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
Received date: 2001-09-04
Revised date: 2002-03-04
Online published: 2002-08-01
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
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.
Key words： Geomagnetic field; Joule heat; Geothermal vortex; Climate change.
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