Apposite of Atmospheric Electric Parameters with the Energy Coupling Function (ε) During Geomagnetic Storms at High Latitude
In this work we are concerned with the variation of the electric fields and air-earth currents due to the excessive power generated by the solar wind-magnetosphere dynamo, during geomagnetic storms recorded at Maitri, Antarctica in 2004. The difficulty encountered in this exercise is the percentage of variance observed in the GEC parameters varies with each storm event. A major part of the power generated by the solar wind-magnetosphere dynamo is used in the formation of the ring current, and the rest is utilized for joule heating and auroral particle injection. The method adopted by Frank et al. Was utilized to delineate the variation due to the signatures of tropical thunderstorm activity from the geoelectric data; while statistical methods used in our earlier studies were used to delimit diurnal variation due to the constant buffeting of solar wind. We find that the solar wind-magnetosphere energy coupling function (ε ) to be well correlated with the atmospheric electric parameters during the onset of geomagnetic disturbances.However the empirical relation breaks down during minor storms and sub-storm events.
C.P. Anilkumar C. Panneerselvam K.U.Nair R.Ramar K.Jeeva S.Gurubaran
Equatorial Geophysical Research Laboratory, Indian Institute of Geomagnetism, Krishnapuram, Tirunelv Equatorial Geophysical Research Laboratory, Indian Institute of Geomagnetism, Krishnapuram, Tirunelv
国际会议
第13届国际大气电学会议(The 13th International Conference on Atmospheric Electricity)
北京
英文
2007-08-13（万方平台首次上网日期，不代表论文的发表时间）