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    • 03) Bitlis Eren Üniversitesi Fen Bilimleri Dergisi
    • Cilt 05, Sayı 2 (2016)
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    • 03) Bitlis Eren Üniversitesi Fen Bilimleri Dergisi
    • Cilt 05, Sayı 2 (2016)
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    The Behavior of the Classical Diffusion Tensor for Equatorial Ionospheric Plasma

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    Date
    2016
    Author
    YEŞİL, Ali
    SAĞIR, Selçuk
    KURT, Kadri
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    Abstract
    In this study, the relationship between the classical diffusion tensor’s coefficients (D0, D1 and D2for steady-state case) and the equatorial anomaly is investigated by taking the geometry of Earth’s magnetic field as B=B0z for both solstices of ionospheric plasma. The effective heights used here is made for the altitudes (280,300,340,390 and 410 km) where the observations are predominantly referenced to the equatorial anomaly. It is seen that the classical diffusion coefficients calculated value at 12.00 LT is greater than 24.00 LT in both solstice seasons. This means that no anomaly is observed in the classical diffusion coefficient for the electron density at night. All values of diffusion coefficients (D0, >D1 >D2) are higher at 12:00 LT than the values at 24:00 LT for both solstices. This means that the classical diffusion coefficient relates with the night anomaly which is observed with the electron density. Seasonal (winter) anomaly in the equatorial region (-100S, -150N) corresponds to 390 and 410 km for D0, 280, 300 and 340 km for D1 and similar condition to the seasonal anomaly for all altitudes for D2 (the measured values at December 21 are higher than the measured values at June 21) at 12:00 LT. D0 and D2 values show seasonal anomaly for all altitudes while D1 does not show any values for any altitudes at 24:00 LT.
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    http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/14113
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