南半球極光區的觀測相對於北半球的少，是因為南半球沒有那麼多地面觀測站，在這個前提下我們利用統計的方式來呈現南北半球極光區的關聯。本文根據福衛三號所得到掩星觀測儀的資料再加以計算得到總電子密度含量。另一方面，利用掩星觀測儀資料所對應的極光電噴流參數，藉由總電子密度含量與此參數作累積機率的方式來探討全球地磁緯度與地磁時間下，所計算出的總電子密度含量的機率圖形，將資料分為季節性以及全年性加以討論，發現資料在季節的區分下與三年總資料下的分析結果具有相同的結論。南北半球在低緯度地區電子密度總和與極光電噴流參數普遍不相關，高緯度地區則隨著極光電噴流參數愈大，南北半球資料在極光區裡的電子密度總和愈大。此外本文利用所定義的符合度探討南北半球極光區裡的相關性，發現南北半球在極光區裡相關性較非極光區高並且當極光電噴流參數較高時，南北半球高緯度極光區電子密度總和的相關性也較高。本論文所討論之南北半球之間的總電子密度含量關聯性將對於了解南北半球之間關聯性的研究有所幫助。

Observations of the aurora zone in the southern hemisphere are fewer compared with the northern hemisphere, because there are not many ground stations in the south hemisphere. We use statistical methods to study the relation between the aurora zones in the northern and southern hemispheres. Based on GOX data from FORMOSAT-3, we calculate the total electron content (TEC) at various locations in the ionosphere. We also find the AE index corresponding to the GOX data. The relations between TEC and AE are discussed. Cumulative probabilities associated with TEC and AE index are found for various magnetic local time (MLT) and magnetic latitudes (MLAT). The relation between the TEC in the southern and northern hemispheres is analyzed and discussed based on 3-years' data, with and without separating them under seasonal consideration. We arrive at similar conditions for the two kinds of data. In the southern and northern hemispheres, TEC and AE index are unrelated at low MLAT, but highly related at high MLAT when AE index increases . Generally, TEC in the auroral region is larger than other MLAT ranges. Based on various conditions regarding the connection between TEC in the two hemispheres, we find good correlation for the auroral region MLAT as the AE index is high. Finally, the discussion on TEC-AE relation in this study may improve the understanding of the connection between the northern and southern hemispheres.

Akasofu, S.-I., S. Chapman, and C.-I. Meng, The polar electrojet,
J. Atmos. Terr. Phys., 27, 1275-1305, 1965.

Ballatore, P., C. G. Maclennan, M. J. Engebretson, M. Candidi, J.
Bitterly, C.-I. Meng, and G. Burns, A new southern high-latitude index, EGS, 1998.

DeWitt, R.N.,The occurrence of aurora in geomagnetically conjugate
areas, J. Geophys. Res., 64, 1347, 1962.

Donovan, E., S. Mende, B. Jackel, H. Frey, M. Syrjäsuo,
I. Voronkov, T. Trondsen, L. Peticolas, V. Angelopoulos,
S. Harris, M. Greffen, M. Connors, The THEMIS all-sky imaging array—system design and initial results from the prototype imager, J. Atmos. Solar-Terr. Phys., 68, 1472-1487, 2006.

Kauristie, K., N. Partamies, S. Mäkinen, R. Kuula, and A. Strømme,
Energy flux of electron precipitation as monitored by an all-sky camera, in Proceedings of the Eighth International Conference on Substorms(ICS-8), edited by Syrjäsuo and Donovan, University of Calgary, Alberta, Canada, pp. 123-126, 2007.
Maclennan, C. G., L. J. Lanzerotti, S.-I. Akasofu, A. N. Zaitsev, and
P. J. Wilkinson, Comparison of 'Electrojet' indices from the Northern and Southern Hemispheres, J. Geophys. Res., 96, 267-274, 1991.
Meng C.-I., and K. Liou, Substorm timeings and Timescales:
A new aspect, Space Sci. Rev., 113, 41, 2004.

Rostoker, G., and T. D. Phan,Variation of auroral electrojet spatial as a
function of the level of magnetospheric activity, J. Geophys. Res.,
91, 1716-1722, 1986.
Schreiner, W. S., S. V. Sokolovskiy, C. Rocken, and D. C. Hunt, Analysis and validation of GPS/MET radio occultation data in the ionosphere, Radio Sci., 34(4), 949-966, 1999.

Wescott, E., Magnetic activity during periods of auroras at
geomagnetically conjugate points, J. Geophys. Res., 67, 1353, 1962
Xu, W., and G. Chen, Quantitative analysis of the relationship between
polar ionospheric currents and auroral electrojet indices, Science 48(3), 376-383, 2005.