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Poster De Conférence Année : 2017

Assessing the Variability of Ephemeral Gully Erosion using High-Frequency Monitoring and GIS Modeling

Résumé

• Total Sediment Yield (SY) = 16.10 3 kg; cumulated rainfall = 827.1 mm • Maximum SSC observed in May (5g l-1) as maximum rainfall intensities (76 mm h-1). • November: one event contributed to 45% of the annual SY. • Q-SSC relationships corresponds to clockwise (68%) and complex hysteresis (32%). • Clockwise hysteresis: rapid re-suspension and transport of sediment previously deposited in the gullies. • Complex hysteresis: additional peaks  movement of other sources, more distant and probably coming from the fields.
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Dates et versions

hal-01657889 , version 1 (07-12-2017)

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  • HAL Id : hal-01657889 , version 1

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Edouard Patault, Claire Alary, Christine Franke, Arnaud Gauthier, Nor-Edine Abriakc. Assessing the Variability of Ephemeral Gully Erosion using High-Frequency Monitoring and GIS Modeling: Case study in a fully cultivated catchment (Pommeroye, Northern France). 2017 Fall Meeting, AGU, Dec 2017, New Orleans, United States. , 2017. ⟨hal-01657889⟩
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