Modeling of kilometer-scale ionospheric irregularities at Mars

作     者：ChunHua Jiang Rong Tian LeHui Wei GuoBin Yang ZhengYu Zhao ChunHua Jiang;Rong Tian;LeHui Wei;GuoBin Yang;ZhengYu Zhao

作者机构：School of Electronic InformationWuhan UniversityWuhan 430072China 

出 版 物：《Earth and Planetary Physics》 (地球与行星物理（英文版）)

年 卷 期：2022年第6卷第2期

页      面：213-217页

核心收录：

学科分类：07[理学] 0708[理学-地球物理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the National Natural Science Foundation of China(NSFC No.42074184 and No.41727804)。 

主　　题：Martian ionosphere ionospheric irregularities numerical simulation 

摘      要：Recently, kilometer-scale Martian ionospheric irregularities have been measured by the Mars Atmosphere and Volatile EvolutioN(MAVEN) mission(Fowler et al., 2020). In this study, we carried out a simulation of these irregularities, assuming a uniform Martian zonal neutral wind and a cosinusoidal perturbation of the plasma density as the seeding source. Results show that a vertical electric field shear could be induced by such a plasma density perturbation. We find that the vertical electric field shear causes a velocity shear of the plasma between the topside and bottomside ionosphere, which in turn is able to produce kilometer-scale ionospheric irregularities — irregularities of a smaller scale than were seen in previous simulations(Jiang CH et al., 2021). These kilometer-scale variations with altitude, in plasma density and magnetic field profiles, are comparable to the MAVEN observations.