Fig. 7From: Multi-instrumented observations of the equatorial F-region during June solstice: large-scale wave structures and spread-FComparison of airglow intensity and echo occurrence. The top panel shows the RTI maps for August 3–4, 2016. The bottom panels show the spatial distribution of echoes observed by AMISR-14 in the magnetic equatorial plane. The times are indicated by the vertical lines in the RTI map and on top of each panel. The bottom panels also show the variation of the airglow intensity (630 nm) as a function of zonal distance (red solid line)Back to article page