Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3823104j&link_type=abstract
Geophysical Research Letters, Volume 38, Issue 23, CiteID L23104
Physics
Ionosphere: Ionosphere/Magnetosphere Interactions (2736), Ionosphere: Particle Precipitation, Ionosphere: Polar Cap Ionosphere, Ionosphere: Instruments And Techniques, Magnetospheric Physics: Energetic Particles: Precipitating
Scientific paper
Using ionospheric total electron content (TEC) measured by Global Positioning System (GPS) receivers of the Canadian High Arctic Ionospheric Network (CHAIN) we provide clear evidence for a systematic and propagating temporary TEC enhancement produced by compression of the magnetosphere due to a sudden increase in solar wind dynamic pressure. The magnetospheric compression is evident in THEMIS/GOES satellite data. Application of a GPS triangulation technique revealed that the TEC changes propagated with a speed of 3-6 km/s in the antisunward direction near noon and ˜8 km/s in the sunward direction in the pre-noon lower latitude sector. Characteristics of these TEC changes along with riometer absorption measurements seems to indicate that the TEC change is due to electron density enhancement in the F region and is possibly due to particle precipitation associated with sudden magnetospheric compression.
Chadwick Richard
Danskin Donald W.
Jayachandran P. T.
Jonathan Rae I.
Kelly T. D.
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