RAINFALL INTENSITY EQUATIONS FOR THE STATE OF MARANHÃO, BRAZIL - DOI: 10.13083/1414-3984/reveng.v23n5p435-447
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
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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Engenharia na Agricultura |
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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 |
_version_ |
1800211145646145536 |