Applications of Normal Mode Relaxation Theory to Solid Earth Geophysics
Applications of Normal Mode Relaxation Theory to Solid Earth Geophysics
复制标题
简正模态弛豫理论在固体地球物理中的应用
DOI：
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发表时间：
2004
期刊：
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通讯作者：
R. Sabadini
中科院分区：
文献类型：
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作者：
R. Sabadini
简正模态弛豫理论是从球形、自引力和分层地球的基本原理发展而来的，旨在为地球物理学和大地测量学领域的研究生和研究人员提供有关地球内部物理学的新视角。这一理论使我们能够以综合的方式研究我们的星球，将其内部的物理学与地球物理和大地测量技术联系起来，这些技术在广泛的空间波长范围内记录地球形状和重力场的持续变化。在分析正态模式方法的框架内，以数学和物理术语介绍了与地幔流变特性及其缓慢变形相关的基本问题。在教程的第一部分阐述了该理论的基础知识后，将在广泛的应用中介绍一些应用，从地球自转的变化到震后变形和冰期后反弹引起的海平面变化。在地球内部物理学的研究中，简正模态弛豫理论弥合了地震学和地球动力学之间的差距。
The normal mode relaxation theory is developed from basic principles for a spherical, self-gravitating and stratified Earth, and is targeted towards new perspectives on the physics of the Earth’s interior for graduate students and researchers working in the fields of geophysics and geodesy. This theory allows us to study 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 are introduced, in both mathematical and physical terms, within the framework of an analytical normal mode approach. After the fundamentals of this theory developed in the first, tutorial part, some applications will be presented, in 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 normal mode relaxation theory bridges the gap between seismology and geodynamics.