研究论文

ALB上焦耳热场的形态分布特征及环境意义探讨

  • 高晓清 ,
  • G.P.Gregori
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  • 1.中国科学院寒区旱区环境与工程研究所,甘肃 兰州 730000;2.Istitutodi Fisicadell'Atmosfera(CNR),Rome 100039,Italy
高晓清(1966-),男,甘肃靖远人,研究员,主要从事气候变化与预测的研究.E-mail:xqgao@ns.lzb.ac.cn

收稿日期: 2001-09-04

  修回日期: 2002-03-04

  网络出版日期: 2002-08-01

基金资助

中国科学院知识创新工程重大项目“西部生态环境演变规律与水土资源可持续利用研究”(编号:KZCX1-10-02);国家重点研究发展规划项目“青藏高原形成演化及其环境、资源效应”(编号:G1998040800)联合资助.

THE DISTRIBUTION PATTERN OF JOULE HEAT ON ALB AND ITS ENVIRONMENTAL SIGNIFICANCE

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  • 1.Cold and Arid Regions Environmental and Engineering Research Institute, CAS,730000  Lanzhou;2.Istituto di Fisica dell' Atmosfera(CNR), Rome 100039, Italy

Received date: 2001-09-04

  Revised date: 2002-03-04

  Online published: 2002-08-01

摘要

利用地磁场MAGSAT(1980)模型计算了软流圈-岩石圈边界(ALB)上的焦耳热场,分析了它的形态分布特征,并探讨了其环境意义。发现ALB上焦耳热高值中心的分布与全球地热带和火山的分布有较好的一致性,焦耳热的水平尺度与地热涡的水平尺度、我国大陆上多雨带的间距及降水量和气温的高相关带的间距相当。低纬地带ALB上焦耳热中心的分布与全球平均年最大降水量中心的分布特征有很好的对应。另外,ALB上全球最大焦耳热中心位于我国青藏高原东南部的热点上。最后,讨论了地磁与气候的可能联系。

本文引用格式

高晓清 , G.P.Gregori . ALB上焦耳热场的形态分布特征及环境意义探讨[J]. 地球科学进展, 2002 , 17(4) : 487 -490 . DOI: 10.11867/j.issn.1001-8166.2002.04.0487

Abstract

It is well known that the Earth is a self heating planet by its physical and chemical processes inside. From physics, it is a geodynamo, and the electric current exists in it. By Joule rule, this current can produce Joule heat for the resistance of the material in it. The Joule heat distribution field on Asthenosphere-Lithosphere Boundary(ALB) has been obtained by using MAGSAT model. The distribution pattern was analyzed, and its environmental significance was discussed. It is found that the distribution of high value centers of Joule heat on ALB have good corresponding to the distributions of global geothermal zones and volcanoes, and the horizontal scale of Joule heat is very comparative to the horizontal scale of geothermal vortex, to the space distance between rainy belts in China, and to the space distance between the high correlation coefficient belts of precipitation and temperature The centers of Joule heat match the maximum annual precipitation centers in globe very well. And it is also found that the highest center of Joule heat in globe locates under Tibetan Plateau. These phenomena are of very important to understand the Earth as a whole, and the interactions between spheres. Finally, the possible relation between geomagnetic field and climate change was discussed.

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