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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >A clarification and extension of our model of regolith formation on hillslopes
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A clarification and extension of our model of regolith formation on hillslopes

机译：我们在Hillslopes上的鲁代岩地层模型的澄清和延伸

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In this paper we clarify that our weathering model from 2013 did not explicitly describe weathering of soil moving downhill along hillslopes. In addition, we re-analyze the role of the term that we neglected that describes loss of regolith mass through mineral dissolution. We derive an equation for this term by including lateral flow of water inside the model hill. For the revised hill model, we define a dimensionless parameter that allows estimation of the effect of lateral flow on the steady-state hillslope. This parameter is equal to the ratio of averaged advective flux of dissolved species out of the hill to the rate of total denudation. The parameter also yields a criterion for the existence of a steady-state regolith thickness for systems experiencing unidirectional advection at a constant velocity: for a ridge, the rate of downward flow of water (q(y)) must be less than the rate of upward movement of rock (E) after normalization by a small parameter, . This parameter is equal to the equilibrium aqueous concentration divided by the concentration of the reacting mineral in the rock. Alternatively, a steady-state may exist for the case of both vertical and lateral flow in a hill for any value of erosion rate if the Darcy velocities decrease with depth. Subsurface flow systems play an essential role in the existence of both steady-state hillslopes and steady-state regolith thicknesses. Published 2018. This article is a U.S. Government work and is in the public domain in the USA.
机译：在本文中，我们澄清了2013年从2013年的风化模型没有明确描述沿着山坡移动下坡的风化。此外，我们还重新分析了我们忽略了通过矿物溶解描述了术语损失的术语的作用。我们通过在模型山内包括横向水流来获得这个术语的等式。对于修订后的Hill模型，我们定义了一种无量纲参数，允许估计横向流量对稳态山坡的影响。该参数等于溶解物种从山上的平均平均平均前平均值与总剥落速率的比率。该参数还产生了在恒定速度下经历单向平流的系统的稳态极孔厚度的标准：对于脊，水向下流动的速率（Q（y））必须小于速率岩石（e）的向上运动通过小参数标准化后，。该参数等于平衡含水浓度除以岩石中反应矿物的浓度。或者，如果达西速度随深度减小，则在山坡中垂直和横向流动的情况下可能存在稳态。地下流量系统在存在稳态山坡和稳态极象厚度的存在中起重要作用。 2018年出版。本文是美国政府工作，并在美国的公共领域。

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