Abstract

ACOSTA CASTELLANOS, Pedro Mauricio  and  SIERRA APONTE, Lina Xiomara. IDF construction methods' evaluation, from probability distributions and adjustment's parameters. Rev. Fac. ing. [online]. 2013, vol.22, n.35, pp.25-33. ISSN 0121-1129.

The intensity, duration and frequency's curves (IDF) are very important for the hydraulic structures' design. For that reason is important to know these curves construction methodologies. This paper presents some methodologies evaluation, for the IDF curves construction, by applying probability distributions as EVI, Pearson type III, log-Pearson Type III and GEV. The research application place was the department of Boyacá, Colombia. The IDF construction's curves was carried out, by using some pluviograph data. From the evaluation carried out, it was found that the distribution function, with the best performance for this area's study, is the Extreme Value Type I. With similar results for higher return periods, is the Generalized Extreme Value function. Also through the analysis it could rule out the Pearson functions and log-Pearson Type III's applications.

Keywords : IDF Curves; Hydraulic Structures; Probability Distributions; Evi; Pearson Type III; Log-Pearson Type III; GEV; Distribution Function.

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