DOI: 10.1029/2004jd005469
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Abstract: [1] Interyear consistency is demonstrated in the bi-monthly average diurnal vertical electric field measured over $720 ''fair-weather'' days collected during a 5-year interval (1998 to 2002) at Vostok (78.5°S, 107°E; magnetic latitude 83.6°S), Antarctica. After correcting for the influence of polar-cap convection, seasonal peaks in the average electric field values occur around July-August with a diurnal maximum at $ 2050 UT while lowest average magnitudes are measured near November-December when the associa…

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