HR: 08:00h
AN: SM11C-01    [Abstracts]
TI: The Boundary Layer in Transition: Structural Dependence On IMF Orientation
AU: * Lund, E J
EM: Eric.Lund@unh.edu
AF: University of New Hampshire, 39 College Rd., SSC Morse Hall, Durham, NH 03824 United States
AU: Farrugia, C J
EM: charlie.farrugia@unh.edu
AF: University of New Hampshire, 39 College Rd., SSC Morse Hall, Durham, NH 03824 United States
AU: Sandholt, P
EM: p.e.sandholt@fys.uio.no
AF: University of Oslo, Department of Physics, Oslo, N-0316 Norway
AU: Gratton, F T
EM: fgratton@arnet.com.ar
AF: INFIP, Ciudad Univ Pab 1, Buenos Aires, BA 1428 Argentina
AU: Fairfield, D H
EM: donald.h.fairfield@nasa.gov
AF: NASA Goddard Space Flight Center, MC 695, Greenbelt, MD 20771-1000 United States
AU: Wild, J A
EM: jaw11@ion.le.ac.uk
AF: Leicester University, Department of Physics and Astronomy, Leicester, LE1 7RH United Kingdom
AU: Cowley, S W
EM: swhc1@ion.le.ac.uk
AF: Leicester University, Department of Physics and Astronomy, Leicester, LE1 7RH United Kingdom
AU: Mouikis, C G
EM: cmouikis@atlas.sr.unh.edu
AF: University of New Hampshire, 39 College Rd., SSC Morse Hall, Durham, NH 03824 United States
AU: Kistler, L M
EM: lynn.kistler@unh.edu
AF: University of New Hampshire, 39 College Rd., SSC Morse Hall, Durham, NH 03824 United States
AU: Dunlop, M W
EM: M.W.Dunlop@rl.ac.uk
AF: Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX United Kingdom
AU: Reme, H
EM: henri.reme@cesr.fr
AF: Centre d'Etude Spatiale des Rayonnements, 9, ave. du colonel Roche, Toulouse, F-31029 France
AU: Carlson, C W
EM: cwc@ssl.berkeley.edu
AF: Space Sciences Laboratory, University of California, Berkeley, CA 94720 United States
AB: We examine a very slow boundary layer crossing made by the Cluster spacecraft on December 7, 2000. During the crossing the IMF rotated from due south to due north in a discontinuous fashion. Evidence from Cluster shows that the boundary layer changes from an open, reconnection-driven configuration to a closed, Kelvin-Helmholtz-driven configuration. Using simultaneous data from ground-based radars and from FAST as well as from Cluster, we investigate the changes in the convection pattern, the destabilization of the Kelvin-Helmholtz mechanism, and the response of the boundary layer to discontinuous changes in solar wind and IMF.
DE: 2724 Magnetopause, cusp, and boundary layers
DE: 2736 Magnetosphere/ionosphere interactions
DE: 2740 Magnetospheric configuration and dynamics
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting