| 论地质科学中全球变化研究的方法 |
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| 引用本文： | 钱维宏.论地质科学中全球变化研究的方法[J].地学前缘,1997(Z1). |
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| 作者姓名： | 钱维宏 |
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| 作者单位： | 北京大学地球物理系 |
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| 摘 要： | 文章借引用与大气和海洋全球变化有关的研究方法论述了与地质科学有关的全球变化问题。为使地质上的全球变化研究有一个理论依据，首先从数学上划分了自然中的对流与结构。银河系中星云旋臂相对星云星座为结构。太阳系中行星绕太阳的线速度随离太阳的距离均匀递减相对行星的自转是一种结构。在地质上，大陆板块好比是一种结构，而山系就是所谓的对流。结构是分层次的，对流是相对确定层次下的结构而言的。我们通过对银河系、太阳系以及地球大气、海洋和固体地球中结构的描述，就会发现在确定的层次下结构可以用线性动力学的方法描写。文章分析了宏观地质结构形成的力源问题，认为圈层角动量交换应力和地转偏向力的共同作用可以从量级上解释大陆的漂移及其漂移的方向性。最后，对地球科学全球变化研究的前景作了初步的探讨
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| 关 键 词： | 地质科学 全球变化 研究方法 大陆漂移 力源 |
METHODOLOGY OF GLOBAL CHANGE STUDY IN THE GEOLOGICAL SCIENCES |
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| Qian Weihong.METHODOLOGY OF GLOBAL CHANGE STUDY IN THE GEOLOGICAL SCIENCES[J].Earth Science Frontiers,1997(Z1). |
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| Authors: | Qian Weihong |
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| Abstract: | Some methodological problem of the global change study associated with the geological sciences has been illustrated by introducing research results of the atmospheric and oceanic sciences in this paper. To obtain a theoretical basis of global change study, a method of mathematical analysis in different time space scales is used to divide natural phenomena into convection and structure in any subsystem. The structure′s space scale is larger than convection′s. The structures at different space levels include the helical lines compared with constellation in the Galaxy and the planet′s motion velocity compared with planet′s rotation in the solar system. In geological conditions, the continental plate is a structure and the mountain range is a convection. By analyzing different level′s structures in the Galaxy, solar system, atmosphere, ocean and solid earth respectively, it is found that the structure can be described in accordance with linear dynamics. In geological sciences the forcing sources of macro structure mainly include the stress of angular momentum exchange between spheres and the Coriolis force. The stress and the Coriolis force can explain continental plate′s drift in determined direction. Finally the prospect of global change study in the earth sciences is also discussed. |
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| Keywords: | geological science global change method continental drift forcing source |
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