Fig. 5From: Day-to-day and short-term variabilities in the equatorial plasma bubble/spread F irregularity seeding and development(Top panel) the variation, during the period 01 August to 31 October 2005, in the spread F intensity represented by fop (the top frequency of the spread F trace in ionogram representative of its intensity); (middle panel) the PRE vertical drift peak on each of the days, and (bottom) the wavelet spectrum of the PRE vertical driftBack to article page