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系統識別號 U0026-1807201115322200
論文名稱(中文) 太陽風之電場與中磁緯度電離層全電子含量之相關性研究
論文名稱(英文) A Correlation Study on Solar Wind Electric Fields and Middle Magnetic Latitude Ionospheric Total Electron Content
校院名稱 成功大學
系所名稱(中) 太空天文與電漿科學研究所
系所名稱(英) Assistant, Institute of Space, Astrophysical and Plasma Sciences(ISAPS)
學年度 99
學期 2
出版年 100
研究生(中文) 陳汶炫
研究生(英文) Wen-Shiuan Chen
學號 la6981010
學位類別 碩士
語文別 英文
論文頁數 89頁
口試委員 指導教授-談永頤
口試委員-許志浤
口試委員-汪愷悌
中文關鍵字 太陽風之電場  電離層全電子含量 
英文關鍵字 Solar Wind Electric Field  Ionospheric Total Electron Content 
學科別分類
中文摘要 太陽風之場量例如星際磁場(IMF)和太陽風的速度會影響到電離層的電漿特性。本篇研究結合了WIND太空船所觀測到的太陽風之磁場,離子速度和離子密度以及福衛三號之掩星觀測儀所觀測的電離層電子密度。我們使用2008年八月至十月由此兩任務所測得之資料,檢視太陽風之電場與電離層的全電子含量(TEC)之可能的相關性。假設E∝Δ(-V×B)以及E∝-V×B,經由比較不同情況下之相關係數,我們檢視電離層的感應電場對中磁緯度全電子含量之影響。我們的研究結果顯示在E∝-V×B的假設下,會與電離層內由太陽風所造成的感應電場較有相關性。當南向星際磁場以及持續長時間的南向星際磁場,在中磁緯度午後電離層全電子含量與其有著更良好的相關性。
英文摘要 The conditions of the solar wind field quantities, such as the interplanetary magnetic field (IMF) and the solar wind velocity, may affect the plasma properties in the ionosphere. This study combines the observations of solar wind magnetic field, ion velocity and ion density by the WIND spacecraft and the observations of ionospheric electron density by the GPS Occulation Experiment (GOX) on the satellites of the FORMOSAT-3/COSMIC (FS3C) mission. We use the data from the two missions during the period August to October 2008 to examine the possible correlation between the solar wind electric field and the total electron content (TEC) in the ionosphere. By comparing the correlation coefficients at middle magnetic latitudes under different conditions, we examine the influence on the TEC by the induced electric field in the ionosphere under the assumptions of E∝Δ(-V×B) and E∝-V×B. The results of our studies suggest that the assumption of E∝-V×B may be more relevant to the form of the ionospheric electric field induced by the solar wind. Its association with the ionospheric TEC at middle magnetic latitudes and in the early afternoon is more correlated when the IMF is southward and remains southward for longer duration of time.
論文目次 摘要 I
ABSTRACT II
ACKNOWLEDGMENTS III
CONTENTS IV
LIST OF FIGURES VII
LIST OF TABLES XII
1 INTRODUCTION 1
1.1 Solar Wind 1
1.2 Ionosphere 3
1.3 Fountain effect 5
1.4 Solar Wind-Ionosphere coupling 8
1.5 Motivation and Objectives 10
1.6 Outline 11
2 INSTRUMENT AND OBSERVATION 12
2.1 GPS (Global Positioning System) 12
2.2 FORMOSAT-3 /COSMIC 13
2.3 Radio Occultation Technique 15
2.4 WIND spacecraft 24
3 DATA PROCESSING 27
3.1 Data Processing of WIND data 27
3.1.1 Introduction to WIND data 27
3.1.2 Filtering and interpolation of WIND data 27
3.1.3 Definitions of tnow, -V×B and Δ(-V×B) 29
3.2 Data Processing of FS3C data 31
3.2.1 Introduction to FS3C data 31
3.2.2 Filtering, calculating and grouping of FS3C data 31
3.3 Interpolation of WIND data and FS3C data 33
3.4 Definition of Correlation Coefficient 34
4 OBSERVATION AND DISCUSSION 38
4.1 Data Selection 38
4.2 Comparison of Correlation Coefficients 43
4.2.1 Comparison of all, positive and negative -V×B 43
4.2.2 Comparison of all, positive and negative Δ(-V×B) 48
4.2.3 Comparison of all, increased and decreased -V×B 51
4.2.4 Comparison of all, increased and decreased Δ(-V×B) 54
4.3 Comparison of Correlation Coefficients with Timing Consideration 57
4.3.1 Consideration of -V×B after a Positive Minimum 57
4.3.2 Comparison of Average -V×B 62
4.3.3 Comparison of Average Δ(-V×B) 65
4.3.4 Comparison of Average -V×B after a Negative value 68
4.4 Discussion 72
5 CONCLUSIONS 81
5.1 Concluding Remarks 81
5.2 Future Work 82
APPENDIX 83
REFERENCES 86
參考文獻 Appleton, E. V., Two anomalies in the ionosphere, Nature, 157, 691, 1946.
Cowley, S. W. H., Davies, J. A., Grocott, A., Khan, H., Lester, M., McWilliams, K. A., Milan, S. E., Provan, G., Sandholt, P. E., Wild, J. A., and Yeoman, T. K., Solar-wind-magnetosphere-ionosphere interactions in the Earth's plasma environment, Phil. Trans. R. Soc. Lond. A 2003 361, 113-126, 2002.
Davis, K., Ionospheric Radio, Peter Peregrinus Ltd, London, pp. 70-73, 1990.
Doherty, P. H., Klobuchar, J. A., and Kunches, J. M., Eye on the Ionosphere: The correlation between solar 10.7 cm radio flux and ionospheric range delay, GPS Solutions, 3, 75-79, 2000.
Hajj, G. A., and Romans, L. J., Ionospheric electron density profiles obtained with the Global Positioning System: Results from the GPS/MET experiment, Radio Sci., 33, 175-190, 1998.
Hernandez, M. K., Utilizing COSMIC radio occultation soundings to estimate convective potentials over oceans, http://library.ucar.edu/, 2007.
Juusola, L., Observations of the solar wind-magnetosphere-ionosphere coupling, Ph. D. thesis, University of Helsinki, Helsinki, Finland, 2009.
Kelley, M. C., Fejer, B. G., and Gonzales, C. A., An explanation for anomalous equatorial ionospheric electric fields associated with a northward turning of the interplanetary magnetic field, Geophysical Research Letters, 6, 301-304, 1979.
Kelley, M. C., and Heelis, R. A., The Earth’s Ionosphere, Academic Press, San Diego, USA, 105-107, 1989.
Kivelson, M. G., and Russell, C. T., Introduction to Space Physics, Cambridge University Press, New York, 1995.
Kursinski, E. R., Hajj, G. A., Leroy, S. S., and Herman, B., The GPS radio occultation technique, Terr. Atmos. Ocean. Sci. 11, 53-114, 2000.
Lin. C. H., Hsiao, C. C., Liu, J. Y., and Liu, C. H., Longitudinal structure of the equatorial ionosphere: Time evolution of the four-peaked EIA structure, Journal of Geophysical Research, 112, A12305, doi:10.1029/2007JA012455, 2007.
Lekshmi, D. V., Balan, N., Vaidyan, V. J., Alleyne, H., and Bailey, G. J., Response of the ionosphere to super geomagnetic storms: Observations and modeling, Advances in Space Research, 41, 548–555, 2008.
Lai, A. L., Determination of the Auroral Oval Region Based on FORMOSAT-3/COSMIC Tiny Ionospheric Photometer Data, M. S. thesis, National Cheng Kung University, Tainan, Taiwan, 2009.
Momani, M. A., Yatim, B., and Ali, M. A. M., Ionospheric and geomagnetic response to the total solar eclipse on 1 August 2008 over Northern Hemisphere, Journal of Geophysical Research, 115, A08321, 21, 2010.
Parks, G.K., Physics of Space Plasmas: An Introduction, Westview Press, Redwood City, 1995.
Ratcliffe, J.A., An introduction to the ionosphere and magnetosphere, Cambridge University Press, UK, 1972.
Ram, S. T., Su, S. Y., and Liu, C. H., FORMOSAT-3/COSMIC observations of seasonal and longitudinal variations of equatorial ionization anomaly and its interhemispheric asymmetry during the solar minimum period, Journal of Geophysical Research, 114, A06311, doi:10.1029/2008JA013880, 2009.
Wolf, R.A., Spiro, R.W., Sazykin, S., Toffoletto, F. R., How the Earth's inner magnetosphere works: An evolving picture, Journal of Atmospheric and Solar-Terrestrial Physics, 69, 288-302, 2007.
蔡龍治、蕭棟元、陳政儀、蔡偉雄、朱延祥、劉兆漢,福衛三號於全
電離層氣象觀測與研究, 物理雙月刊, 28(6), 896-909, 2006.
Reference Websites:
http://www.astrobio.net/
http://tacc.cwb.gov.tw
http://www.nspo.org.tw
http://spdf.gsfc.nasa.gov/
http://www.boqueteweather.com/links.htm
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