RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447

Detalhes bibliográficos
Autor(a) principal: Campos, Alcinei Ribeiro
Data de Publicação: 2015
Outros Autores: Santos, Glenio Guimarães, Anjos, João Carlos Rocha dos, Stefanoski, Diane Cristina, Moraes, Jaurene Moura Fé
Tipo de documento: Artigo
Idioma: por
Título da fonte: Engenharia na Agricultura
Texto Completo: https://periodicos.ufv.br/reveng/article/view/541
Resumo: Studies of spatial and temporal distribution of rainfall are of extreme importance for security in planning and execution of hydraulic projects and environmental conservation, so work to determine the intensity-duration-frequency curves of rainfall are indispensable for the planning and construction of hydraulic works. Currently the state of Maranhão provides little information related to the curves of intensity-duration-frequency of rainfall, so studies are necessary to develop the curves for its various municipalities. In this context the objective of this work was to determine the parameters of the intensity-duration-frequency equation for 163 rainfall stations located in the state of Maranhão. Data were obtained from the National Water Agency database. For adjustment of intensity-duration-frequency curves the rainfall breakdown method was used, considering the probabilistic model of Gumbel for estimating the maximum values in different time durations and return period. Upon acquisition of these values the parameters K, a, b and c of the intensity-duration-frequency curves were adjusted by the least squares method. The parameters K, a, b and c of the intensity-duration-frequency curves show good adjust, with 99.7% of curves presenting r2 greater than 0.98.
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spelling RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447EQUAÇÕES DE INTENSIDADE DE CHUVAS PARA O ESTADO DO MARANHÃO - DOI: 10.13083/1414-3984/reveng.v23n5p435-447Chuvas extremasmodelos probabilísticosperíodo de retornoStudies of spatial and temporal distribution of rainfall are of extreme importance for security in planning and execution of hydraulic projects and environmental conservation, so work to determine the intensity-duration-frequency curves of rainfall are indispensable for the planning and construction of hydraulic works. Currently the state of Maranhão provides little information related to the curves of intensity-duration-frequency of rainfall, so studies are necessary to develop the curves for its various municipalities. In this context the objective of this work was to determine the parameters of the intensity-duration-frequency equation for 163 rainfall stations located in the state of Maranhão. Data were obtained from the National Water Agency database. For adjustment of intensity-duration-frequency curves the rainfall breakdown method was used, considering the probabilistic model of Gumbel for estimating the maximum values in different time durations and return period. Upon acquisition of these values the parameters K, a, b and c of the intensity-duration-frequency curves were adjusted by the least squares method. The parameters K, a, b and c of the intensity-duration-frequency curves show good adjust, with 99.7% of curves presenting r2 greater than 0.98.Estudos da distribuição espacial e temporal das chuvas, com determinação das curvas de intensidade-duraçãofrequência, são de extrema importância para segurança no planejamento e dimensionamento de projetos hidráulicos e conservação do meio ambiente. . Atualmente, o estado do Maranhão disponibiliza de poucas informações relacionadas às curvas de intensidade-duração-frequência das chuvas, necessárias para caracterização dessa variável hidrológica para seus diversos municípios. Diante desse contexto, objetivou-se ajustar os parâmetros das curvas de intensidadeduração-frequência para 163 estações pluviométricas localizadas no estado do Maranhão. Os dados foram obtidos do banco de dados da Agencia Nacional de Águas. Para ajuste das curvas de intensidade-duração-frequênciautilizou-se o método de desagregação das chuvas, usando o modelo probabilístico de Gumbel para estimar os valores máximos em diferentes tempos de durações e período de retorno. De posse desses valores, os parâmetros K, a, b e c das curvas intensidade-duração-frequência foram ajustados pelo método dos mínimos quadrados. Os parâmetros K, a, b e c das curvas intensidade-duração-frequência apresentaram bons ajustes, com 99,7% das equações apresentando r2 superior a 0,98.Universidade Federal de Viçosa - UFV2015-11-24info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufv.br/reveng/article/view/54110.13083/reveng.v23i5.597Engineering in Agriculture; Vol. 23 No. 5 (2015); 435-447Revista Engenharia na Agricultura - REVENG; v. 23 n. 5 (2015); 435-4472175-68131414-398410.13083/reveng.v23i5reponame:Engenharia na Agriculturainstname:Universidade Federal de Viçosa (UFV)instacron:UFVporhttps://periodicos.ufv.br/reveng/article/view/541/372Campos, Alcinei RibeiroSantos, Glenio GuimarãesAnjos, João Carlos Rocha dosStefanoski, Diane CristinaMoraes, Jaurene Moura Féinfo:eu-repo/semantics/openAccess2023-01-19T13:22:46Zoai:ojs.periodicos.ufv.br:article/541Revistahttps://periodicos.ufv.br/revengPUBhttps://periodicos.ufv.br/reveng/oairevistaengenharianagricultura@gmail.com||andrerosa@ufv.br||tramitacao.reveng@gmail.com|| reveng@ufv.br2175-68131414-3984opendoar:2023-01-19T13:22:46Engenharia na Agricultura - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447
EQUAÇÕES DE INTENSIDADE DE CHUVAS PARA O ESTADO DO MARANHÃO - DOI: 10.13083/1414-3984/reveng.v23n5p435-447
title RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447
spellingShingle RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447
Campos, Alcinei Ribeiro
Chuvas extremas
modelos probabilísticos
período de retorno
title_short RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447
title_full RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447
title_fullStr RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447
title_full_unstemmed RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447
title_sort RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447
author Campos, Alcinei Ribeiro
author_facet Campos, Alcinei Ribeiro
Santos, Glenio Guimarães
Anjos, João Carlos Rocha dos
Stefanoski, Diane Cristina
Moraes, Jaurene Moura Fé
author_role author
author2 Santos, Glenio Guimarães
Anjos, João Carlos Rocha dos
Stefanoski, Diane Cristina
Moraes, Jaurene Moura Fé
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Campos, Alcinei Ribeiro
Santos, Glenio Guimarães
Anjos, João Carlos Rocha dos
Stefanoski, Diane Cristina
Moraes, Jaurene Moura Fé
dc.subject.por.fl_str_mv Chuvas extremas
modelos probabilísticos
período de retorno
topic Chuvas extremas
modelos probabilísticos
período de retorno
description Studies of spatial and temporal distribution of rainfall are of extreme importance for security in planning and execution of hydraulic projects and environmental conservation, so work to determine the intensity-duration-frequency curves of rainfall are indispensable for the planning and construction of hydraulic works. Currently the state of Maranhão provides little information related to the curves of intensity-duration-frequency of rainfall, so studies are necessary to develop the curves for its various municipalities. In this context the objective of this work was to determine the parameters of the intensity-duration-frequency equation for 163 rainfall stations located in the state of Maranhão. Data were obtained from the National Water Agency database. For adjustment of intensity-duration-frequency curves the rainfall breakdown method was used, considering the probabilistic model of Gumbel for estimating the maximum values in different time durations and return period. Upon acquisition of these values the parameters K, a, b and c of the intensity-duration-frequency curves were adjusted by the least squares method. The parameters K, a, b and c of the intensity-duration-frequency curves show good adjust, with 99.7% of curves presenting r2 greater than 0.98.
publishDate 2015
dc.date.none.fl_str_mv 2015-11-24
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufv.br/reveng/article/view/541
10.13083/reveng.v23i5.597
url https://periodicos.ufv.br/reveng/article/view/541
identifier_str_mv 10.13083/reveng.v23i5.597
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufv.br/reveng/article/view/541/372
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Viçosa - UFV
publisher.none.fl_str_mv Universidade Federal de Viçosa - UFV
dc.source.none.fl_str_mv Engineering in Agriculture; Vol. 23 No. 5 (2015); 435-447
Revista Engenharia na Agricultura - REVENG; v. 23 n. 5 (2015); 435-447
2175-6813
1414-3984
10.13083/reveng.v23i5
reponame:Engenharia na Agricultura
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str Engenharia na Agricultura
collection Engenharia na Agricultura
repository.name.fl_str_mv Engenharia na Agricultura - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv revistaengenharianagricultura@gmail.com||andrerosa@ufv.br||tramitacao.reveng@gmail.com|| reveng@ufv.br
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