Other
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.9989h&link_type=abstract
Journal of Geophysical Research, vol. 86, Nov. 1, 1981, p. 9989-10001. Swiss National Science Foundation
Other
51
Geomagnetism, Plasmasphere, Satellite Observation, Thermal Plasmas, International Sun Earth Explorer 1, Ion Temperature, Ionospheric Ion Density, Pitch (Inclination), Positive Ions
Scientific paper
An investigation of thermal plasma behavior in the vicinity of the plasmasphere during periods of quieting magnetic activity was conducted by combining thermal ion observations made with the plasma composition experiment on ISEE 1 with plasma density profiles obtained from plasma frequency measurements made with the same satellite's plasma wave experiment. During periods in which the magnetic activity quiets, the two regions characterized by H(+):He(+):O(+) (isotropic) and H(+):O(+):He(+) (field-aligned) ion species distributions (in order of dominance) are separated by a new region in which low-energy H(+) and He(+) are found flowing along the magnetic field lines. At other times, following quieting magnetic activity, distributions having peak fluxes at 90 deg pitch angle are observed in this region.
Anderson Rachel
Baugher Charles R.
Chappell Charles R.
Horwitz James L.
Shelley Edward G.
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