Author(s): Jose Roberto Vicencio Serna, Cayo Leonidas Ramos Taipe

Linked Author(s): Jose Roberto Vicencio Serna, Cayo Leonidas Ramos Taipe

Keywords: Profile storms; Distribution of rainfall; Design hietograms; Peruvian Andes;

Abstract: The central Andes of Peru, is a region with complex topography that presents a high variability in the distribution of rainfall and remains little known. This investigation has analyzed 70 storms with durations between 0.7 and 13 hours, of pluviometric stations located between 8° and 13° south latitude. The distribution of precipitation and time were expressed as accumulated percentages to make valid comparisons between storms following the methodology proposed by Huff in 1967, obtaining dimensionless mass curves which were probabilistically synthesize, next, storm profiles were obtained for each group with probabilities of 10%, 50% and 90% of occurrence and the hietograms corresponding to the selected probability of occurrence were calculated. After that, was selected storm profiles that represent “mean” and “severe” storm, and finally were determined the areas where these storms are most recurrent. The results obtained allow to establish as a reference rainfall of 12 hours. The storm profile representing an average rainfall was obtained, being the most frequent between latitudes -8 ° and -11 °. The "Severe 1" and Severe 2 "storm profiles, which represent the most severe rains, are more recurrent between latitudes -8 ° and -11 ° for the first case and -11 ° and -13 ° for the second case. The results obtained in this research can be used as a reference for the Peruvian central Andes.

DOI: https://doi.org/10.3850/38WC092019-1859

Year: 2019