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1	The effect of bank seepage on riparian hydrology and nitrogen biogeochemistry / Duval, Timothy Peter. January 2005 (has links) Thesis (M.Sc.)--York University, 2005. Graduate Programme in Geography. / Typescript. Includes bibliographical references (leaves 133-138). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url%5Fver=Z39.88-2004&res%5Fdat=xri:pqdiss &rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR11778
2	Charakter proudění a střední doba zdržení vody v nesaturované zóně nad Ochozskou jeskyní (Moravský kras) / Flow and mean residence time in karst unsaturated zone (Ochoz Cave, Moravian Karst) Vysoká, Helena January 2012 (has links) Flow and mean residence time in epikarst and unsaturated zone was studied above the Ochoz cave in the Moravian Karst. I studied various flow components with different residence time in unsaturated zone and the influence of soil and epikarst on seepage composition and residence time by means of several methods (longterm monitoring of conductivity, flowrate of seepage and soil water, use of environmental tracers - 18 O, 3 H, CFC and SF6, flow into the soil and detailed sampling during intesive rain events). Seepage sites Kašna in the Rudické propadání cave system and Mapa Republiky in Býčí skála were reference localities in unsaturated zone. For comparison I modeled residence time in saturated zone: at Kaprálka outlet close to the Ochoz cave, at Stará řeka (Rudické propadání) and Konstantní přítok (Amatérská cave). Mean residence time in unsaturated zone above the Ochoz cave reaches 7 - 20 years, while it is only few months in the soil (1 - 8 months, depending on the depth). At Kašna seepage site, the reasidence time is similar to the Ochoz cave - about 18 - 20 years, at Mapa republiky seepage site, it reaches 150s year due to unusual geological settings. Mean residence time in order of 10 - 20 years corresponds to storativity values (0.6 % in average) calculated from parallel water level recession...
3	Auslaugung anorganischer Schadstoffe aus Abfall- und Altlastmaterialien / Vergleich von Lysimeterversuchen mit Ergebnissen gängiger Prognoseverfahren / Leaching of inorganic pollutants from waste and dump materials / Comparison of lysimeter tests with results from well known leaching tests Bode, Ralf 26 April 2005 (has links) No description available. 550 Geowissenschaften Mathematics and Computer Science Sickerwasserprognose Abfall Altlastmaterialien Lysimeter Anorganische Schadstoffe Seepage water waste dump-materials lysimeter inorganic pollutants 38.32 38.86 VJC 110: Geochemie des Grundwassers Porenwassers Unterirdische Gewässer}
4	Investigating the Need for Drainage Layers in Flexible Pavements Masoud Seyed Mohammad Ghavami (6531011) 10 June 2019 (has links) <p>Moisture can significantly affect flexible pavement performance. As such, it is crucial to remove moisture as quickly as possible from the pavements, mainly to avoid allowing moisture into the pavement subgrade. In the 1990s the Indiana Department of Transportation (INDOT) adopted an asphalt pavement drainage system consisting of an open-graded asphalt drainage layer connected to edge drains and collector pipes to remove moisture from the pavement system.</p> <p>Over the intervening two decades, asphalt pavement materials and designs have dramatically changed in Indiana, and the effectiveness of the pavements drainage system may have changed. Additionally, there are challenges involved in producing and placing open-graded asphalt drainage layers. They can potentially increase costs, and they tend to have lower strength than traditional dense-graded asphalt pavement layers. </p> <p>Given the potential difficulties, the overall objective of this research was to evaluate the effectiveness of the INDOT’s current flexible pavement drainage systems given the changes to pavement cross-sections and materials that have occurred since the open-graded drainage layer was adopted. Additionally, the effectiveness of the filter layer and edge drains were examined.</p><p><br>Laboratory experiments were performed to obtain the hydraulic properties of field-produced asphalt mixture specimens meeting INDOT’s current specifications. The results were used in finite element modeling of moisture flow through pavement sections. Modeling was also performed to investigate the rutting performance of the drainage layers under various traffic loads and subgrade moisture conditions in combination with typical Indiana subgrade soils. The modeling results were used to develop a design tool that can assist the pavement designer in more accurately assessing the need for pavement drainage systems in flexible pavements.<br></p> Civil Geotechnical Engineering Construction Engineering Engineering Practice pavement Asphalt Drainage finite elements Abaqus infiltrations water flows seepage water Mechanistic studies Stress Analysis coupled stress and seepage rutting performance soil subgrade settlement open-graded aggregate permeable base filter permeability Water retention curve Hydraulic conductivity Transient flow Steady States flow

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