Abstract

This paper reviews current knowledge about the Earth’s core and the overlying deep mantle in terms of structure, chemical and mineralogical compositions, physical properties, and dynamics, using information from seismology, geophysics, and geochemistry. High-pressure experimental techniques that can help to interpret and understand observations of these properties and compositions in the deep interior are summarized. The paper also examines the consequences of core flows on global observations such as variations in Earth’s rotation and orientation or variations in the Earth’s magnetic field. Processes currently active at the core-mantle boundary and the various coupling mechanisms between the core and the mantle are discussed, together with some evidence from magnetic field observations.

中文翻译：

---

地核和地幔的结构、材料和过程

摘要

本文利用来自地震学、地球物理学和地球化学的信息，从结构、化学和矿物成分、物理性质和动力学方面回顾了当前关于地核和上覆深地幔的知识。总结了有助于解释和理解对内部深处这些特性和成分的观察的高压实验技术。该论文还研究了核心流动对全球观测的影响，例如地球自转和方向的变化或地球磁场的变化。讨论了目前在核幔边界处活跃的过程以及核与地幔之间的各种耦合机制，以及来自磁场观测的一些证据。