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Ann. Geophys., 22, 2381-2389, 2004
www.ann-geophys.net/22/2381/2004/
© European Geosciences Union 2004
Reconstruction of the magnetopause and low-latitude boundary layer topology using Cluster multi-point measurements
J. De Keyser1, G. Gustafsson2, M. Roth1, F. Darrouzet1, M. Dunlop3, H. Rème4, A. Fazakerley5, P. Décréau6, and N. Cornilleau-Wehrlin7
1Belgian Institute for Space Aeronomy, Ringlaan 3, B-1180 Brussels, Belgium
2Swedish Institute of Space Physics, Uppsala Division, Box 537, SE-751 21 Uppsala, Sweden
3Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK
4CESR, BP 4346, 9 Avenue du Colonel Roche, F-31028 Toulouse Cedex 4, France
5Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK
6LPCE/CNRS, 3A Avenue de la Recherche Scientifique, F-45071 Orléans Cédex 02, France
7CETP/CNRS, 10–12 Avenue de l’Europe, F-78140 Vélizy, France
Abstract. Multi-spacecraft data from Cluster allow for a more detailed magnetopause and
boundary layer structure determination than ever before. Reconstruction
methods, in which the time variability observed during a pass is interpreted
as being due to boundary motion and/or spatial structure, are particularly
well suited for this task. Such methods rely on the availability of plasma
and field data and adopt the tangential discontinuity hypothesis to determine
the motion, acceleration, boundary structure, boundary curvature and surface
wave speed over an extended time interval. In this paper one- and
two-dimensional reconstruction methods are applied to multi-spacecraft data
for the first time.
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