地质科学
     首页 | 过刊浏览 |  本刊介绍 |  编委会 |  投稿指南 |  期刊征订 |  留言板 |  批评建议 |  联系我们 |  English
地质科学  2018, Vol. 53 Issue (4): 1499-1512    DOI: 10.12017/dzkx.2018.090
论文 最新目录 | 下期目录 | 过刊浏览 | 高级检索  |   
地球接受太阳辐射能量变化对板块构造影响的估算
田嘉铖    季建清
北京大学地球与空间科学学院,造山带与地壳演化教育部重点实验室  北京    100871
The sppearance and potential mechanism of how variations of solar insolation could affect plate tectonics
Tian Jiacheng    Ji Jianqing
Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, Beijing  100871
 全文: PDF (961 KB)   HTML( )   输出: BibTeX | EndNote (RIS)      背景资料
摘要 

板块构造理论可以被认为是构造地质学研究的基本模型和框架。传统板块构造理论认为岩石圈板块在软流圈上方随软流圈对流发生运动,软流圈对流所需要的能量则完全由地球内部能量,如重力势能和放射性衰变产生的热能提供。但是近年来的一些研究证明了气候变化会对板块构造活动,如造山带活动产生直接影响。对传统的板块构造所需能量全部由地球内部提供这一观点做出了补充和更新。本文主要从两个方面对外动力作用可能影响板块构造做出分析,一是利用傅里叶分析证明了太阳辐射变化在构造活动,如洋中脊两侧地貌和火山沉积物中均能够留下记录;二是建立了一个简单的平面力学模型,探究洋流同大陆的力学作用会如何影响大陆运动特征。虽然这一模型忽略了很多因素,定量计算的结果本身并不具有很严格的数据绝对意义。但是这一模型的结果可以证明地球所有板块构造活动中释放的能量低于地球系统每年从太阳辐射中接收的能量,而且模型得到的大陆运动特征同现今实际观测下的运动特征存在一致性,洋流向大陆岩石圈传递的能量同地震活动释放的能量处于同一量级,从侧面可以证明洋流可能对板块构造产生了较大的影响。

 

服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
田嘉铖 季建清
关键词板块构造   太阳辐射   傅里叶分析     
Abstract

The theory of plate tectonics could be seemed as the basic framework for studies on geological structures. The traditional plate tectonics theory suggests that Earth’s lithosphere is broken up into plates and moves above the underlying asthenosphere. Density variations and energy from the decay of radioactive elements drive convections in asthenosphere. However, some recent studies showed that climate changes could directly affect tectonic activities such as orogeny. Furthermore, some studies have found that the variation of solar insolation was recorded in some records of tectonic events. These research suggests that variations of solar insolation could have a first-order effect on plate tectonics, which may make people rethink about the idea that endogeneous energy provide all the energy that plate tectonics need. We analyzed how solar insolation could affect plate tectonics from two aspects. First, we used Fourier analysis to prove that the variations of solar insolation were recorded in tectonic records, like seafloor bathymetry and volcanic sedimentary rocks. Second, we built a simple 2-D mechanical model to analyze whether oceanic currents could affect plates’movements. Although many factors were neglected in calculations, the results could be meaningless. But from these calculations we could prove that solar insolation could provide more energy than those which is released by tectonic events. Also, some results from the model calculations are accord with current plate movements, and the energy transferred to plates are in the same amount with that which was released by earthquakes. This may suggest that ocean currents could potentially affect plate tectonics.

 

Key wordsPlate tectonics   Solar insolation   Fourier analysis   
收稿日期: 2017-08-20;
基金资助:

国家自然科学基金项目(编号:41472175)资助。

通讯作者: 季建清,男,1968年6月生,博士,教授,构造地质学和地球系统科学专业。     E-mail: grsange@pku.edu.cn
引用本文:   
田嘉铖 季建清. 2018, 地球接受太阳辐射能量变化对板块构造影响的估算. 地质科学, 53(4): 1499-1512.
Tian Jiacheng Ji Jianqing. The sppearance and potential mechanism of how variations of solar insolation could affect plate tectonics[J]. Chinese Journal of Geology, 2018, 53(4): 1499-1512.
 
没有本文参考文献
[1] 罗 应 袁方林 金维浚 刘学龙 张昌振 刘欣雨 张 旗 余海军. 全球苦橄岩与太古宙科马提岩对比:全数据模式的启示[J]. 地质科学, 2018, 53(4): 1267-1284.
[2] 何登发. 沉积盆地动力学的研究现状、问题与展望[J]. 地质科学, 2016, 51(2): 309-328.
[3] 郝春艳, 刘绍文, 王华玉, 王良书. 全球大地热流研究进展[J]. 地质科学, 2014, 49(3): 754-770.
[4] 赵宗举1,2 潘懋1 杨海军3 俞广4 徐云俊4. 塔里木盆地中-上奥陶统浊积岩物源分析及大地构造意义[J]. 地质科学, 2010, 45(03): 681-697.
 
版权所有 © 2009-2017 《地质科学》编辑部
地址:北京9825信箱  邮政编码:100029
电话:010-82998109  010-82998115