Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 7 of 7 for “"recharge zone"”.
-
Numerical Modeling of the Hydrothermal System at East Pacific Rise (EPR) 9 Degrees 50' N Including Anhydrite Precipitation
… the past few decades; however, the location of recharge zones and details of fluid circulation patterns are still largely uncertain. To better understand the effects of anhydrite precipitation on hydrothermal flow paths, we conduct 2-D numerical simulations of hydrothermal circulation at a …
-
Geochemical methods for evaluating the origin and evolution of ground water in volcanic rocks
… and sulfur were successfully used to delineate recharge zones and identify solute sources. Laboratory study of water-rock interactions established the source of solutes and the nature of the chemical reactions that control ground-water chemistry. Most ground water on La Palma originates in a …
-
Altersbetrachtung und numerische Simulation zu Möglichkeit und Grenzen einer prozessorientierten Kontrolle (Frühwarnsystem) der Bewirtschaftung tiefer Grundwässer
… (1995). They have shown that, once the passive recharge zone of a groundwater system is penetrated by pumping wells and the duration and/or rate at which these are operated exceeds a certain threshold, the natural hydrogeologic barrier between the passive and the active recharge zone gets …
-
A Parameterized Approach to Partitioning Between Focused and Diffuse Heat Output and Modeling Hydrothermal Recharge at The East Pacific Rise 9°50´N
… spatial extent and distribution of hydrothermal recharge. These are the main topics of investigation in this thesis. To address these issues, I first use a single-pass modeling approach using a variety of observational data in a simple parametric scale analysis of a hydrothermal vent field to …
-
The Hydrogeologic effects of fly ash utilization in concrete at Coal Creek Station, Underwood, North Dakota
… consequently the occurrence of fill influences recharge rates and ground water flow patterns. </p><p> A comprehensive water monitoring network encompassing surface water, unsaturated zone water, and saturated zone water was designed for the site. Surface water quality was documented using a …
-
Identification of potential groundwater recharge zones: a case study of KwaZulu-Natal, South Africa
… sensing to demarcate groundwater potential recharge zones in the uMhlathuze catchment and Maputaland region using various pertinent parameters. The AHP approach and Catastrophe theory were used to determine acceptable zones by assigning weights to the 10parametersand their sub-criteriafor …
-
Seasonal geochemical and isotopic investigations for sustainable water resource managementa case study of the pordenone plain (NE Italy)
… the study site, enabling the identification of recharge areas, characterization of hydrofacies from a geochemical-isotopic perspective, and the study of their evolution over time. iii) Seasonal geochemical-isotopic monitoring: during this two-year phase, representative samples were collected …