We have extended our previous semikinetic study of early stage plamasphere refilling with perpendicular ion heating (Lin et al., 1992) by removing the restriction that the northern and southern boundaries are identical and incorporating a generalized transport description for the electrons (e.g., Brown et al., 1991). This allows investigation of the effects of electron heating and a more realistic calculation of electric fields produced by ion and electron temperature anisotropies. The combination of perpendicular ion heating and parallel electron heating leads to an equatorial electrostatic potential peak, which tends to shield and decouple ion flows in the northern and southern hemispheres. Unequal ionospheric upflows in the northern and southern hemispheres lead to the development of distinctly asymmetric densities and other bulk parameters. At t=5 hour after the initiation of refilling with different source densities (Nnorth=100 cm-3, Nsouth=50 cm-3), the maximum potential drops of the northern and southern hemispheres are 0.6 and 1.3 V, respectively. At this time the minimum ion densities are 11 and 7 cm-3 for the northern and southern hemispheres. DE 1 observations of asymmetric density profiles by Olsen (1992) may be consistent with these predictions. Termination of particle heating causes the reduction of equatorial potential and allows interhemispheric coupling. When the inflows from the ionospheres are reduced (as may occur after sunset), decreases in plasma density near the ionospheric regions are observed while the heated trapped ion population at the equator persists. ¿ American Geophysical Union 1994