Low-to-Middle Latitude Plasma Transport During Geomagnetic Storms Observed From Ground and Space-Borne GPS Receivers

Details Low-to-Middle Latitude Plasma Transport During Geomagnetic Storms Observed From Ground and Space-Borne GPS Receivers Low-to-Middle Latitude Plasma Transport During Geomagnetic Storms Observed From Ground and Space-Borne GPS Receivers

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa31b..06m&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SA31B-06

Physics

2411 Electric Fields (2712), 2431 Ionosphere/Magnetosphere Interactions (2736), 2435 Ionospheric Disturbances

Scientific paper

Electric fields imposed on the ionosphere during geomagnetic storms have a significant impact on plasma transport. We use total electron content measurements from ground and space-based GPS receivers to infer how low latitude plasma is transported during periods of intense geomagnetic disturbance. Recent studies have identified vertical plasma transport due to zonal electric fields at the magnetic equator as an important contributor to dramatic changes in low and mid-latitude ionospheric structure. We will present results from a few events (October 2003, November 2003 and April 2002) and study the time series of TEC measurements obtained from ground-based GPS receiver networks covering a wide range of local times to infer plasma transport characteristics, focusing on how daytime plasma at low latitudes becomes transported to middle latitudes. We will use observations of TEC from space-borne GPS receivers to study vertical distribution of the plasma associated with TEC increases and decreases observed from the ground. The correlation between TEC and upstream solar-wind conditions is part of the analysis.

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