Hydrological regionalization of maximum stream flows using an approach based on L-moments
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/29453 |
Resumo: | The proper design of hydraulic structures depends on estimates of maximum stream flows. The scarce stream flow monitoring in Brazil has led to the use of regionalization methods. The main objective of this study was to develop a tool via regional function to estimate maximum stream flows and their corresponding return periods (RP) with the aid of techniques based on the L-moments method, seeking for adequate hydrologic engineering applications and flood risk management. Annual maximum stream flow historical series were adjusted to traditional 2-parameter probability density functions (PDFs) (Normal, 2-parameter Log-Normal, Gumbel, Gamma) and multiparameter PDFs (GEV and Kappa), based on the L-moments method, which were used in the development of the regional function employing the dimensionless curve method. The regional function’s predictive capability was determined by cross-validation for different RPs. It can be concluded that the approach based on L-moments was successfully used to adjust the regional function. In addition, the regional function: i) was improved when using the aforementioned multiparameter PDFs and ii) was framed as optimum for RP of up to 100 years and considered useful for practical engineering projects and flood risk management. |
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Hydrological regionalization of maximum stream flows using an approach based on L-momentsRegionalização hidrológica de vazões máximas utilizando uma abordagem baseada nos momentos-LFlood risk managementStatistical hydrologyStream flow monitoringGestão de risco de inundaçõesHidrologia estatísticaMonitoramento de fluxoThe proper design of hydraulic structures depends on estimates of maximum stream flows. The scarce stream flow monitoring in Brazil has led to the use of regionalization methods. The main objective of this study was to develop a tool via regional function to estimate maximum stream flows and their corresponding return periods (RP) with the aid of techniques based on the L-moments method, seeking for adequate hydrologic engineering applications and flood risk management. Annual maximum stream flow historical series were adjusted to traditional 2-parameter probability density functions (PDFs) (Normal, 2-parameter Log-Normal, Gumbel, Gamma) and multiparameter PDFs (GEV and Kappa), based on the L-moments method, which were used in the development of the regional function employing the dimensionless curve method. The regional function’s predictive capability was determined by cross-validation for different RPs. It can be concluded that the approach based on L-moments was successfully used to adjust the regional function. In addition, the regional function: i) was improved when using the aforementioned multiparameter PDFs and ii) was framed as optimum for RP of up to 100 years and considered useful for practical engineering projects and flood risk management.O dimensionamento adequado de estruturas hidráulicas é dependente das estimativas de vazões máximas. A escassez no monitoramento hidrológico no Brasil tem levado ao uso de métodos de regionalização. O principal objetivo do presente estudo foi desenvolver uma ferramenta via função regional para a estimativa das vazões máximas e seus respectivos tempos de retorno, com o suporte de técnicas baseadas no método dos momentos-L, com vistas a aplicações adequadas da engenharia hidrológica e da gestão de risco de cheias. As séries de vazão máxima diária anual foram ajustadas às funções densidade de probabilidade tradicionais de 2 parâmetros (Normal, 2-parameter Log-Normal, Gumbel, Gamma) e multiparâmetros (GEV and Kappa), baseando-se no método dos momentos-L, as quais foram utilizadas no desenvolvimento da função regional pelo método da curva adimensional. A capacidade preditiva da função regional foi determinada por validação cruzada para diferentes tempos de retorno. Pode-se concluir que a abordagem baseada nos momentos-L no ajuste da função regional foi satisfatória. Além disso,a função regional: i) foi aperfeiçoada quando as distribuições multiparâmetros acima mencionadas foram usadas e ii) foi classificada como ótima para tempos de retorno de até 100 anos sendo útil a projetos práticos de engenharia e na gestão de cheias.Associação Brasileira de Recursos Hídricos2018-06-15T19:11:56Z2018-06-15T19:11:56Z2017info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfCASSALHO, F. et al. Hydrological regionalization of maximum stream flows using an approach based on L-moments. Revista Brasileira de Recursos Hídricos, Porto Alegre, v. 22, e27, 2017. doi: http://dx.doi.org/10.1590/2318-0331.021720160064.http://repositorio.ufla.br/jspui/handle/1/29453Revista Brasileira de Recursos Hídricosreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessCassalho, FelícioBeskow, SamuelVargas, Marcelle MartinsMoura, Maíra Martim deÁvila, Leo FernandesMello, Carlos Rogério deeng2018-06-15T19:11:57Zoai:localhost:1/29453Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2018-06-15T19:11:57Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Hydrological regionalization of maximum stream flows using an approach based on L-moments Regionalização hidrológica de vazões máximas utilizando uma abordagem baseada nos momentos-L |
title |
Hydrological regionalization of maximum stream flows using an approach based on L-moments |
spellingShingle |
Hydrological regionalization of maximum stream flows using an approach based on L-moments Cassalho, Felício Flood risk management Statistical hydrology Stream flow monitoring Gestão de risco de inundações Hidrologia estatística Monitoramento de fluxo |
title_short |
Hydrological regionalization of maximum stream flows using an approach based on L-moments |
title_full |
Hydrological regionalization of maximum stream flows using an approach based on L-moments |
title_fullStr |
Hydrological regionalization of maximum stream flows using an approach based on L-moments |
title_full_unstemmed |
Hydrological regionalization of maximum stream flows using an approach based on L-moments |
title_sort |
Hydrological regionalization of maximum stream flows using an approach based on L-moments |
author |
Cassalho, Felício |
author_facet |
Cassalho, Felício Beskow, Samuel Vargas, Marcelle Martins Moura, Maíra Martim de Ávila, Leo Fernandes Mello, Carlos Rogério de |
author_role |
author |
author2 |
Beskow, Samuel Vargas, Marcelle Martins Moura, Maíra Martim de Ávila, Leo Fernandes Mello, Carlos Rogério de |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cassalho, Felício Beskow, Samuel Vargas, Marcelle Martins Moura, Maíra Martim de Ávila, Leo Fernandes Mello, Carlos Rogério de |
dc.subject.por.fl_str_mv |
Flood risk management Statistical hydrology Stream flow monitoring Gestão de risco de inundações Hidrologia estatística Monitoramento de fluxo |
topic |
Flood risk management Statistical hydrology Stream flow monitoring Gestão de risco de inundações Hidrologia estatística Monitoramento de fluxo |
description |
The proper design of hydraulic structures depends on estimates of maximum stream flows. The scarce stream flow monitoring in Brazil has led to the use of regionalization methods. The main objective of this study was to develop a tool via regional function to estimate maximum stream flows and their corresponding return periods (RP) with the aid of techniques based on the L-moments method, seeking for adequate hydrologic engineering applications and flood risk management. Annual maximum stream flow historical series were adjusted to traditional 2-parameter probability density functions (PDFs) (Normal, 2-parameter Log-Normal, Gumbel, Gamma) and multiparameter PDFs (GEV and Kappa), based on the L-moments method, which were used in the development of the regional function employing the dimensionless curve method. The regional function’s predictive capability was determined by cross-validation for different RPs. It can be concluded that the approach based on L-moments was successfully used to adjust the regional function. In addition, the regional function: i) was improved when using the aforementioned multiparameter PDFs and ii) was framed as optimum for RP of up to 100 years and considered useful for practical engineering projects and flood risk management. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017 2018-06-15T19:11:56Z 2018-06-15T19:11:56Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
CASSALHO, F. et al. Hydrological regionalization of maximum stream flows using an approach based on L-moments. Revista Brasileira de Recursos Hídricos, Porto Alegre, v. 22, e27, 2017. doi: http://dx.doi.org/10.1590/2318-0331.021720160064. http://repositorio.ufla.br/jspui/handle/1/29453 |
identifier_str_mv |
CASSALHO, F. et al. Hydrological regionalization of maximum stream flows using an approach based on L-moments. Revista Brasileira de Recursos Hídricos, Porto Alegre, v. 22, e27, 2017. doi: http://dx.doi.org/10.1590/2318-0331.021720160064. |
url |
http://repositorio.ufla.br/jspui/handle/1/29453 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Recursos Hídricos |
publisher.none.fl_str_mv |
Associação Brasileira de Recursos Hídricos |
dc.source.none.fl_str_mv |
Revista Brasileira de Recursos Hídricos reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835065230557184 |