Figure 2
From: Measuring small-scale plasma irregularities in the high-latitude E- and F-regions simultaneously
Three conjunctions between Swarm satellites and icebear 3D. Panels (a,d,g) show icebear 3D echo signal-to-noise ratio (SNR) in a colorscale and Swarm orbit in black line. The solid black line corresponds to the stretch of orbit used for the density measurements in panels (b,e,h). Panels (c,f,i) compare the E-region clustering spectra (solid red line) with the F-region density spectra (solid black line), normalized to the same rms. Black dashed lines show a double-slope fit of the F-region density spectra, with a white circle denoting the location of the break-point. In all nine panels, black-colored data stem from the Swarm satellites (the 16 Hz density dataset), and red-colored data stem from icebear. Note that panels (a,d,g) are all wholly within icebear’s field-of-view — echo detection is generally sparse at any given time.
