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- W2011258314 abstract "Rainfall erosivity factors were measured during 1980 and 1981 at Ibadan, Nigeria for two rainy seasons, Season 1 from late March to late July and Season 2 from late August to early November. Rainfall characteristics monitored included drop size distribution, kinetic energy, and momentum using a DISTROMET. Additional factors/characteristics monitored were rainfall amount and intensity using a daily recording rain gauge, and sand splash using an Ellison Cup technique. Rainstorms received in March, June and September had a relatively bigger median drop size (D50) ranging from 2.75 to 3.00 mm. Similarly rains in May and September had high kinetic energy of 2000–2500 J/m2, and high momentum of 300–450 kg/m/s. Kinetic energy of rainstorms was related to D50 (r=0.63), 5 min maximum intensity (r=0.79), 30 min maximum intensity, I30 (r=0.83), and rainfall amount (r=0.98). Therefore, rainfall erosivity may be estimated using data of rainfall amount from the daily recording rain gauge. Regression equations proposed for computing kinetic energy (J/m2) from rainfall amount (A in mm) differ among seasons, and need to be validated for different ecoregions of west Africa. The proposed equation is KE=25.80 A+54.58 for Season 1 and KE=29.86 A−43.18 for Season 2." @default.
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- W2011258314 date "1998-09-01" @default.
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- W2011258314 title "Drop size distribution and energy load of rain storms at Ibadan, western Nigeria" @default.
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- W2011258314 doi "https://doi.org/10.1016/s0167-1987(98)00109-3" @default.
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