Physics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm32a10a&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SM32A-10
Physics
2736 Magnetosphere/Ionosphere Interactions, 2740 Magnetospheric Configuration And Dynamics, 2760 Plasma Convection, 2784 Solar Wind/Magnetosphere Interactions
Scientific paper
Global observations of high latitude ionospheric flow patterns have shown that time scales of reconfiguration for ionospheric convection are as short as five to ten minutes. In this study, we examine the associated flows and reconfiguration time scales in the equatorial magnetosphere. Time intervals were identified when the CRRES satellite was in a position to measure flows in the equatorial, dayside magnetosphere and when the IMP 8 satellite was situated in the solar wind to observe changes in the IMF. For these selected time intervals we used data from ground magnetometers at high latitudes, allowing us to compare reconfiguration times of the flows in the equatorial magnetosphere and the high latitude ionosphere. Several events show similar changes in convection in both regions. The time scales for reconfiguration in the equatorial magnetosphere and the high latitude ionosphere are similar. The implications of a system-wide time scale of reconfiguration for ionospheric convection are significant, adding to the growth of evidence which links the magnetosphere and the ionosphere as a cooperatively dependent and dynamic system.
Alves S. R.
Hughes Jeffrey W.
Murr David Lee
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