English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/126057
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

A modified hood infiltrometer to estimate the soil hydraulic properties from the transient water flow measurements

AuthorsMoret-Fernández, David ; González-Cebollada, César; Latorre Garcés, Borja ; Pérez Laguardia, Valero
KeywordsDisc infiltrometer
Hydraulic conductivity
Nonstationary water flow state
Issue DateNov-2015
PublisherElsevier
CitationMoret-Fernández D, González-Cebollada C, Latorre B, Pérez V. A modified hood infiltrometer to estimate the soil hydraulic properties from the transient water flow measurements. Journal of Hydrology 530: 554–560 (2015)
AbstractIn-situ measurements of soil hydraulic properties on covered soil surfaces (i.e. vegetated or residue covered surfaces) are of paramount importance in many agronomic or hydrological researches. These soil parameters are commonly estimated with the tension infiltrometry technique. This paper presents a portable and modified design of the hood infiltrometer (MHI) that, unlike to the original hood infiltrometer, allows estimating the soil hydraulic properties from the transient cumulative infiltration curve. The MHI consists of a water-supply reservoir attaches to a hat-shaped base placed on the soil surface. The base of the hat is closed by a system of sticks and a malleable material ring. To test the viability of this new design, the hydraulic conductivity (Ks) estimated with MHI in a loam soil using the multiple head approach was compared to the corresponding values calculated from the transient infiltration curve analysis. Next, the MHI was tested on three different soils at saturated conditions, and the sorptivity (S) and Ks estimated by the transient infiltration curve analysis were compared to the corresponding values obtained with a disc infiltrometer (DI). An additional field experiment was performed to compare the hydraulic properties measured with MHI on a bare soil and a soil covered with plants. Results demonstrated that this design allows hermetically closing the base of the hat without disturbing the soil surface. The Ks estimated with the multiple head approach was not statistically different (p = 0.61) to that obtained with the transient infiltration curve analysis. No significant differences between the Ks (p = 0.66) and S (p = 0.50) values estimated with DI and MHI were observed. The S values measured with MHI on the covered soil surface were significantly higher than that measured on the adjacent bare soil. These results indicate that MHI can be a viable alternative to estimate the hydraulic properties of covered soils from the measured transient infiltration curve.
Description24 Pags.- 3 Tabls.- 5 Figs. The definitive version is available at: http://www.sciencedirect.com/science/journal/00221694
Publisher version (URL)http://dx.doi.org/10.1016/j.jhydrol.2015.10.014
URIhttp://hdl.handle.net/10261/126057
DOI10.1016/j.jhydrol.2015.10.014
ISSN0022-1694
E-ISSN1879-2707
Appears in Collections:(EEAD) Artículos
Files in This Item:
File Description SizeFormat 
MoretD_JHydrol_2015.pdf679,65 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.