Practical thresholds to distinguish erosive and rill rainfall events

摘要: Abstract In this paper, 1017 rainfall events from 2008 to 2017 are used identify the threshold that produces upland erosion at Masse (central Italy) and Sparacia (southern experimental stations. The classified into three classes: non-erosive, interrill-only rill. values for separating as correctly possible erosive rains (case I) rill II) derived solely hyetograph. Each value is obtained by imposing long-term erosivity of above equal all or only II). performances selective criteria based on 31 variables compared, those most effective in identified. identification best criterion depends aim analysis. It could be required provide greatest accuracy lowest error prediction erosivity. general, results clearly show quantify characteristics patterns, such rain showers (periods continuous rain) deviations records over a truncation level. These especially significant operational estimation identifying trigger process development using This relatively simple field measurements also widely available global scale. potentially usable water models proxies more rarely and/or difficult measure.