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A stochastic model of soil erosion
Author(s) -
Mossaad Mostafa E.,
Wu Tien H.
Publication year - 1984
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610080302
Subject(s) - rill , ponding , erosion , interval (graph theory) , deposition (geology) , geology , surface roughness , surface finish , surface (topology) , geotechnical engineering , flow (mathematics) , computation , surface runoff , stochastic modelling , mathematics , geometry , geomorphology , engineering , materials science , statistics , algorithm , mechanical engineering , ecology , combinatorics , sediment , drainage , composite material , biology
The erosion model computes the rill and inter‐rill flow over a surface with random roughness, and the erosion caused by this flow. The measured roughness of a surface is analysed and used to generate random surfaces for the simulation process. Computations are carried out over a number of time intervals; the steady state condition is assumed for each interval. Changes in the surface geometry due to erosion during an interval are used to revise the surface for the subsequent interval. The model includes simplified mechanisms to simulate ponding, deposition and failure of side slopes of rills.