The HAARP project is currently studying it by artificially creating plasma in this area, and heating this region is one of the science goals of the Arecibo observatory.
The HAARP project is currently studying it by artificially creating plasma in this area, and heating this region is one of the science goals of the Arecibo observatory. The European Incoherent Scatter experiment also observes this region, the intensity of which is strongly correlated with solar activitiy. This region contains divisions where lower radiation, greater gas density, and greater recombination rates balance out, resulting in peaks known as Heaviside, or E layer, and it also includes the D, F1, and F2 layers. Lying above the mesosphere and within the thermosphere, for ten points, identify this charged layer of the atmosphere famously measured by Edward Appleton, through which radio signals may propagate.
The HAARP project is currently studying it by artificially creating plasma in this area, and heating this region is one of the science goals of the Arecibo observatory.
{ionosphere}