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| Author | : D. E. Smylie |
| Publisher | : American Geophysical Union |
| Total Pages | : 133 |
| Release | : 1988 |
| Genre | : Science |
| ISBN | : 0875904505 |
Papers from: All Union Symposium U2 on 'Instability within the Earth and core Dynamics' held on August 20-21 1987 in Vancouver.
| Author | : J. L. Le Mouël |
| Publisher | : American Geophysical Union |
| Total Pages | : 218 |
| Release | : 1993-01-11 |
| Genre | : Science |
| ISBN | : |
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 72. The study of the Earth's deep interior is the object of a spectacular development due both to new techniques of observation (including very long baseline interferometry and superconducting gravimeters) and to progress in theory spurred by new computing capability. Stimulated by the international SEDI group, founded in 1986, geophysicists from different disciplines—Earth dynamicists, seismologists, geomagneticians, mineral physicists—began to cooperate and integmte more fully one another's work. SEDI meetings favor and promote those close contacts and cooperation. Great efforts will still be needed before all the disciplinary divisions dissolve—if they ever do—but things are clearly improving, as shown by this AGU monograph. We think indeed that this volume is a good, although incomplete, illustration of the situation as described above and that it is a benchmark in the exciting story of the progress in knowledge of the deep interior of our planet.
| Author | : Veronique Dehant |
| Publisher | : Springer |
| Total Pages | : 0 |
| Release | : 2023-09-30 |
| Genre | : Science |
| ISBN | : 9783031392818 |
During the recent decades, space missions (e.g., CHAMP, GOCE, GRACE and Swarm) have been developed by space agencies in Europe and the USA to measure the Earth’s gravity and magnetic fields and their spatio-temporal variations. These successful missions have already provided a wealth of groundbreaking results about the permanent and time-variable gravity and magnetic fields of the Earth. However, more can be learned about the Earth’s structure by combining data of the gravity and magnetic fields, together with Earth’s rotation data routinely measured using space geodesy techniques, as well as with the most up-to-date modelling of the Earth's internal structure. Use in synergy of these global observables and model data represents a unique way to further investigate the physics of the deep Earth's interior. In addition to the well-known correlation between Earth’s rotation and magnetic field observed at interannual and decadal time scales, recent studies have reported unexpected correlation between spatio-temporal changes of the gravity field and magnetic field, also at interannual time scale. These changes may result from processes occurring in the liquid core and at the core-mantle boundary. This book gathers a series of chapters that provide state-of-the art overviews on the gravity field, magnetic field and Earth’s rotation observations, and on their interpretation in terms of the deep Earth’s structure, as well as on core dynamics and processes at the core-mantle boundary. The chapters 'Gravity Variations and Ground Deformations Resulting from Core Dynamics', 'Rapid Variations of Earth’s Core Magnetic Field', 'A Dynamical Prospective on Interannual Geomagnetic Field Changes', 'Core Eigenmodes and their Impact on the Earth’s Rotation', 'Earth’s Rotation: Observations and Relation to Deep Interior', 'Interiors of Earth-Like Planets and Satellites of the Solar System', 'Correction to: Interiors of Earth-like planets and satellites of the Solar System', 'Fluid Dynamics Experiments for Planetary Interiors', 'Structure, Materials and Processes in the Earth’s Core and Mantle', 'Correction to: Structure, Materials and Processes in the Earth’s Core and Mantle' and 'Applications and Challenges of GRACE and GRACE Follow-On Satellite Gravimetry' are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com. Previously published in Surveys in Geophysics, Volume 43, Issue 1, 2022
| Author | : National Academies of Sciences, Engineering, and Medicine |
| Publisher | : National Academies Press |
| Total Pages | : 29 |
| Release | : 2019-06-18 |
| Genre | : Science |
| ISBN | : 0309492432 |
We live on a dynamic Earth shaped by both natural processes and the impacts of humans on their environment. It is in our collective interest to observe and understand our planet, and to predict future behavior to the extent possible, in order to effectively manage resources, successfully respond to threats from natural and human-induced environmental change, and capitalize on the opportunities â€" social, economic, security, and more â€" that such knowledge can bring. By continuously monitoring and exploring Earth, developing a deep understanding of its evolving behavior, and characterizing the processes that shape and reshape the environment in which we live, we not only advance knowledge and basic discovery about our planet, but we further develop the foundation upon which benefits to society are built. Thriving on Our Changing Planet: A Decadal Strategy for Earth Observation from Space (National Academies Press, 2018) provides detailed guidance on how relevant federal agencies can ensure that the United States receives the maximum benefit from its investments in Earth observations from space, while operating within realistic cost constraints. This short booklet, designed to be accessible to the general public, provides a summary of the key ideas and recommendations from the full decadal survey report.
| Author | : Shun-Ichiro Karato |
| Publisher | : Princeton University Press |
| Total Pages | : 268 |
| Release | : 2003-05-26 |
| Genre | : Science |
| ISBN | : 9780691095110 |
Publisher Description
| Author | : D. E. Smylie |
| Publisher | : Cambridge University Press |
| Total Pages | : 559 |
| Release | : 2013-03-07 |
| Genre | : Science |
| ISBN | : 1107310628 |
The Earth is a dynamic system. Internal processes, together with external gravitational forces of the Sun, Moon and planets, displace the Earth's mass, impacting on its shape, rotation and gravitational field. D. E. Smylie provides a rigorous overview of the dynamical behaviour of the solid Earth, explaining the theory and presenting methods for numerical implementation. Topics include advanced digital analysis, earthquake displacement fields, Free Core Nutations observed by the Very Long Baseline Interferometric technique, translational modes of the solid inner core observed by the superconducting gravimeters, and dynamics of the outer fluid core. This book is supported by freeware computer code, available online for students to implement the theory. Online materials also include a suite of graphics generated from the numerical analysis, combined with 100 graphic examples in the book to make this an ideal tool for researchers and graduate students in the fields of geodesy, seismology and solid Earth geophysics. The book covers broadly applicable subjects such as the analysis of unequally spaced time series by Singular Value Decomposition, as well as specific topics on Earth dynamics.
| Author | : Roman Teisseyre |
| Publisher | : Elsevier Publishing Company |
| Total Pages | : 492 |
| Release | : 1993 |
| Genre | : Science |
| ISBN | : |
The gravity data, after some assumptions, could be a source of information about the density distribution in the mantle. This is of special value because the density distribution is included directly in the equation of motion for fluid.
| Author | : Véronique Dehant |
| Publisher | : American Geophysical Union |
| Total Pages | : 294 |
| Release | : 2003-01-10 |
| Genre | : Science |
| ISBN | : |
Published by the American Geophysical Union as part of the Geodynamics Series, Volume 31. Geomagnetism, dynamo theory, seismology, geodesy, and mineral physics each present significant perspectives on Earth's core. When interelated, scientists gain and invaluable vantage from which to understans the evolution, dynamics, and state of the core. Earth's Core: Dynamics, Structure, Rotation presents a synthesis of current understanding in proactive analyses of Earth core phenomena, including research in core composition, wave-speed variation, magnetic field signatures, core mantle boundary issues, and more.
| Author | : Vernon F. Cormier |
| Publisher | : Elsevier |
| Total Pages | : 326 |
| Release | : 2021-12-04 |
| Genre | : Science |
| ISBN | : 0128113871 |
Earth’s Core: Geophysics of a Planet’s Deepest Interior provides a multidisciplinary approach to Earth’s core, including seismology, mineral physics, geomagnetism, and geodynamics. The book examines current observations, experiments, and theories; identifies outstanding research questions; and suggests future directions for study. With topics ranging from the structure of the core-mantle boundary region, to the chemical and physical properties of the core, the workings of the geodynamo, inner core seismology and dynamics, and core formation, this book offers a multidisciplinary perspective on what we know and what we know we have yet to discover. The book begins with the fundamental material and concepts in seismology, mineral physics, geomagnetism, and geodynamics, accessible from a wide range of backgrounds. The book then builds on this foundation to introduce current research, including observations, experiments, and theories. By identifying unsolved problems and promising routes to their solutions, the book is intended to motivate further research, making it a valuable resource both for students entering Earth and planetary sciences and for researchers in a particular subdiscipline who need to broaden their understanding. Includes multidisciplinary observations constraining the composition and dynamics of the Earth’s core Concisely presents competing theories and arguments on the composition, state, and dynamics of the Earth’s interior Provides observational tests of various theories to enhance understanding Serves as a valuable resource for researchers in deep earth geophysics, as well as many sub-disciplines, including seismology, geodynamics, geomagnetism, and mineral physics
| Author | : R. Sabadini |
| Publisher | : Springer |
| Total Pages | : 337 |
| Release | : 2014-11-14 |
| Genre | : Science |
| ISBN | : 9401717095 |
This volume opens up new perspectives on the physics of the Earth's interior for graduate students and researchers working in the fields of geophysics and geodesy. It looks at our planet in an integrated fashion, linking the physics of its interior to the geophysical and geodetic techniques that record, over a broad spectrum of spatial wavelengths, the ongoing modifications in the shape and gravity field of the planet. Basic issues related to the rheological properties of the Earth's mantle and to its slow deformation will be understood, in both mathematical and physical terms, within the framework of an analytical normal mode relaxation theory. Fundamentals of this theory are developed in the first, tutorial part. The second part deals with a wide range of applications, ranging from changes in the Earth's rotation to post-seismic deformation and sea-level variations induced by post-glacial rebound. In the study of the physics of the Earth's interior, the book bridges the gap between seismology and geodynamics.
