A stochastic distributed model of soil erosion by overland flow

A - Papers appearing in refereed journals

Wright, A. C. and Webster, R. 1991. A stochastic distributed model of soil erosion by overland flow. Earth Surface Processes and Landforms. 16 (3), pp. 207-226.

AuthorsWright, A. C. and Webster, R.
Abstract

A model has been built to simulate runoff and erosion on slopes of varying form with soil of varying hydraulic conductivity, porosity, storage capacity, and particle size distribution. The model is based on known physical laws and takes into account spatially dependent random variation in the initial conditions of the soil. The rainfall is similarly both random and autocorrelated in space. Detailed results show how runoff is generated as a result of slow conductivity and high water table, how this leads to erosion, the degradation of the land surface, the capture of flow lines, and the development of networks of rills. The last accords well with results from laboratory experiments. Changing the initial conditions produces results that accord with intuition and reality.

KeywordsGeography, Physical; Geosciences, Multidisciplinary
Year of Publication1991
JournalEarth Surface Processes and Landforms
Journal citation16 (3), pp. 207-226
Digital Object Identifier (DOI)doi:10.1002/esp.3290160303
Open accessPublished as non-open access
Funder project or code14
ISSN01979337
PublisherWiley

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