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Magnetic Configurations of the Tilted Current Sheets in Magnetotail : Volume 26, Issue 11 (17/11/2008)

By Shen, C.

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Book Id: WPLBN0004001941
Format Type: PDF Article :
File Size: Pages 19
Reproduction Date: 2015

Title: Magnetic Configurations of the Tilted Current Sheets in Magnetotail : Volume 26, Issue 11 (17/11/2008)  
Author: Shen, C.
Volume: Vol. 26, Issue 11
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Dunlop, M., Shen, C., Malova, H. V., Li, X., Rong, Z. J., Lucek, E.,...Carr, C. (2008). Magnetic Configurations of the Tilted Current Sheets in Magnetotail : Volume 26, Issue 11 (17/11/2008). Retrieved from

Description: State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China. In this research, the geometrical structures of tilted current sheet and tail flapping waves have been analysed based on multiple spacecraft measurements and some features of the tilted current sheets have been made clear for the first time. The geometrical features of the tilted current sheet revealed in this investigation are as follows: (1) The magnetic field lines (MFLs) in the tilted current sheet are generally plane curves and the osculating planes in which the MFLs lie are about vertical to the equatorial plane, while the normal of the tilted current sheet leans severely to the dawn or dusk side. (2) The tilted current sheet may become very thin, the half thickness of its neutral sheet is generally much less than the minimum radius of the curvature of the MFLs. (3) In the neutral sheet, the field-aligned current density becomes very large and has a maximum value at the center of the current sheet. (4) In some cases, the current density is a bifurcated one, and the two humps of the current density often superpose two peaks in the gradient of magnetic strength, indicating that the magnetic gradient drift current is possibly responsible for the formation of the two humps of the current density in some tilted current sheets. Tilted current sheets often appear along with tail current sheet flapping waves. It is found that, in the tail flapping current sheets, the minimum curvature radius of the MFLs in the current sheet is rather large with values around 1 RE, while the neutral sheet may be very thin, with its half thickness being several tenths of RE. During the flapping waves, the current sheet is tilted substantially, and the maximum tilt angle is generally larger than 45°. The phase velocities of these flapping waves are several tens km/s, while their periods and wavelengths are several tens of minutes, and several earth radii, respectively. These tail flapping events generally last several hours and occur during quiet periods or periods of weak magnetospheric activity.

Magnetic configurations of the tilted current sheets in magnetotail

Angelopoulos, V., Kennel, C., Coroniti, F., Pellat, R., Kivelson, M., Walker, R., Russell, C., Baumjohann, W., Feldman, W., and Gosling, J.: Statistical Characteristics of Bursty Bulk Flow Events, J. Geophys. Res., 99, 21 257–21 280, 1994.; Asano, Y., Nakamura. R., Baumjohann, W., Runov, A., Vörös, Z., Volwerk, M., Zhang, T. L., Balogh, A., Klecker, B., and H. Rème: How typical are atypical current sheets?, Geophys. Res. Lett., 32, L03108, doi:10.1029/2004GL021834, 2005.; Balogh, A., Carr, C. M., Acuña, M. H., et al.: The Cluster magnetic field investigation: overview of in-flight performance and initial results, Ann. Geophys., 19, 1207–1217, 2001.; Chanteur, G.: Spatial Interpolation for four spacecraft: Theory, in: Analysis Methods for Multi-Spacecraft Data, edited by: Paschmann, G. and Daly, P. W., p. 349, ESA Publications Division, Noordwijk, The Netherlands, 1998.; Dunlop, M. W., Balogh, A., Glassmeier, K.-H., and Robert, P.: Four-point Cluster application of magnetic field analysis tools: The Curlometer, J. Geophys. Res., 107, 1384, doi:10.1029/2001JA005088, 2002.; Dunlop, M. W. and Woodward, T. I.: Multi-spacecraft discontinuity analysis: Orientation and motion, in: Analysis Methods for Multi-Spacecraft Data, edited by: Paschmann, G. and Daly, P. W., p. 271, ESA Publ. Div., Noordwijk, Netherlands, 1998.; Erkaev, N. V., Semenov, V. S., and Biernat, H. K.: Magnetic double gradient mechanism for flapping oscillations of a current sheet, Geophys. Res. Lett., 35, L02111, doi:10.1029/2007GL032277, 2008.; Escoubet, C. P., Fehringer, M., and Goldstein, M.: The Cluster mission, Ann. Geophys., 19, 1197–1200, 2001.; Fairfield, D. H.: A statistical determination of the shape and the position of the geomagnetic neutral sheet, J. Geophys. Res., 85, 775–780, 1980.; Fairfield, D. H., Hones, E. W., and Meng, C. I.: Multiple crossing of a very thin plasma sheet in the Earth's magnetotail, J. Geophys. Res., 86, 11 189–11 200, 1981.; Golovchanskaya, I. V. and Maltsev, Y. P.: On the identification of plasma sheet flapping waves observed by Cluster, J. Geophys. Res., 32, L02102, doi:10.1029/2004GL021552, 2005.; Harris, E. G.: On a plasma sheet separating regions of oppositely directed magnetic field, Nuovo Cimento, 23, 115–121, 1962.; Harvey, C. C.: Spatial gradients and the volumetric tensor, in: Analysis Methods for Multi-Spacecraft Data, edited by: Paschmann, G. and Daly, P. W., p. 307, ESA Publications Division, Noordwijk, The Netherlands, 1998.; Kaymaz, Z., Siscoe, G., Luhmann, J. G., Fedder, J. A., and Lyon, J. G.: Interplanetary Magnetic Field Control of Magnetotail Field: IMP 8 Data and MHD Model Compared, J. Geophys. Res., 100, 17 163–17 172, 1995.; Liu, Z. X., Escoubet, C. P., Pu, Z., Laakso, H., Shi, J. Q., Shen, C., and Hapgood, M.: The Double Star Mission, Ann. Geophys., 23, 2707–2712, 2005.; Lui, A. T. Y., Meng, C.-I., and Akasofu, S.-I.: Wavy nature of the magnetotail neutral sheet, Geophys. Res. Lett., 5, 279–282, 1978.; Lui, A. T. Y.: Characteristics of the cross-tail current in the Earth's magnetotail, in: Magnetospheric Currents, AGU Geophysical Monograph, 28, 158–170, 1984.; Lui, A. T. Y.: Potential plasma instabilities for substorm expansion onsets, Space Sci. Rev., 113, 127–206, 2004.; Malova, H. V., Zelenyi, L. M., Popov, V. Y., Delcourt, D. C., Petrukovich, A. A., and Runov, A. V.: Asymmetric thin current sheets in the Earth's magnetotail, Geophys. Res. Lett., 34, L16108, doi:10.1029/2007GL030011, 2007.; Nakamura, R., Baumjohann, W., Runov, A., and Asano, Y.: Thin Current Sheets in the Magnetotail Observed by Cluster, Space Sci. Rev., 122, 29–38, 2006.; McComas, D. J., Russell, C. T., Elphic, R. C., and Bame, S. J.: The Near-Earth Cross-Tail Current Sheet: Detailed ISEE1 and 2 Case Studies, Geophys. Res., 91, 4287–4301, 1986.; Nakagawa, T. and Nishida, A.: Southward magnetic field in the neutral sheet produced by wavy motions in the dawn-dusk direction, Geophys. Res. Lett., 11, 1265–1268, 1989.; Ness, N. F.: The Eart


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