Loading dynamics of low-latitude coronal holes, solar filaments, and near-earth disturbances in July-December 1999

We consider the recurrent complex of interacting solar sources of near-Eart h disturbances that dominated in solar-terrestrial relationships in July-De cember 1999. We show the following: (i) one of the main effects of the inte raction in the complex was the "loading" of coronal holes with active-filam ent matter; and (ii) variations in the degree of loading essentially determ ine the density and velocity profiles of interplanetary plasma streams at t he Earth's orbit and the duration of recurrent geomagnetic disturbances.