地球系统动力学纲要

OUTLINE OF EARTH SYSTEM DYNAMICS

与地球系统科学和全球变化密切相关的地球系统动力学研究地球系统多层块耦合作用的结构、过程、机理和效应,是地球动力学、岩石圈动力学、大陆动力学、海洋动力学、大气动力学的高度综合。本文采用分尺度、分层块、分阶段的思路研究复杂的地球系统,将地球系统动力学按空间、时间和物质分为地球内部系统动力学、地球表层系统动力学、地球外部系统动力学,历史地球系统动力学、现代地球系统动力学、未来地球系统动力学,气体地球系统动力学、液体地球系统动力学、固体地球系统动力学,分析了地球系统的耦合特征、耦合类型和耦合方式,初步探讨地球内部系统与地球外部系统耦合作用的耦合边界、物质运动、动力来源和耦合机制。最终将地球系统相互作用的各层块作为一个有机的整体进行综合,认为地球内部放射性衰变生热和地球外部太阳辐射生热是驱动地球复杂开放系统层块耦合的主要动力源。

Earth system dynamics closely related to earth system science and global change research deals with the structure, process, mechanism and effect of the layer - block coupling in earth system and is resulted from the high synthesis of earth dynamics, lithospheric dynamics, continental dynamics, oceanic dynamics and gas dynamics.This paper is focused on complicated earth system at different scales, different layer - block combinations, and different stages. Earth system dynamics can be classified into earth interior system dynamics, earth surface system dynamics, and earth external system dynamics based on space, and historical earth system dynamics, modern earth system dynamics, future earth system dynamics based on time, as well as gas earth system dynamics, liquid earth system dynamics, and solid earth system dynamics based on state of substance. The paper analyses the features,types, and modes for earth system coupling, and discusses the coupling boundary, motion of matter, power sources, and coupling mechanism between earth interior system and earth external system, and finally by taking the interacting multi -layers in the earth system as a whole structure, considers that radioactive heat production in the earth interior system and solar radiation heat production from the earth external system are the dominating power sources for the layer - block coupling in intricate open earth system.