Three-dimensional energetic ion observations and the tangential magnetopause electric field

Details Three-dimensional energetic ion observations and the tangential magnetopause electric field Three-dimensional energetic ion observations and the tangential magnetopause electric field

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ssrv...22..805w&link_type=abstract

(European Space Agency, ESLAB Symposium on Advances in Magnetospheric Physics with GEOS-1 and ISEE-1 and 2, 13th, Innsbruck, Aus

Physics

2

Electric Fields, Energetic Particles, Magnetopause, Satellite Observation, International Sun Earth Explorer 1, Proton Flux Density, Radiation Distribution, Radiation Spectra

Scientific paper

Three-dimensional distributions for 24.0-44.5-keV protons are presented from the ISEE-1 medium-energy particles instrument during a magnetopause traversal at about 01:10 UT on November 20, 1977. Local time of the traversal was approximately 10:30. Ion fluxes were observed coming generally from the subsolar region, but over a wide range of latitudes. Enhanced fluxes were observed at the magnetopause crossing with strong components from the subsolar region. These observations are compared with the simultaneous electric-field observations presented by Mozer et al. (1978). Ion streaming in a direction consistent with the Y component of the drift velocity was observed, whereas streaming along the X and Z components is not seen. Based on energy arguments it is concluded that in this case, ions with energies of at least 24 keV are not the major energy carrier of the locally measured dissipation.

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