Two point observation of high‐latitude reconnection

Abstract
Reconnection on the high‐latitude magnetopause can produce sunward plasma flow in a portion of the lobes. This plasma should precipitate into the polar cap, poleward of the locations where magnetosheath plasma is normally found. We present two point INTERBALL observations of reconnection which is qualitatively consistent with the antiparallel merging model. Reconnection creates a plasma layer about 1RE thick adjacent to the magnetopause (MP). Timing considerations suggest tailward motion of the reconnection site with a velocity ∼20 km/s and a reconnection site with dimensions on the order of 1 RE.