Articles | Volume 8, issue 2
Earth Surf. Dynam., 8, 447–470, 2020
https://doi.org/10.5194/esurf-8-447-2020
Earth Surf. Dynam., 8, 447–470, 2020
https://doi.org/10.5194/esurf-8-447-2020

Research article 03 Jun 2020

Research article | 03 Jun 2020

Parameterization of river incision models requires accounting for environmental heterogeneity: insights from the tropical Andes

Benjamin Campforts et al.

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In this contribution, we explore the spatial determinants of bedrock river incision in the tropical Andes. The model results illustrate the problem of confounding between climatic and lithological variables, such as rock strength. Incorporating rock strength explicitly into river incision models strongly improves the explanatory power of all tested models and enables us to clarify the role of rainfall variability in controlling river incision rates.