A Comparative Study of Rainfall Erosivity Estimation for South Italy and Southeastern Australia

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Title A Comparative Study of Rainfall Erosivity Estimation for South Italy and Southeastern Australia
Author Yu, Bofu; Ferro, V.; Porto, P.
Journal Name Hydrological Sciences Journal
Year Published 1999
Place of publication UK
Publisher IAHS Press
Abstract In this paper, using Sicilian and Australian rainfall intensity data, a comparison between different estimators (modified Fournier index F, FF index) of the rainfall erosivity factor in the USLE was made. The relationship between the modified Fournier index and the mean annual rainfall, P, was theoretically derived. The K constant, linking the FF index and P, and its cumulative distribution function (CDF) were used to establish hydrological similitude among different geographical regions of southern Italy and southeastern Australia. To predict the erosion risk for an event of given average recurrence interval, the probability distribution of the annual value F a.j of the Arnoldus index was studied. In order to establish the theoretical CDF to use as a regional parent distribution, the descriptive ability of LN2 and EV1 distributions was studied by both an at-site analysis and a hierarchical regional procedure. The analysis showed that for each sub-region of southern Italy and southeastern Australia, characterized by a constant coefficient of variation, the erosion risk index is constant.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1080/02626669909492199
Volume 44(1)
Page from 3
Page to 24
ISSN 0262-6667
Date Accessioned 2000-01-01
Language en_AU
URI http://hdl.handle.net/10072/31142
Publication Type Article in Scholarly Refereed Journal
Publication Type Code c1

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