Results 11 to 20 of about 922,701 (227)

Design of an automated tension infiltrometer for unsaturated hydraulic conductivity measurement [PDF]

open access: yes, 2006
A tension infiltrometer for field use, where both water level changes measurement and tension settings could be automated, was built in-house. Differential pressure transducers were used to automate the water level measurement in the reservoir.
Špongrová, Kamila
core   +7 more sources

Estimation of hydraulic conductivity function in unsaturated pyroclastic soils [PDF]

open access: yesE3S Web of Conferences, 2016
A full understanding of slope failure conditions in unsaturated pyroclastic slope needs a fair analysis of groundwater flow and, therefore, a proper hydraulic soil characterization in terms of either soil water retention curves (SWRC) and hydraulic ...
Pirone Marianna   +3 more
doaj   +2 more sources

The Recovery of Soils after Compaction: A laboratory investigation into the effect of wet/dry cycles on bulk density and soil hydraulic functions [PDF]

open access: yes, 2009
Van den Akker et al. (2003) stated that “European subsoils are more threatened than ever in history” in an editorial referring to the results of the European Union concerted action “Experiences with the impact of subsoil compaction on soil crop growth ...
O'Keefe, Sorche
core   +7 more sources

Previously Unrecognized Land-Use Control on Deep Soil CO<sub>2</sub> Sink. [PDF]

open access: yesGlob Chang Biol
Transport‐limited, boundary‐conditioned bidirectional exchange of topsoil‐respired CO2 drives CO2 accumulation in less bioactive subsoils in concentrations that cannot be explained by in situ production alone and far exceed atmospheric boundary concentrations, revealing a production‐transport imbalance and a potential land‐use‐sensitive pathway for ...
Tetteh K   +4 more
europepmc   +2 more sources

Estimation of the hydraulic parameters of unsaturated samples by electrical resistivity tomography [PDF]

open access: yes, 2012
In situ and laboratory experiments have shown that electrical resistivity tomography (ERT) is an effective tool to image transient phenomena in soils. However, its application in quantifying soil hydraulic parameters has been limited.
Musso, Guido   +6 more
core   +1 more source

Experimental Study on Determining Unsaturated Property of Soil [PDF]

open access: yes, 1980
This paper deals with the experimental study of hydraulic properties of unsaturated soil. In treating unsaturated zone, a great deal more data are required than are required for the saturated zone, but these properties of soils must be known to apply the
Nishigaki, Makoto, Kono, Iichiro
core   +1 more source

Experimental study on diffusion of chloride ions in unsaturated soils

open access: yesYantu gongcheng xuebao, 2021
Advection and diffusion are the mechanisms involved in contaminant transport in soils. The diffusion will be the dominant process when seepage velocity is low.
JI Yong-xin 1, ZHANG Wen-jie 2
doaj   +1 more source

Prediction of unsaturated soil hydraulic conductivity with electrical conductivity [PDF]

open access: yesWater Resources Research, 2009
Soil hydraulic conductivity (K) varies greatly with matric potential (h) and exhibits a high variability at the field scale. However, this key property for estimating water flux in soils is difficult to measure. In contrast, soil electrical conductivity (σ) is easier to measure and is influenced by the same parameters affecting K.
Doussan, Claude, Ruy, Stéphane
openaire   +3 more sources

Estimation of Unsaturated Soil Hydraulic Conductivity Using Inverse Approach Under Soil Salinity Condition [PDF]

open access: yesعلوم و مهندسی آبیاری, 2018
Moisture flow through unsaturated zone is vital in agricultural engineering, soil science, groundwater hydrology, and environmental engineering. Moisture flow through unsaturated zone is complex due to the dependencies of flow and storage properties on ...
Mehrnaz Amini   +2 more
doaj   +1 more source

Analysis of unsaturated-saturated flow induced by a vadose zone well injection

open access: yes地质科技通报, 2023
Objective Vadose zone well (VZW) injection is an effective method of managed aquifer recharge (MAR). To improve VZW injection management, it is of great importance to accurately describe the unsaturated zone properties.
Cuiting Qi, Hongbin Zhan, Yonghong Hao
doaj   +1 more source

Home - About - Disclaimer - Privacy