Essays about: "tracer tests"

Showing result 6 - 10 of 13 essays containing the words tracer tests.

1. 6. Stream Restorationand Mitigation of Nitrogen in the Hyporheic zone : Interpretation of tracer tests from Tullstorps brook

   University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

   Author : Sunna Mjöll Sverrisdóttir; [2019]
   Keywords : Hyporheic Zone; Stream Restorations; Nitrate Mitigation; Tracer test; Solute Transport; Eutrophication; Nitrogen;

   Abstract : Streams and rivers have been modified in the past centuries for agricultural purposes. The Baltic Sea suffers from problems regarding eutrophication. Regulations of point-sources have decreased nutrient levels, but for a scattered source of nutrient pollution, streams are important. READ MORE

3. 7. Groundwater flow paths in fractured crystalline bedrock : Electromagnetic VLF measurements and modelling of a groundwater basin in Svanberga, Sweden

   University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

   Author : Rasmus Thunell; [2018]
   Keywords : Groundwater; modelling; geophysics; comsol; VLF;

   Abstract : Sweden is a country with a relatively high number of private wells, where about 1.2 million inhabitants in permanent housing and an equal amount in summer housing relies on private wells as their drinking water supply. At the same time the market for drinking water treatment products is unregulated regarding quality and requirements are needed. READ MORE

4. 8. Flow Paths in the Húsmúli Reinjection Zone, Iceland

   University essay from Uppsala universitet/Luft-, vatten- och landskapslära

   Author : Sigrún Tómasdóttir; [2018]
   Keywords : Húsmúli; Hellisheiði Power Plant; geothermal reinjection; tracer tests; numerical modeling; Húsmúli; Hellisheiði kraftverk; geotermisk injektion; spårtest; numerisk modellering;

   Abstract : Reinjection of spent geothermal fluids has become common practise in geothermal power plants. Reinjection can, despite being mostly beneficial, have unwanted effects such as cooling of nearby production wells and injection-induced earthquakes. READ MORE

5. 9. Investigation of the origin of salt in coastal aquifers and assessment of metals in the aquatic environment : River Drin and River Vjosa, Albania

   University essay from KTH/Vatten- och miljöteknik

   Author : Maximilian von Bahr; Ida Gomez Bergström; [2018]
   Keywords : Albania; aquifers; bioavailability; Drin; groundwater; isotope analysis; metal speciation; river; saltwater intrusion; Vjosa;

   Abstract : The preservation of freshwater aquifers is one important task of managing natural resources today. Intrusion of saltwater from the sea into the groundwater might occur in coastal-near areas and can affect the freshwater quality negatively. READ MORE

6. 10. River-Aquifer Interaction in the Uppsala Esker - a Modelling Study of a Proposed Drinking Water Production site

   University essay from Uppsala universitet/Luft-, vatten- och landskapslära

   Author : Kalle Kjellander; [2018]
   Keywords : Surface water-groundwater interactions; MODFLOW-model; Numerical model; Induced infiltration; Hydraulic conductivity; Grund- och ytvattenutbyte; MODFLOW-modell; numerisk modell; inducerad infiltration; hydraulisk konduktivitet;

   Abstract : The Swedish municipalities of Gävle and Älvkarleby need new sources of drinking water as the population grows. Gästrike vatten AB has employed the consultant firm Midvatten AB to assess the possibility of a new groundwater extraction site on the Uppsala esker between Älvkarleby and Skutskär in northern Uppland county. READ MORE