MAGNETOSHEATH FLOW NEAR THE SUBSOLAR MAGNETOPAUSE - ZWAN-WOLF AND SOUTHWOOD-KIVELSON THEORIES RECONCILED

We reconcile the superficially contradictory theories of flow immediat ely upstream of the subsolar magnetopause. We show that the formation of a layer of enhanced field and depressed density immediately adjacen t to the magnetopause as predicted by Zwan and Wolf appears to require the presence upstream of a region of enhanced pressure and field rare faction as predicted by Southwood and Kivelson. We thus argue that the detached regions of enhanced density and the depletion layer adjacent to the magnetopause are actually manifestations of a single phenomeno n.