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Neveen B. Abdel-Mageed, Ashraf Ghanem, Ibrahim G. Shaaban, Atiyeh Ardakanian, Mohamed M. M. Ibrahem and Mohamed Elgamal
Flow measurements in pipelines using slug tracer have proved highly accurate for turbulent flow. This study experimentally investigates the effectiveness of using a passive rotor on the accuracy of discharge measurements in sewer pipes based on a saline ...
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Andrej Stroj, Maja Bri?ki, Jasmina Lukac Reberski and Tihomir Frangen
Tracer testing is the only method in karst hydrogeology that can definitively determine whether a particular site belongs to a watershed of a particular karst spring. Therefore, it is an essential technique for delineating groundwater basins in karst are...
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Karen Maria Dietmann, Tobias Linke, Markus Reischer and Vicente Rives
Nowadays, the contamination of groundwater and soils by highly hazardous and toxic chlorinated solvents is a global issue. Over the past years, different remediation strategies have been developed, involving injection of reactive solutions and/or particl...
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Emilio Sánchez-León, Carsten Leven, Daniel Erdal and Olaf A. Cirpka
Pumping and tracer tests are site-investigation techniques frequently used to determine hydraulic conductivity. Tomographic test layouts, in which multiple tests with different combinations of injection and observation wells are performed, gain a better ...
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Anna Suzuki, Fuad Ikhwanda, Aoi Yamaguchi and Toshiyuki Hashida
Reinjection is crucial for sustainable geothermal developments. In order to predict thermal performances due to cold-water injection, a method was developed to estimate effective fracture surface areas (i.e., heat transfer areas). Tracer response curves ...
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Lisa Maria Ringel, Márk Somogyvári, Mohammadreza Jalali and Peter Bayer
Fractures serve as highly conductive preferential flow paths for fluids in rocks, which are difficult to exactly reconstruct in numerical models. Especially, in low-conductive rocks, fractures are often the only pathways for advection of solutes and heat...
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Anh T. T. Le, Tamao Kasahara and Varawoot Vudhivanich
Elevated nutrient concentrations are of concern in many agricultural streams. This study observed seasonal variation of inorganic nitrogen concentrations in small drainage streams that receive discharge predominantly from three different types of agricul...
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Jihong Qi, Mo Xu, Xinyu Cen, Lu Wang and Qiang Zhang
The Ancient City in Lijiang of southwestern China was endowed as World Cultural Heritage by UNESCO, and the karst springs located in Black Dragon Pool are its main water source. However, the springs have dried up several times in recent years, which caus...
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Rico Bartak, Wolfgang Macheleidt, Thomas Grischek
Pág. 1 - 13
Tracer and pump tests including depth dependent water sampling were performed to investigate the flow conditions inside and in the vicinity of an injection well with two screen segments used for subsurface iron removal (SIR). A high resolution groundwate...
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