Estimating RUSLE’s rainfall factor in the part of Italy with a Mediterranean rainfall regime
The computation of the erosion index (<i>EI</i>), which is basic to the determination of the rainfall-runoff erosivity factor <i>R</i> of the Revised Universal Soil Loss Equation (RUSLE), is tedious and time-consuming and requires a continuous record of rainfall intensi...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2004-01-01
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| Series: | Hydrology and Earth System Sciences |
| Online Access: | http://www.hydrol-earth-syst-sci.net/8/103/2004/hess-8-103-2004.pdf |
| Summary: | The computation of the erosion index (<i>EI</i>), which is basic to the determination of the rainfall-runoff erosivity factor <i>R</i> of the Revised Universal Soil Loss Equation (RUSLE), is tedious and time-consuming and requires a continuous record of rainfall intensity. In this study, a power equation(r<sup>2</sup> = 0.867) involving annual erosion index (<i>EI</i><sub>30-annual</sub>) in the Mediterranean part of Italy is obtained. Data from 12 raingauge stations are used to derive and then test a regional relationship for estimating the erosion index from only three rainfall parameters. Erosivity rainfall data derived from 5 additional stations are used for validation and critical examination. The empirical procedures give results which compare satisfactorily with relationships calibrated elsewhere.</p> <p style='line-height: 20px;'><b>Keywords: </b>erosion index, rainfall, erosivity, Revised Universal Soil Loss Equation |
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| ISSN: | 1027-5606 1607-7938 |