地磁场与气候变化关系的新探索

对地磁场与气候变化的统计研究早已表明，二者有很好的相关关系。本文的目的是对它们的关系给出一种可能的物理解释。利用近600年的地磁场模型资料和全球平均温度序列分析了两者变化的关系，发现它们有很好的对应，且地磁场变化超前于全球气温变化。从地磁场的变化来看，21世纪初全球变暖的趋势应该减缓。文中对地表浅层热场（地热带、火山和地温场）的分布特征与地球内部软流圈－岩石圈边界上焦耳热场的分布特征进行了对比分析。结果表明，地表浅层热场与地球深层焦耳热的分布有很好的对应关系，这可能暗示地表浅层热场是地球深层焦耳热的反映，地磁场通过焦耳热的不断释旋影响气候变化。

New Evidences for the Relationship between Climate Change and Geomagnetic Field

It is well known that there is good relationship between climate change and geomagnetic field. In this paper we attempt to describe a possible physical explanation. The geomagnetic field data and global mean temperature in the past 600 years have been used for analyzing the relationship between them in this paper. Results show that there is a good correspondence between them, and the change of geomagnetic field is prior to the change of global temperature. From the trend of geomagnetic field change, it seems that the global warming would slow down in the early part of 21 century. The comparison analysis between the thermal field(geothermal belts, volcano distribution and soil temperature field) in the shallow layer of the ground and Joule heat field on Asthenosphere Lithosphere Boundary(ALB) shows that they matches each other very well in spatial characteristics. It implies very possible that the thermal field in the shallow layer is the reflection of the Joule heat field on ALB, and geomagnetic field could influence climate change through the release of Joule heat.