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An investigation on the variations of dayside and nightside electron densities of the Martian ionosphere
Zhang XueXi1; Lei JiuHou1; Wan WeiXing2; Zhong JiaHao1
2018-08-01
发表期刊CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
卷号61期号:8页码:3113-3123
摘要In this study, electron density data from Langmuir Probe and Waves (LPW) instrument onboard MAVEN are used to investigate the variations of the Martian ionosphere with Solar Zenith Angle (SZA) and the day-night difference of electron density. By analyzing electron density data during 2014-2017, we found that, the photochemical process is more important than the transport process below 200 km, and the day-night plasma transport can affect the electron density at SZA < 110 degrees. For the region above 200 km, the transport process can greatly affect the structure of the topside ionosphere, and the day-night difference of electron densities is much smaller than that below 200 km, and electron density decreases gradually with increasing SZA. In addition, we analyzed the electron density data during MAVEN's deep-dip campaigns. It was found that the strong geomagnetic fields in the southern hemisphere could affect the electron density at night. The closed geomagnetic lines might obstruct the electron precipitating process and cause a decrease in electron density as compared with surrounding regions. By comparing the electron density profiles during the deep-dip campaigns, it was found that the precipitation electrons probably affect the electron density below 160 km at night.
关键词Mars MAVEN Ionosphere Electron density Solar zenith angle Day-night
DOI10.6038/cjg2018M0099
关键词[WOS]MARS
语种英语
WOS研究方向Geochemistry & Geophysics
WOS类目Geochemistry & Geophysics
WOS记录号WOS:000442058500001
出版者SCIENCE PRESS
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/89196
专题地球与行星物理院重点实验室
通讯作者Lei JiuHou
作者单位1.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
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Zhang XueXi,Lei JiuHou,Wan WeiXing,et al. An investigation on the variations of dayside and nightside electron densities of the Martian ionosphere[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(8):3113-3123.
APA Zhang XueXi,Lei JiuHou,Wan WeiXing,&Zhong JiaHao.(2018).An investigation on the variations of dayside and nightside electron densities of the Martian ionosphere.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(8),3113-3123.
MLA Zhang XueXi,et al."An investigation on the variations of dayside and nightside electron densities of the Martian ionosphere".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.8(2018):3113-3123.
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