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Distributed soil erosion simulation for effective erosion prevention
Author(s) -
Mitas Lubos,
Mitasova Helena
Publication year - 1998
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/97wr03347
Subject(s) - erosion , terrain , colluvium , deposition (geology) , surface runoff , bivariate analysis , sediment transport , environmental science , wepp , hydrology (agriculture) , soil science , geology , sediment , geotechnical engineering , soil conservation , geomorphology , mathematics , soil water , statistics , geography , archaeology , agriculture , ecology , cartography , biology
We present a bivariate model of erosion, sediment transport, and deposition by overland flow, designed for complex terrain, soil, and cover conditions. We use a Green's function Monte Carlo method to solve the underlying continuity equations, leading to improved robustness and implementation efficiency. By deriving the relationship between the terrain shape and erosion/deposition pattern, we clarify the physical interpretation of terrain curvatures and overall importance of the bivariate formulation. We explain the impact of various soil and cover properties by simulating the detachment and transport capacity limited erosion for uniform land use and by predicting the erosion/deposition distribution for a conventional, spatially variable land use at an experimental farm. We compare the results with the observed colluvial deposits and linear erosion features and illustrate the application of the model for improving the effectiveness of erosion prevention measures.