soil water monitoring Articles
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Time lapse resistivity/IP survey case study
Changes in underground electric resistivity is typically resulted by the variations in groundwater conduction and soil water content. Monitoring this variation will help operator gain a better understanding of the underground water distribution over time. This may facilitates operators monitor abnormal underground or structural behaviour. Time lapse resistivity survey is therefore very useful ...
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Monitoring network for Noorderbrug infrastructure project - Case Study
The Noorderbrug project in Maastricht has improved the flow of traffic that has to cross the Meuse river on the north side of the city. As Senior Advisor at Antea, Bjorn Vink was closely involved in this infrastructure project in the south of the Netherlands, which used Eijkelkamp Soil & Water equipment. ‘Because I have previously been involved in similar projects in and around the ...
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Study on extinction depth and steady water storage in root zone based on lysimeter experiment and HYDRUS-1D simulation
HYDRUS-1D was combined with lysimeter experiments to study extinction depth and steady water storage in root zone (Ws) of groundwater evaporation (ETgw) under winter wheat and silt soil. The measured soil water contents and daily ETgw with various groundwater depths were used to calibrate and validate the parameters in HYDRUS-1D. In total, 13 groundwater depths ranging from 0.5 to 5.0 m were ...
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Unique Chinese wetland park monitors water 24/7 - Case Study
Project background The Deyang area in southwest China was struck hard by an earthquake in 2008. Since then, reconstruction has taken place with a tremendous speed and the urban population grew exponentially. Due to this urbanisation, the city’s water supply system can not meet its rapidly growing water demand. Currently, two-thirds of all Chinese cities don’t have sufficient water ...
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Unique Chinese wetland park monitors water 24/7
Project background The Deyang area in southwest China was struck hard by an earthquake in 2008. Since then, reconstruction has taken place with a tremendous speed and the urban population grew exponentially. Due to this urbanisation, the city’s water supply system can not meet its rapidly growing water demand. Currently, two-thirds of all Chinese cities don’t have sufficient water ...
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Surfactant-induced unsaturated flow: Instrumented horizontal flow experiment and hysteretic modeling
Organic compounds with surface-active properties reduce the surface tension of water and can change soil water contact angles depending on their aqueous concentration. The presence of such compounds in the unsaturated zone affects soil moisture characteristics and unsaturated hydraulic conductivity relations, and can cause flow as a result of induced soil water pressure gradients. Some studies ...
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Evaluating nonpoint source critical source area contributions at the watershed scale
Areas with disproportionately high pollutant losses (i.e., critical source areas [CSAs]) have been widely recognized as priority areas for the control of nonpoint-source pollution. The identification and evaluation of CSAs at the watershed scale allows state and federal programs to implement soil and water conservation measures where they are needed most. Despite many potential advantages, many ...
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Using hydrological simulation to detect human-disturbed epoch in runoff series
Runoff in major rivers in China has been decreasing in recent decades, mainly due to climate change and human activity. River basin managers have a critical interest in detecting and diagnosing non-stationaries in runoff time series. Here we use a rainfall runoff model-based approach to identify the human-disturbed periods of the record. The method is applied to the Kuye River catchment, ...
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Catchment delineation and morphometric analysis using geographical information system
The geographical information system (GIS) has emerged as an efficient tool in delineation of drainage patterns of watershed planning and management. The morphometric parameters of basins can address linear, areal and relief aspects. The study deals with the integrated watershed management of Baliya micro-watersheds, located in the Udaipur district of Rajasthan, India. Morphometric analysis in ...
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Catchment delineation and morphometric analysis using geographical information system
The geographical information system (GIS) has emerged as an efficient tool in delineation of drainage patterns of watershed planning and management. The morphometric parameters of basins can address linear, areal and relief aspects. The study deals with the integrated watershed management of Baliya micro-watersheds, located in the Udaipur district of Rajasthan, India. Morphometric analysis in ...
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Gamma-Radiometric assessment of soil depth across a landscape not measurable using electromagnetic surveys
Soil depth affects plant available soil water storage capacity (PAWC). This storage capacity is important for grain yield, deep drainage, and nitrate leaching in dryland environments but is difficult to measure directly on a broad scale. Measurements of ECa provide a means of estimating soil depth at spatial resolution of <50 m when sufficient contrast in conductivity exists between the ...
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Groundwater data essential for safety Dutch flood protection works - Case Study
Client Waterschap Vallei en Veluwe Country The Netherlands The Grebbedijk is a levee located between the municipalities of Wageningen and Rhenen in the Netherlands and protects 250,000 residents in the Gelderse Valley adjacent to the waters of the Lower Rhine (Nederrijn). The Grebbedijk does not comply with the latest strict safety standards. In 2023 the more-than-5-kilometre-long levee will ...
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Soil Physics Workshop – Syllabus
Soil Hydrology with the Stevens HydraProbe Soil Sensor This year at the Meteorological Technology World Expo 2018 event in Amsterdam Stevens is excited to present a 2-hour Soil Physics Workshop. The interactive lecture will be hosted by Steven’s own Soil Scientist & Geochemist / Certified Professional HydrologistKeith Bellingham. Course Summary Knowledge of soil moisture and the ...
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What Thickness Pond Liner is Best
Geomembrane is a good impermeable material with a thickness ranging from 0.2mm to 3mm. Its main component is made of high-density polyethylene material, which has good impermeability, elongation, and corrosion resistance. The performance has a larger operating temperature range and a longer service life. Geomembrane is also called anti-seepage geomembrane or waterproof board, which can be used ...
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How to investigate mercury in the oceans?
Mercury is a highly toxic metal that affects the environment and can endanger people's health, as a powerful neurotoxin. The combustion of coal, waste and fuel are releasing hundreds of tons of heavy metal into the atmosphere annually, and its sediment enters to soil and water. Mercury measurements are part of the EU project "Global Mercury Observation System". The long-term goal of this ...
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HDPE Pond Liners for Large Ponds in Indonesia
HDPE pond liners for fish ponds are the commonly used Anti-seepage single-layer high density geomembrane liner. The HDPE pond liners for fish ponds has smooth surface that can effectively prevent fish from escaping during the rainy season, especially like lobster, crab, fish. Laying a layer with a thickness of 0.5 mm of HDPE pond liners for fish ponds or more (different thicknesses can be ...
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Measuring the Soil Water Retention Curve with the Stevens pF Matric Potential Sensor and Hydra Probe II Soil Moisture Sensor
The Stevens pF Sensor is a unique matric potential probe, which is used to measure the soil water potential of a soil - the force with which water is held within the soil and how much energy is needed to overcome this force to extract water from the soil. Unlike traditional tensiometers such as gypsum blocks, the Stevens pF Sensor utilizes a patented heating element to measure soil water ...
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HDPE Geomembrane Pond Liner for Shrimp Pond Project in Kenya
Case Study: Location: Kenya Product:0.75mm HDPE Geomembrane Pond Liner Application: Shrimp Pond Project Status Quo: Kenya faces the Indian Ocean to the east, with many ports and pollution-free, suitable for the development of marine fisheries. To the southwest is Lake Victoria, which is the largest freshwater lake in Africa. Kisumu, an important town in the southwest, is an important fishery base ...
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CEPHaS Project Briefing - GP2 Data Logger - Case Study
Recent Activities in Soil Physics The CEPHaS project is a joint undertaking between colleagues in Zambia, Zimbabwe, Malawi and the UK to strengthen our shared capacity to study how conservation agriculture practices affect the behaviour of water in soil, crop and groundwater systems. Key to this is the use of new methods to study soil water, both in the field and the laboratory. The University ...
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Response of rock-fissure seepage to snowmelt in Mount Taihang slope-catchment, North China
The complex physiographic and hydrogeological systems of mountain terrains facilitate intense rock-fissure seepages and multi-functional ecological interactions. As mountain eco-hydrological terrains are the common water sources of river basins across the globe, it is critical to build sufficient understanding into the hydrological processes in this unique ecosystem. This study analyzes ...
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