IGGCAS OpenIR  > 地球与行星物理院重点实验室
Hemispheric Asymmetry of the Vertical Ion Drifts at Dawn Observed by DMSP
Liu, Mohan1,2; Zhang, Xiao-Xin1,2; He, Fei3,4,5; Wang, Wenbin6
2018-12-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN2169-9380
Volume123Issue:12Pages:10213-10223
AbstractBased on the measurements from Defense Meteorological Satellite Program (DMSP) F12, F13, and F15 satellites in 1995-2014, we report significant hemispheric asymmetries in vertical ion drift velocity (V-z) at dawn (0500-0700 solar local time) in geomagnetic and geographic coordinates. V-z is distributed in 0300-0900 magnetic local time sector in both the northern (NH) and southern (SH) hemispheres. The north-south asymmetries are persistent no matter under what kind of seasonal, solar activity, and IMF conditions. In the polar cap, downward V-z is stronger in the SH. Such difference shows clear IMF B-Y dependence and is more significant in the local winter and/or under low solar activity conditions. In the geomagnetic coordinates, the auroral zone is dominated by upward V-z in the NH but by downward V-z in the SH statistically. In the geographic coordinates, the geographic longitudinal variation of V-z is more pronounced in the SH. The seasonal variations of high-latitude V-z are different in the NH and SH. The average asymmetric feature of V-z largely depends on the occurrence and magnitude of ion upflow/outflow, which are modulated by the combined effects of the asymmetric magnetic field configuration between the two hemispheres, and the dynamic processes in the tightly coupled ionosphere-thermosphere system, and their (probably nonlinear) interactions with each other.
DOI10.1029/2018JA025733
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation
WOS KeywordINTERPLANETARY MAGNETIC-FIELD ; LATITUDE IONOSPHERIC CONVECTION ; STATISTICAL-ANALYSIS ; ALIGNED FLOWS ; F-REGION ; UPFLOW ; POLAR ; OUTFLOW ; SOLAR ; RECONNECTION
Language英语
Funding ProjectNational Natural Science Foundation of China[41774152] ; National Natural Science Foundation of China[41704150] ; National Natural Science Foundation of China[41675155] ; National Natural Science Foundation of China[41621063] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017258] ; National Science Foundation
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000455655700012
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90220
Collection地球与行星物理院重点实验室
Corresponding AuthorZhang, Xiao-Xin
Affiliation1.Chinese Acad Meteorol Sci, China Meteorol Adm, Beijing, Peoples R China
2.China Meteorol Adm, Natl Ctr Space Weather, Key Lab Space Weather, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
6.Natl Ctr Atmospher Res, High Altitude Observ, Pob 3000, Boulder, CO 80307 USA
Recommended Citation
GB/T 7714
Liu, Mohan,Zhang, Xiao-Xin,He, Fei,et al. Hemispheric Asymmetry of the Vertical Ion Drifts at Dawn Observed by DMSP[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2018,123(12):10213-10223.
APA Liu, Mohan,Zhang, Xiao-Xin,He, Fei,&Wang, Wenbin.(2018).Hemispheric Asymmetry of the Vertical Ion Drifts at Dawn Observed by DMSP.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,123(12),10213-10223.
MLA Liu, Mohan,et al."Hemispheric Asymmetry of the Vertical Ion Drifts at Dawn Observed by DMSP".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123.12(2018):10213-10223.
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