Abstract. The saturated hydraulic conductivity (Ksat) is a key soil property governing agricultural production. However, the influence of conversion from conventional tillage (CT) to conservation (CS; including no tillage, NT, and reduced RT) on Ksat soils not well understood still debated. In this study, we applied global meta-analysis method synthesize 227 paired observations for 69 published...

Kampong Som Basin is a Paleozoic-Mesozoic sedimentary basin located in southern Cambodia. While the sandstone of Bokor Formation expected to be reservoir for hydrocarbon accumulation. Hence, this study aims define properties, quality, and factors that control rock quality. Sandstones are sampled analyzed using helium porosimeter, nitrogen permeameter, polarized light microscope, scanning electr...

The geosynthetic clay liner (GCL) overlap plays a key role in maintaining hydraulic performance of the barrier systems, e.g., bottom and cover systems. However, its influences on behavior vertical have been rarely investigated. This paper aims to address this issue using large-scale model test 3-dimensional finite element (FE) modeling. In test, GCL at width 500 mm was tested under constant hea...

The knowledge of soil and water movement in vadose zone is essential for a wide range of scientific and practical fields. One of the main but less studied media is the soil under the Undrained On-Site Treatment Systems (UOSTS). In situ monitoring is necessary to interpret most physical and hydric properties of soil and to determine the chemical composition of seepage water as a key aspect in su...

The floodplains of many gravel-bed streams have a general stratigraphy that consists of a layer of topsoil covering gravel-dominated subsoil. Previous research has demonstrated that this stratigraphy can facilitate preferential groundwater flow through focused linear features, such as paleochannels, or gravelly regions within the vadose zone. These areas within the floodplain vadose zone may pr...

saturated hydraulic conductivity (ks) is one of the most important physical features of soil that have wide usage in soil and water science. measuring ks carries on laboratory and field. guelph permeameter (gp) method is one of the field measuring method for determining field saturated hydraulic conductivity (kfs) above the ground water table. well-shape-factor (c) is one important parameter ne...

due to availability of proper materials in landfills (at most parts of iran especially in kahrizak) and also less expenditure of this liner in comparison with other liners it can be count as an acceptable choice. different studies imply that one of the most important factors for soil liner selection is local conditions and also liner compatibility with generated leachate in studied site. hydrau...