Topside and interhemispheric ion flows in the mid-latitude plasmasphere

Details Topside and interhemispheric ion flows in the mid-latitude plasmasphere Topside and interhemispheric ion flows in the mid-latitude plasmasphere

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jatp...49..503b&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 49, no. 6, June 1987, p. 503-519.

Physics

16

Ion Motion, Ionospheric Ion Density, Midlatitude Atmosphere, Plasmasphere, F Region, Hydrogen Ions, Mathematical Models, Oxygen Ions

Scientific paper

Field-aligned ion flows in the topside ionospheres of conjugate hemispheres are modeled under solstice conditions at mid- to low latitudes, and the coupled time-dependent O(+), H(+), and electron continuity, momentum, and heat-balance equations are solved. Thermal coupling between hemispheres is shown to produce strong O(+) flows in the topside ionosphere of the summer hemisphere that are directed upwards at conjugate sunrise and are directed downwards at conjugate sunset. In both hemispheres, strong upward O(+) flows at local sunrise, and downward flows at local sunset, are found. Data from L = 1.5 and L = 3.0 show the 24-hour time-integrated interhemispheric H(+) flux to be in the summer hemisphere to winter hemisphere direction, and its magnitude is found to be in good agreement with the magnitude of the 24-hour time-integrated plasma field-aligned flux at 1000 km altitude at L = 1.5 only.

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