The Solar Tachocline PDF Download
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Author | : D. W. Hughes |
Publisher | : Cambridge University Press |
Total Pages | : 369 |
Release | : 2007-05-31 |
Genre | : Science |
ISBN | : 113946258X |
Download The Solar Tachocline Book in PDF, ePub and Kindle
Helioseismology has enabled us to probe the internal structure and dynamics of the Sun, including how its rotation varies in the solar interior. The unexpected discovery of an abrupt transition - the tachocline - between the differentially rotating convection zone and the uniformly rotating radiative interior has generated considerable interest and raised many fundamental issues. This volume contains invited reviews from distinguished speakers at the first meeting devoted to the tachocline, held at the Isaac Newton Institute. It provides a comprehensive account of the understanding of the properties and dynamics of the tachocline, including both observational results and major theoretical issues, involving both hydrodynamic and magnetohydrodynamic behaviour. The Solar Tachocline is a valuable reference for researchers and graduate students in astrophysics, heliospheric physics and geophysics, and the dynamics of fluids and plasmas.
Author | : |
Publisher | : |
Total Pages | : 367 |
Release | : 2007 |
Genre | : Helioseismology |
ISBN | : 9780511289545 |
Download The Solar Tachocline Book in PDF, ePub and Kindle
Reference on the tachocline for researchers and graduates in astrophysics, heliospheric physics, and fluid and plasma dynamics.
Author | : Pascale Garaud |
Publisher | : |
Total Pages | : |
Release | : 2001 |
Genre | : |
ISBN | : |
Download Dynamics of the Solar Tachocline Book in PDF, ePub and Kindle
Author | : Toby Wood |
Publisher | : |
Total Pages | : |
Release | : 2011 |
Genre | : |
ISBN | : |
Download The Solar Tachocline Book in PDF, ePub and Kindle
In this dissertation we consider the dynamics of the solar interior, with particular focus on angular momentum balance and magnetic field confinement within the tachocline. In Part I we review current knowledge of the Sun's rotation. We summarise the main mechanisms by which angular momentum is transported within the Sun, and discuss the difficulties in reconciling the observed uniform rotation of the radiative interior with purely hydrodynamical theories. Following Gough & McIntyre (1998) we conclude that a global-scale interior magnetic field provides the most plausible explanation for the observed uniform rotation, provided that it is confined within the tachocline. We discuss potential mechanisms for magnetic field confinement, assuming that the field has a roughly axial-dipolar structure. In particular, we argue that the field is confined, in high latitudes, by a laminar downwelling flow driven by turbulence in the tachocline and convection zone above. In Part II we describe how the magnetic confinement picture is affected by the presence of compositional stratification in the 'helium settling layer' below the convection zone. We use scaling arguments to estimate the rate at which the settling layer forms, and verify our predictions with a simple numerical model. We discuss the implications for lithium depletion in the convection zone. In Part III we present numerical results showing how the Sun's interior magnetic field can be confined, in the polar regions, while maintaining uniform rotation within the radiative envelope. These results come from solving the full, nonlinear equations numerically. We also show how these results can be understood in terms of a reduced, analytical model that is asymptotically valid in the parameter regime of relevance to the solar tachocline. In Part IV we discuss how our high-latitude model can be extended to a global model of magnetic confinement within the tachocline.
Author | : Aniket Sule |
Publisher | : |
Total Pages | : 176 |
Release | : 2007 |
Genre | : |
ISBN | : |
Download Formation and Stability of the Solar Tachocline in MHD Simulations Book in PDF, ePub and Kindle
Author | : Fayyaz Qamar Rashid |
Publisher | : |
Total Pages | : 0 |
Release | : 2010 |
Genre | : |
ISBN | : |
Download Instabilities in the Solar Tachocline Book in PDF, ePub and Kindle
Author | : Carolus J. Schrijver |
Publisher | : Cambridge University Press |
Total Pages | : |
Release | : 2010-09-23 |
Genre | : Science |
ISBN | : 1139489755 |
Download Heliophysics: Evolving Solar Activity and the Climates of Space and Earth Book in PDF, ePub and Kindle
Heliophysics is a fast-developing scientific discipline that integrates studies of the Sun's variability, the surrounding heliosphere, and the environment and climate of planets. Over the past few centuries, our understanding of how the Sun drives space weather and climate on the Earth and other planets has advanced at an ever increasing rate. This 2010 volume, the last in this series of three heliophysics texts, focuses on long-term variability from the Sun's decade-long sunspot cycle and considers the evolution of the planetary system over ten billion years from a climatological perspective. Topics covered range from the dynamo action of stars and planets to processes in the Earth's troposphere, ionosphere, and magnetosphere and their effects on planetary climate and habitability. Supplemented by online teaching materials, it can be used as a textbook for courses or as a foundational reference for researchers in fields from astrophysics and plasma physics to planetary and climate science.
Author | : Andrew M. Soward |
Publisher | : CRC Press |
Total Pages | : 464 |
Release | : 2005-03-16 |
Genre | : Science |
ISBN | : 0203017692 |
Download Fluid Dynamics and Dynamos in Astrophysics and Geophysics Book in PDF, ePub and Kindle
The increasing power of computer resources along with great improvements in observational data in recent years have led to some remarkable and rapid advances in astrophysical fluid dynamics. The subject spans three distinct but overlapping communities whose interests focus on (1) accretion discs and high-energy astrophysics; (2) solar, stellar, and
Author | : David Dritschel |
Publisher | : Springer Science & Business Media |
Total Pages | : 304 |
Release | : 2010-12-09 |
Genre | : Science |
ISBN | : 9400703600 |
Download IUTAM Symposium on Turbulence in the Atmosphere and Oceans Book in PDF, ePub and Kindle
The text of the Persian poet Rum ̄ ̄ ?, written some eight centuries ago, and reproduced at the beginning of this book is still relevant to many of our pursuits of knowledge, not least of turbulence. The text illustrates the inability people have in seeing the whole thing, the ‘big picture’. Everybody looks into the problem from his/her vi- point, and that leads to disagreement and controversy. If we could see the whole thing, our understanding would become complete and there would be no cont- versy. The turbulent motion of the atmosphere and oceans, at the heart of the observed general circulation, is undoubtedly very complex and dif?cult to understand in its entirety. Even ‘bare’ turbulence, without rotation and strati?cation whose effects are paramount in the atmosphere and oceans, still poses great fundamental ch- lenges for understanding after a century of research. Rotating strati?ed turbulence is a relatively new research topic. It is also far richer, exhibiting a host of distinct wave types interacting in a complicated and often subtle way with long-lived - herent structures such as jets or currents and vortices. All of this is tied together by basic ?uid-dynamical nonlinearity, and this gives rise to a multitude of phen- ena: spontaneous wave emission, wave-induced transport, both direct and inverse energy scale cascades, lateral and vertical anisotropy, fronts and transport barriers, anomalous transport in coherent vortices, and a very wide range of dynamical and thermodynamical instabilities.
Author | : B. Bertotti |
Publisher | : Springer Science & Business Media |
Total Pages | : 734 |
Release | : 2003 |
Genre | : Medical |
ISBN | : 9781402014284 |
Download Physics of the Solar System Book in PDF, ePub and Kindle
This volume covers most areas in the physics of the solar system, with special emphasis on gravitational dynamics; its gist is the rational, in particular mathematical, understanding of the main processes at work. Special stress is given to the variety of objects in the planetary system and their long-term evolution. The unique character of this book is its breadth and depth, which aims at bringing the reader to the threshold of original research; however, special chapters and introductory sections are included for the benefit of the beginner. The volume is generally suitable for post-graduate students and researchers in physics, especially in the field related to the solar system. A large amount of figures and diagrams is included, often compiled with real data.