Two-dimensional simulation of high-frequency-induced large-scale irregularities in F region

Abstract

When the high-power high frequency （HF） wave is pumped into the ionosphere, the pump wave reflection region is another main heated area. We setup a two-dimensional model of HF ionospheric heating in the magnetic meridian at lower latitude, and obtain results according to the background parameters of the morning and evening. We find that the electronic temperature around the pump wave reflection region increases intensively, and the electronic density decreases in the same area. The electronic density increases in the areas above and under the magnetic line of the electronic density hole. The ionospheric heating effect in the evening is much obvious than that in the morning, for which the maximum change rates of electronic density are -13% and -3.6% respectively, and the maximum change rates of electronic temperature are 88% and 22%, respectively.