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作 者:滕吉文[1] 董兴朋[1,2] 闫雅芬[1] 毛慧慧[1,2]
机构地区:[1]中国科学院地质与地球物理研究所,北京100029 [2]中国科学院大学,北京100049
出 处:《地质论评》2016年第3期513-538,共26页Geological Review
基 金:国家自然科学基金项目(编号:41130419)资助的成果~~
摘 要:地球内部物质在动力作用下重新分异、调整,深部和浅部物质与能量进行着强烈的交换和运动,并导致成山、成盆、成岩、成矿和地震与火山等灾害的形成。地球动力学受到地球科学界的高度重视,并相继产生了诸多假说,如地球的收缩说、膨胀说、脉动说、自转说、涌流说、地幔对流说、地壳均衡说等,而问题是何为其力源?因为力源确是驱动地球内部物质运动的核心所在。本文通过对各种动力假说的分析和理解,讨论了1地球内部物质运动和动力学响应;2对历史上诸多动力学假说的分析和理解;3地球内部物质运动的深层动力学过程;4地球动力学研究中的几个重要科学问题的思考;5地球内部物质运动和动力学响应与力源及机制问题的探索。地球科学研究中的核心问题不仅涉及到地球内部的物质组成、空间特异结构与变异,而更为重要的却是如何深化认识地球本体,并厘定物质运动的动力学响应和力源机制。Objectives: The material of internal earth experienced differentiation and adjustment under the dynamic processes and deep and shallow of earth exchange materials and energy strongly,which result in the formation of mountains,basins,minerals,earthquake and volcanic hazards. Geodynamic is highly valued by earth science community,and many hypotheses have been proposed,such as earth contraction theory,earth expansion theory,earth pulsation theory,earth rotation theory,flow theory,mantle convection theory and isostasy theory and so on,but the key question is which the force source is! The reason is that force source is at the heart of material movement in the interior of the earth.Results: According to realization of those geodynamic hypotheses,five questions are discussed as follows: ①the material of internal earth movement and geodynamic response; ② understanding and analysis of many geodynamic hypotheses; ③ deep geodynamic process of material movement in the interior of the earth; ④ thinking of several important scientific questions in geodynamic research; ⑤ exploration of the force source of material movement in the interior of the earth and geodynamic response.Conclusions: The core issue in earth science not only involves composition of earth's interior,space specific structure and variation,but more important question is how to understand earth deeply and set the dynamic response of material movement and the force source mechanism.
关 键 词:地球内部 物质运动 深层过程 动力学响应 力源机制
分 类 号:P31[天文地球—固体地球物理学]
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