博碩士論文 92623003 詳細資訊


姓名 葉峻佑(Chun-Yu Yeh)  查詢紙本館藏   畢業系所 太空科學研究所
論文名稱 利用華衛一號來研究磁暴效應對磁赤道地區電場之影響
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摘要(中) 摘要 藉由Huang et al. [2005] 用TIEGCM模擬中、低緯度電離層風場與電場受地磁活動的影響的分析,發現磁暴發生時,由於極區受到能量侵入而產生加熱作用所產生的擾動風場會產生赤道向的電流,會在低緯度地區夜間累積電荷,電位最大發生的時間點會在午夜左右。因此在午夜之後可以發現東向擾動電場,並且可以發現極向擾動電場的產生在夜間。在磁暴結束之後,從模擬結果中得知子午向擾動電場會存在幾天的時間,相反的東西向電場會快速的消散並且恢復到安靜期的狀態。 在本篇論文是利用華衛一號所觀測到垂直於磁力線的子午向離子速度(V2m)與東西向離子速度(V2z),來研究磁暴發生時與磁暴結束之後磁赤道地區電離層電場變化。另外我們比對模式模擬結果與觀測資料看是否有一致的現象,來研究磁暴對磁赤道地區電離層電場的影響。
摘要(英) Abstract Model results of Huang et al. [2005], using the Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIEGCM) to investigate the influence of geomagnetic activity on middle- and low-latitude thermospheric winds and ionospheric electric fields, indicate that that the equatorward current, produced by the disturbance winds, develops positive charge accumulation at low latitudes and maximizes in the premidnight sector. We may find the eastward perturbation electric field in the post-midnight sector and existence of poleward perturbation electric field at night time. After geomagnetic activity ceases, model results show that the meridional perturbation electric fields can last for many days in the post-recovery period, while the zonal perturbation electric fields decay more rapidly. In this thesis, two velocity components orthogonal to the geomagnetic field line, i.e., meridional component (V2m) and zonal component (V2z) are used to study the variations of equatorial iobospheric electric fields during and after the storm time. In addition, comparisons between model results and observational data have also been made.
關鍵字(中) ★ 磁爆
★ 華衛
★ 中華衛星一號
關鍵字(英)
論文目次 第一章:序論……………………………………………………………..1
第二章:儀器簡介與電離層簡介………………………………………..4
2-1 儀器簡介……………………………………………………….4
2-1-1 中華衛星一號簡介………………………………………….4
2-1-2 電離層電漿電動效應儀………………………………….7
2-2 電離層簡介…………………………………………………...11
2-2-1 電離層起源……………………………………………...11
2-2-2 電離層分層……………………………………………...13
第三章:赤道地區電離層電場與資料處理……………………………15
3-1 赤道地區電離層電場………………………………………...15
3-2 資料的選取與處理…………………………………………...18
第四章:結果與分析……………………………………………………23
4-1 磁暴發生期間赤道地區電場變化…………………………...23
4-2 磁暴結束後赤道地區電場變化……………………………...27
第五章:結論與未來展望………………………………………………32
5-1 結論…………………………………………………………...32
5-2 未來展望……………………………………………………...33
參考文獻………………………………………………………………..34
參考文獻 參考文獻 Blanc, M. and A. D. Richmond, The ionospheric disturbance dynamo, J. Geophys.Res., Vol.85, 1669, 1980. Fuller-Rowell, T. J., G. H. Millward, A. D. Richmond, and M. V. Codrescu, Storm-time changes in the upper atmosphere at low latitudes, J. Atmos. Solar-Terr.Phys., Vol.64, 1383-1391, 2002. Heelis , R. A. , and J. K. F. Lowell , A Model of the High-LatitudeIonospheric Convection Pattern , J. Geophys. Res. , Vol.87,6339-6345, 1982. Huang, C. M., A. D. Richmond, and M. Q. Chen, Theoretical effects of geomagnetic activity on low-latitude ionospheric electric fields, J. Geophys. Res. , Vol. 110, 2005. Istomin,V.G., Observational results on atmospheric ions in the region of the outer ionosphere. Ann, Geophys, 22,255,1966 Kelley, M. C., The Earth’s Ionosphere: Plasma Physics and Electrodynamics, International Geophysical Series, Academic Press, New York, 1989. Kobea, A. T., A. D. Richmond, B. A. Emery, C. Peymirat, H. Luhr, T. Moretto, M. Hairston, and C. Amory-Mazaudier, Electrodynamic coupling of high and low latitudes: Observations on May 27, 1993, J. Geophys. Res., Vol.105, No.A10, 22979-22989, 2000. Richmond, A. D., E. C. Ridley, and R. G. Roble, A thermosphere-Ionosphere general circulation model with coupled electrodynamics, Geophysical Research Letters, Vol.19,No.6, 601-604, 1992. Richmond, A. D., C. Peymirat, and R. G. Roble, Long-lasting disturbances in theequatorial ionospheric electric field simulated
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with a coupledmagnetosphere-ionosphere-thermosphere model, J. Geophys. Res., Vol.108, 1118, 2003. Tascione , F. T. , Introduction to the Pace Environment , Krieger Publication Company , Malabar , Florida ,1944 Wenbin wang ,A thermosphere-ionosphere nested grid(TING) model, A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in The University of Michigan , 1998. 穆昶誠,利用TIEGCM 對電離層擾動發電效應的模擬研究,碩士論文,國立中央大學太空科學研究所,2003。 江峻毅,中華衛星一號觀測電離層較大的電漿氣泡在季節及經度之統計與研究,碩士論文,國立中央大學太空科學研究所,2004。 許慶涵,用華衛一號觀測資料研究離子沿磁場飄移速度之變化與成因,碩士論文,國立中央大學太空科學研究所,2004。
指導教授 黃健民(Chien-Ming Huang) 審核日期 2005-7-22

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