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Statistical backgrounds of topside-ionospheric electron density and temperature and their variations during geomagnetic activity
Li Liu-Yuan; Yang Jun-Ying; Cao Jin-Bin; Lu Li; Wu Yun; Yang Dong-Mei; 北京8701信箱
Department空间科学部
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
2011
Volume54Issue:10Pages:2437-2444
ISSN0001-5733
Language中文
KeywordTopside Ionosphere Electron Density Wedell Sea Anomaly Midlatitude Trough Electron Temperature
AbstractElectron density and temperature measured by DEMETER satellite at 710 km altitude from 17 November 2004 to 30 November 2005 are collected, and their statistical averages are calculated in each geographic cells of 2 degrees (lat) X 4 degrees (Ion) under different geomagnetic conditions. The statistical results indicate that whenever the geomagnetically quiet or active times the electron density distribution has a large Wedell Sea Anomaly (WSA) region (30 degrees W similar to 180 degrees W and 30 S 75 S, where the nighttime density of plasma is larger than the daytime) and the low-density nighttime midlatitude trough (MIT) regions (35 degrees N similar to 60 degrees N and 35 degrees S similar to 60 degrees S) in the topside ionosphere, and the electron density is maximum near the magnetic dip equator (+/- 20 degrees), indicating that Equatorial Ionization Anomaly (EIA) does not exist in the topside ionosphere of 710 km altitude. Though the geomagnetic activity causes the global increase of electron density and the latitude expanding of equatorial density peak, it does not obviously change the spatial ranges of the WSA and MIT regions. In contrast to the electron density distribution, the electron temperature is the minimum near the magnetic dip equator, whereas it is the maximum near the plasmapause, and the geomagnetic activity merely leads to the increase of electron temperature near the plasmapause.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3234
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Li Liu-Yuan,Yang Jun-Ying,Cao Jin-Bin,et al. Statistical backgrounds of topside-ionospheric electron density and temperature and their variations during geomagnetic activity[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2011,54(10):2437-2444.
APA Li Liu-Yuan.,Yang Jun-Ying.,Cao Jin-Bin.,Lu Li.,Wu Yun.,...&北京8701信箱.(2011).Statistical backgrounds of topside-ionospheric electron density and temperature and their variations during geomagnetic activity.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,54(10),2437-2444.
MLA Li Liu-Yuan,et al."Statistical backgrounds of topside-ionospheric electron density and temperature and their variations during geomagnetic activity".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 54.10(2011):2437-2444.
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