Physics
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jgra..11409205m&link_type=abstract
Journal of Geophysical Research, Volume 114, Issue A9, CiteID A09205
Physics
8
Ionosphere: Wave Propagation (0689, 3285, 4275, 4455, 6934), Magnetospheric Physics: Magnetosphere: Outer, Ionosphere: Plasma Waves And Instabilities (2772), Magnetospheric Physics: Magnetic Storms And Substorms (7954), Magnetospheric Physics: Numerical Modeling
Scientific paper
Coordinated observations from GOES-9, DMSP F-13, and Chokurdakh (CHD) have shown concurrent Pc1-2 band wave activity in the late afternoon sector, close to 16 MLT. The left-hand polarization of the waves in space indicates that these are electromagnetic ion cyclotron (EMIC) waves. In the region of field line conjunction, DMSP also observed 6-30 keV energy ion precipitation. We have examined the propagation of the EMIC waves from the magnetosphere to the ionosphere using both time series analysis and a 2$\frac{1}{2-D magnetohydrodynamic model. Our analysis suggests that the EMIC are generated by interactions with cold plasma within a drainage plume, consistent with theory, and that the waves primarily propagate earthward along geomagnetic field lines at the eastward (outer) edge of the plume.
Ables Sean T.
Fraser Brian J.
Morley Steven K.
Sciffer Murray D.
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