| 浅谈板块运动的外部力源 |
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| 关键词:solid tides rotation plate motion galaxy |
| 基金项目:高等教育科学研究“十一五“规划项目(编号:115C-168) |
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| 摘要: |
| A Tentative Discussion on the External Driving Force of Plate Motion |
| There are two kinds of force driving the motion of the earth plate, namely, internal force and external force. The internal force cannot cause the constant motion of the earth plate in the same direction, and only the external force can do so. It is thought that the cycle of the earth plate's aggregation and dispersion makes up a year of galaxy, and the earth plate approximately converges and disperses once a year of galaxy (220～250 Ma). Based on a summary of historical geological information, It is concluded that the motional cycle of galaxy has a great influence on the motion of earth plate. On the basis of a comparison between investigation into motion of earth plate by modern technology and calculation result of solid tides obtained from the sun and the moon, the authors have reached the following conclusion: the solid tides coming from the sun and the moon are main external force that pushes the earth plate motion. Furthermore, the rotation of the earth is another factor responsible for earth plate motion. |
| LI Qi-cheng,JING Li-ping,REN Chang-yu.2008.A Tentative Discussion on the External Driving Force of Plate Motion[J].Acta Geoscientica Sinica,29(2):241-246. |
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