Reliability of rainfall kinetic power–intensity relationships

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Abstract

The rainfall erosivity plays a fundamental role in water soil erosion processes and it can be expressed by its kinetic power. At first in this paper, the raindrop-size distributions measured, in the period June 2006–March 2014, by an optical disdrometer installed at the Department of Agricultural and Forestry Sciences of University of Palermo are aggregated into rainfall intensity classes, having different ranges, and the measured kinetic power values are determined. Measured kinetic power values are initially used for testing the applicability of the kinetic power-rainfall intensity relationships proposed by Wischmeier and Smith (), used in Universal Soil Loss Equation (USLE), Brown and Foster () (RUSLE), and McGregor et al. () (RUSLE2). Then, the reliability of a theoretical relationship for estimating the kinetic power by rainfall intensity and median volume diameter is verified. Finally, using the literature available datasets, corresponding to measurements carried out by different techniques and in different geographical sites, the analysis demonstrated that the rainfall intensity is not sufficient to determine the rainfall kinetic power. On the contrary, the theoretically deduced relationship allows to reproduce adequately the kinetic power of all available datasets, demonstrating that the knowledge of both rainfall intensity and median volume diameter allows a reliable estimate of the rainfall erosivity.
Lingua originaleEnglish
pagine (da-a)1293-1300
Numero di pagine8
RivistaDefault journal
Volume31
Stato di pubblicazionePublished - 2017

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

Cita questo

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title = "Reliability of rainfall kinetic power–intensity relationships",
abstract = "The rainfall erosivity plays a fundamental role in water soil erosion processes and it can be expressed by its kinetic power. At first in this paper, the raindrop-size distributions measured, in the period June 2006–March 2014, by an optical disdrometer installed at the Department of Agricultural and Forestry Sciences of University of Palermo are aggregated into rainfall intensity classes, having different ranges, and the measured kinetic power values are determined. Measured kinetic power values are initially used for testing the applicability of the kinetic power-rainfall intensity relationships proposed by Wischmeier and Smith (), used in Universal Soil Loss Equation (USLE), Brown and Foster () (RUSLE), and McGregor et al. () (RUSLE2). Then, the reliability of a theoretical relationship for estimating the kinetic power by rainfall intensity and median volume diameter is verified. Finally, using the literature available datasets, corresponding to measurements carried out by different techniques and in different geographical sites, the analysis demonstrated that the rainfall intensity is not sufficient to determine the rainfall kinetic power. On the contrary, the theoretically deduced relationship allows to reproduce adequately the kinetic power of all available datasets, demonstrating that the knowledge of both rainfall intensity and median volume diameter allows a reliable estimate of the rainfall erosivity.",
keywords = "Water Science and Technology, median volume diameter, rainfall erosivity, rainfall intensity, rainfall kinetic power",
author = "Serio, {Maria Angela} and Carollo, {Francesco Giuseppe} and Vito Ferro",
year = "2017",
language = "English",
volume = "31",
pages = "1293--1300",
journal = "Default journal",

}

TY - JOUR

T1 - Reliability of rainfall kinetic power–intensity relationships

AU - Serio, Maria Angela

AU - Carollo, Francesco Giuseppe

AU - Ferro, Vito

PY - 2017

Y1 - 2017

N2 - The rainfall erosivity plays a fundamental role in water soil erosion processes and it can be expressed by its kinetic power. At first in this paper, the raindrop-size distributions measured, in the period June 2006–March 2014, by an optical disdrometer installed at the Department of Agricultural and Forestry Sciences of University of Palermo are aggregated into rainfall intensity classes, having different ranges, and the measured kinetic power values are determined. Measured kinetic power values are initially used for testing the applicability of the kinetic power-rainfall intensity relationships proposed by Wischmeier and Smith (), used in Universal Soil Loss Equation (USLE), Brown and Foster () (RUSLE), and McGregor et al. () (RUSLE2). Then, the reliability of a theoretical relationship for estimating the kinetic power by rainfall intensity and median volume diameter is verified. Finally, using the literature available datasets, corresponding to measurements carried out by different techniques and in different geographical sites, the analysis demonstrated that the rainfall intensity is not sufficient to determine the rainfall kinetic power. On the contrary, the theoretically deduced relationship allows to reproduce adequately the kinetic power of all available datasets, demonstrating that the knowledge of both rainfall intensity and median volume diameter allows a reliable estimate of the rainfall erosivity.

AB - The rainfall erosivity plays a fundamental role in water soil erosion processes and it can be expressed by its kinetic power. At first in this paper, the raindrop-size distributions measured, in the period June 2006–March 2014, by an optical disdrometer installed at the Department of Agricultural and Forestry Sciences of University of Palermo are aggregated into rainfall intensity classes, having different ranges, and the measured kinetic power values are determined. Measured kinetic power values are initially used for testing the applicability of the kinetic power-rainfall intensity relationships proposed by Wischmeier and Smith (), used in Universal Soil Loss Equation (USLE), Brown and Foster () (RUSLE), and McGregor et al. () (RUSLE2). Then, the reliability of a theoretical relationship for estimating the kinetic power by rainfall intensity and median volume diameter is verified. Finally, using the literature available datasets, corresponding to measurements carried out by different techniques and in different geographical sites, the analysis demonstrated that the rainfall intensity is not sufficient to determine the rainfall kinetic power. On the contrary, the theoretically deduced relationship allows to reproduce adequately the kinetic power of all available datasets, demonstrating that the knowledge of both rainfall intensity and median volume diameter allows a reliable estimate of the rainfall erosivity.

KW - Water Science and Technology

KW - median volume diameter

KW - rainfall erosivity

KW - rainfall intensity

KW - rainfall kinetic power

UR - http://hdl.handle.net/10447/309894

UR - http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1099-1085

M3 - Article

VL - 31

SP - 1293

EP - 1300

JO - Default journal

JF - Default journal

ER -