Destabilizing Influence of the Neutral Winds for the Midnight and Post‐Midnight Ionospheric Irregularities in Brazil Sector

Abstract

The equatorial irregularities are dramatic plasma density perturbations that mainly occur at night in the ionospheric F region. Their signatures have been observed by a variety of instruments and given different names, such as the equatorial spread F, the plume-like structures in radar echoes, the scintillation of satellite signals, and plasma density bubbles (