博碩士論文 85247003 詳細資訊




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姓名 馮志龍( C-L Fern)  查詢紙本館藏   畢業系所 太空科學研究所
論文名稱 赤道區電離E 層純雙流體電漿波之模擬研究
(Simulations of Pure Two-Stream Waves in the Equatorial E-region Ionosphere)
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摘要(中) 經由一系列赤道區電離E層純雙流體電漿波發展的模擬分析結果,我們可驗證一些已知理論與現象,例如﹔純雙流體電漿波初始發展符合線性頻散關係; 共振耦合現象的展現; 回波功率隨天頂角變化滿足0.3(dB/度)的分佈以及二維電漿波的非線性發展導致垂直結構產生形變而構成垂直模態分量,最後造成主要電漿波偏離電噴流漂移(E×B )方向發展。然而,更重要的是這些垂直模態的發展具有非對稱結構。由我們的模擬結果發現電漿波尺度大小會影響非對稱的發展,即大尺度模態(波長尺度大於3m)朝k‧E<0 方向傳播發展,而小尺度模態(包括3m電漿波)則朝 k‧E>0 的方向傳播發展,其中3m電漿波符合VHF雷達非對稱觀測結果。我們認為非對稱結構發展主要導因於赤道電噴流的強大垂直背景極化電場E 。同時,由於強大固定的垂直背景極化電場E 影響,我們發現雙流體電漿波頻率僅與該水平模態Kx有關,以至於電漿波傾斜傳播(Kz≠0 )的相速低於線性理論之預測值,尤其在大尺度電漿波最明顯。
摘要(英) From the series of simulation results for two-stream waves in the equatorial E-region ionosphere, we have studied the dispersion relations, the resonant coupling, and the echo power variation with the zenith angle rate of approximately 0.3(dB/degree). We have also studied the vertical small-scale waves developed from the distortions of the dominant waves. The vertical waves will cause dominant waves to turn away from the electrojet drift direction (E×B ). The important point about the development of vertical modes is asymmetry. We find that the spectral asymmetry depends on the scale size of plasma waves, that is, the large-scale waves (above 3 meters) propagate in the k‧E<0 region, and the small-scale (smaller than 3 meters) propagate in the k‧E>0 region. The simulation result of up-down asymmetry for 3-meter wave is consistent with the radar observations. We believe that the background polarization electric field E driving the electrojet is responsible for the spectral asymmetries. In the same time, owning to the strong and fixed background polarization electric field E , the wave frequency depends only on horizontal wave number Kx . Therefore, the phase velocities of many obliquely propagating two-stream waves (Kz≠0 ) are below the value predicted by linear theory, and this characteristic is prominent especially for large-scale waves.
關鍵字(中) ★ 電離E層
★ 雙流體電漿波
★ 非對稱頻譜
★ 耦合共振
★ 赤道電噴流
關鍵字(英) ★ E-region
★ Two-stream waves
★ Spectral asymmetries
★ Resonant coupling
★ Equatorial electrojet
論文目次 封面
目次
圖目錄
表目錄
第一章 緒論
第二章 數值模型之建立
2-1 基本理論
2-2 數值模擬方法
2-3 模擬資料分析
2-4 數值模型的測試
2-5 數值模型之比較
第三章 模擬結果
3-1 單一電漿波的激發
3-2 多重電漿波的激發
3-3 電漿流場分佈
3-4 隨天頂角變化的二維回波功率模擬
3-5 更小尺度的電漿波激發
第四章 電漿波的交互作用
4-1 一維共振模擬
4-2 二維共振模擬
4-3 垂直共振模態的探討
第五章 討論與結論
5-1 討論
5-2 結論與未來展望
附錄一
附錄二
參考文獻
參考文獻 Balsley, B. B., Some characteristics of non-two-stream irregularities in the equatorial electrojet, J. Geophys. Res., 74, 2333,1969.
Balsley, B. B., A longitudinal variation of electron drift velocity in the equatorial electrojet, J. Geophys. Res., 75, 4369, 1970.
Balsley, B. B., and D. T. Farley, Radar studies of the equatorial electrojet at three frequencies, J. Geophys. Res., 76, 8341, 1971.
Balsley, B. B., D. A. Carter, and R. F. Woodman, Vertical ionization drifts in the lower equatroial ionosphere and the meridional current systems, J. Geophys. Res.,81, 1296, 1976.
Balsley, B. B. and D. T. Fairly, Radar observations of two-dimensional in the equatorial electrojet, J. Geophys. Res., 78, 7174-7179, 1973.
Baker, W. G., and D. F. Martyn, Electric currents in the ionosphere, 1, The conductivity, Phil. Trans. Roy. Soc. London, A. 246, 281-294, 1953.
Boris, J. P., and D. L. Book, Flux-corrected transport, 1, SHASTA, A fluid transport algorithm that works, J. Comput. Phys., 11, 38-69, 1973.
Bowles, K.L., Doppler-shifted radio echoes from aurora, J. Geophys. Res., 59, 553, 1954.
Bowles, K.L, R. Cohen, G. R. Ochs, and B. B. Balsley, Radar echoes from field- aligned ionization above the magnetic equator and their resemblence to auroral echoes, J. Geophys. Res., 65, 1853, 1960.
Bowles, K.L., B. B. Balsley, and Robert Cohen, Field-aligned E-region irregularities identified with acoustic plasma waves, J. Geophys. Res., 68, 2485, 1963.
Buneman, O., Excitation of field aligned sound waves by electron streams, Phys. Rev. Lett., 10, 285, 1963.
Chou, S. Y., and F. S. Kuo, A numerical study of the wind field effect on the growth and observability of equatorial spread F, J. Geophys. Res., 101,A8, 17137, 1996.
Cohen, R. and K. L. Bowles, Secondary irregularities in the equatorial electrojet, J. Geophys. Res., 72, 885, 1967.
Dupree, T. H., A perturbation theory for strong plasma turbulence, Phys. Fuids,9, 1773, 1966.
Dougherty, J. P., and D. T. Fairly, Ionosperic E region irregularities produced by nonlinear coupling of unstable plasma waves, J. Geophys, Res., 72, 895, 1967.
Farley, D. T., A plasma instability resulting in field-aligned irregularites in the ionosphere, J. Geophys. Res., 68, 6083, 1963.
Farley, D. T. and B. B. Balsley, Instabilities in the equatorial electrojet, J. Geophys. Res., 78, 227, 1973.
Fairly, D. T. and B. G. Fejer, The effect of the gradient drift term on type 1 electrojet irregularities, J. Geophys. Res., 80, No.22, 1975.
Farley, D. T., B. G. Fejer, and B. B. Balsley, Radar observations of two-dimensional turbulence in the equatorial electrojet, 3, Nighttime observations of type 1 waves, J. Geophys. Res.,83, 5625, 1978.
Farley, D. T., H. M. Ierkic, and B. G. Fejer, Radar interferometry: A new technique for studying plasma turbulence in the ionosphere, J. Geophys. Res.,86, 1467, 1981.
Farley, D. T., Theory of equatorial electrojet plasma waves: New developments and current status, J. Atmos. Terr. Phys., 47, 729, 1985.
Fejer, J. A., Semidiurnal currents and electron drifts in the ionosphere, J. Atmospheric Terrest. Phys., 4, 184-203, 1953.
Fejer, J. A., D. T. Farley, B. B. Balsley, and R. F. Woodman, Oblique VHF Radar spectral studies of the equatorial electrojet, J. Geophys. Res., 80, 1307, 1975a.
Fejer, J. A., D. T. Farley, B. B. Balsley, and R. F. Woodman, Vertical structure of the VHF backscattering region in the equatorial electrojet and the gradient drift instability, J. Geophys. Res., 80, 1313, 1975b.
Fejer, B. G., D. T. Fairly, B. B. Balsley, and R. F. Woodman, Radar observations of two-dimensional turbulence in the equatorial electrojet, 2, J. Geophys. Res., 81, 130-134, 1976.
Ferch, R. L., and R. N. Sudan, Numerical simulations of type Ⅱgradient drift irregularities in the equatorial electrojet, J. Geophys. Res., 82, 2283-2288, 1977.
Fern C. L., S.Y. Chou and F.S. Kuo, Simulations of spectral asmmetries of pure two-stream waves in the equatorial electrojet, Chin. J. Phys., 39, 141, 2001.
Haldoupis C., D. T. Farley and K. Schlegel, Type-1 echoes from the mid-latitude E-Region ionosphere, Ann. Geophys. ,15 , 1997.
Hanuise, C. and M. Crochet, Multifrequency HF radar studies of plasma instabilities in Africa, J. Atmos. Terr. Phys. 39, 1097, 1977.
Hanuise, C. and M. Crochet, Oblique HF radar studies of plasma instabilities in the equatorial electrojet in Africa, J. Atmos. Terr. Phys. 40, 49, 1978.
Hanuise, C., and M. Crochet, and P. Broche, HF radar studies of two-stream instability during an equatorial counter electrojet, J. Geophys. Res., 84, 5223, 1979.
Hanuise. C., and M. Crochet, 5- to 50-m wavelength plasma instabilities in the equatorial electrojet, 1, Cross-Field Conditions, J. Geophys. Res., 86, 3561, 1981a.
Hanuise. C., and M. Crochet, 5- to 50-m wavelength plasma instabilities in the equatorial electrojet, 2, Two-stream conditions, J. Geophys. Res., 86, 3567, 1981b.
Hirono, M., A theory of diurnal magnetic variations in the equatorial regions and conductivity of the ionosphere E region, J. Geomagnet. Geoelec., Kyoto, 4, 7-21, 1952.
Ierkic H. M., B. G. Fejer, and D. T. Farley, The Dependence on zenth angle of the strength of 3-meter equatorial electrojet irregularities, Geophys. Res. Lett.,7, No. 7, ,495, 1980.
Iranpour, K. et al., Propagation and dispersion of electrostatic waves in the ionospheric E region, Ann. Geophysicae 15, 878-889, 1997.
Janhunen, P.,Three-dimensional stabilization mechanism for the auroral Fairly-Buneman instabilities, J. Atmos. Terr. Phys.,54,1633-1648.
Janhunen, P., Perpendicular particle simulation of the E region Fairly-Buneman instability, J. Geophys. Res., 99, 11451, 1994.
Kaw, P. K., Wave propagation effects on observation of irregularities in the equatorial electrojet, J. Geophys. Res., 77, 1323, 1972.
Kelley, M. C., The earth's Ionosphere: Plasma Physics and Electrodynamic, Press, New York,487pp, 1989.
Keskinen, M. J. , R. N. Sudan, and R. L. Ferch, Temporal and spatial power spectrum studies of numerical simulations of type Ⅱ gradient drift irregularities in the equatorial electrojet, J. Geophys. Res., 84, 1419-1430, 1979.
Kudeki, E., D. T. Fairly, and B. G. Fejer, Long wavelength irregularites in the equatorial electrojet, Geophys. Res. Lett., 9, 684, 1982.
Kudeki, E., D. T. Fairly, and B. G. Fejer, Theory of spectral asymmetries and nonlinear currents in the equatorial electrojet, J. Geophys. Res., 90, 429, 1985.
Kudeki, E., B. G. Fejer ,D. T. Fairly, and C. Hanuise, The Condor equatorial electrojet campaign: Radar result, J. Geophys. Res., 92, 13561, 1987.
Maeda, K. ,T. Tsuda, and H. Maeda, Theoretical interpretation of the equatorial sporadic E layers, Rep. Ionos. Space Res. Jap. 17, 3, 1963.
Lee, K., C. F. Kennel, and F. V. Coroniti, On the marginally stable saturation spectrum of unstable typeⅠequatorial electrojet irrgularities, J. Geophys. Res., 79, 249, 1974.
Machida S. and C. K. Goertz, Computer simulation of the Farley-Buneman instability and anomalous electron heating in the auroral ionosphere, J. Geophys. Res., 93, A9, 9993, 1988.
McDonald, B. E., T. P. Coffey, S. Ossakow, and R. N. Sudan, Preliminary report of numerical simulation of type 2 irregularities in the equatorial electrojet, J. Geophys. Res.,16, 2551, 1974.
McDonald, B. E., T. P. Coffey, S. Ossakow, and R. N. Sudan, Numerical studies of Type 2 electrojet irregularities development, Radio Sci.,247-254, 1975.
Newman, A. L., and E. Ott, Nonlinear simulations of typeⅠirregularities in the equatorial electrojet, J. Geophys. Res., 86, 6879, 1981.
Oppenheim, M. M., N. F. Otani, and C. Ronchi, Saturation of the Fairly-Buneman instability via nonlinear electron drifts, J. Geophys. Res., 101, 17,273, 1996.
Oppenheim, M. M. and N. F. Otani, Spectral characteristics of the Fairly-Buneman instability: Simulations versus observations, J. Geophys. Res., 101,24573, 1996.
Pfaff, R. F., M. C. Kelly, B. G. Fejer, N. C. Maynard, L. H. Brace, B. G. Ledley, L. G. Smith, and R. F. Woodman, Comparative in-situ studies of the unstable day-time equatorial E-region, J. Atmos. Terr. Phys., 47, 791, 1985.
Pfaff, R. F., M. C. Kelly, E Kudeki, B. G. Fejer, and K. D. Baker, Electric field and plasma density measurements in the strongly driven daytime equatorial electrojet, 1, The unstable layer and gradient drift waves, J. Geophys. Res.,92, 13578, 1987a.
Pfaff, R. F., M. C. Kelly, E Kudeki, B. G. Fejer, and K. D. Baker, Electric field and plasma density measurements in the strongly-driven daytime equatorial electrojet.2. Two-stream waves, J. Geophys. Res.,92, 13597, 1987b.
Pfaff, R. F., M. Acuna, P. Marionni, D. Wallis, A. McNamara, W. Swartz, and N. Trivedi, Rocket-borne measurements in the daytime equatorial electrojet from Alcantara, Brazil, paper presented at the Ninth International Symposium on Equatorial Aeronomy (ISEA), Bali, Indonesia, 1995.
Prakash, S., C. L. Jain , B. B. Balsley, and R. A. Greenwald, Evidence of two types of electron density irregularities in the electrojet over Thumba, India, J. Geophys. Res., 79, 4334, 1974.
Robinson, T. R., Toward a self-consistent nonlinear theory of radar auroral backscatter, J. Atmos. Terr. Phys., 48, 417, 1986.
Rogister, A., Nonlinear theory of 'typeⅠ' irregularities in the equatorial electrojet, J. Geophys. Res., 76, 7754, 1971.
Rogister, A. and E. Jamin, Two-dimensonal nonlinear process associated with 'typeⅠ' irregularities in the equatorial electrojet, J. Geophys. Res., 80, 1820, 1975.
Schlegel, k., and C. Haldoupis, Observation of the modified two-stream plasma instability in the mid-latitude E-region ionosphere, J. Geophys. Res., 99,6219, 1994.
Schmit, M.J., and Gray, S. P., Density gradients and the Fairly-Buneman instablity, J. Geophys. Res., 78, 8261, 1973.
Sato, T., Stabilization of the two-stream instability in the equatorial electrojet, Phys. Rev. Lett., 28, 732, 1972.
St.-Maurices, J.-P., and R, Lather, Are observed broadband plasma wave amplitude large enough to explain the enhenced electron-temperature of the high-latitude E region?, J. Geophys. Res., 90, 2843, 1985.
St.-Maurices, J.-P., A unified theory of anomalous resistivity and Joule heating effects in the presence of E region irregularities, J. Geophys. Res., 92, 4533, 1987.
Sudan R. N. and J. Akinrimisi, and D. T. Fairly, Generation of small-scale Irregularities in the Equatorial Electrojet, J. Geophys. Res., 78, 240, 1973.
Sudan, R. N., Unified theory of typeⅠand typeⅡirregularities in the equatorial electrojet, J. Geophys. Res., 88, 4853, 1983.
Swartz W. E. ,CUPRI observations of oblique typeⅠechoes from the equatorial electrojet over Alcantara, Brazil, Geophys. Res. Lett., 24, No.13, 1679, 1997a.
Swartz W. E. ,CUPRI observations of pre-sunrise vertical typeⅠechoes from the equatorial electrojet over Alcantara, Brazil, Geophys. Res. Lett., 24, No.20, 2499, 1997b.
Swartz W. E. ,CUPRI observations of persistence asymmetry reversals in up-down vertical typeⅠechoes from the equatorial electrojet over Alcantara, Brazil, Geophys. Res. Lett., 24, No.13, 1675, 1997c.
Volosevich, A. V., M. A. Livshitz, and V. A. Liperovsky, Nonlinear decay interactions for the instability Buneman-Farley, J. Phys. Colloq. C7, suppl, 40, C7, 1979.
Weinstock, J., and A. Sleeper, Nonlinear saturation of 'typeⅠ' irregularities in the equatorial electrojet, J. Geophys. Res., 77, 3621, 1972.
Weinstock, J., and T. D. Rognlien, Nonlinear saturation and angular rotation of instabilities in the E layer, Radio Sci., 3, 231-237, 1975a.
Weinstock, J., and T. D. Rognlien, Theoretical properties of two-dimensional electrojet turbulence, Radio Sci., 10, 239-246, 1975b.
周雪燕,低緯度及中緯度地區電離層不規則體結構的數值模擬研究,國立中央大學博士論文,1994.
涂麗淑,赤道區電離E層雙流體不穩定現象之模擬研究,國立中央大學碩士論文,1996.
指導教授 郭富雄(FU-SHONG KUO) 審核日期 2001-6-29
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