A quantitative model of the magnetosphere with poloidal vector ®elds
نویسنده
چکیده
A quantitative model of the magnetospheric magnetic ®eld is developed using poloidal vector ®elds. This formalism is applied to the ring current region, the distant ®eld and the return currents. The tail model is similar to the unwarped model of Tsyganenko. Several sets of coecients are obtained for dierent Kp through a ®t of the NSSDC data base. Experimental DB contours and theoretical distributed currents contours are correctly described and are Kp-dependent. Field line topology problems and poor ring current description observed in models of similar complexity are avoided. Computer time has been kept reasonable and makes this model particularly adapted to intensive-type calculations.
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