Earth’s Variable Rotation: Geophysical Causes And Consequences地球的可变旋转：地球物理学原因与结果

作者： Kurt Lambeck著

出 版 社：

出版时间： 2005-6-1字数：版次：页数： 449印刷时间： 2005/06/01开本： 16开印次：纸张： 胶版纸I S B N ： 9780521673303包装： 平装内容简介

Astronomers have long noted that the Earth does not rotate uniformly about an axis fixed in the planet, that both the length-of-day and the direction of the rotation axis vary periodically and irregularly by small amounts. These variations are an immediate consequence of the Earth not being a rigid body. In this book Professor Lambeck discusses the irregular nature of this motion and the geophysical mechanisms responsible for it. A complete analysis of these causes requires a discussion of solid Earth physics, magnetohydrodynamics, oceanography and meteorology. The study of the Earth's rotation is therefore of interest not only to astronomers who wish to explain their observations, but also to many geophysicists who use the astronomers' observations to understand better the Earth's response to a variety of applied forces. The author emphasizes the important contributions made over the last 15 years, this progress being in part a consequence of the overall progress in geophysics and planetary physics and of the developments in space science and technology, which not only require that the Earth's motion be precisely known but which also have provided new and precise methods for monitoring this motion. This book is suitable for geophysicists, astronomers and geodesists who are actively engaged in research as well as for graduate students.

目录

Preface

1 A perspective

2 Some physical properties of the Earth

2.1 Elastic deformation

2.2 Anelastic deformation

2.3 The core

2.4 Gravity field

3 Rotational dynamics

3.1 Rigid body rotation

3.2 Non-rigid body rotation: general formulation

3.3 Rotation of spheroid with fluid core

3.4 Rotational deformation

3.5 Damped linear motion

4 Excitation functions

4.1 Alternative formulations

4.2 Surface loading

4.3 Schematic excitation functions

5 The astronomical evidence

5.1 Observations of the Earth's rotation

5.2 Length-of-day

5.3 Polar motion

5.4 New observation techniques

6 Tides

6.1 Earth tides

6.2 Ocean and atmospheric tides

6.3 Satellite observations of tidal parameters

6.4 Tidal perturbations in rotation

7 Seasonal variations

7.1 Atmospheric pressure

7.2 Groundwater

7.3 Oceans

7.4 Winds

7.5 Astronomical and geophysical comparisons

7.6 Non-seasonal meteorological exictations in l.o.d.

8 The Chandler wobble

8.1 The Chandler period of the solid Earth

8.2 Dissipation in the solid Earth

8.3 The pole tide

8.4 Excitation of the Chandler wobble

9 Decade fluctuations

9.1 Core-mantle coupling

9,2 Oceanic and atmospheric contributions

9.3 Earthquakes

9.4 Conclusions

10 Tidal dissipation

10.1 Introduction

10.2 The problem

10.3 Astronomical evidence

10.4 Ocean tide dissipation

10.5 Discussion

11 Paleorotation

11.1 Polar wander

11.2 Tidal accelerations in the geological past

11.3 Paleontological docks

11.4 Paleorotation and the lunar orbit

Bibliography

Author index

Subject index