Download or read book The Chaotic Solar Cycle written by Arnold Hanslmeier and published by Springer Nature. This book was released on 2020-11-30 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers an overview of solar physics with a focus on solar activity, particularly the activity cycle. It is known that solar activity varies periodically, but there are also phases of intermittency, such as the Maunder minimum, during which solar activity is very low or high over several decades. The book provides a brief introduction to chaos theory and investigates solar activity in terms of its chaotic behavior. It also discusses how intermittent phases of solar activity have affected and can affect Earth’s climate and long-term space weather, and reviews the underlying theories relating to the solar dynamo mechanism. Furthermore, each chapter includes references to scientific literature (review articles and papers) so that readers can delve deeper into the subjects covered. This richly illustrated book will appeal to a wide readership, and is also useful as a textbook for courses in solar physics and astrophysics.
Download or read book Chaotic Dynamics of the Solar Cycle written by Edward A. Spiegel and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Solar Activity Cycle written by André Balogh and published by Springer. This book was released on 2015-04-16 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of papers edited by four experts in the field, this book sets out to describe the way solar activity is manifested in observations of the solar interior, the photosphere, the chromosphere, the corona and the heliosphere. The 11-year solar activity cycle, more generally known as the sunspot cycle, is a fundamental property of the Sun. This phenomenon is the generation and evolution of magnetic fields in the Sun’s convection zone, the photosphere. It is only by the careful enumeration and description of the phenomena and their variations that one can clarify their interdependences. The sunspot cycle has been tracked back about four centuries, and it has been recognized that to make this data set a really useful tool in understanding how the activity cycle works and how it can be predicted, a very careful and detailed effort is needed to generate sunspot numbers. This book deals with this topic, together with several others that present related phenomena that all indicate the physical processes that take place in the Sun and its exterior environment. The reviews in the book also present the latest theoretical and modelling studies that attempt to explain the activity cycle. It remains true, as has been shown in the unexpected characteristics of the first two solar cycles in the 21st century, that predictability remains a serious challenge. Nevertheless, the highly expert and detailed reviews in this book, using the very best solar observations from both ground- and space based telescopes, provide the best possible report on what is known and what is yet to be discovered. Originally published in Space Science Reviews, Vol 186, Issues 1-4, 2014.
Download or read book Chaotic Dynamics of the Solar Cycle written by and published by . This book was released on 1996 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cyclic variation of solar activity is both irregular and intermittent. We have sought to isolate and illuminate the physical mechanisms of this behavior and to provide a mathematical description of it. Our work has brought out three ingredients of the solar cycle that we believe to be central to its operation. (1) The seat of the solar cycle is in a shear layer just below the solar convection zone. We have investigated the structure of this layer (which we call the solar tachocline) in some detail. (2) The spatio-temporal development of the solar cycle is represented by the propagation of robust solitary waves which are affected by dissipation and instability. We have studied the structure and interactions of such waves, which we call solitoids. (3) On top of the simple propagative behavior of the solar solitoids there are intermissions during which the number of sunspots remains quite small. We attribute these intermissions (such as the Maunder minimum) to a form of interaction between the convection zone and the tachocline which is characteristic of a process that we have developed and that we call on/off intermittency. These three ingredients make up some of the key features of the solar cycle and may be expected to play a role in future simulations of the solar cycle.
Download or read book Solar Cycles written by Henry Helm Clayton and published by . This book was released on 1947 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grand Phases on the Sun written by Steven Haywood Yaskell and published by Trafford Publishing. This book was released on 2012-12-31 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: It was one more defeat in our long and losing battle to keep the Sun perfect, or, if not perfect, constant, and if inconstant, regular. Why we think the Sun should be any of these when other stars are not is more a question for social than for physical science. John A. (“Jack”) Eddy Delineator of the Maunder Minimum On the human Idée fi xe as to why the Sun must be seen energetically as a linear entity. Around 1904, Kapteyn noticed that the stars did not move randomly through space, but that their movements had preferential directions... there was regularity in something astronomers had always thought to be chaotic. Adriaan Blaauw, emeritus director of the Kapteyn Institute, Groningen, Netherlands On Jacob Cornelius Kapteyn’s discovery of star streaming: the concept of galactic rotation and so, proof of some regularity in stellar behavior.
Download or read book Solar and Stellar Activity Cycles written by Peter R. Wilson and published by Cambridge University Press. This book was released on 1994 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: A timely and authoritative synthesis of our understanding of activity cycles in the Sun and similar stars for graduate students and researchers.
Download or read book In Search of Chaos and Attractors in the Solar Cycle written by Josephine G. Palencia and published by . This book was released on 1994 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sunspot Cycles written by Derek Justin Schove and published by . This book was released on 1983 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Earth s Climate Response to a Changing Sun written by Katja Matthes and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: For centuries, scientists have been fascinated by the role of the Sun in the Earth's climate system. Recent discoveries, outlined in this book, have gradually unveiled a complex picture, in which our variable Sun affects the climate variability via a number of subtle pathways, the implications of which are only now becoming clear. This handbook provides the scientifically curious, from undergraduate students to policy makers with a complete and accessible panorama of our present understanding of the Sun-climate connection. 61 experts from different communities have contributed to it, which reflects the highly multidisciplinary nature of this topic. The handbook is organised as a mosaic of short chapters, each of which addresses a specific aspect, and can be read independently. The reader will learn about the assumptions, the data, the models, and the unknowns behind each mechanism by which solar variability may impact climate variability. None of these mechanisms can adequately explain global warming observed since the 1950s. However, several of them do impact climate variability, in particular on a regional level. This handbook aims at addressing these issues in a factual way, and thereby challenge the reader to sharpen his/her critical thinking in a debate that is frequently distorted by unfounded claims.
Download or read book Multiperiodicity Chaos and Intermittency in a Reduced Model of the Solar Cycle written by Paul Charbonneau and published by . This book was released on 2001 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a recent paper, Durney (2000) has discussed a physically plausible procedure whereby the dynamo equations describing magnetic field regeneration in Babcock-Leighton models of the solar cycle can be reduced to a one-dimensional iterative map. This procedure is used here to investigate the behavior of various dynamo-inspired maps. Durney's explanation of the so-called odd-even effect in sunspot cycle peak amplitudes, which he ascribed to a period-2 limit cycle, is found to be robust with respect the choice of nonlinearity defining the map, and to the action of strong stochastic forcing. In fact, even maps without limit cycles are found to show a strong odd-even signal in the presence of forcing. Some of the stochastically forced maps are found to exhibit a form of on-off intermittency, with periods of activity separated by quiescent phases of low cycle amplitudes. In one such map, a strong odd-even signal is found to be a good precursor to the transition from bursting to quiescent behavior.
Download or read book Solar History written by Sacha Dobler and published by . This book was released on 2018-11 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: It may be counterintuitive: periods of high solar activity and high sunspot numbers - which are associated with a stable and more favorable climate - are also periods of increased mass excitability, war and genocide. In fact, throughout the last millennium, there were 4.6 times as many deaths from war, genocide and persecution during Grand Solar Maxima than there were in Grand Solar Minimum. In contrast, Grand Solar Minima - the 'bad-weather periods' - were times of relative peace, reason and of improvements of human rights.In the 1920s, the Russian scientist Alexander Tchijevsky discovered that social excitability, wars and rebellions unfolded primarily at the peaks of the 11-year solar cycles (Schwabe- cycles).I found that within the past 1000 years, what is true for the 11-years cycles, also applies to the non-periodical cycles of Grand Solar Minima and Maxima, recurring roughly every 200 or 400 years. Not only were most mass killings committed during these Grand Maxima, but the corresponding uprisings and rebellions mostly ended up in collectivist, totalitarian systems, that appealed to group ideologies, violent mob rule and imperialism. The narration of the history of this period is intended to illustrate this pattern and to warn of future repetitions. In addition to the multi decadal trends of wars and atrocities, we even find singular battles and mass hysteria in connection with the visible manifestations of high solar peaks, solar storms, visible sunspots and aurora. This book is about our future as much as it is about the past, as we are most likely entering the next Grand Solar Minimum within decades. If the trends of previous centuries continue, when the next Grand Solar Minimum begins, we can expect not only some inconvenient material adaptation processes, but ultimately also a social mood of increased reason, relative peace, rationality and the protection of human rights.This can give us a time window of between several decades and a hundred years to find out how we prevent the next round of mass killing and collectivist extremism in the future Solar Maximum. If we succeed, future generations may live in a world more peaceful than ever.
Download or read book Self Organized Criticality in Astrophysics written by Markus Aschwanden and published by Springer Science & Business Media. This book was released on 2011-01-11 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Markus Aschwanden introduces the concept of self-organized criticality (SOC) and shows that due to its universality and ubiquity it is a law of nature for which he derives the theoretical framework and specific physical models in this book. He begins by providing an overview of the many diverse phenomena in nature which may be attributed to SOC behaviour. The author then introduces the classic lattice-based SOC models that may be explored using numerical computer simulations. These simulations require an in-depth knowledge of a wide range of mathematical techniques which the author introduces and describes in subsequent chapters. These include the statistics of random processes, time series analysis, time scale distributions, and waiting time distributions. Such mathematical techniques are needed to model and understand the power-law-like occurrence frequency distributions of SOC phenomena. Finally, the author discusses fractal geometry and scaling laws before looking at a range of physical SOC models which may be applicable in various aspects of astrophysics. Problems, solutions and a glossary will enhance the pedagogical usefulness of the book. SOC has been receiving growing attention in the astrophysical and solar physics community. This book will be welcomed by students and researchers studying complex critical phenomena.
Download or read book Past and Present Variability of the Solar terrestrial System written by Giuliana Cini Castagnoli and published by IOS Press. This book was released on 1997 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: The global climate of the Earth has significantly varied over the last millennia. On a regional scale, the climate has varied and does presently vary on many different time scales, leading to a continuously changing pattern of temperatures, humidity, precipitation, with important effects on the whole terrestrial biosphere. Physicist are interested in understanding the mechanism at work by gathering data and properly analysing them, by building theoretical models and, if possible, making predictions on the future evolution of the system. Along these lines, an important question is to understand the role of the solar forcing, in order to unravel the internal mechanisms of variability of the Earth's climate from the variable forcing of the Sun. On the other hand, one can learn about the past solar variability by reading into the terrestrial archives that provide us with proxy data on the history of both the Sun and the climate. Thus, realizing that the Sun and the Earth form a closely coupled system, where the variable properties of the former may affect in many subtle ways the behaviour of the latter, is an important step toward the understanding of both.This book is explicitly devoted to these issues. First, it is important to obtain reliable data from terrestrial archives, and to properly date the records that have been measured. The first part of the book is devoted to these crucial aspects, dealing with various types of proxy data and with the difficult issue of the dating of the records. Once obtained, the data has to be interpreted. This process nowadays relies upon a plethora of data analysis methods that explicitly take into account the nonlinear nature of the system and try to elucidate the dynamics and the main processes active in the measured system. The second part of the book is devoted to the issue of data analysis and prediction. Finally, once the data has been interpreted and analyzed, theoretical models have to be built describing the dynamics of the system considered. Due to the extreme complexity of the Sun/Earth system (as well as of its components, the Sun itself and the Earth's climate), drastic simplifications in the modelling efforts have to be accepted and one has to bear in mind that the models probably are nothing more than a pale image of the real dynamics. The third part of the book is devoted to the theoretical and numerical modelling of the solar and climatic variability, and of their complex interactions. This volume gives an up-to-date view of the present state of this field.
Download or read book Lectures on Solar and Planetary Dynamos written by M. R. E. Proctor and published by Cambridge University Press. This book was released on 1994-12-08 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprised of lectures for an intensive course held at the Newton Institute in Cambridge, as part of a NATO Advanced Study Institute, the topics covered within this volume include planetary and solar dynamos, fast dynamos, and the use of symmetry principles to derive evolution equations.
Download or read book The Solar Tachocline written by D. W. Hughes and published by Cambridge University Press. This book was released on 2007-05-31 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Nonlinear Time Series Analysis in the Geosciences written by Reik V. Donner and published by Springer Science & Business Media. This book was released on 2008-08-18 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The understanding of dynamical processes in the complex system “Earth” requires the appropriate analysis of a large amount of data from observations and/or model simulations. In this volume, modern nonlinear approaches are introduced and used to study specifiic questions relevant to present-day geoscience. The approaches include spatio-temporal methods, time-frequency analysis, dimension analysis (in particular, for multivariate data), nonlinear statistical decomposition, methods designed for treating data with uneven sampling or missing values, nonlinear correlation and synchronization analysis, surrogate data techniques, network approaches, and nonlinear methods of noise reduction. This book aims to present a collection of state-of-the-art scientific contributions used in current studies by some of the world's leading scientists in this field.
