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Investigation of low-latitude E and valley region irregularities: Their relationship to equatorial plasma bubble bifurcation

文献类型：期刊论文

作者Li, Guozhu1; Ning, Baiqi1; Patra, A. K.2; Wan, Weixing1; Hu, Lianhuan1
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2011-11-17
卷号116
ISSN号0148-0227
DOI10.1029/2011JA016895
文献子类Article
英文摘要The low-latitude E, valley and F region 3 m scale irregularities are studied with the Sanya (18.4 degrees N, 109.6 degrees E, dip latitude 12.8 degrees N) VHF coherent scatter radar. The observations show that the E region irregularities (ERIs) often weaken or disappear during the development of postsunset equatorial plasma bubbles (EPBs) in equinoctial months. However, the valley region irregularities (VRIs) are found to occur during the EPB development and show structures with close relation to those of EPBs. The interesting aspect is that the ERI disruption and VRI generation are simultaneously detected. In terms of the electric field coupling from the equatorial F region down to low-latitude E and valley regions, the polarization electric fields (PEFs) associated with the EPB bifurcation are suggested to play key roles in the evolution of ERIs and VRIs. It is shown that the mapping of upward and eastward PEFs generated within the equatorial west tilted bubble would inhibit the occurrence of low-latitude ERIs. However, for the east tilted bubble structure, the associated downward PEFs might map to the low-latitude valley region and play an active role for the development of 3 m scale irregularities through gradient drift instability.
WOS关键词SPREAD-F ; MAGNETIC FIELD ; MANIFESTATION ; DISRUPTION ; RADAR
WOS研究方向Astronomy & Astrophysics
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000297259600004
资助机构Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; 41074113 ; 41074113 ; 41074113 ; 41074113 ; 41174136) ; 41174136) ; 41174136) ; 41174136) ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; 41074113 ; 41074113 ; 41074113 ; 41074113 ; 41174136) ; 41174136) ; 41174136) ; 41174136) ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; 41074113 ; 41074113 ; 41074113 ; 41074113 ; 41174136) ; 41174136) ; 41174136) ; 41174136) ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Natural Science Foundation of China(40904038 ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; Chinese Academy of Sciences(KZCX2-YW-Y10) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; 41074113 ; 41074113 ; 41074113 ; 41074113 ; 41174136) ; 41174136) ; 41174136) ; 41174136)
源URL[http://ir.iggcas.ac.cn/handle/132A11/73600]  
专题中国科学院地质与地球物理研究所
通讯作者Li, Guozhu
作者单位1.Chinese Acad Sci, Beijing Natl Observ Space Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Natl Atmospher Res Lab, Gadanki 517112, Andhra Pradesh, India
推荐引用方式
GB/T 7714		 Li, Guozhu,Ning, Baiqi,Patra, A. K.,et al. Investigation of low-latitude E and valley region irregularities: Their relationship to equatorial plasma bubble bifurcation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2011,116.
APA Li, Guozhu,Ning, Baiqi,Patra, A. K.,Wan, Weixing,&Hu, Lianhuan.(2011).Investigation of low-latitude E and valley region irregularities: Their relationship to equatorial plasma bubble bifurcation.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,116.
MLA Li, Guozhu,et al."Investigation of low-latitude E and valley region irregularities: Their relationship to equatorial plasma bubble bifurcation".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 116(2011).

入库方式： OAI收割

来源：地质与地球物理研究所

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