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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Mountain ranges, climate and weathering. Do orogens strengthen or weaken the silicate weathering carbon sink?
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Mountain ranges, climate and weathering. Do orogens strengthen or weaken the silicate weathering carbon sink?

机译：山脉，气候和风化。 ORIGENS加强或削弱硅酸盐腐蚀碳水槽吗？

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摘要

The role of mountains in the geological evolution of the carbon cycle has been intensively debated for the last decades. Mountains are thought to increase the local physical erosion, which in turns promotes silicate weathering, organic carbon transport and burial, and release of sulfuric acid by dissolution of sulfides. In this contribution, we explore the impact of mountain ranges on silicate weathering. Mountains modify the global pattern of atmospheric circulation as well as the local erosion conditions. Using an IPCC-class climate model, we first estimate the climatic impact of mountains by comparing the present day climate with the climate when all the continents are assumed to be flat. We then use these climate output to calculate weathering changes when mountains are present or absent, using standard expression for physical erosion and a 1D vertical model for rock weathering. We found that large-scale climate changes and enhanced rock supply by erosion due to mountain uplift have opposite effect, with similar orders of magnitude.
机译：山区在碳周期地质演变中的作用在过去几十年中一直在争论。山被认为增加局部物理侵蚀，这又促进了硅酸盐风化，有机碳传输和埋葬，并通过硫化物溶解来释放硫酸。在这一贡献中，我们探讨了山脉对硅酸盐风化的影响。山脉修改了大气循环的全球模式以及局部侵蚀条件。使用IPCC级气候模型，我们首先通过将当今气候与气候与气候相比，估计山脉的气候冲击。然后，我们使用这些气候输出来计算当存在或不存在山脉时的风化变化，使用标准表达物体侵蚀和岩石风化的1D垂直模型。我们发现，由于山地隆起，大规模的气候变化和增强的岩石供应具有相反的效果，具有相似的数量级。

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