Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsa51a1926b&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SA51A-1926
Physics
[2463] Ionosphere / Plasma Convection, [2475] Ionosphere / Polar Cap Ionosphere, [2740] Magnetospheric Physics / Magnetospheric Configuration And Dynamics
Scientific paper
The convection reversal boundary (CRB) is a curve on a map of high latitudes that divides anti-sunward polar cap convection flow from sunward return flow at lower latitudes. It has been used by some as a proxy for the open-closed field line boundary. The boundary can be estimated from the convection maps derived from the SuperDARN radar network observations. We have derived the statistics of the OCB from a large database of SuperDARN observations and have produced a model that predicts the OCB location at all local times even when it is observed over a small local-time sector. This paper presents the statistics of the OCB and the model. Then the model is used in a case study to examine the behavior of the total polar cap magnetic flux during a period of steady IMF, and how the conjugate hemispheres respond. Finally, the model is being used to organize velocity observations to more accurately characterize their spectra with the goal of producing a dynamic convection model.
Bristow William A.
Spaleta J.
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