Effects of spatial resolution of terrain models on modelled  discharge and soil loss in Oaxaca, Mexico

Naranjo, Sergio; Rodrigues Jr., Francelino A.; Cadisch, Georg; Lopez-Ridaura, Santiago; Fuentes Ponce, Mariela; Marohn, Carsten

doi:https://doi.org/10.5194/hess-25-5561-2021

Articles | Volume 25, issue 10

https://doi.org/10.5194/hess-25-5561-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-25-5561-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 10

Research article

|

25 Oct 2021

Research article |

| 25 Oct 2021

Effects of spatial resolution of terrain models on modelled discharge and soil loss in Oaxaca, Mexico

Sergio Naranjo, Francelino A. Rodrigues Jr., Georg Cadisch, Santiago Lopez-Ridaura, Mariela Fuentes Ponce, and Carsten Marohn

Data sets

Effects of spatial resolution of terrain models on modelled discharge and soil loss in Oaxaca, Mexico: Code and Data S. Naranjo, F. Rodrigues, and M. Fuentes https://hdl.handle.net/11529/10548623

Short summary

We integrate a spatially explicit soil erosion model with plot- and watershed-scale characterization and high-resolution drone imagery to assess the effect of spatial resolution digital terrain models (DTMs) on discharge and soil loss. Results showed reduction in slope due to resampling down of DTM. Higher resolution translates to higher slope, denser fluvial system, and extremer values of soil loss, reducing concentration time and increasing soil loss at the outlet. The best resolution was 4 m.