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Structure and Dynamics of Earth's Deep Interior

Structure and Dynamics of Earth's Deep Interior

D. E. Smylie (Editor), Raymond Hide (Editor)

ISBN: 978-1-118-66656-2

Mar 2013, American Geophysical Union

133 pages

Select type: O-Book


Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 46.

All Union Symposium U2 on "Instability within the Earth and Core Dynamics" was held on Thursday, August 20 and Friday, August 21, 1987 in Vancouver, Canada as part of the XIX General Assembly of the International Union of Geodesy and Geophysics. The Symposium was convened and organized by Raymond Hide, David Loper and D. E. Smylie. It involved the presentation of thirty papers in sessions entitled "The Discovery of Core Modes: Observations and Theory", "Core Structure and Flow", "The International Program on the Study of the Earth's Deep Interior (SEDI)", "Core Motions and Geomagnetism" and "Hydromagnetics and Dynamo Theory".

Preface ix

1. Have Inertial Waves Been Identified from the Earth's Core?
P. J. Melchior, D. J. Crossley, V. P. Dehant and B. Ducarme 1

2. Inertial Modes in the Earth's Fluid Outer Core
Keith D. Aidridge, L. Ian Lumb and Gary A. Henderson 13

3. Variational Calculation of Core Modes in Realistic Earth Models
D. E. Smylie 23

4. Core Undertones in an Elliptical Uniformly Rotating Earth
Veronique Dehant 29

5. An Experimental Study of Inertial Waves in a Spheroidal Shell of Rotating Fluid
L. Ian Lumb and Keith D. Aidridge 35

6. The Excitation of Core Modes by Earthquakes
David J. Crossley 41

7. Inertial Waves in a Differentially Rotating Fluid
Sterling Gunn and K eith D. Aidridge 51

8. Evidence for Lateral Heterogeneity at the Core-Mantle Boundary from the Slowness of
Diffracted S Profiles
Michael E. Wysession and Emile A. Okal 55

9. Seismic Wave Scattering and the Earth's Structure in the Lower Mantle
R. A. W. Haddon and G. G. R. Buchbinder 65

10. Planetary Scale Flow in the Earth's Core and Geodetic Observations
J. B. Merriam 73

11. Tidal Flow in the Earth's Core: A Search for the Epoch and Amplitude of Exact Resonance in
the Past
Jacque Hsinderer and Hilaire Legros 79

12. Crystallization of the Earth's Inner Core
Orson L. Anderson and David A. Young 83

13. Motions of the Earth's Core and Mantle and Variations of the Earth's Magnetic Field Revisited
Raymond Hide 91

14. Types of Liquid Core Motions Compatible with the Observed Geomagnetic Secular Variations
of Several Hundred Years
Takes Yiukutake and Yukiko Yokoyama 95

15. Variations of the Vertical Between Mizusawa and Washington, D.C. and Those of the
Geomagnetic Field
Chuichi Kakuta 107

16. Dynamics of the Earth's Core and the Geodynamo
F. H. Busse and K.-K. Zhang 113

17. An Inclined  Dynamo
Anthony M. K. Szeto 121

18. Instabilities of Toroidal Magnetic Fields
David R. Fearn 129