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《Chinese Journal of Geophysics》 2009-07
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Polar ionospheric responses to 4-times rapid turnings of the IMF B_z component—EISCAT/ESR radar observations

CAI Hong-Tao~(1,2),MA Shu-Ying~(1,2),I.W.McCrea~3,J.A.Davis~3,M.Lockwood~3,S.E.Milan~41 School of Electronic Information,Wuhan University,Wuhan 430079,China2 Key Laboratory of Geospace Environment and Geodesy,CNEM,Wuhan University,Wuhan 430079,China3 Space Science and Technique Department,Rutherford Appleton Laboratory,Chilton,Oxfordshire,OX11 0QX,UK4 Department Physics and Astronomy,University of Leicester,UK  
With the observations from EISCAT/ESR radar on Feb. 12 2003, the responses of polar ionosphere, especially those of the cusp/cleft region to the 4 times rapid turnings of IMF B_z component are investigated in this paper. During this event, latitudinal location of the cusp/cleft region was found moving back and forth, likely resulted from the variations of the reeonnection sites at the magnetopause which are widely accepted to be ruled by the IMF polarity. Meanwhile, polar ionospheric plasma convection reversed several times, exhibiting strong correlation with the signs of the IMF B_z component. Correlative and timing analysis suggest that the dayside magnetosphere-ionosphere system seems to need an average reconfiguration time of approximate 3 minutes in response to the variations of the IMF polarity in polar region.
【Fund】: 国家自然科学基金项目(40874079);; 国家科技支撑计划重点项目(2006BAB18B06)资助.
【CateGory Index】: P352.7
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 Cai Hong tao 1, Ma Shu ying 1, G. Kirchengast 2 1. College of Electronic Information, Wuhan University, Wuhan 430072, China 2. Institute of Meteorology and Geophysics, Karl Franzens University Graz, Halbarthgasse 1, A 8010 Graz, Austria;A Simulation Study of Ionization Depletion in the Auroral Ionospheric F-Region Caused by Strong Convection Electric Field[J];武汉大学学报(自然科学版.英文版);2001-03
【Co-citations】
Chinese Journal Full-text Database 4 Hits
1 XU Liang~1,XU Ji-Sheng~1,A.V.Koustov~21 School of Electronic Information,Wuhan Univ.,Wuhan 430079,China2 Institute of Space and Atmospheric Studies,Univ.of Saskatchewan,Saskatoon,S7N 5E2,Canada;The response of high-latitude ionospheric convection during a southward IMF turning event[J];Chinese Journal of Geophysics;2007-06
2 ZHANG QingHe1*, LIU RuiYuan1, YANG HuiGen1, HU HongQiao1, ZHANG BeiChen1, DUNLOP Malcolm2, LESTER Mark3, BOGDANOVA Yulia4 & WALSH Andrew4 1 SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China; 2 Space Science Department, Rutherford-Appleton Laboratory, Chilton, Didcot, UK; 3 Department of Physics and Astronomy, University of Leicester, Leicester, UK; 4 Mullard Space Science Laboratory, University College London, Dorking, Surrey, UK;SuperDARN CUTLASS Finland radar observations of high-latitude magnetic reconnections under northward interplanetary magnetic field (IMF) conditions[J];中国科学:技术科学(英文版);2012-05
3 CAI HongTao1,2,MA ShuYing1,2,DUNLOP M W3,BOGDANOVA Y4,DAVIES J A3 & PITOUT F5 1 School of Electronic Information,Wuhan University,Wuhan 430079,China;2 Key Lab of Geospace Environment and Geodesy,CNEM,Wuhan 430079,China;3 SSTD,Rutherford Appleton Laboratory,Chilton,OX11 0QX,UK;4 Department of Physics,La Trobe University,Melbourne,Victoria 3086,Australia;5 Max-Planck-Institut für Extraterrestrische Physik,Garching D-37191,Germany;Cluster observations of high-altitude cusp during multiple fast-turning IMF[J];科学通报(英文版);2010-12
4 J. B. Cao A. Leonovich G. C. Zhou Z. X. Liu H. Reme I. Dandouras (Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080, China) (China-Russia Joint Research Center on Space Weather, Beijing 100080, China) (Centre d'Etude Spatiale des Rayonnements, 31028, Toulouse, France);A Theoretic Interpretation of Movement of the Cusp Equatorward Boundary[J];Chinese Journal of Space Science;2005-05
China Proceedings of conference Full-text Database 1 Hits
1 Maosheng He,Libo Liu,Weixing Wan,and Biqiang Zhao 1 Beijing National Observatory of Space Environment,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China. 2 College of Earth Science,Graduate University of Chinese Academy of Sciences,Beijing,China.;A study on the nighttime midlatitude ionospheric trough[A];[C];2012
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