Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm51d..10b&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #SM51D-10
Physics
2712 Electric Fields (2411), 2730 Magnetosphere: Inner, 2760 Plasma Convection, 2778 Ring Current, 2788 Storms And Substorms
Scientific paper
The Volland-Stern electric potential model is one of the most widely used model for stormtime convection simulations. The Volland-Stern potentials are given by Φ = ALγ sin(φ ) where A is a function that depends on Kp and γ is the shielding factor. The shielding factor is kept constant and the most common value assigned to γ is 2. According to a recent study by Boonsiriseth et al. [2001], the Volland-Stern model greatly under-estimates convection at low L during the main phase of geomagnetic storms. It also fails to mimic the high time resolution variations in convection. In this study, we will attempt to improve the Volland-Stern Model by varying the γ factor according to a formulated relationship to IMF B\( z \). The study shows that by varying γ , the convection patterns changes drastically throughout the different phases of the storm. This initial study simulates the MACEP patterns for the Jan. 10, 1997 storm [Boonsiriseth et al., 2001].
Boonsiriseth A.
Mansergh Thorne Richard
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