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作者 Hughes, D. W
書名 The Solar Tachocline
出版項 Cambridge : Cambridge University Press, 2007
©2007
國際標準書號 9780511288227 (electronic bk.)
9780521861014
book jacket
說明 1 online resource (383 pages)
text txt rdacontent
computer c rdamedia
online resource cr rdacarrier
附註 Cover -- Half -title -- Title -- Copyright -- Contents -- Contributors -- Preface -- Part I Setting the scene -- 1 An introduction to the solar tachocline -- 1.1 Preamble -- 1.2 Some basic properties of the Sun -- 1.3 Solar spin-down -- 1.4 The rotation of the Sun today -- 1.5 The solar tachocline -- 1.6 On the basic dynamics of the tachocline -- 1.7 Tachocline instability and the solar dynamo -- Acknowledgments -- 2 Reflections on the solar tachocline -- 2.1 The maculate Sun -- 2.2 Braking the Sun's rotation -- 2.3 Solar spin-down -- 2.4 Solar intermittency -- 2.5 Into the 1990s -- 2.6 From recollections to reflections -- References -- Part II Observations -- 3 Observational results and issues concerning the tachocline -- 3.1 Introduction -- 3.2 Helioseismic techniques -- 3.3 Solar internal structure and rotation -- 3.4 Dynamical properties of the tachocline -- 3.5 The structure of the tachocline region -- 3.6 Outlook -- References -- Part III Hydrodynamic models -- 4 Hydrodynamic models of the tachocline -- 4.1 Introduction -- 4.2 Setting the stage -- 4.3 The tachocline: governing equations and simplifying assumptions -- 4.4 Laminar penetration -- 4.5 A hydrodynamic remedy against the spread of the tachocline: anisotropic turbulence -- 4.6 Which turbulence? -- 4.7 Ventilation time and mixing -- 4.8 Internal gravity waves -- 4.9 Conclusion -- Acknowledgments -- References -- 5 Turbulence in the tachocline -- 5.1 Introduction -- 5.2 The upper tachocline: penetrative convection -- 5.3 The lower tachocline: stably-stratified turbulence and shear -- 5.3.1 Overview -- 5.4 Summary -- 5.4.1 Acknowledgments -- References -- 6 Mean field modelling of differential rotation -- 6.1 Introduction -- 6.2 The …-effect -- 6.3 Turbulent heat transport -- 6.4 Solar models -- 6.5 Stellar models -- 6.6 Antisolar rotation? -- Acknowledgements -- References
Part IV Hydromagnetic properties -- 7 Magnetic confinement of the solar tachocline -- 7.1 Introduction -- 7.1.1 Magnetic fields in the tachocline -- 7.1.2 Characteristic numbers in the tachocline -- 7.2 Primordial field confinement: the slow tachocline -- 7.2.1 First models -- 7.2.2 Towards a self-consistent model: the governing equations -- 7.2.3 The Gough & McIntyre boundary layer analysis -- 7.2.4 Numerical solutions of the Gough & McIntyre model -- 7.2.4.1 Steady-state calculations -- 7.2.4.2 Time-dependent calculations -- 7.2.5 Discussion and prospects for slow tachocline models -- 7.2.5.1 Stability of the slow tachocline models -- 7.2.5.2 Gravity waves as angular momentum transporters -- 7.2.5.3 Boundary conditions -- 7.3 Dynamo field confinement: the fast tachocline -- 7.3.2 Discussions and prospect for the dynamo confinement model -- 7.4 Discussion and prospects -- Acknowledgments -- References -- 8 Magnetic confinement and the sharp tachopause -- 8.1 Introduction -- 8.2 Gyroscopic pumping and HSZ burrowing -- 8.3 The nearly laminar magnetic interior -- 8.4 The high-latitude tachocline and its invisible shear -- 8.5 The effects of compositional stratification Nµ -- 8.6 Concluding remarks -- Acknowledgments -- References -- 9 β-Plane MHD turbulence and dissipation in the solar tachocline -- 9.1 Introduction -- 9.2 Some basic aspects of two-dimensional MHD turbulence on a β-plane -- 9.3 The Rhines scale for MHD turbulence on a β-plane -- 9.4 Spectral transfer and turbulent dissipation in β-plane MHD -- 9.5 Discussion and conclusions -- References -- Part V Instabilities -- 10 Global MHD instabilities of the tachocline -- 10.1 Introduction -- 10.2 Classical shear and magneto-shear instabilities -- 10.3 Two-dimensional shell models -- 10.3.1 Basic equations: nonlinear and linear -- 10.3.2 Ideal fluid linear MHD instabilities
10.3.3 Ideal fluid nonlinear MHD instabilities -- 10.3.4 Effects of drag -- 10.4 Towards three dimensions -- 10.4.1 Shallow 'water' theory -- 10.4.1.1 Equations -- 10.4.1.2 Reference states -- 10.4.1.3 Hydrodynamic instabilities -- 10.4.1.4 Magnetohydrodynamic instabilities -- 10.4.2 Fine radial structure instabilities -- 10.5 Conclusions: implications for the Sun -- Acknowledgments -- References -- 11 Magnetic buoyancy instabilities in the tachocline -- 11.1 Introduction -- 11.2 The magnetic buoyancy instability of a large-scale field -- 11.2.1 Linear considerations -- 11.2.1.1 The instability mechanism -- 11.2.1.2 The role of diffusion -- 11.2.1.3 The influence of rotation -- 11.2.1.4 The interaction with a shear flow -- 11.2.2 Nonlinear evolution -- 11.3 The instability of isolated flux tubes -- 11.4 The buoyant rise of isolated flux tubes -- 11.5 Implications for the tachocline -- References -- 12 Instabilities, angular momentum transport and MHD turbulence -- 12.1 Introduction -- 12.2 Angular momentum transport in general -- 12.3 The magnetorotational instability -- 12.4 Statistical models of anisotropic MHD turbulence -- 12.5 Analysis of localized perturbations -- 12.5.1 Introduction -- 12.5.2 Local dispersion relation -- 12.5.3 Case of zero magnetic field -- 12.5.4 Limit of a weak magnetic field -- 12.5.5 Case of no rotation -- 12.5.6 Application to the tachocline -- 12.5.7 General remarks -- 12.6 Conclusion -- Acknowledgements -- References -- Part VI Dynamo action -- 13 The solar dynamo and the tachocline -- 13.1 Observations -- 13.2 Mechanisms -- 13.2.1 Differential rotation -- 13.3 Where is the solar dynamo? -- 13.4 Models of cyclic activity -- 13.4.1 The form of the magnetic field -- 13.5 Modulation -- 13.6 Structure of the tachocline -- Part VII Overview -- 14 On studying the rotating solar interior -- 14.1 Afterthoughts
14.2 The key issues -- 14.2.1 How is the tachocline defined, and where is it? -- 14.3 Comments on modelling and simulations -- 14.4 The (possible) role of experiments -- 14.5 Comments and conclusions -- References -- Index
A reference on the tachocline for researchers and graduates in astrophysics, heliospheric physics, and fluid and plasma dynamics
Description based on publisher supplied metadata and other sources
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2020. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
鏈接 Print version: Hughes, D. W. The Solar Tachocline Cambridge : Cambridge University Press,c2007 9780521861014
主題 Helioseismology
Electronic books
Alt Author Rosner, R
Weiss, N. O
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