Modelling of electron thermal fluxes into the ionosphere during the excitation of ion cyclotron waves by the ring current

Details Modelling of electron thermal fluxes into the ionosphere during the excitation of ion cyclotron waves by the ring current Modelling of electron thermal fluxes into the ionosphere during the excitation of ion cyclotron waves by the ring current

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990angeo...8..825c&link_type=abstract

Annales Geophysicae (ISSN 0992-7689), vol. 8, Dec. 1990, p. 825-827.

Physics

1

Ion Cyclotron Radiation, Ionospheric Electron Density, Ionospheric Heating, Ring Currents, Wave Excitation, Electron Energy, Flux (Rate), Heat Transmission, Magnetic Equator

Scientific paper

An algorithm is developed for estimating ionospheric heating by ring current energy dissipation. A simple realization in which the algorithm models the electron heating by both left-hand and right-hand polarized ion cyclotron waves shows that the heating occurs away from the geomagnetic equator and is more effective with R-mode excitation. At characteristic values of ring current parameters, the occurring thermal fluxes (approximately less than 6 x 10 to the 10 eV/s cm-sq) can cause a considerable rise in temperature of up to around 0.5 eV in the outer ionosphere and intensive SAR arcs at about 600 earth radii.

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