The authors study a new diffusion mechanism which is observed when ele
ctrostatic fluctuations and toroidal drift are taken into account simu
ltaneously. The diffusion is caused by transitions of particles from t
rajectories localized in the convective cells of electromagnetic fluct
uations to trajectories aligned in the direction of toroidal drift. Th
e spatial transport coefficient is found to be comparable to or higher
than neoclassical diffusion in the plateau regime, regardless of the
collision frequency, and is only weakly dependent on the parameters of
the fluctuation spectrum for upsilon greater-than-or-equal-to u(d).