Simulation Study of Energy Deposition in the Polar Ionospheres

Details Simulation Study of Energy Deposition in the Polar Ionospheres Simulation Study of Energy Deposition in the Polar Ionospheres

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh11a0361s&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SH11A-0361

Physics

2716 Energetic Particles: Precipitating, 2736 Magnetosphere/Ionosphere Interactions (2431), 2753 Numerical Modeling, 2784 Solar Wind/Magnetosphere Interactions

Scientific paper

Using the LFM magnetosphere simulation model, we study the deposition of energy in the polar ionospheres by resistive heating and by precipitation of energetic electrons. The energy deposition rate can exceed a terrawatt during intense geomagnetic disturbances. The energy can drive winds which affect lower latitudes. It can also cause the atmosphere to rise affecting satellite drag. The source of the energy is the sun. The energy is transmitted to the Earth in the solar wind plasma and the embedded Interplanetary Magnetic Field (IMF). We examine how the energy rate depends on the strength and orientation of the IMF and the dynamic pressure of the solar wind. Seasonal and solar cycle effects are also considered.

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