Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm21c..03a&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SM21C-03
Physics
2724 Magnetopause, Cusp, And Boundary Layers, 7835 Magnetic Reconnection
Scientific paper
Observations of the magnetopause by the four Cluster satellites are presented. We investigate electric and magnetic field, and wave, data together with particle observations obtained at satellite separations from around hundred to thousands of kilometres. Observations include examples of strong (10 mV/m) varying electric fields in narrow (much less than an ion gyroradius) boundaries, extending along the magnetopause for at least several ion gyroradii. The emissions in these ``turbulent'' boundaries are broadband in frequency. The potential drop across this narrow region can be a few hundred Volts, which may be important for energization of particles close to the magnetopause. We investigate the nature of this decoupling of ion and electron motion, and its relation to various transport processes across the magnetopause. We also compare waves and particle energization at the magnetopause with similar phenomena in the auroral region.
André Martial
Buchert Stephan
Fazakerley Andrew
Rezeau Laurence
Sauvaud J. J.
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