The frontside boundary layer of the magnetosphere and the problem of reconnection

Details The frontside boundary layer of the magnetosphere and the problem of reconnection The frontside boundary layer of the magnetosphere and the problem of reconnection

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.3195h&link_type=abstract

Journal of Geophysical Research, vol. 83, July 1, 1978, p. 3195-3216. Research supported by the Science Research Council of Eng

Physics

133

Magnetopause, Magnetospheric Electron Density, Plasma Layers, Polar Regions, Proton Density (Concentration), Boundary Layer Plasmas, Graphs (Charts), Heos Satellites, Ionospheric Electron Density, Magnetic Flux, Magnetohydrodynamic Flow, Magnetosheath

Scientific paper

A study has been made of the frontside boundary layers of the magnetosphere. The study is based on plasma and magnetic field data from Heos 2. Measurements were made of two-dimensional ion and electron velocity distribution functions in the 100 eV - 40 keV energy range. The data suggest that the low-latitude extension of the entry layer manifests a substantial density jump at the magnetopause and that it is thinner and less turbulent than the entry layer. The flow velocity inside the layer is lower than that of the adjacent magnetosheath. It is suggested that the layer is formed by the diffusive entry of magnetosheath plasma and/or the heating of detached plasma from the plasmasphere. Reconnection occurs in the cusp region as a transient process simultaneous to eddy convection within the entry layer. Magnetic flux is thus eroded from the front of the magnetosphere.

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