Determination of Intensity-Duration-Frequency Equations for Pernambuco State Mesoregions Through Disaggregation Method (PAP014808)
Larissa Virginia da Silva Ribas, Artur Paiva Coutinho, Antônio Celso Dantas Antonino, Tássia dos Anjos Tenório de Melo, Jaime Joaquim da Silva Pereira Cabral, Suzana Maria Gico Lima Montenegro
The knowledge of high intensity rainfall patterns is extremely important due to its application in hydraulic engineering projects. The difficulty in obtaining intensity-duration-frequency equations through pluviographs because of the poor density of pluviographs network has led engineers to use other methods for determining these equations from pluviometric records. In this paper were used time series from 8 municipalities of mesoregions of Pernambuco State to determine intensity-duration-frequency equations using rainfall disaggregation method. The goodness of fit Gumbel distribution was confirmed by the Kolmogorov-Smirnov test with a significance level of 5%. The generated equations showed reasonable fitting with R² ranging from 97,5% to 97,9% for the rainfall disaggregation method.