Estimativas de chuvas intensas para o estado de Goiás
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Data
2008-03
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Resumo
The absence of pluviograph stations and of long historical series has induced
engineers to use methodologies that allow them to express the intensity-duration-frequency relation
of critical rainfalls. With the purpose of estimating the height of intense rain associated to a given
duration and frequency, it was developed a computational routine to adjust the parameters of the
Bell’s model to some municipal districts of the Goiás State. For such work it was employed
historical series of daily precipitation and intensity-duration-frequency relations available to some
municipal districts. It was also determined the relation between the precipitation of sixty minutes
and one day duration for two years return period. The information obtained in this work was
regionalized, allowing the generation of thematic aiming to estimate the rainfall height-duration-
frequency relation for the places without registrations. The Bell’s model perfectly adjusted to the
municipal districts that were studied, becoming an interesting alternative concerning to acquiring
the height of intense rain from short series. The reconstruction of Bell’s model based on the
regionalization of the adjusted parameters allowed the expansion of the equations that express the
relation between the maximum precipitation for different durations and the return period with low
values in the standard error of the estimate.
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Modelo de Bell, Drenagem, Escoamento superficial, Bell’s model, Drainage, Runoff
Citação
OLIVEIRA, Luiz F. C. de; ANTONINI, Jorge C. dos A. ; GRIEBELER, Nori P. Estimativas de chuvas intensas para o estado de Goiás. Engenharia Agrícola, Jaboticabal, v. 28, n. 1, p. 22-33, jan./mar. 2008.