THE COMPREHENSIVE SHORT-TERM AND IMMINENT PRECURSORY INFORMATION AND PREDICTION OF EARTHQUAKE OCCURRENCE TIME

In this paper, based on the data of earthquake examples in North China, a tracing study of 13 indexes within half a year before M>5 earthquakes is madet the dominant time interval of anomalous variation is extracted in the course of P evolution with time, and in the dominant time interval we can find the time of P acceleration to form time sequence and to establish a grey prediction model t and then the earthquake occurrence time is predicted.