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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Numerical studies on the orographic effects on easterly cold surges in Southern China.

January 1993 (has links)
by Lee Kwok Lun. / Title also in Chinese characters. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1993. / Includes bibliographical references (leaves 145-147). / ACKNOWLEDGEMENTS --- p.iii / ABSTRACT --- p.iv / Chapter CHAPTER 1 --- INTRODUCTION --- p.1 / Chapter 1.1 --- WINTER MONSOON IN EAST ASIA / Chapter 1.2 --- THE SURGES AND THE EFFECTS ON LOCAL WEATHER / Chapter 1.3 --- PREDICTION OF WINTER MONSOON SURGES / Chapter 1.4 --- COASTAL FEATURES AT OTHER PLACES / Chapter 1.5 --- OBJECTIVES AND METHODOLOGY / Chapter CHAPTER 2 --- THE NUMERICAL MODEL --- p.10 / Chapter 2.1 --- THE GOVERNING EQUATIONS / Chapter 2.1.1 --- INDEPENDENT VARIABLES / Chapter 2.1.2 --- DEPENDENT VARIABLES / Chapter 2.1.3 --- THE COMPLETE SET OF MODEL EQUATIONS / Chapter 2.2 --- MODEL DOMAIN AND GRID STRUCTURE / Chapter 2.3 --- SPATIAL FINITE DIFFERENCE SCHEMES / Chapter 2.3.1 --- ADVECTION TERMS / Chapter 2.3.2 --- DIFFUSION TERM / Chapter 2.3.3 --- PRESSURE GRADIENT FORCE TERM / Chapter 2.3.4 --- INTEGRATION OF HYDROSTATIC EQUATION / Chapter 2.4 --- TIME INTEGRATION SCHEME / Chapter 2.5 --- LATERAL BOUNDARY CONDITIONS / Chapter 2.6 --- PARAMETERIZATION OF PHYSICAL PROCESSES / Chapter 2.6.1 --- PLANETARY BOUNDARY LAYER PHYSICS / Chapter 2.6.2 --- EVALUATION OF DIABATIC HEATING / Chapter 2.7 --- INITIALIZATION / Chapter CHAPTER 3 --- SIMULATIONS OF ACTUAL EASTERLY COLD SURGE EVENTS --- p.32 / Chapter 3.1 --- CHOICE OF MODEL DOMAIN / Chapter 3.2 --- INITIAL AND LATERAL BOUNDARY DATA / Chapter 3.3 --- THE ACTUAL EVENTS / Chapter 3.3.1 --- CASE STUDY1A / Chapter 3.3.1.1 --- Synoptic Environment During the Event / Chapter 3.3.1.2 --- The Simulation of the Actual Event / Chapter 3.3.1.3 --- Diagnosis of the Simulation Results / Chapter 3.3.2 --- CASE STUDY2A / Chapter 3.3.3. --- CASE STUDY3A / Chapter 3.4 --- SUMMARY / Chapter CHAPTER 4 --- NUMERICAL EXPERIMENTS ON THE OROGRAPHIC EFFECTS ON THE EASTERLY COLD SURGE --- p.77 / Chapter 4.1 --- THE NUMERICAL EXPERIMENTS / Chapter 4.2 --- NO TERRAIN EXPERIMENTS / Chapter 4.3 --- EFFECTS OF TAIWAN ISLAND / Chapter 4.4 --- IDEAL COASTAL RANGE EXPERIMENTS / Chapter 4.5 --- SUMMARY / Chapter CHAPTER 5 --- THEORETICAL CONSIDERATION OF THE FORMATION OF THE COASTAL NARROW RIDGE --- p.96 / Chapter 5.1 --- INTRODUCTION / Chapter 5.2 --- THE KELVIN WAVE MODEL / Chapter 5.3 --- COMPARISON OF COASTAL PHENOMENA AT OTHER PLACES / Chapter 5.3.1 --- THE AUSTRALIA CASE / Chapter 5.3.2 --- THE NORTH AMERICA CASE / Chapter 5.4 --- THE SOUTHEAST CHINA COASTAL RIDGE / Chapter 5.5 --- OTHER MECHANISMS BESIDES OROGRAPHIC EFFECTS / Chapter CHAPTER 6 --- CONCLUSION --- p.109 / APPENDIX A DERIVATION OF GOVERNING EQUATIONS --- p.112 / APPENDIX B HORIZONTAL SMOOTHING AND HORIZONTAL DIFFUSION --- p.120 / APPENDIX C DIAGNOSTIC VARIABLES --- p.122 / APPENDIX D EXTERNAL AND INTERNAL KELVIN WAVES --- p.125 / APPENDIX E FORTRAN SOURCE CODE OF THE NUMERICAL MODEL --- p.129 / REFERENCES --- p.147
2

study on the coastally trapped wave features of easterly cold surges and on the orographic effects on northerly cold surges in Southern China =: 華南地形對偏東寒潮海岸攔截波性質及偏北寒潮影響的硏究. / 華南地形對偏東寒潮海岸攔截波性質及偏北寒潮影響的硏究 / A study on the coastally trapped wave features of easterly cold surges and on the orographic effects on northerly cold surges in Southern China =: Hua nan di xing dui pian dong han chao hai an lan jie bo xing zhi ji pian bei han chao ying xiang de yan jiu. / Hua nan di xing dui pian dong han chao hai an lan jie bo xing zhi ji pian bei han chao ying xiang de yan jiu

January 1995 (has links)
Wong Wai Kin. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1995. / Includes bibliographical references (leaves 195-200). / Wong Wai Kin. / Acknowledgements --- p.i / Abstract --- p.ii / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Kelvin features in easterly surges in southern China --- p.5 / Chapter 1.2 --- Northerly surges in southern China --- p.7 / Chapter 1.3 --- Objectives and Methodology --- p.8 / Chapter 2 --- Theory of Kelvin Waves against an Incline --- p.9 / Chapter 2.1 --- Introduction --- p.9 / Chapter 2.2 --- General formalism --- p.13 / Chapter 2.3 --- Vertical barrier --- p.17 / Chapter 2 4 --- Infinite incline --- p.18 / Chapter 2.5 --- Finite incline --- p.21 / Chapter 2.6 --- Analysis of scales and non-dimensional variables --- p.24 / Chapter 2.7 --- The governing equation of pressure disturbance --- p.30 / Chapter 2.7.1 --- Variational Principle --- p.31 / Chapter 2.7.2 --- Integration of continuity equation --- p.32 / Chapter 2 8 --- Kelvin waves against a topography --- p.33 / Chapter 2.9 --- Summary --- p.37 / Chapter 3 --- Numerical Study of Linear Kelvin Waves --- p.39 / Chapter 3.1 --- Introduction --- p.39 / Chapter 3.2 --- Shallow Water Wave Theory --- p.40 / Chapter 3.3 --- Kelvin wave in the presence of topography --- p.43 / Chapter 3.4 --- Numerical model --- p.47 / Chapter 3.5 --- Uniform or slowly varying topography depth --- p.50 / Chapter 3.5.1 --- Uniform topographical depth --- p.51 / Chapter 3.5.2 --- Slowly varying bottom topography --- p.52 / Chapter 3.6 --- Numerical study on infinite incline --- p.54 / Chapter 3.7 --- Finite incline --- p.57 / Chapter 3.8 --- Numerical experiments using more realistic terrain --- p.61 / Chapter 3.8.1 --- Experiment A --- p.61 / Chapter 3.8.2 --- Experiment --- p.64 / Chapter 3.9 --- Further discussion --- p.69 / Chapter 3.10 --- Coastal Kelvin waves features of northeasterly cold surges in Southern China --- p.74 / Chapter 3.11 --- Summary --- p.75 / Chapter 4 --- Nonlinear Kelvin Waves Features --- p.78 / Chapter 4.1 --- Introduction --- p.78 / Chapter 4.2 --- Mathematical Model --- p.82 / Chapter 4.3 --- Existence of Non-linear Travelling Solution --- p.85 / Chapter 4.4 --- Qualitative discussion on solution --- p.86 / Chapter 4.4.1 --- Linearized equation at Z = 0 --- p.87 / Chapter 4.4.2 --- Linearized equations at Z1 --- p.88 / Chapter 4.4.3 --- Case with no viscosity --- p.88 / Chapter 4.4.4 --- Case with viscosity: m2 > m2 > 0 --- p.92 / Chapter 4.4.5 --- Case with viscosity: m2 > m2 > 0 --- p.94 / Chapter 4.5 --- Expression for the wave speed --- p.95 / Chapter 4.5.1 --- Solitary Wave --- p.96 / Chapter 4.5.2 --- Travelling Wave --- p.96 / Chapter 4.6 --- Numerical Calculations --- p.98 / Chapter 4.6.1 --- Shooting method --- p.98 / Chapter 4.6.2 --- Nonlinear Periodic Solution --- p.100 / Chapter 4.6.3 --- Nonlinear Solitary Wave Solution --- p.100 / Chapter 4.6.4 --- Oscillatory Travelling Wave Solution --- p.102 / Chapter 4.6.5 --- Monotonic Travelling Wave Solution --- p.104 / Chapter 4.7 --- Wave Disturbance along y direction --- p.107 / Chapter 4 8 --- Existence of the terrain gradient --- p.109 / Chapter 4.9 --- Summary --- p.116 / Chapter 5 --- Froude Number Study on Northerly Cold surges --- p.118 / Chapter 5.1 --- Introduction --- p.118 / Chapter 5.1.1 --- Prediction of cold surges passing over the NanLing Range --- p.118 / Chapter 5.1.2 --- Theoretical studies on orographic blocking effect and the Froude number --- p.119 / Chapter 5.2 --- Methodology --- p.123 / Chapter 5.2.1 --- Physical meaning of the Froude number --- p.123 / Chapter 5.2.2 --- Definition of northerly cold surges --- p.125 / Chapter 5.2.3 --- Method of calculation using ECMWF data set --- p.126 / Chapter 5 .2. --- 4 Calculation using the meteorological station data --- p.127 / Chapter 5.3 --- Result --- p.127 / Chapter 5.3.1 --- Froude Number Statistics using ECMWF data --- p.127 / Chapter 5.3.2 --- Froude number statistics using meteorological station data --- p.133 / Chapter 5.4 --- Non-dimensional number statistics combining rotation and stratification --- p.135 / Chapter 5.5 --- Summary --- p.138 / Chapter 6 --- Diagnostic Study on Northerly Cold Surge --- p.140 / Chapter 6.1 --- Introduction --- p.140 / Chapter 6. 2 --- Diagnostic variables in the study --- p.141 / Chapter 6.2.1 --- Diagnosis of geopotential tendency in terms of advection of relative vorticity --- p.142 / Chapter 6.2.2 --- Diagnosis of the vertical motion --- p.144 / Chapter 6.3 --- Data and calculation --- p.147 / Chapter 6.4 --- Results and Discussion --- p.149 / Chapter 6. 4 --- .1 Brief description on the cold surge --- p.149 / Chapter 6.4.2 --- Diagnosis using ECMWF data set --- p.149 / Chapter 6.4.3 --- Diagnosis using the limited area model simulation results --- p.161 / Chapter 6.5 --- Summary --- p.162 / Chapter 7 --- Conclusion --- p.169 / Appendices --- p.172 / Chapter A --- Non-dimensional Governing Equations --- p.172 / Chapter B --- Governing Equation for Pressure Disturbance --- p.177 / Chapter B.1 --- Variation Approach --- p.177 / Chapter B.2 --- Integration of Continuity Equation --- p.180 / Chapter C --- "Semigeostrophic Theory, Dispersion and Dissipation" --- p.182 / Chapter C.1 --- Semigeostrophic Approximation --- p.182 / Chapter C.2 --- Dispersive effects --- p.188 / Chapter C.3 --- Dissipative effects --- p.190 / Chapter D --- Bibliography

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