On the proceeding of a saturation front under ponded conditions

The vertical infiltration of water is a variable saturated flow process until the soil under an inundated area is completely saturated. However, in several modelling studies that regard the river-aquifer interactions, the vertical infiltration under ponded conditions is modelled as a saturated soil...

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Autores principales:	Sinaba,Benjamin, Becker,Bernhard, Klauder,Wiebke, Salazar,Iván, Schüttrump,Holger
Lenguaje:	English
Publicado:	Universidad Católica de la Santísima Concepción 2013
Materias:	infiltration ponded conditions inundation vadose zone Richards's equation Haverkamp infiltration model
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132013000100003
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spelling	oai:scielo:S0718-281320130001000032013-10-18On the proceeding of a saturation front under ponded conditionsSinaba,BenjaminBecker,BernhardKlauder,WiebkeSalazar,IvánSchüttrump,Holger infiltration ponded conditions inundation vadose zone Richards's equation Haverkamp infiltration model The vertical infiltration of water is a variable saturated flow process until the soil under an inundated area is completely saturated. However, in several modelling studies that regard the river-aquifer interactions, the vertical infiltration under ponded conditions is modelled as a saturated soil flow process. In order to find out whether the assumption of saturated conditions under an inundation area is suitable or not, the saturated time of the soil below an inundated area is determined. This is realised by evaluating an analytical infiltration model with two example soils under different initial conditions and for different ponding depths. The model results show, that saturation of several meters of sandy soil under ponded conditions takes place within a period of hours. For the clay example, the saturation process happens within the order of days, and if the clay is initially dry, it can take even weeks. This leads to the conclusion that saturated model approaches are suitable for sand and gravel aquifers if they are not covered with a clay layer. While the ponding depth influences the infiltration rate and the progression of the saturation front in the sandy soil, for initially wet clay the infiltration rates were found to change only marginally with the ponding depth.info:eu-repo/semantics/openAccessUniversidad Católica de la Santísima ConcepciónObras y proyectos n.13 20132013-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132013000100003en10.4067/S0718-28132013000100003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	infiltration ponded conditions inundation vadose zone Richards's equation Haverkamp infiltration model
spellingShingle	infiltration ponded conditions inundation vadose zone Richards's equation Haverkamp infiltration model Sinaba,Benjamin Becker,Bernhard Klauder,Wiebke Salazar,Iván Schüttrump,Holger On the proceeding of a saturation front under ponded conditions
description	The vertical infiltration of water is a variable saturated flow process until the soil under an inundated area is completely saturated. However, in several modelling studies that regard the river-aquifer interactions, the vertical infiltration under ponded conditions is modelled as a saturated soil flow process. In order to find out whether the assumption of saturated conditions under an inundation area is suitable or not, the saturated time of the soil below an inundated area is determined. This is realised by evaluating an analytical infiltration model with two example soils under different initial conditions and for different ponding depths. The model results show, that saturation of several meters of sandy soil under ponded conditions takes place within a period of hours. For the clay example, the saturation process happens within the order of days, and if the clay is initially dry, it can take even weeks. This leads to the conclusion that saturated model approaches are suitable for sand and gravel aquifers if they are not covered with a clay layer. While the ponding depth influences the infiltration rate and the progression of the saturation front in the sandy soil, for initially wet clay the infiltration rates were found to change only marginally with the ponding depth.
author	Sinaba,Benjamin Becker,Bernhard Klauder,Wiebke Salazar,Iván Schüttrump,Holger
author_facet	Sinaba,Benjamin Becker,Bernhard Klauder,Wiebke Salazar,Iván Schüttrump,Holger
author_sort	Sinaba,Benjamin
title	On the proceeding of a saturation front under ponded conditions
title_short	On the proceeding of a saturation front under ponded conditions
title_full	On the proceeding of a saturation front under ponded conditions
title_fullStr	On the proceeding of a saturation front under ponded conditions
title_full_unstemmed	On the proceeding of a saturation front under ponded conditions
title_sort	on the proceeding of a saturation front under ponded conditions
publisher	Universidad Católica de la Santísima Concepción
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132013000100003
work_keys_str_mv	AT sinababenjamin ontheproceedingofasaturationfrontunderpondedconditions AT beckerbernhard ontheproceedingofasaturationfrontunderpondedconditions AT klauderwiebke ontheproceedingofasaturationfrontunderpondedconditions AT salazarivan ontheproceedingofasaturationfrontunderpondedconditions AT schuttrumpholger ontheproceedingofasaturationfrontunderpondedconditions
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On the proceeding of a saturation front under ponded conditions

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