Articles | Volume 22, issue 7
Ann. Geophys., 22, 2381–2389, 2004

Special issue: Spatio-temporal analysis and multipoint measurements in space...

Ann. Geophys., 22, 2381–2389, 2004

  14 Jul 2004

14 Jul 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 J. De Keyser et al.
  • 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.