Revisão das isozonas de chuvas intensas do Brasil

Basso, Raviel Eurico; Allasia, Daniel; Tassi, Rutinéia; Pickbrenner, Karine

doi:10.1590/s1413-41522016133691

Cited by 11 publications

(11 citation statements)

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“…The results obtained from the thematic maps are consistent with the work of Basso et al (2016). The authors divided the Brazilian territory into homogeneous areas related to the heavy rainfalls, denominated isozones that consider the regional climatic behavior.…”

Section: Resultssupporting

confidence: 83%

“…The authors divided the Brazilian territory into homogeneous areas related to the heavy rainfalls, denominated isozones that consider the regional climatic behavior. These isozones obtained by Basso et al (2016) have been preserved in the thematic maps created in this work, except for the Continental Isozone that involves a large part of the Amazon, the south of Piauí state and part of Goiás and Mato Grosso do Sul states.…”

Section: Resultsmentioning

confidence: 96%

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Heavy rainfall maps in Brazil to 5 year return period

et al. 2019

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This study created thematic heavy rainfall maps for Brazil, with durations of 5-, 30-, 60- and 120 minutes and 5 years of return period (T). The intensity-duration-frequency (IDF) relationships used were compiled from studies found in the literature (798 locations) and derived for 4411 rainfall gauges available in the Hidroweb information system, totaling 5209 rainfall data collected. To derive IDF relationships, Gumbel's probability distributions were used, with parameters estimated by the method of moments. Distribution adequacy was verified by the Kolmogorov-Smirnov test. Rainfall-intensity values obtained by IDF relationships were spatialized in Geographic Information Systems, allowing elaboration of the thematic maps. Thematic maps enable obtain rainfall intensities for places without rain gauge data and/or precarious time-series data. Therefore, these maps are a great tool for the design of hydraulic structures related to urban and rural micro-drainage.

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 96%

Heavy rainfall maps in Brazil to 5 year return period

et al. 2019

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“…For daily rainfall disaggregation, different methodologies can be used, among which the isozones method (Santos, 2015;Basso et al, 2016), the method of relations between durations and the method of Bell (Silva & Oliveira, 2017). In Brazil, the use of the disaggregation's coefficients presented by CETESB (Companhia de Tecnologia de Saneamento Ambiental, 1986) (Aragão et al, 2013;Pereira et al, 2017) is widely diffused.…”

Section: Introductionmentioning

confidence: 99%

Alternative model of intense rainfall equation obtained from daily rainfall disaggregation

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2020

RBRH

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The objective of this work was to propose an alternative model of IDF equation based on the disaggregation of daily rainfall. Data from the rainfall gauge station code 02649018 of the Brazilian National Water Agency from the period 1968 to 2011 were used. Several extreme event probability distributions were adjusted. Rainfall intensity with a return period of 2 to 100 years and durations of 5 to 1440 minutes were estimated using the relationships between rainfall for different durations. The four coefficients of the traditionally used IDF equation were adjusted, obtaining a sum of squares of deviations equal to 695.1 (mm.h-1)2 and standard error of estimation equal to 2.69 mm.h-1. For the model of the intense rainfall equation proposed, that relates the rain intensity and duration with the maximum daily rainfall, the sum of squares of the deviations was 33.6 (mm.h-1)2 and the standard estimated error was 0.59 mm.h-1. Including the return period in the model, we obtained squares of the deviations of 129.4 (mm.h-1)2, with a standard error of estimation of 1.16 mm.h-1. The models proposed have, besides better estimation accuracy, the advantages of facilitating the updating only by updating the maximum daily precipitation and sub serve the spatial representation.

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“…Obras importantes, como o projeto Executivo de Engenharia para Pavimentação do Acesso ao Observatório de Itacuruba, o Anel Rodoviário Metropolitano de Porto Alegre e a Barragem da Ga-meleira no Piauí foram projetadas utilizando as isozonas de Torrico (1974) (BASSO et al, 2016).…”

Section: Introductionunclassified

Utilização de dados pluviométricos para o desenvolvimento de equações idf da região metropolitana de Fortaleza-CE, Brasil

Batista¹,

Alves²,

Tavares³

2018

RDAE

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Utilização de dados pluviométricos para o desenvolvimento de equações IDF da região metropolitana de Fortaleza-CE, Brasil Use of pluviometric data for the development of IDF equations of the metropolitan region of Fortaleza-CE, Brazil Resumo A compreensão das características das chuvas intensas é fundamental para o dimensionamento de estruturas hidráulicas e o gerenciamento dos recursos hídricos. As equações que relacionam a intensidade, duração e frequência dessas chuvas (Equações IDF) são ferramentas importantes utilizadas na determinação da vazão de projeto. Devido à escassez de pluviógrafos no Brasil, métodos de desagregação da chuva diária medida por pluviômetros foram desenvolvidos como alternativa para geração das equações IDF. Neste trabalho, foi aplicada a metodologia das isozonas, proposta por Torrico (1974), para o desenvolvimento de equações IDF, aplicadas aos 19 municípios da Região Metropolitana de Fortaleza-CE, Brasil. Os resultados foram comparados, para a cidade de Fortaleza, com equações de trabalhos consagradas, baseadas em dados pluviográficos, apresentando ótimos índices de correlação. Palavras-chave: Chuvas intensas. Equações IDF. Isozonas.

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Revisão das isozonas de chuvas intensas do Brasil

Cited by 11 publications

References 0 publications

Heavy rainfall maps in Brazil to 5 year return period

Heavy rainfall maps in Brazil to 5 year return period

Alternative model of intense rainfall equation obtained from daily rainfall disaggregation

Utilização de dados pluviométricos para o desenvolvimento de equações idf da região metropolitana de Fortaleza-CE, Brasil

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