We develop a simple stochastic theory for erosion and sediment transport, based on the Poisson pulse rainfall model, in order to analyze how variability in rainfall and runoff influences drainage basin evolution. Two cases are considered: sediment transport by runoff in rills and channels and particle detachment from bedrock or cohesive soils. Analytical and numerical results show that under so...

introduction: soil erosion by water is one of the most important processes of land degradation, especially in semi-arid areas. among different types of the soil erosion, gully erosion accounts as one of the most critical processes which can cause soil destruction, changes in landscape and water resources filling of reservoir of dams,decrease in water transport capacity of rivers and agricultura...

Leading-edge erosion at wind turbine blades cause a loss in profit for farm owners, particular offshore. The characterization of the rain environmental load is based on long-term rate and speed observations 10-minute resolutions coastal stations around North Sea, Baltic inland. It assumed that an IEA Wind 15 MW installed each station. leading-edge lifetime found to increase from South along Ger...

Recently, in the Auerswald et al. (2015) comment on "Rainfall erosivity in Europe", 5 criticisms were addressed: i) the neglect of seasonal erosion indices, ii) the neglect of published studies and data, iii) the low temporal resolution of the data, especially of the maximum rain intensity, iv) the use of precipitation data instead of rain data and the subsequent deviation of the R-factor in Ge...

a Laboratoire de technologie écologique, Institut d’ingénierie de l’environnement, Faculté de l’environnement naturel, architectural et construit (ENAC), Station 2, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland. Ph. +41 (21) 693-8073; +41 (21) 693-5576; +41 (21) 693-5919; Fax. +41 (21) 693-8035. Email addresses: [email protected], [email protected], aless...

[1] We explored the dependence of experimental bedrock erosion rate on shear stress, bed load sediment flux, alluvial bed cover, and evolving channel morphology. We isolated these variables experimentally by systematically varying gravel sediment flux Qs and water discharge Qw in a laboratory flume, gradually abrading weak concrete “bedrock.” All else held constant, we found that (1) erosion ra...

in this research introduced the lapsus model as a runoff, erosion and sediment model in iran. this model for the first time has operatedin iran at kakhk paired catchment of gonabad. lapsus model is a landscape evolution model that can estimate the runoff, erosion and sediment at the four stage include: calculate the effective rainfall, runoff routing, calculate the capacity of sediment transpor...

The area I refer to is a bit of country lying between two rivers with my headquarters as the centre. The country is fertile at both ends-, being fed by rivers. But the affected area is arid, the climate is hot and dry, and the soil consists mainly of conker and to a less extent of black clay and red earth. It is fed by rain and the people draw their water supply almost exclusively from rain-fed...

Abstract The flood disaster that occurred in Pekalongan district February 2021 was caused by the high intensity of rain for one week with rainfall >50 mm/day and ebb flow sea water due to tides reaching 0.9-1.1 meters. Other problems flooding are change land use, subsidence, waste, erosion-sedimentation, as well operation maintenance factors. Losses floods cause material building losses traf...