Resumo

CAMPOS-ARANDA, D.F.. Description and Application of the Corrected Langbein Test for Regional Homogeneity Verification. Ing. invest. y tecnol. [online]. 2012, vol.13, n.4, pp.411-416. ISSN 2594-0732.

Frequency analysis allows the estimation of design floods, which are used in the hydrological dimensionality of hydraulic structures. In particular, regional frequency analyses are convenient to obtain a higher amount of information, and thus more reliability on the calculated results (in the case of homogeneous regions). Hitherto some errors have been found in the theory and application of the original Langbein Test. Here, a corrected version of this statistic test is described in detail, which uses the reduced variate of Gumbel distribution as estimator. Four numerical applications are exposed briefly and their results are discussed. Based on this discussion, the systematic application of this corrected test is recommended when verifying regional homogeneity due to its simplicity and consistency.

Palavras-chave : Dalrymple test; Gumbel distribution; coefficient of variation; Cv bias; Cv variance.