IGGCAS OpenIR  > 地球与行星物理院重点实验室
Response of Martian ionospheric electron density to changes in solar radiation
Zhang TongTong1,2,3; Liu LiBo1,2,3; Chen YiDing1,2,3; Le HuiJun1,2,3; Zhang RuiLong1,2,3; Zhang Hui1,2,3
2022-05-01
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
Volume65Issue:5Pages:1571-1580
AbstractChanges in solar radiation is one of the main drivers in modulating variations of the Martian ionosphere. In this investigation, we report the response of the Martian ionospheric electron density to changes in solar radiation as revealed from the electron density profiles from radio occultation observations by Mars Global Surveyor (MGS) and an empirical model of the total electron content (TEC) of Martian ionosphere. After considering the solar zenith angle dependence of the ionospheric electron density, with increasing solar radiation, the peak density of the M-2 layer in the Martian ionosphere tends to increase but with a decreased rate, while the peak height and neutral scale height of the M-2 layer do not show a significant change. The TEC of the occultation electron density profiles and the bottomside and topside TEC in the 100 similar to 200 km altitude range also increase with solar radiation, but all with a slower rate, indicating that there may be a saturation feature in the Martian ionosphere, similar to the earth' s ionosphere. The ratios of bottomside and topside TEC to the TEC from the empirical model are inversely correlated with changes of solar radiation. This inverse relationship tells that with increasing solar radiation, electron densities at altitudes above 200 km account for a greater proportion of TEC. This fact means that the control of dynamic processes in the topside Martian ionosphere gradually exceeds that of the photochemical process with increasing solar activity.
KeywordMartian ionosphere Bottomside ionosphere Topside ionosphere TEC Solar radiation
DOI10.6038/cjg2022P0829
WOS KeywordDAYSIDE IONOSPHERE ; MARS ; MODEL ; TOPSIDE ; VARIABILITY ; MAVEN ; FLUX
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000796746600003
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105937
Collection地球与行星物理院重点实验室
Corresponding AuthorLiu LiBo
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Heilongjiang Mohe Observ Geophys, Beijing 100029, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang TongTong,Liu LiBo,Chen YiDing,et al. Response of Martian ionospheric electron density to changes in solar radiation[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2022,65(5):1571-1580.
APA Zhang TongTong,Liu LiBo,Chen YiDing,Le HuiJun,Zhang RuiLong,&Zhang Hui.(2022).Response of Martian ionospheric electron density to changes in solar radiation.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,65(5),1571-1580.
MLA Zhang TongTong,et al."Response of Martian ionospheric electron density to changes in solar radiation".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 65.5(2022):1571-1580.
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