By means of this ratio and T_1, T_2, determined by seismometry, the mid long-termforecasting of earthquakes can be done.
利用此比值常数以及由测震学指标所确定的T_1和求得的T_2可以进行确定性的中长期地震预报。
2
Geological prediction is divided into long-termforecasting and short-term forecasting, which are the two successive steps in the work of geological prediction.
超前地质预报分为长期和短期两类,它们是超前地质预报工作步骤中的先后两步。
3
Because of the inherent bias in the traditional grey-forecasting model and the fixed choice of its parameter, the forecast precision is relatively low and unsuitable to the long-termforecasting.