摘要
本文首次提出中新生代大陆聚散与洋壳更新过程，在运动学上属于球面二维螺旋运动；它是地幔环流三维螺旋运动的球面反映。地幔三维螺旋运动的成因机制是地幔径向环流与其绕地轴的旋转运动相耦合的结果；在运动学上，它与地球大气及海洋环流的三维螺旋运动性质相同，都与地球旋转运动有成因联系；它们的差别在于大气及海洋热对流源于太阳热辐射与地球重力作用，而地幔热对流之热能则源于地球内部。本文提出了地球各层圈物质运动的热力学过程与地球天体运动存在有机联系的证据，阐明了建立地球系统科学的方向。
This paper suggests for the first time that the Meso-Cenozoic process of continentalconvergence,dispersal,and oceanic crustal renewal kinematically belongs to a spherical two-dimentsional sprial movement and is a spherical -surface reflection of the three- dimensionalsprial movement of the mantle circulation. The three- dimensional spiral movement of themantle is genetically the result of coupling of the mantle meridional circulation with the rotationof the mantle currents around the Eartr’s axis,and is similar in kinematic nature to that of theEarth’s atmospheric and oceanic circulations,both being genetically related with the Earth’s rotation. The only difference between them is that the thermal energy of the atmosppheric andoceanic thermal convections is derived from the solar readiation,while that of the mantlethermal convection comes from the Earth’S interior.The present paper gives evidence for theclose link between the thermodynamic process of mass movement of the Earth’s spheres andthe movement of the Earth as a celestial body,thus pinpointing a direction for studying thescience of the Earth’s system.
出处
《地球学报》
EI
CAS
CSCD
1994年第Z2期113-129,共16页
Acta Geoscientica Sinica
基金
黄汲清院士和任纪舜研究员为首席科学家的地矿部重点攻关项目
关键词
大陆运动学模式
大陆动力学机制
大陆全球螺旋运动
continental kinematic model continental dynamic mechanism world-widespiral movement of continents
