A Mathematical Model of Soil Erosion and Deposition Processes: I. Theory for a Plane Land Element

Water erosion is considered to be the most important factor behind the degradation of agricultural land. Many methods of measuring soil erosion processes, using mathematical models, have been developed in recent years. The most widespread of these, USLE, and its modifications have been used as the basis for new erosion models. Two such models, USPED (Mitášová et al. 1996) and WaTEM/SEDEM (Van Rompaey et al. 2001; Van Oost et al. 2000; Verstraeten et al. 2002), have been utilized to study erosion and deposition processes in the experimental rural catchment of Černičí. River sediment transport is also calculated using the WaTEM/ SEDEM model. The results are discussed with results from USLE and a field survey. The article also presents brief instructions for implementing the models in a GIS environment.

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Mapping soil erosion and accumulation with the fallout isotope caesium-137

Soil Research ◽

10.1071/sr9830373 ◽

1983 ◽

Vol 21 (4) ◽

pp. 373 ◽

Cited By ~ 64

Author(s):

ME Longmore ◽

BM O'Leary ◽

CW Rose ◽

AL Chandica

Keyword(s):

Soil Erosion ◽

Mathematical Models ◽

Relative Intensity ◽

Erosion And Deposition ◽

Soil Redistribution ◽

Quantitative Estimates ◽

Deposition Processes

The fallout isotope 137Cs has been used to trace the redistribution of soil in a cultivated paddock, in an upland catchment on the Darling Downs. The areal concentrations (mCi km-2) have been used to construct a caesiographic map which illustrates the areas of 137Cs depletion and build-up and the major areas of soil erosion and deposition, respectively, in the paddock. These areas have been graded on the basis of apparent relative intensity of erosion or deposition. Therefore, this method allows retrospective, quantitative estimates to be made of the extent and degree of soil redistribution within the last 3 decades. In addition the 137Cs results will be used to test mathematical models of erosion/deposition processes.

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Redistribution of caesium-137 by erosion and deposition on an Australian soil

Soil Research ◽

10.1071/sr9800119 ◽

1980 ◽

Vol 18 (2) ◽

pp. 119 ◽

Cited By ~ 34

Author(s):

ME McCallan ◽

BM O'Leary ◽

CW Rose

Keyword(s):

Soil Erosion ◽

Mathematical Models ◽

137Cs Activity ◽

Soil Cores ◽

Accumulation Rates ◽

Erosion And Deposition ◽

Nuclear Fallout ◽

Deposition Processes ◽

137Cs Fallout ◽

Australian Soil

Caesium-137, a nuclear fallout product which is carried down to the ground by rainfall and becomes tightly adsorbed to soil particles, is being used to study soil erosion and accumulation. The measurement of 137Cs activity in soil cores in an upland catchment on the Darling Downs has revealed a vertical and areal distribution of this isotope which is in general agreement with expectations based on the topography, the observed erosion and deposition sites, the variation in 137Cs fallout through time, and hypotheses of 137Cs redistribution. Such information may allow the development of a practical technique for estimating soil erosion and accumulation rates using this isotope; it also allows testing of mathematical models of erosion/deposition processes.

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Slope curvature influence on soil erosion and deposition processes

Water Resources Research ◽

10.1029/1999wr900157 ◽

2000 ◽

Vol 36 (2) ◽

pp. 607-617 ◽

Cited By ~ 32

Author(s):

C. Di Stefano ◽

V. Ferro ◽

P. Porto ◽

G. Tusa

Keyword(s):

Soil Erosion ◽

Erosion And Deposition ◽

Deposition Processes

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Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management

Journal of Visualized Experiments ◽

10.3791/56064 ◽

2017 ◽

Author(s):

Robert H. Erskine ◽

Lucretia A. Sherrod ◽

Timothy R. Green

Keyword(s):

Soil Erosion ◽

Agricultural Management ◽

Erosion And Deposition ◽

Soil Carbonate

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Organic near-bed fluid and particulate transport in combined sewers

Water Science & Technology ◽

10.2166/wst.1995.0201 ◽

1995 ◽

Vol 31 (7) ◽

pp. 61-68 ◽

Cited By ~ 3

Author(s):

E. Ristenpart ◽

R. M. Ashley ◽

M. Uhl

Keyword(s):

Bed Load ◽

Erosion And Deposition ◽

Sediment Bed ◽

Solids Transport ◽

Particulate Transport ◽

Sediment Deposits ◽

Dense Fluid ◽

Deposition Processes ◽

Continuous Field ◽

Heterogeneity Of Solids

Studies in Germany, Belgium, France and Scotland have revealed that there are significant solids transport gradients in the depth of foul and combined sewage flows. Continuous field observations of changes in depths of sediment deposits in combined sewers have also indicated that there is an interaction between the erosion and deposition processes and changes in the mass transport of solids in regions in the overlying flow. A fuller understanding of the interactive phenomena is essential for both sewer sediment management and the minimization of associated pollution from wash-out of solids via CSOs. The paper presents results from the detailed studies in Hildesheim, Germany and those carried out in Dundee, Scotland, investigating the heterogeneity of solids movement with regard to gross solids, erosion of sewer sediments and their interactions with the suspended transport phases and the layer of very dense fluid found to be transported under certain circumstances, near the sediment bed or sewer invert (traditionally called ‘bed-load’).

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