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Anomalous enhancement of ionospheric electron content in the Asian-Australian region during a geomagnetically quiet day

文献类型：期刊论文

作者Zhao, B.1; Wan, W.1; Liu, L.1; Igarashi, K.2; Nakamura, M.2; Paxton, L. J.3; Su, S. -Y.4,5; Li, G.1; Ren, Z.
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2008-11-01
卷号113期号:A11
ISSN号2169-9380
DOI10.1029/2007JA012987
文献子类Article
英文摘要We investigate an event of anomalous enhancement in ionospheric electron content on 28 June 2002 from a network of 70 GPS receivers and a chain of ionosondes distributed around the Asian-Australian sector. After local sunset, the low-latitude peak electron density of the F-2 layer (NmF2) was observed to increase by 200% compared to the 27-day median value. Geomagnetic environment was quiet during 27-28 June as the SYM-H index was larger than -20 nT and AE was less than 200 nT under conditions of a constant northward interplanetary magnetic field Bz. A continuously enhanced eastward electric field has been identified as the main cause of this effect, though it is not fully consistent with the prediction of Scherliess and Fejer (1997) for wind disturbance dynamo model. Our observations show that the ionosphere was very disturbed in the Northern Hemisphere during summer even under low geomagnetic activity. The large ionospheric disturbance may be caused by the combination of the effects due to auroral activity and tides, a combination that still needs further investigation. This work suggests that studying very large day-to-day variability under quiet geomagnetic conditions could reveal more about the coupling processes between the ionosphere and lower atmosphere.
WOS关键词WAVE-TYPE OSCILLATIONS ; TO-DAY VARIABILITY ; F-REGION ; LOW-LATITUDE ; SPORADIC-E ; THERMOSPHERIC WINDS ; MIDDLE LATITUDES ; MAGNETIC STORM ; REAL-TIME ; PLANETARY
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000260604000001
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Natural Science Foundation of China(40725014) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Knowledge Innovation Program of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/69068]  
专题中国科学院地质与地球物理研究所
通讯作者Zhao, B.
作者单位1.Chinese Acad Sci, Beijing Natl Observ Space Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Natl Inst Informat & Communicat Technol, Tokyo 1848795, Japan
3.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA
4.Natl Cent Univ, Inst Space Sci, Chungli 32054, Taiwan
5.Natl Cent Univ, Ctr Space & Remote Sensing Res, Chungli 32054, Taiwan
推荐引用方式
GB/T 7714		 Zhao, B.,Wan, W.,Liu, L.,et al. Anomalous enhancement of ionospheric electron content in the Asian-Australian region during a geomagnetically quiet day[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2008,113(A11).
APA Zhao, B..,Wan, W..,Liu, L..,Igarashi, K..,Nakamura, M..,...&Ren, Z..(2008).Anomalous enhancement of ionospheric electron content in the Asian-Australian region during a geomagnetically quiet day.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,113(A11).
MLA Zhao, B.,et al."Anomalous enhancement of ionospheric electron content in the Asian-Australian region during a geomagnetically quiet day".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 113.A11(2008).

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来源：地质与地球物理研究所

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