Physically-based distributed soil erosion and sediment yield model (DREAM) for simulating individual storm events

Simulating the spatio-temporal dynamics of soil erosion, deposition, and yield using a coupled sediment dynamics and 3D distributed hydrologic model

“…Given that the detachment, transport, and deposition of soil are dominantly influenced by the velocity and volume of overland flow (Julien and Simons, 1985), which in turn may be influenced by antecedent soil moisture conditions (Legates et al, 2011;Penna et al, 2011;Jost et al, 2012;Chen et al, 2014;Hueso-Gonz alez et al, 2015), subsurface heterogeneity (Lewis et al, 2012;Ghimire et al, 2013;Orchard et al, 2013;Zimmermann et al, 2013;Niu et al, 2014;Tao and Barros, 2014), and groundwater distribution (Kumar et al, 2009;Miguez-Macho and Fan, 2012;Rosenberg et al, 2013;Safeeq et al, 2014;von Freyberg et al, 2015), it is important to consider the coupled impacts of antecedent hydrologic states (soil moisture and groundwater distribution) and subsurface hydrogeologic properties on sediment generation and yield. Failing to do so may limit the applicability of these models to a few events (Hessel et al, 2006;Mati et al, 2006;Ramsankaran et al, 2013) or to regimes where the dynamic role of antecedent conditions and subsurface heterogeneity on erosion are not large enough. Heppner et al (2006) made significant headway in this direction by coupling sediment processes within an integrated hydrologic model, InHM (VanderKwaak and Loague, 2001).…”

Availability and performance of sediment detachment and transport functions for overland flow conditions

“…0.004 m s -1 . At present, this function is being used in the EUROSEM model (Morgan et al, 1998a;b) for rill erosion and in the LISEM (De Roo et al, 1996) and DREAM (Ramsankaran et al, 2013) models for rill and interrill erosion.…”

“…This approach is also used in the LISEM (De Roo et al, 1996) and DREAM (Ramsankaran et al, 2013) soil erosion models. Suitability of Soil Detachment Functions Among the available detachment rate and detachment capacity functions, only the performance of existing shear stress based detachment functions has been evaluated by Zhu et al (2001).…”

“…Examples are CREAMS (Knisel, 1980), KYERMO (Hirschi and Barfield, 1988a,b), PRORILL (Lewis et al, 1994a,b), KINEROS2 (Smith et al, 1995), LISEM (De Roo et al, 1996), RUSLE (Renard et al, 1997), EUROSEM (Morgan et al, 1998a,b), EGEM (Woodward, 1999), GLEAMS (Knisel and Davis, 2000), WEPP (Flanagan et al, 2001), MUSLT (Sadeghi et al, 2013), and DREAM (Ramsankaran et al, 2013). Some of those models are fully empirical (e.g.…”

“…Those empirical and physically-based models have been applied in catchment-scale erosion studies with varying degrees of success (e.g. Finney et al, 1993;Summer and Walling, 2002;Larsen and MacDonald, 2007;Kim et al, 2007;Grismer, 2012;Wieprecht et al, 2013;Ramsankaran et al, 2013).…”