On the Nonlinear Dust Acoustic Perturbations in the Ionosphere of Mars

Dust acoustic solitons and nonlinear periodic waves propagating in the ionosphere of Mars in plasma–dust clouds at altitudes of about 100 km have been considered. The dependence of the soliton amplitude on the charge of dust particles and plasma electron density has been studied. It is shown that an important factor influencing the soliton parameters is the adiabatic capture of plasma electrons (ions). The possibility of the existence of nonlinear periodic waves in the ionosphere of Mars has been studied. It is shown that the spatial period of the wave can be sufficient for its recording by a spacecraft. The possibility of the occurrence of dust acoustic wave perturbations in the ionosphere of Mars should be taken into account when processing and interpreting observation data.