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地球与行星物理

ISSN  2096-3955

CN  10-1502/P

Citation: Jiang, C. H., Tian, R., Wei, L. H., Yang, G. B., and Zhao, Z. Y. (2022). Modeling of kilometer-scale ionospheric irregularities at Mars. Earth Planet. Phys., 6(2), 213–217. http://doi.org/10.26464/epp2022011

2022, 6(2): 213-217. doi: 10.26464/epp2022011

PLANETARY SCIENCES

Modeling of kilometer-scale ionospheric irregularities at Mars

School of Electronic Information, Wuhan University, Wuhan 430072, China

Corresponding author: ChunHua Jiang, chuajiang@whu.edu.cn

Received Date: 2021-08-03
Web Publishing Date: 2022-01-25

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.

Key words: Martian ionosphere, ionospheric irregularities, numerical simulation

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Modeling of kilometer-scale ionospheric irregularities at Mars

ChunHua Jiang, Rong Tian, LeHui Wei, GuoBin Yang, ZhengYu Zhao