建议用准确的力学概念研究地球动力学  

Requirement of accurate mechanical concepts in geodynamic study

作　　者：刘瑞珣[1] 

机构地区：[1]北京大学地球与空间科学学院,北京100871

出　　处：《地学前缘》2007年第3期57-63,共7页Earth Science Frontiers

基　　金：国家自然科学基金项目"华北北缘中生代挤压-伸展构造体制转换过程研究"(40172074);国家自然科学基金项目"红河断裂带晚第三纪断裂活动转换过程微观研究"(40577127)

摘　　要：随着构造地质和地球动力学研究的深入,所引用的力学概念也越来越多,这些概念在力学中已先于地质学有严格的定义,那么引用这些概念时也应该遵循这些定义,以免错用。在进行构造解析和地球动力学分析时,准确运用力学概念有利于对问题的精确和量化解释,否则不仅不利于地质学的发展,还会阻碍地质学与力学和地球物理学之间的交流。然而,近年的文献中误用力学概念的现象时有发生,这与学科日新月异发展的形势很不相称。地质学每次突跃式发展都与其他学科,尤其力学概念的引入分不开。文章仅就几个最常用的力学概念作些基本解释,以期引起关注和研讨。The mechanical concepts have widely applied in structural geology and geodynamics. Each mechanical concept has its own strict definition in mechanics before it was introduced into geology. Accurate application of mechanical concepts in tectonic analysis and geodynamic study would facilitate correct interpretation and quantification. Otherwise, inaccurate or incorrect use of these concepts would block development of structural geology, and create communication difficulties between mechanics and geophysics. Unfortunately, the mechanical concepts have been sometimes misused in geology. This does not match up with the rapid development of modern structural geology. In fact, advancement of geology has been closely connected With the application or introduction of new achievements of other subjects, especially mechanics. A few important mechanical concepts commonly used in geology were briefly interpreted in this paper for arousing learners＇ attention and promoting further discussion.

关 键 词：地球动力学 力学概念 摩尔圆 地球物理学 构造解析 

分 类 号：P542[天文地球—构造地质学] P553[天文地球—地质学]