Abstract

Temperature distribution in the upper mantle under the continent and in the lower mantle was found. In the continental lithosphere the solution was obtained in the approximation of conductive heat transfer with internal heat sources in the continental crust. The temperature profiles over the thickness of the upper and lower mantle were obtained using the results of experimental and theoretical modeling of free convective heat transfer in a horizontal layer of a viscous fluid heated from below and cooled from above. The model of thermal and hydrodynamic structure of the subduction zone is presented, including a scheme of free-convective flows in the asthenospheric layer and layer C. The temperature profiles in the subducting lithospheric plate and in the continental limb of the subduction zone are presented. The heat flow due to friction at the boundary of the subducting plate and the continental limb has a significant effect on heat transfer and the formation of the temperature field in the subduction zone. The temperature level in the crustal layer of a subducting oceanic plate indicates the absence of melting in this layer.

中文翻译：

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俯冲带大陆肢下和俯冲板块内地幔温度分布

摘要

发现了大陆下的上地幔和下地幔的温度分布。在大陆岩石圈中，解决方案是在大陆地壳内部热源的传导热传递近似中获得的。利用从下方加热并从上方冷却的粘性流体的水平层中的自由对流传热的实验和理论模型的结果，获得了上地幔和下地幔厚度的温度分布。提出了俯冲带的热力和流体动力结构模型，包括软流圈层和C层中的自由对流方案. 介绍了俯冲岩石圈板块和俯冲带大陆肢的温度剖面。俯冲板块与大陆翼边界摩擦产生的热流对俯冲带的热传递和温度场的形成有重要影响。俯冲海洋板块地壳层的温度水平表明该层没有融化。