A Statistical Study on DH CMEs and Its Geoeffectiveness
Figure 1
Distribution of starting frequency of DH-type-II bursts for (a) nongeoeffective eventsand (b) geoeffective events and distribution of ending frequency of DH-type-II bursts for (c) nongeoeffective events and (d) geoeffective events. In the Figure the geoeffective events are shown in right side and the nongeoeffective events on left side.
