Equatorial electric field response during stormtimes using CINDI and DMSP data

Details Equatorial electric field response during stormtimes using CINDI and DMSP data Equatorial electric field response during stormtimes using CINDI and DMSP data

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa51b1626h&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SA51B-1626

Physics

[2411] Ionosphere / Electric Fields, [2415] Ionosphere / Equatorial Ionosphere, [2437] Ionosphere / Ionospheric Dynamics, [2443] Ionosphere / Midlatitude Ionosphere

Scientific paper

During times of large geomagnetic storms, the penetration field from the magnetosphere can extend into the mid-latitude region and affect the equatorial electric field in the ionosphere. Under these conditions the equatorial east-west field becomes more strongly eastward on the dayside and more strongly westward on the nightside. Despite the extremely quiet solar minimum, there have been seven storms during the lifetime of the C/NOFS spacecraft (summer 2008 to the present) where the Dst index goes below -50 nT. Five of these seven storms occurred during 2010. We examine several of these storm cases using the CINDI plasma instruments on-board the C/NOFS spacecraft to determine the response of the equatorial ionosphere to these storms. Specifically we trace the evolution of the storm from the solar wind data, through the response in the polar cap as observed by the DMSP spacecraft, and finally to the equatorial ionosphere response observed by CINDI to determine the character, strength, and time lag of the equatorial electric field response.

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