Articles | Volume 8, issue 1
Hydrol. Earth Syst. Sci., 8, 103–107, 2004
https://doi.org/10.5194/hess-8-103-2004
Hydrol. Earth Syst. Sci., 8, 103–107, 2004
https://doi.org/10.5194/hess-8-103-2004

  29 Feb 2004

29 Feb 2004

Estimating RUSLE’s rainfall factor in the part of Italy with a Mediterranean rainfall regime

N. Diodato N. Diodato
  • Monte Pino Naturalistic Observatory, Contrada Monte Pino, 82100 Benevento, Italy
  • E-mail: nazdiod@tin.it

Abstract. The computation of the erosion index (EI), which is basic to the determination of the rainfall-runoff erosivity factor R 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(r2 = 0.867) involving annual erosion index (EI30-annual) 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.

Keywords: erosion index, rainfall, erosivity, Revised Universal Soil Loss Equation