the climate fluctuation in China

This paper collects geological disasters recorded in historical data from Yuan dynasty to period of Mingguo, projects every geological disaster into a chart about time in sequence, and obtains average statistical corresponding frequencies through half gliding of 100-month windows. Analyzing these time-frequencies and statistical maps, we find out geological disasters in China have characteristics of the big period of 274-290 years and the small period of average 19.5 years. The disasters of the big period increase with the continuous change of climate, and the big period is the half of the small period of climate. While the small period is close to the period of the earth nutation, period of sun-moon-earth meeting, period of Jupiter and Saturn meeting, and the period of eclipse.