摘要: Using 86 CME-interplanetary shock events, the correlation between the peak values of (a) the solar wind parameters (B_z, E_y, P_dyn) and the geomagnetic indices (SYM-H, ASY-H, Kp), (b) the coupling functions (Borovsky, Akasofu, Newell) and the geomagnetic indices, (c) the solar wind parameters/coupling functions/geomagnetic indices and the ionospheric parameter (Δf₀F_2min), are investigated. The statistical results show that in group (a), B_z min and SYM-Hmin have the best correlation, that in group (b), the best correlation is between the peak values of Akasofu function (Amin) and SYM-Hmin, and that in group (c), the best correlation is between Kp_max and Δf₀F_2min. Based on the statistical results, a method for predicting f₀F₂ of a single station is attempted to be set up. The input is modified B_z min and the outputs are SYM-Hmin and Δf₀F_2min. Then 25 CME-IPS events that caused geomagnetic storms in 1998 and 2009 are used to check the prediction method. The results show that our method can be used to predict SYM-H_min and Δf₀F_2min.