Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 3, issue 4
Articles | Volume 3, issue 4
https://doi.org/10.5194/esurf-3-483-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/esurf-3-483-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 3, issue 4
Research article
 | 
16 Oct 2015
Research article |  | 16 Oct 2015

Topographic roughness as a signature of the emergence of bedrock in eroding landscapes

D. T. Milodowski, S. M. Mudd, and E. T. A. Mitchard

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Short summary
Rock is exposed at the Earth surface when erosion rates locally exceed rates of soil production. This transition is marked by a diagnostic increase in topographic roughness, which we demonstrate can be a powerful indicator of the location of rock outcrop in a landscape. Using this to explore how hillslopes in two landscapes respond to increasing erosion rates, we find that the transition from soil-mantled to bedrock hillslopes is patchy and spatially heterogeneous.
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