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3 edition of Influence of unsaturated hydraulic properties on infiltration from circular surface areas found in the catalog.

Influence of unsaturated hydraulic properties on infiltration from circular surface areas

A. Nassehzadeh-Tabrizi

Influence of unsaturated hydraulic properties on infiltration from circular surface areas

by A. Nassehzadeh-Tabrizi

  • 29 Want to read
  • 6 Currently reading

Published by Utah Water Research Laboratory, Utah State University in Logan, Utah .
Written in English

    Subjects:
  • Soil permeability -- Mathematical models.

  • Edition Notes

    Statementby Abdolhossien Nassehzadeh-Tabrizi and Roland W. Jeppson.
    SeriesHydraulics and hydrology series ;, UWRL/H-80/03
    ContributionsJeppson, Roland W.
    Classifications
    LC ClassificationsS594 .N26 1980
    The Physical Object
    Paginationx, 104 p. :
    Number of Pages104
    ID Numbers
    Open LibraryOL3924452M
    LC Control Number81622071

    devices for in situ estimates of soil surface hydraulic properties such as saturated and unsaturated hydraulic conductivity (Angulo-Jaramillo et al., ). An important advantage of this technique is that it is a relatively rapid and portable method, which allows exploration of the dependence of hydraulic properties on soil : David Moret-Fernández, Borja Latorre Garcés, César González-Cebollada, Carolina Peña-Sancho. Chapter Estimation of Saturated Hydraulic Conductivity and Final Infiltration Rate Indirect Methods While field measurements permit an exact determination of soil hydraulic properties, they are time consuming. Moreover, many studies are concerned with large areas of File Size: KB.

    Estimating unsaturated hydraulic conductivity from easily measured soil properties [] Vereecken, H. (Univ. of Leuven, Leuven, Heverlee (Belgium)) Maes, J. Feyen, by: Hydraulic conductivity at and near saturation (Ks and K(h)) are among the most important characteristics defining water behavior in soil. Characterization of possibilities, advantages and limitations of the Mini Disk infiltrometer (MDI) for Ks and K(h) determination in comparison with Hood infiltrometer (HI) was the main aim of this study. The MDI device was subjected to Author: Kamila Báťková, Markéta Miháliková, Svatopluk Matula.

    values can be reliably substituted for K values when estimating the unsaturated hydraulic properties. Results for data sets 3 and 5, which included only a matching point for the retention curve, are shown in Figure 1 by small open and solid circles, respectively. NORFOLK SANDh-IO_. a 8-h-K 0 e-u. 8-h-dK/dS a.. e-dK/de 0 FoeId data b-e-h Ae-h. An infiltration method was used to determine the relationship between hydraulic conductivity and moisture content for a slate dust. The necessary unsaturated conditions of the porous material were obtained either by maintaining the surface at a suction through a porous membrane or by maintaining an air pressure greater than atmospheric pressure.


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Influence of unsaturated hydraulic properties on infiltration from circular surface areas by A. Nassehzadeh-Tabrizi Download PDF EPUB FB2

The analytical model proposed by Haverkamp et al. () to describe three-dimensional transient infiltration from a circular source is introduced and a single-test approach is presented that allows estimation of soil sorptivity, S 0, and hydraulic conductivity, K 0, from the coefficients of two-term cumulative infiltration equation.

Two Cited by: 2. The unsaturated hydraulic properties are very important parameter in any quantitative description of partially saturated flow equation. Currently, most in-situ methods are estimating the. Young et al. () investigated the unsaturated hydraulic properties along a desert chronosequence and showed a strong inverse correlation between pavement age and saturated hydraulic conductivity (K s).

Their results also suggested that pedogenic development of the Av horizon is a primary control on the near-surface water balance in these Cited by: Results Saturated Hydraulic Conductivity Measured Ksat results are shown in Fig.

4 and compared to the predicted Ksat using the methods of Bouwer and Rice () and Mponimba et al. Ksat values for the three fine-earth distributions were similar and varied between x and x cm/ by: 9.

After examining the different causes of soil surface sealing, water infiltration experiments for crust characterization are presented which include (i) the transient method proposed by Vandervaere. INDIRECT METHODS FOR ESTIMATING THE HYDRAULIC PROPERTIES OF UNSATURATED SOILS Proceedings of the International Workshop on Indirect Methods for Estimating the Hydraulic Properties of Unsaturated Soils Riverside, California, Octoberedited by M.

van Genuchten and F. Leij U. Salinity Laboratory USDA, ARS Glenwood Drive. “Test System for Hydraulic Properties of Unsaturated Nonwoven Geotextiles.” Geosynthetics International. 17(5), Parks, J.M., Stewart, M.A., and McCartney, J.S.

“Validation of a Centrifuge Permeameter for Investigation of Transient Infiltration and Drainage Flow Processes in Unsaturated Soils.”.

This study presents a methodology for estimating the unsaturated hydraulic properties of rock fractures under deformation conditions. The surface morphology of an artificial granite rock fracture was examined using a high-resolution three-dimensional laser scanner, and the aperture distribution of the fracture was found to follow a Gaussian by: Influence of rainfall intensity on infiltration and deformation of unsaturated soil slopes - Garcia et al (7) in which D/Dt denotes the material time derivative, r a is the material density, and v i a is the velocity of the a phase.

Assuming that the particles and water are incompressible, the conservation laws for water and. Parameter estimation of soil hydraulic and thermal property functions for unsaturated porous media using the HYDRUS-2D code 9 pling area of surface residues that could impede insertion of the ring.

Second, using a sledge hammer and block of wood, we inserted the single cm diameter infiltration ring (Fig. 1)Cited by: The temperature of infiltration water was 61the oC during the whole experiment.

he final T steady-state infiltration rate was also measured and subsequently used for calculating the saturated hydraulic conductivity of soil using the Wooding the () equation (cited from Radcliffe and Šimůnek,page ).File Size: KB.

Infiltration tests were conducted in the laboratory to study water movement during infiltration in compacted clay and to determine the suction head at the wetting front as defined in the Green-Ampt infiltration equation.

Tests were conducted on. The comparison of the parameter estimates from infiltration and internal drainage experiments at two sites indicates that the parameter estimates are close to each other. It is concluded that infiltration experiment, which is simpler and of short duration can be an alternative to internal drainage experiment for estimating the unsaturated soil.

Kosugi K () Lognormal distribution model for unsaturated soil hydraulic properties. Water Resour Res – CrossRef Google Scholar Leong EC, Rahardjo H () Review of soil-water characteristic curve by: 3. Estimating saturated hydraulic conductivity from surface Ground-penetrating radar monitoring of infiltration Emmanuel Léger1, Albane Saintenoy2 and Yves Coquet3 1 Université Paris Sud, UMR IDES, Orsay, France, @ 2Université Paris Sud, UMR IDES, Orsay, France, [email protected] 3Université Orléans, ISTO/OSUC.,Orléans.

Experimental Study of Influence Factors in Unsaturated Soil Infiltration Rate Based on the unsaturated soil ponding water infiltration test in laboratory, the influences of cohesive particles content, dry density and initial water content on infiltration rate are analyzed.

Journal of Hydraulic Engineering,(7): Author: Ling Cao, Xin Zhe Li. where i [L] is the cumulative infiltration depth of water into the soil under a constant pressure head at the soil surface, t [T] is time, and S [L T −] is the sorptivity at the infiltration sorptivity is determined from the slope of linear regression of i as a function of t for small problems are associated with this standard method: (1) equation (1) is only valid Cited by: hydraulic properties at a specific location to a reference curve using simple linear relations [Vogel et al., ].

Since different infiltration models are based on different assumptions, it is reasonable to expect differences in esti-mated conductivity values and, consequently, in the statis-Cited by: Overview of soil infiltration.

During rainfall, a saturated zone forms quickly at the soil surface as rainfall causes surface ponding. The wetting front advances downward into the soil as infiltration continues, causing an increase in the moisture content as a function of depth (Hillel, ).A transmission zone between the saturated zone and the wetting front conveys water deeper.

SATURATED-UNSATURATED HYDRAULIC PROPERTIES OF POROUS ASPHALT MIXTURE. Takao YANO 1), has been expected to improve the urban environments by the pervious surface structures. Because we need to determine the water retention and permeability characteristics of pavement materials in order to evaluate the rainfall storage and infiltration.

Areas of Expertise. Geological sequestration of CO2, impact of wetted-phase structure on geophysical properties in porous media, non-ideal transport processes in porous and fractured media, non-continuum approaches for modeling multiple-phase flow and transport, geologic controls on hydraulic properties and flow and transport processes, flow and transport .The importance of hydraulic conductivity in the calculation of infiltration with the Green-Ampt equation has been well docu- mented.

Brakensiek and Onstad () found that the effective conductivity parameters have a major influence on infiltration and runoff amounts and rates.

Moore () showed that both the.Infiltration is the process by which water on the ground surface enters the is commonly used in both hydrology and soil infiltration capacity is defined as the maximum rate of infiltration. It is most often measured in meters per day but can also be measured in other units of distance over time if necessary.

The infiltration capacity decreases as the soil moisture content.