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Earth, Planets and Space
Figure 8 | Earth, Planets and Space

Figure 8

From: Fast and ultrafast Kelvin wave modulations of the equatorial evening F region vertical drift and spread F development

Figure 8

The local time versus day plot of ESF intensity, and the prereversal drift amplitude. The upper panel shows the local time versus day plot of the spread F (SF) intensity over Fortaleza. The SF intensity is quantified in terms of the parameter fop, the top frequency of the range spread F trace. The lower panel shows the amplitude of the prereversal vertical drift velocity peak, Vzp, that occurs near 21:00 UT (18:00 LT). The values near 20:50 UT/17:50 LT are also shown for comparison.

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