Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data

Detalhes bibliográficos
Autor(a) principal: Silva Junior, João José da
Data de Publicação: 2020
Outros Autores: Colombo, Alberto, Oliveira, Geraldo Cézar, Silva, Bruno Montoani, Eugênio, José Eduardo Juliaci
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/42552
Resumo: In the last few years, many studies have been published by authors from several countries offering approximations and use of the inverse method. However, the unique environmental conditions and distinct properties of the tropical soils in Brazil require extra considerations and the need to adjust these methods to tropical soil conditions. Considering the above, this determined the parameters of the van Genuchten (1980) model (θs, θr, α, n) of the water retention curve in the soils. It also determined the parameter (Ks) of the soil’s hydraulic conductivity curve by solving an inverse problem using the HYDRUS-2D model, considering cumulative infiltration data collected in the field by means of an infiltration test using the tension infiltrometer. It then compared the hydraulic properties determined by these methods in relation to the standard laboratory method. The inverse method was able to efficiently determine the water retention curves in the soils here studied; however, it was not possible to reliably determine the unsaturated hydraulic conductivity curve.
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spelling Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field dataEstimativa das propriedades hidráulicas de solos tropicais com método inverso e dados de campo do infiltrômetro de tensãoCumulative infiltrationTropical soilsSoils - Water retention curvesInfiltração cumulativaSolos tropicaisSolos - Curvas de retenção de águaIn the last few years, many studies have been published by authors from several countries offering approximations and use of the inverse method. However, the unique environmental conditions and distinct properties of the tropical soils in Brazil require extra considerations and the need to adjust these methods to tropical soil conditions. Considering the above, this determined the parameters of the van Genuchten (1980) model (θs, θr, α, n) of the water retention curve in the soils. It also determined the parameter (Ks) of the soil’s hydraulic conductivity curve by solving an inverse problem using the HYDRUS-2D model, considering cumulative infiltration data collected in the field by means of an infiltration test using the tension infiltrometer. It then compared the hydraulic properties determined by these methods in relation to the standard laboratory method. The inverse method was able to efficiently determine the water retention curves in the soils here studied; however, it was not possible to reliably determine the unsaturated hydraulic conductivity curve.Nos últimos anos, muitas publicações têm sido apresentadas por autores de diversos países oferecendo aproximações e utilização do método inverso. No entanto a condição ambiental única e as distintas propriedades dos solos tropicais do Brasil requerem considerações extras e a necessidade de ajuste desses métodos para as condições dos solos tropicais. Diante do exposto, o presente trabalho teve como objetivos determinar os parâmetros do modelo de van Genuchten (1980) (θs, θr, α, n) da curva de retenção de água no solo. Assim como determinar o parâmetro (Ks) da curva de condutividade hidráulica no solo através da resolução de um problema inverso aplicando o modelo HYDRUS-2D. A partir de dados de infiltração acumulada coletados no campo por meio de um ensaio de infiltração empregando o infiltrômetro de tensão, e comparar as propriedades hidráulicas determinadas por esses métodos em relação ao método padrão de laboratório. O método inverso conseguiu determinar de forma eficiente às curvas de retenção de água nos solos aqui estudados, não sendo possível a determinação confiável da curva de condutividade hidráulica não saturada.Instituto de Pesquisas Ambientais em Bacias Hidrográficas2020-08-21T16:36:22Z2020-08-21T16:36:22Z2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSILVA JÚNIOR, J. J. da et al. Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data. Revista Ambiente & Água, Taubaté, v. 15, n. 3, e2503, 2020. DOI: https://doi.org/10.4136/ambi-agua.2503.http://repositorio.ufla.br/jspui/handle/1/42552Revista Ambiente & Águareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessSilva Junior, João José daColombo, AlbertoOliveira, Geraldo CézarSilva, Bruno MontoaniEugênio, José Eduardo Juliacieng2020-08-21T16:36:22Zoai:localhost:1/42552Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-08-21T16:36:22Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data
Estimativa das propriedades hidráulicas de solos tropicais com método inverso e dados de campo do infiltrômetro de tensão
title Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data
spellingShingle Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data
Silva Junior, João José da
Cumulative infiltration
Tropical soils
Soils - Water retention curves
Infiltração cumulativa
Solos tropicais
Solos - Curvas de retenção de água
title_short Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data
title_full Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data
title_fullStr Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data
title_full_unstemmed Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data
title_sort Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data
author Silva Junior, João José da
author_facet Silva Junior, João José da
Colombo, Alberto
Oliveira, Geraldo Cézar
Silva, Bruno Montoani
Eugênio, José Eduardo Juliaci
author_role author
author2 Colombo, Alberto
Oliveira, Geraldo Cézar
Silva, Bruno Montoani
Eugênio, José Eduardo Juliaci
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Silva Junior, João José da
Colombo, Alberto
Oliveira, Geraldo Cézar
Silva, Bruno Montoani
Eugênio, José Eduardo Juliaci
dc.subject.por.fl_str_mv Cumulative infiltration
Tropical soils
Soils - Water retention curves
Infiltração cumulativa
Solos tropicais
Solos - Curvas de retenção de água
topic Cumulative infiltration
Tropical soils
Soils - Water retention curves
Infiltração cumulativa
Solos tropicais
Solos - Curvas de retenção de água
description In the last few years, many studies have been published by authors from several countries offering approximations and use of the inverse method. However, the unique environmental conditions and distinct properties of the tropical soils in Brazil require extra considerations and the need to adjust these methods to tropical soil conditions. Considering the above, this determined the parameters of the van Genuchten (1980) model (θs, θr, α, n) of the water retention curve in the soils. It also determined the parameter (Ks) of the soil’s hydraulic conductivity curve by solving an inverse problem using the HYDRUS-2D model, considering cumulative infiltration data collected in the field by means of an infiltration test using the tension infiltrometer. It then compared the hydraulic properties determined by these methods in relation to the standard laboratory method. The inverse method was able to efficiently determine the water retention curves in the soils here studied; however, it was not possible to reliably determine the unsaturated hydraulic conductivity curve.
publishDate 2020
dc.date.none.fl_str_mv 2020-08-21T16:36:22Z
2020-08-21T16:36:22Z
2020
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 SILVA JÚNIOR, J. J. da et al. Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data. Revista Ambiente & Água, Taubaté, v. 15, n. 3, e2503, 2020. DOI: https://doi.org/10.4136/ambi-agua.2503.
http://repositorio.ufla.br/jspui/handle/1/42552
identifier_str_mv SILVA JÚNIOR, J. J. da et al. Estimation of tropical soils’ hydraulic properties with inverse method and tension infiltrometer field data. Revista Ambiente & Água, Taubaté, v. 15, n. 3, e2503, 2020. DOI: https://doi.org/10.4136/ambi-agua.2503.
url http://repositorio.ufla.br/jspui/handle/1/42552
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
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 Instituto de Pesquisas Ambientais em Bacias Hidrográficas
publisher.none.fl_str_mv Instituto de Pesquisas Ambientais em Bacias Hidrográficas
dc.source.none.fl_str_mv Revista Ambiente & Água
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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