TY - JOUR

T1 - CONCERNING FLUX EROSION FROM THE DAYSIDE MAGNETOSPHERE

AU - TSYGANENKO, NA

AU - SIBECK, DG

PY - 1994/7/1

Y1 - 1994/7/1

N2 - The dayside magnetopause moves inward during periods of southward interplanetary magnetic field in response to decreases in the outer magnetospheric magnetic field strength. We consider possible causes for the magnetic field strength decreases and demonstrate that they are consistent with increases in the region 1 Birkeland and cross-tail currents. We reexamine the well-known series of magnetopause crossings by OGO 5 on March 27, 1968, to demonstrate that they provide evidence for two intervals of gradual inward magnetopause motion associated with magnetic flux erosion and also for two intervals of inward magnetopause motion associated with sharp increases in the solar wind dynamic pressure.

AB - The dayside magnetopause moves inward during periods of southward interplanetary magnetic field in response to decreases in the outer magnetospheric magnetic field strength. We consider possible causes for the magnetic field strength decreases and demonstrate that they are consistent with increases in the region 1 Birkeland and cross-tail currents. We reexamine the well-known series of magnetopause crossings by OGO 5 on March 27, 1968, to demonstrate that they provide evidence for two intervals of gradual inward magnetopause motion associated with magnetic flux erosion and also for two intervals of inward magnetopause motion associated with sharp increases in the solar wind dynamic pressure.

KW - INTERPLANETARY MAGNETIC-FIELD

KW - WIND DYNAMIC PRESSURE

KW - BIRKELAND CURRENTS

KW - GEOMAGNETIC-FIELD

KW - MAGNETOPAUSE SHAPE

KW - FIELD-ALIGNED CURRENTS

KW - CURRENT SYSTEM

KW - RING CURRENT

KW - MODELING

KW - MAGNETOSPHERE

U2 - 10.1029/94JA00719

DO - 10.1029/94JA00719

M3 - Article

VL - 99

SP - 13425

EP - 13436

JO - Journal of Geophysical Research: Biogeosciences

JF - Journal of Geophysical Research: Biogeosciences

SN - 0148-0227

IS - A7

ER -