Abstract The vertical E×B drift is very important parameter as its day to day variability has great influence on the variability in the low latitude F-region ion and electron density distributions. The measurements of vertical ion velocity from the first Republic of China Satellite (ROCSAT-1) provide a unique data base for the development of possible relationship between vertical E×B drifts and ground based magnetometer observation. An attempt has been made to derive quantitative relationship between F-region vertical E×B drifts measured by ROCSAT-1 (600km) and ground measured equatorial electrojet for the solar maximum period 2001–2003 for Indian and Japanese sectors. The results consistently indicate existence of linear relationship between the measured vertical E×B drifts at topside F-region and EEJ for both the sectors, with a moderate to high correlation coefficients. The linear relationship between ROCSAT-1 measured E×B drifts and EEJ for Indian and Japanese sectors has been compared with a similar relationship with Jicamarca Unattended Long-term Ionosphere Atmosphere Radar (JULIA) measured E×B drifts (150km echos) and EEJ strength from Peruvian sector during 2003. It has been found that ROCSAT-1 measured E×B drifts shows linear relationship with EEJ, however, exhibits a larger scatter unlike JULIA radar observed E×B drifts. This may be attributed to the large height difference as ROCSAT-1 measures E×B drifts at 600km altitude and the EEJ is E-region (110km) phenomenon.


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    Title :

    Possible relationship between the equatorial electrojet (EEJ) and daytime vertical E×B drift velocities in F region from ROCSAT observations


    Contributors:
    Kumar, Sandeep (author) / Veenadhari, B. (author) / Tulasi Ram, S. (author) / Su, S.-Y. (author) / Kikuchi, T. (author)

    Published in:

    Advances in Space Research ; 58 , 7 ; 1168-1176


    Publication date :

    2016-06-05


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English