NAOC Open IR
ionosphericinversionofthevenusexpressradiooccultationdataobservedbyshanghai25mandnewnorcia35mantennas
Zhang Sujun1; Jian Nianchuan1; Li Jinling1; Ping Jinsong2; Chen Congyan3; Zhang Kefei4
2015
Source Publicationresearchinastronomyandastrophysics
ISSN1674-4527
Volume15Issue:9Pages:1559
AbstractElectron density profiles of venus' ionosphere are inverted from the venus express (vex) one-way open-loop radio occultation experiments carried out by the shanghai 25 m antenna from november 2011 to january 2012 at solar maximum conditions and by the new norcia 35 m antenna from august 2006 to june 2008 at solar intermediate conditions. the electron density profile (from 110 km to 400 km), retrieved from the x-band egress observation at the shanghai station, shows a single peak near 147 km with a peak density of about 2 x 1 0(4) c m(-3) at a solar zenith angle of 94 degrees. as a comparison, the vex radio science (vera) observations at the new norcia station were also examined, including s- and x-band and dual-frequency data in the ingress mode. the results show that the electron density profiles retrieved from the s-band data are more analogous to the dual-frequency data in terms of the profile shape, compared with the x-band data. generally, the s-band results slightly underestimate the magnitude of the peak density, while the x-band results overestimate it. the discrepancy in the x-band profile is probably due to the relatively larger unmodeled orbital errors. it is also expected that the ionopause height is sensitive to the solar wind dynamical pressure in high and intermediate solar activities, usually in the range of 200-1000 km on the dayside and much higher on the nightside. structural variations ("bulges" and fluctuations) can be found in the electron density profiles during intermediate solar activity, which may be caused by the interaction of the solar wind with the ionosphere. considerable ionizations can be observed in venus' nightside ionosphere, which are unexpected for the martian nightside ionosphere in most cases.
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/42405
Collection中国科学院国家天文台
Affiliation1.中国科学院上海天文台
2.中国科学院国家天文台
3.东南大学
4.墨尔本皇家理工大学
Recommended Citation
GB/T 7714
Zhang Sujun,Jian Nianchuan,Li Jinling,et al. ionosphericinversionofthevenusexpressradiooccultationdataobservedbyshanghai25mandnewnorcia35mantennas[J]. researchinastronomyandastrophysics,2015,15(9):1559.
APA Zhang Sujun,Jian Nianchuan,Li Jinling,Ping Jinsong,Chen Congyan,&Zhang Kefei.(2015).ionosphericinversionofthevenusexpressradiooccultationdataobservedbyshanghai25mandnewnorcia35mantennas.researchinastronomyandastrophysics,15(9),1559.
MLA Zhang Sujun,et al."ionosphericinversionofthevenusexpressradiooccultationdataobservedbyshanghai25mandnewnorcia35mantennas".researchinastronomyandastrophysics 15.9(2015):1559.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang Sujun]'s Articles
[Jian Nianchuan]'s Articles
[Li Jinling]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang Sujun]'s Articles
[Jian Nianchuan]'s Articles
[Li Jinling]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang Sujun]'s Articles
[Jian Nianchuan]'s Articles
[Li Jinling]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.