The preliminary result of this work was obtained in 1992. At Consulting Meeting for Seismic Trends of China in Jan. 1993, we handed in a report and predicted that “Until now, the average magnitude curve
haven’t gotten risen again after a fall, and the value ofH is under 0.4, so no alarm is made by each of these two. We predicted that, seismicity of the Chinese mainland in 1993 may be at the same level as in 1991–1992, or a little higher than it, but mustn’t be very high; this is to say that no earthquake withMs⩾7.2 will occur in the Chinese mainland in 1993.”
The real situation is: No earthquake withMs⩾7.2 occurred in the Chinese mainland, and it shows that this real prediction is true.
To state succinctly: (1)In ths paper nonlinearR/S fractal method is applicated in earthquake prediction, and two algorithms RSH and RSHM are proposed. (2)R values of this two algorithms reached a notable value, and pass confidence test, so a certain efficiency is presented. But RSHM is some better. (3) It is presented by the successful prediction example that there is a good prospect in predicting with fractal method.