Investigation of the magnetospheric boundary plasma and magnetic field data from Explorers 33, 43, and 50

Details Investigation of the magnetospheric boundary plasma and magnetic field data from Explorers 33, 43, and 50 Investigation of the magnetospheric boundary plasma and magnetic field data from Explorers 33, 43, and 50

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ucla.reptq....s&link_type=abstract

Final Technical Report, 1 Jan. 1978 - 30 Jun. 1979 California Univ., Los Angeles.

Physics

Plasma Physics

Boundary Layers, Earth Magnetosphere, Explorer Satellites, Magnetic Field Configurations, Plasma Physics, Satellite Observation, Data Reduction, Interplanetary Magnetic Fields, Lines Of Force, Magnetosheath, Magnetospheric Ion Density, Solar Wind

Scientific paper

Understanding of the plasma depletion process in the dayside magnetosheath, the nature of magnetotail boundary motion, and the geometry of the magnetospheric boundary layers was examined. A model of the dayside boundary layers, based on the hypothesis that merging occurs only for strictly anitparallel fields was developed which provides a qualitative solution to the problem of the half-wave rectifier response of the magnetosphere to the solar wind electric field. Regarding magnetotail boundary motion, consideration of the data led to the conclusion that at lunar distance, substorms are associated with very large amplitude compressional wave motion of the sausage type. A study of IMF orientation for depletion and nondepletion cases suggests that depletion is most likely to occur for angles between the IMF and the normal to the magnetopause at the measurement location near 90 deg, in agreement with predictions. Observations of the heat flux in the dayside magnetosheath plasma suggest that the energized plasma ions have their source along a given flux tube at that intersection with the bow shock where the magnetic field is most compressed.

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