A Study of the Free Oscillations of the Earth PDF Download
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Author: Gordon J. F. Macdonald
Publisher:
ISBN:
Category : Free earth oscillations
Languages : en
Pages : 56
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Book Description
Introduction -- Observations of the toroidal oscillations -- Equations of motion -- Effect of rotation on toroidal oscillations -- Core-mantle boundary condition -- Viscous interactions of core and mantle -- Electromagnetic interaction of core and mantle -- Effect of the steady toroidal magnetic field on the lower boundary of the mantle -- Distribution of energy -- Model calculations -- Origin of the low velocity layer -- References -- Appexdix A: list of symbols.
Author: Gordon J. F. Macdonald
Publisher:
ISBN:
Category : Free earth oscillations
Languages : en
Pages : 56
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Book Description
Introduction -- Observations of the toroidal oscillations -- Equations of motion -- Effect of rotation on toroidal oscillations -- Core-mantle boundary condition -- Viscous interactions of core and mantle -- Electromagnetic interaction of core and mantle -- Effect of the steady toroidal magnetic field on the lower boundary of the mantle -- Distribution of energy -- Model calculations -- Origin of the low velocity layer -- References -- Appexdix A: list of symbols.
Author: Gordon J. F. MacDonald
Publisher:
ISBN:
Category : Fluid mechanics
Languages : en
Pages : 26
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 558
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Book Description
Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 830
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Book Description
Author: Rolf Meissner
Publisher: Springer Science & Business Media
ISBN: 0387218009
Category : Science
Languages : en
Pages : 207
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Book Description
Acknowledgments chapter 1 The Roots of Earth Sciences 1 Classical Scientific Thought 1 The Copernican Revolution 2 From Physics and Philosophy to Geology 4 The Age of the Earth 6 chapter 2 The Earth in the Context of Our Solar System 9 The Origins of the Solar System The Elements of the Solar System The Planets Circling the Sun chapter 3 The Formation of Earth and Moon 21 Similarities and Differences 21 Exploring the Moon chapter 4 The Interior of the Earth and the Role of Seismology Seismic Waves 28 The Earth’s Interior 36 chapter 5 Rotation and Shape, Gravity and Tides 41 Describing the Earth’s Shape Tides 44 Rotation 44 43 27 23 15 12 10 xiii xi chapter 6 The Earth’s Magnetic Field 47 Establishing a Physical Concept Reversals of the Magnetic Field 51 Paleomagnetism chapter 7 Atom—Mineral—Rock 59 Crystallization 60 Minerals in Crust and Mantle 60 Rocks chapter 8 The Early Ages 71 The Archean 71 The Proterozoic 77 chapter 9 Radioactive Dating The Chemistry of Unstable Elements Determining the Age Applications of Radioactive Dating Techniques Carbon Dating 90 chapter10 Plate Tectonics Twentieth-Century Research Gathering Evidence 95 Drifting Plates 3 Pangea and Beyond 4 chapter11 The Crust of the Earth 7 The Moho 7 The Crust Hydrocarbons 4 Coal 9 Other Subsurface-based Resources 9 12 12 12 108 10 10 10 10 94 93 89 83 81 81 63 52 48 chapter12 Formation of Mountains and Basins Collisions Orogeny Sediment Basins
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1324
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Book Description
Author:
Publisher: Academic Press
ISBN: 0080568408
Category : Science
Languages : en
Pages : 461
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Book Description
Advances in Geophysics
Author: Oleg V. Petrov
Publisher: Springer Nature
ISBN: 3030675173
Category : Science
Languages : en
Pages : 113
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Book Description
This book presents the formulations and solutions of the wave equation for the Earth’s free oscillations concerning the particular nodal, bifurcation, perspectival, and projective reference points within the framework of the three “great geometries” of Euclid, Lobachevsky, and Riemann. When studying the relationship between the propagation velocity of various types of bulk and surface seismic waves with radial, spheroidal, and torsional eigen oscillations of the Earth having corresponding periods, we are struck by the fundamental problem of obtaining reference points that allow physical meaning to be attributed to all these discrete oscillatory and continuous wave phenomena that occur in nature. Several unsuccessful attempts tried to unify the relationship of discrete oscillations and the velocity of waves and light occurring in seismology and other phenomena associated with gravity and matter, using a three-dimensional visual space-time model continuous Euclidean space. Using simple and illustrative examples for describing the free oscillations of the Earth and taking into account new visible event horizons related to the velocity of waves and light propagation, the author formulated and solved the fundamental wave equation of nature in the form of the three “great theorems”: Galilean, Lorentz, and Poincaré spatiotemporal transformations.
Author:
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 292
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Book Description
Author: Valerio de Rubeis
Publisher: Springer Science & Business Media
ISBN: 3642123007
Category : Science
Languages : en
Pages : 365
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Book Description
Processes of synchronization and interaction play a very special role in different physical problems concerning the dynamics of the Earth’s interior; they are of particular importance in the study of seismic phenomena, and their complexity is strongly affected by the variety of geological structures and inhomogeneities of the medium that hamper the course of these processes and their intensity. The attempt to tackle these problems is a great challenge from experimental, observational and theoretical point of view. We present in this Monograph the theoretical and experimental results achieved in the frame of the European Project “Triggering and synchronization of seismic/ acoustic events by weak external forcing as a sign of approaching the critical point” (INTAS Ref. Nr 05-1000008-7889); in this Project, which was inspired by Professor Tamaz Chelidze, our aim was to give grounds for better understanding and interpretation of dynamical interactive processes of physical ?elds, both found in the laboratory experiments as well as in ?eld observations. One of the leading problems – related to synchronization and interaction of different physical ?elds in fracture processes concerns triggering and initiation of rupture and displa- ments within the Earth interior. From this point of view, the results from laboratory studies on synchronization and interaction and those found and involved in ?eld observations, helped to improve the theoretical background. Reversely, some of the presented new theoretical approaches have served to stimulate laboratory and ?eld studies.
