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

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Final revised paper (published on 25 Oct 2021)
Preprint (discussion started on 28 Dec 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review for hess-2020-641', Paolo Paron, 31 May 2021
- SC1: 'Reply on RC1', Carsten Marohn, 24 Jun 2021
- AC2: 'Reply on RC1', Sergio Naranjo, 29 Jul 2021
RC2: 'Cooment on - Effects of spatial resolution of terrain models on modelled discharge and soil loss in Oaxaca, Mexico', Anonymous Referee #2, 07 Jul 2021
- AC1: 'Reply on RC2', Sergio Naranjo, 29 Jul 2021

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (further review by editor) (09 Aug 2021) by Graham Jewitt

AR by Sergio Naranjo on behalf of the Authors (12 Aug 2021) Author's response Author's tracked changes Manuscript

ED: Publish subject to technical corrections (17 Aug 2021) by Graham Jewitt

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.