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利用卫星热红外信息探索现今构造活动,正逐渐发展为可利用的手段之一,应用前景逐渐明朗.然而,要使其从探索性研究走向实用化,需要建立一套能够反映与构造活动有关的热物理指标.不管地表影响因素如何复杂,从能量平衡上看,地球表面作为地球内部和外部空间交换能量的边界,主要受到来自太阳、大气和地下热三者的共同作用.本文以热传导方程为基础,利用地表的能量平衡构建边界条件,通过数学物理方法,首先获取地表温度与太阳、大气和地下热之间的定量关系,建立可反映地下热活动的物理指标——?地热通量差异指数(GFI);其次,通过稳定年周期成份检验了物理指标建立理论方面的正确性;最后,结合GPS的研究成果,对GFI识别构造活动的有效性进行了验证,结果表明GFI对构造活动具有一定的指示性,可作为判别构造是否活动的热物理指标.另外,这种数学推演、物理机制及实际观测相结合的探索思路,对于后继研究也具有一定的参考价值.
Exploration of tectonic activity using satellite’s thermal infrared information is gradually developing into one of the available tools and the application prospect is gradually clear.However, to make it from exploratory research to practicality, we need to establish a set of tools that can reflect the tectonic activity Regardless of the complexity of the influencing factors on the surface of the earth, the surface of the Earth, as the boundary of exchange of energy between the Earth’s interior and external space, is mainly affected by the interaction of the sun, the atmosphere and the underground heat in terms of energy balance.In this paper, Based on the energy balance of the ground surface, the boundary conditions are constructed. By mathematical and physical methods, the quantitative relationship between surface temperature and solar, atmospheric and subsurface heat is first obtained and the physical index reflecting the thermal activity of the underground is established. (GFI). Secondly, we verify the correctness of the theory of physical indicators through the stability of the annual cycle components. Finally, combining with the research results of GPS, we verify the validity of the GFI recognition tectonic activity. The results show that GFI has a certain degree of tectonic activity , Which can be used as a thermophysical indicator to judge whether the structure is active or not. In addition, this mathematical deduction Explore the idea of the physical mechanism of the observed and combining for subsequent studies also have some reference value.