01884nam a2200301 a 450000100080000000500110000800800410001910000220006024500950008226000290017730000090020650000180021552011590023365000090139265000180140165000100141965000120142965000210144165000090146265300110147165300130148265300140149565300090150965300270151865300130154565300140155865300100157216670162019-10-15 1977 bl uuuu m 00u1 u #d1 aLOMBARDI NETO, F. aRainfall erosivity - its distribution and relationship with soil loss at Campinas, Brazil. aPurdue: Universityc1977 a53p. aM.Sc. Thesis. aThe rainfall erosion potential for invidual storms was calculated for Campinas, Sao paulo State, Brazil. The erosion potential of a rainstorm is the product of the rainfall energy and the maximum 30-minute intensity of the storm. Over a 22 year period the average annual erosion index computed by addint the EI values of storms greater than 10 millimeter was 690 (values range from 351 to 1410). Monthly and seasonal distributions fo the erosion index were established. The data showed that 62% of the annual erosion potential occurs during the months of December to February. The frequency distribution of the total annual and maximum annual individual storm erosion index was skewed, but the logarithms of the data appeared to be normally distributed. Expected average monthly and annual values of erosion potential may be readily estimated from local rainfall amount records by the equation EI = 6.872 (p 2/p)0.850. A high correlation was found between actual and estimated EI values. The estimates of average erosion losses over an extended period of erosion index values are sufficiently accurate to serve as a sound basis for conservation planning. asoil awater erosion aChuva aErosão aErosão Hídrica aSolo aBrasil aCampinas aErosivity aLoss aPotencial Chuva pesada aRainfall aSao Paulo aSolos