Physics
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.5663c&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 91, May 1, 1986, p. 5663-5688.
Physics
35
Neutral Sheets, Plasma Layers, Satellite Observation, Space Plasmas, Electric Fields, International Sun Earth Explorers, Magnetic Fields, Plasma Probes, Time Response
Scientific paper
The first simultaneous study of dc and ac electric and magnetic fields, E x B velocity, plasma flows, ratio of plasma to magnetic field pressure, total energy density, energetic particles, and ion composition from the ISEE satellites and ground and interplanetary magnetic fields has been made to determine (1) the relationship of the previously observed electric fields at the plasma sheet boundary and at the neutral sheet to plasma parameters, and (2) whether the phenomena occurring during quiet and active times were consistent with the formation of a near-earth neutral line during substorms or with the boundary layer model. Five observations made during the study of two substorms were seen to be in agreement with the neutral-line model. The observations are consistent with the satellite being located at varying distances from the neutral line and diffusion region where reconnection and plasma acceleration were occurring. Although the z component (into or out of the ecliptic plane) of E x B convection was generally toward the neutral sheet, there were examples when it was consistent with the inferred motion of the plasma sheet past the satellite. A synthesis of previous reports on large electric fields at the plasma sheet boundary and variable fields at the neutral sheet including the associated plasma flows is also described.
Anderson Rachel
Cattell Cynthia A.
Hones Edward W. Jr.
Mozer Forrest S.
Sharp R. D.
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