| 浅谈板块运动的外部力源 |
| 点此下载全文 |
| 引用本文：李启成,景立平,任常愚.2008.浅谈板块运动的外部力源[J].地球学报,29(2):241-246. |
| DOI：10.3975/cagsb.2008.02.16 |
| 摘要点击次数: 2241 |
| 全文下载次数: 4170 |
|
| 基金项目:高等教育科学研究“十一五“规划项目(编号:115C-168) |
|
| 中文摘要:推动地球板块运动的力可以分为内部力源和外部力源，只有外部力源才会使地球板块产生持续的同向运动。在对历史地质资料总结的基础上，得出银河年周期对地球板块的运动有重大影响。可以认为全球板块聚合一离散周期以银河年为周期。全球板块大约在一个银河年内（220-250Ma）离散一聚合一次。在比较现代科学技术手段对地球板块运动的监测结果和地球受到的太阳、月亮固体潮的理论计算结果基础上，得出结论：太阳、月亮对地球的固体潮力是推动地球板块日常运动的重要外部力源。除此之外，自转的影响也是使板块运动的力源。 |
| 中文关键词:固体潮 自转 板块运动 银河系 |
| |
| A Tentative Discussion on the External Driving Force of Plate Motion |
|
|
| Abstract: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. |
| keywords:solid tides rotation plate motion galaxy |
| 查看全文 查看/发表评论 下载PDF阅读器 |
