vadose zone वाक्य
उदाहरण वाक्य
मोबाइल
- Most soils have a water content less than porosity, which is the definition of unsaturated conditions, and they make up the subject of vadose zone hydrogeology.
- At any point above the water table, in the vadose zone, the effective stress is approximately equal to the total stress, as proven by Terzaghi's principle.
- In speleology, cave passages formed in the vadose zone tend to be canyon-like in shape, as the water dissolves bedrock on the floor of the passage.
- In hindsight, even the department publicly acknowledges that it erred in studying what is called the vadose zone _ the relatively dry soil above the water table.
- Moniz said that on a trip to Hanford in January he had explored the problem and found that " the vadose zone is intellectually virgin territory ."
- Movement of water within the vadose zone is studied within soil physics and hydrology, particularly hydrogeology, and is of importance to agriculture, contaminant transport, and flood control.
- ""'Vadose Zone Journal "'is a unique publication outlet for interdisciplinary research and assessment of the Critical Zone, which comprises the Earth s critical living surface down to groundwater.
- The Bureau s environmental research group conducts a wide range of basic and applied research in groundwater resources, vadose zone hydrology, coastal studies, near-surface geophysics, and geologic mapping.
- In terrestrial ecosystems ( such as forests, deserts, and savannas ), the interactions among vegetation, the land surface, the vadose zone, and the groundwater are the main focus.
- The cave section in the vadose zone, the main gallery and the great collapse chamber, are rich with colorful speleothems such as stalactites, stalagmites, draperies, sinterfahne and dripstones.
- The performance of this equation was verified, Results of that validation showed that the finite water-content vadose zone flux calculation method performed comparably to the numerical solution of Richards'equation.
- One of the main complications which arises in studying the vadose zone, is the fact that the unsaturated hydraulic conductivity is a function of the water content of the material.
- This greatly reduces the rate of infiltration and subsequent recharge, but also isolates the aquifer from the vadose zone, subsequent surface-associated losses due to evaporation and evapotranspiration, and potential contamination.
- The codes generally use climate and soil data to arrive at a recharge estimate and use the Richards equation in some form to model groundwater flow in the vadose zone.
- The water content is very important in vadose zone hydrology, where the hydraulic conductivity is a strongly nonlinear function of water content; this complicates the solution of the unsaturated groundwater flow equation.
- The lower boundary of the vadose zone ( the top of the phreatic zone ) is at an elevation of about at low flow, which suggests a low overall hydraulic gradient of 0.007-0.008.
- Research conducted at the Angelo Coast Range Reserve in northern California is comparing the membership and functioning of microbial communities involved in cycling of carbon and other compounds in soils and the vadose zone.
- Water in the vadose zone has a pressure head less than atmospheric pressure, and is retained by a combination of adhesion ( " funiculary groundwater " ), and capillary action ( " capillary groundwater " ).
- This work led to the development of two-and three-dimensional root water uptake models, and was one of the first vadose zone modeling inverse modeling studies that used a three-dimensional description of the subsurface for parameter estimation using distributed computing.
- Fundamental and applied aspects of the field address vadose zone functions, septic drain field site assessment and function, land treatment of wastewater, stormwater, erosion control, soil contamination with metals and pesticides, remediation of contaminated soils, restoration of wetlands, soil degradation, and environmental nutrient management.
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