Physics
Scientific paper
Feb 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jgra..108.1095s&link_type=abstract
Journal of Geophysical Research (Space Physics), Volume 108, Issue A2, pp. SMP 16-1, CiteID 1095, DOI 10.1029/2002JA009675
Physics
8
Magnetospheric Physics: Solar Wind/Magnetosphere Interactions, Interplanetary Physics: Planetary Bow Shocks, Magnetospheric Physics: Magnetopause, Cusp, And Boundary Layers, Ionosphere: Ionosphere/Magnetosphere Interactions (2736)
Scientific paper
We reexamine traveling convection vortices (TCVs) seen by the Magnetometer Array for Cusp and Cleft Studies on 9 November 1993. IMP-8 energetic ion observations confirm that the solar wind pressure variations previously associated with these TCVs were generated by kinetic processes within the Earth's foreshock. As expected during this interval of spiral IMF orientation, fast mode waves launched by the pressure variations first arrived in the equatorial ionosphere near dusk and propagated dawnward. We derive a model for the field-aligned currents generated by transient compressions of the magnetopause and show that it accounts for the number of TCVs seen in the prenoon ionosphere, their sense of rotation, the latitude at which they occur, and their absence in the postnoon ionosphere.
Decker Robert B.
Sibeck David G.
Singer Howard J.
Szabo Andras
Tachihara H.
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