Articles | Volume 25, issue 8
Hydrol. Earth Syst. Sci., 25, 4473–4494, 2021
https://doi.org/10.5194/hess-25-4473-2021
Hydrol. Earth Syst. Sci., 25, 4473–4494, 2021
https://doi.org/10.5194/hess-25-4473-2021
Research article
19 Aug 2021
Research article | 19 Aug 2021

Spatiotemporal changes in flow hydraulic characteristics and soil loss during gully headcut erosion under controlled conditions

Mingming Guo et al.

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Short summary
Gully headcut erosion is always a difficult issue in soil erosion, which hinders the revelation of gully erosion mechanisms and the establishment of a gully erosion model. This study clarified the spatiotemporal changes in flow properties, energy consumption, and soil loss, confirming that gully head consumed the most of flow energy (78 %) and can contribute 89 % of total soil loss. Critical energy consumption initiating soil erosion of the upstream area, gully head, and gully bed is confirmed.