Physical basis and potential estimation techniques for soil erosion parameters in the Precipitation-Runoff Modeling System (PRMS)
Water-Resources Investigations Report
84-4218
By: W. P. Carey and Andrew Simon
Links
- Document: Report (pdf)
- Download citation as: RIS | Dublin Core
Abstract
Simulation of upland-soil erosion by the Precipitation-Runoff Modeling System currently requires the user to estimate two rainfall detachment parameters and three hydraulic detachmment paramenters. One rainfall detachment parameter can be estimated from rainfall simulator tests. A reformulation of the rainfall detachment equation allows the second parameter to be computed directly. The three hydraulic detachment parameters consist of one exponent and two coefficients. The initial value of the exponent is generally set equal to 1.5. The two coefficients are functions of the soil 's resistance to erosion and one of the two also accounts for sediment delivery processes not simulated in the model. Initial estimates of these parameters can be derived from other modeling studies or from published empirical relations. (USGS)
Suggested Citation
Carey, W.P., Simon, A., 1984, Physical basis and potential estimation techniques for soil erosion parameters in the Precipitation-Runoff Modeling System (PRMS): U.S. Geological Survey Water-Resources Investigations Report 84-4218, iii, 32 p. :ill. ;28 cm., https://doi.org/10.3133/wri844218.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Physical basis and potential estimation techniques for soil erosion parameters in the Precipitation-Runoff Modeling System (PRMS) |
| Series title | Water-Resources Investigations Report |
| Series number | 84-4218 |
| DOI | 10.3133/wri844218 |
| Year Published | 1984 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, |
| Description | iii, 32 p. :ill. ;28 cm. |