| 地幔活动在南海扩张中的作用数值模拟与讨论 |
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| 引用本文： | 崔学军,夏斌,张宴华,刘宝明,王冉,闫义.地幔活动在南海扩张中的作用数值模拟与讨论[J].大地构造与成矿学,2005,29(3):334-338. |
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| 作者姓名： | 崔学军 夏斌 张宴华 刘宝明 王冉 闫义 |
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| 作者单位： | 中国科学院,边缘海地质重点实验室,中国科学院,广州地球化学研究所,广东,广州,510640;CSIRO Exploration & Mining,PO Box 1130,Bentley,WA 6102,Australia |
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| 基金项目： | 中国科学院知识创新工程项目 |
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| 摘 要： | 对于地幔活动对南海扩张有无影响及影响大小这一问题,目前仍存在不同观点。本文采用数值模拟方法对地幔活动在南海扩张中的作用和影响进行了考查,结果表明:地幔上涌作用能引起南海岩石圈很大程度的减薄,但对南海地壳减薄影响很小;地幔上涌作用是南海扩张的重要动力学因素之一,但只在地幔上涌作用下要很长的时间才能打开南海。
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| 关 键 词： | 南海 地幔上涌 数值模拟 |
| 文章编号： | 1001-1552(2005)03-0334-05 |
| 收稿时间： | 2004-11-21 |
| 修稿时间： | 2004年11月21 |
A NUMERICAL MODELING STUDY ON THE "ASTHENOSPHERE UPWELLING" OF SOUTH CHINA SEA |
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| CUI Xuejun,XIA Bin,Zhang Y H,Liu Baoming,WANG Ran,YAN Yi.A NUMERICAL MODELING STUDY ON THE "ASTHENOSPHERE UPWELLING" OF SOUTH CHINA SEA[J].Geotectonica et Metallogenia,2005,29(3):334-338. |
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| Authors: | CUI Xuejun XIA Bin Zhang Y H Liu Baoming WANG Ran YAN Yi |
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| Abstract: | A numerical approach was used to explore the following key issues: how does the “asthenosphere upwelling” behave in terms of mechanism towards the expansion of the South China Sea? and how to evaluate such a behavior? Our results indicate that asthenosphere upwelling is much more efficient for the lithospheric thinning in the upper mantle but is still inefficient for crust thinning. It is the combination of mechanical extension and asthenosphere upwelling that proves to be the most efficient way to thin the entire lithosphere, and that represents the most likely driving force for the opening and spreading of the South China Sea. |
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| Keywords: | South China Sea asthenosphere upwelling numerical modeling |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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