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LIST OF FIGURES 5.6 Variations of meridional (solid lines) and zonal (broken lines) winds derived from Doppler imaging data of 01557.7 nm emission in the period of 1-4 June 1994. 5.7 Line-of-sight neutral wind velocities and all-sky images observed at Syowa station in the nighttime from 2357 UT to 0029 UT on July 10-11, 1994. Upper panels, LOS wind velocities superposed on 01630.0 mn fringes; middle panels, LOS wind velocities superposed on 01557.7 nm fringes; lower panels, all-sky images obtained simultaneously by the SIT camera. 5.8 Line-of-sight neutral wind velocities and all-sky images observed at Syowa station in the nighttime from 0031 UT to 0102 UT on July 10-11, 1994. The format is the same as Figure 5.7. 5.9 Line-of-sight neutral wind velocities and all-sky images observed at Syowa station in the nighttime from 0104 UT to 0134 UT on July 10-11, 1994. The format is the same as Figure 5.7. 5.10 Location of four points at which wind velocities and aurora emission intensities are investigated. 5.11 Variations of LOS wind velocities at four locations on the inner and outer fringes illustrated in Figure 5.10, for the 01630.0 nm emission in the nighttime on 10-11 July 1994. 5.12 Same as Figure 5.11 except for the 01557.7 emission. 5.13 Variations of the 01630.0 nm emission intensities at four locations on the inner and outer fringes illustrated in Figure 5.10, for the night of 10-11 July 1994. 5.14 Same as Figure 5.13 except for the 01557.7 nm emission intensities. 5.15 Same as Figure 5.11 except for the night of 3-4 June 1994. 5.16 Same as Figure 5.12 except for the night of 3-4 June 1994. 5.17 Same as Figure 5.13 except for the night of 3-4 June 1994. 5.18 Same as Figure 5.14 except for the night of 3-4 June 1994. 5.19 All-sky images between 2250 UT and 0440 UT on the night of 3-4 June 1994, observed by the SIT camera at Syowa station. 5.20 Same as Figure 5.7 except for the time interval from 0238 UT to 0305 UT on 3-4 June 1994. 5.21 Same as Figure 5.20 except for the time interval from 0306 UT to 0331 UT. 5.22 Same as Figure 5.20 except for the time interval from 0333 UT to 0400 UT. xiii 87 89 91 93 95 96 97 98 99 101 102 103 104 105 107 109 111
xiv LIST OF FIGURES 5.23 Same as Figure 5.20 except for the time interval from 0401 UT to 0426 UT. 6.1 Diurnal variation of the meridional neutral wind in the altitude range of 97 - 500 km above Syowa station calculated by the TIGCM. 6.2 Diurnal variation of the zonal neutral wind in the altitude range of 97 - 500 km above Syowa station calculated by the TIGCM. 6.3 Comparison between the meridional and zonal winds in the F-region calculated by the TIGCM model (thick lines) and the observed wind variations given in Figure 5.3. 6.4 Comparison between the meridional and zonal winds in the I1-region calculated by the TIGCM model (thick lines)and the observed wind variations given in Figure 5.4. 6.5 Variations of magnetic north-south (solid lines) and east-west (broken lines) winds derived from the FPDIS 01630.0 nm emission data. Wind velocities on the 4 nights of 10-13 July 1994 are displayed together. The values of Kp ranged from 0 to 2_, and the value of F10.7 solar flux ranged from 84.1 to 88.9 during this period. 6.6 Same as Figure 6.5 except for the 4 nights of 1-4 June 1994 with Kp values of 3_ to 5 and F10.7 solar flux of 69.5 to 70.3. 6.7 Schematic representation of meridional circulation forced by (a) the ion drag momentum force and (b) the heat source. The broad open arrows denote axes of maxima in the north-south ion drag force. The shaded area represents a strongly heated region [ Walterscheid et al., 1985]. 6.8 Variations of LOS wind velocities observed at Syowa station on the night of 12-13 June 1994. The format is the same as Figure 5.15. 6.9 All-sky images observed in the nighttime of 12-13 June 1994 using the SIT camera at Syowa station. 6.10 Schematic model showing the location of the aurora oval and the events observed on the night of 3-4 June 1994. Symbols '0' indicate the location of Syowa station. 6.11 Triaxial magnetometer data at Syowa station on the night of 3-4 June 1994. 113 118 119 120 121 123 124 126 128 129 133 134
Page 1 and 2: A Study on Middle-scale Variations
Page 3 and 4: Abstract The solar wind energy inje
Page 5 and 6: Contents Acknowledgments Abstract i
Page 7 and 8: 6 Discussions CONTENTS 6.1 Nighttim
Page 9 and 10: x LIST OF FIGURES 2.10 2.11 2.12 2.
Page 11: xii LIST OF FIGURES 4.8 Fringe prof
Page 15 and 16: Chapter 1 Introduction 1.1 The Eart
Page 17 and 18: 1. INTRODUCTION rate at high latitu
Page 19 and 20: 1. INTRODUCTION 5 Analogous to the
Page 21 and 22: 1. INTRODUCTION 7 thermospheric cir
Page 23 and 24: 1. INTRODUCTION 9 Okano and Kim [19
Page 25 and 26: 1. INTRODUCTION confirmed that the
Page 27 and 28: 1. INTRODUCTION 13 and EUV solar ra
Page 29: 1. INTRODUCTION 15 analytical descr
Page 32 and 33: 18 2. DEVELOPMENT OF THE FABRY-PERO
Page 52 and 53: 38 Er e Z O CE F-F-a Ur) h^-• O 0
Page 54 and 55: i 40 2. DEVELOPMENT OF THE FABRY-PE
Page 56 and 57: 42 2. DEVELOPMENT OF TI E FABRY-PER
Page 58 and 59: 44 2. DEVELOPMENT OF THE FABRY -PER
Page 60 and 61: 46 3. OBSERVATIONS 1) The adjustmen
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(b) 3. OBSERVATIONS (a) !7lasigum 1
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3. OBSERVATIONS Table 3.1. Summary
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____------- wind velocity line-of-s
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3. OBSERVATIONS 59 All operations o
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Chapter 4 Procedures of Data Anal y
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4. PROCEDURES OF DATA ANALYSIS 63 2
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-, (a) 1000 500 (b) 1000 500 0 0 4.
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as 4. PROCEDURES OF DATA ANALYSIS 6
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wind velocity v is given by 4. PROC
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80 c..1 0 40 ,7u cn 20 0 0 4. PROCE
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,-C btu cu ...-1 7.) al +t) CI a) 1
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o 5000 4. PROCEDURES OF DATA ANALYS
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(a) 800 600 (i) =g-, 400 ›.- Pc C
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80 5. THER.MOSPIIERIC NEUTRAL WINDS
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8 2 5_ THERMOSPHERIC NEUTRAL WINDS
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I E 84 5. TILERMOSPHERIC NEUTRAL WI
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I 05 8 6 5. THERMOSPILERIC NEUTRAL
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88 5. THERMOSPHERIC NEUTRAL WINDS O
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Line-of-Sight Neutral Wind Velociti
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5. THERMOSPIIERIC NEUTRAL WINDS OVE
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0 Cf) CO • imme F.4 Ca) O 7-1)` c
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$.4 RS 4—) 0.0 X.4 P"'"a Pm( tri
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4 0 • U) 4.) O •-4 • -I•ma
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P-1 • p^^4 4.4 • •.* prZ •p
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5. THERMOSPHERIC NEUTRAL WINDS OVER
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Page 131 and 132:
Chapter 6 Discussions 6.1 Nighttime
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a_ -1 7 6 5 4 3 2 -2 1 0 - 3 _4 -5
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I = - E ,---, c.) u.) a) ..... c.;
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1 (13 C 7)4 "CI ,;3 C N 0 z 0, 2 Ho
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6. DISCUSSIONS 125 is seen in numer
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6. DISCUSSIONS 6.3 Middle-scale atm
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6. DISCUSSIONS 129 15:50:00 lb:00:0
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132 6. DISCUSSIONS It is very inter
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CAD MAGNE TOGFIRM AT STOWR STA T I
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136 7. CONCLUSIONS 5) Nighttime var
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138 REFERENCES Conde, M., and R. W.
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140 REFERENCES Hernandez, G., R. W.
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142 REFERENCES Rees, D., and A. H.
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Appendix A Sequential wind data in
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Line-of-sight neutral wind velociti
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