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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