Physics – Plasma Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm31b2112w&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SM31B-2112
Physics
Plasma Physics
[2772] Magnetospheric Physics / Plasma Waves And Instabilities, [2774] Magnetospheric Physics / Radiation Belts, [7867] Space Plasma Physics / Wave/Particle Interactions, [7999] Space Weather / General Or Miscellaneous
Scientific paper
Compression of the magnetosphere by high speed solar streams has been shown to relate to the generation of electromagnetic ion-cyclotron (EMIC) waves by increasing the temperature anisotropy. In this study, data are presented from more than twenty ground-based induction magnetometers, with L values from L = 4.5 to L = 16 in both the northern and southern hemispheres. After a stream interaction region is detected by the WIND spacecraft on 14 April 2010, EMIC waves are detected on the ground surrounding local magnetic noon time for up to five days after the initial pulse. Polarization angles of the waves on the ground are examined to try to identify the injection region of these waves into the ionosphere. In addition, phase space density at geosynchronous orbit is analyzed to determine to what effect, if any, these waves have on radiation belt particles.
Engebretson Mark J.
Farrugia Charles J.
Gannon J. L.
Lessard Marc
Pilipenko Viacheslav
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