A clarification and extension of our model of regolith formation on hillslopes

• DOI: 10.1002/esp.4426
• Publication Date: 2018-05-25T01:40:57Z
• Authors: M.I. Lebedeva; S.L. Brantley
• Keywords: Regolith; Denudation

Abstract In this paper we clarify that our weathering model from 2013 did not explicitly describe of soil moving downhill along hillslopes. addition, re‐analyze the role term neglected describes loss regolith mass through mineral dissolution. We derive an equation for by including lateral flow water inside hill. For revised hill model, define a dimensionless parameter allows estimation effect on steady‐state hillslope. This is equal to ratio averaged advective flux dissolved species out rate total denudation. The also yields criterion existence thickness systems experiencing unidirectional advection at constant velocity: ridge, downward ( q y ) must be less than upward movement rock E after normalization small parameter, α. equilibrium aqueous concentration divided reacting in rock. Alternatively, may exist case both vertical and any value erosion if Darcy velocities decrease with depth. Subsurface play essential hillslopes thicknesses. Published 2018. article U.S. Government work public domain USA.