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.
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Showing 1 to 9 of 9 for “"groundwater-sampling"”.
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Field comparison of groundwater sampling methods
Most ground-water sampling methods require the investigator to purge a large quantity of stagnant water from a well prior to collecting a sample. The use of in situ ground-water sampling devices which minimize or eliminate the need for purging would help to alleviate these problems. In this field …
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Amonio anomalių koncentracijų Klaipėdos rajono individualių gręžinių požeminiame vandenyje įvertinimas /
… issue of anomalous ammonium concentrations in groundwater within the Klaipėda district. Highlighting the dangers posed by ammonium pollution to human health and ecological systems, the study analyzes hydrogeochemical conditions and ammonium levels in individual boreholes across the district. …
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Comparative examination of Lake Spokane groundwater for nutrient discharge by residential development influence
… source of nutrient contamination to shoreline groundwater and as a possible influence on algae growth in Lake Spokane. Surface water and groundwater samples from hand-driven piezometers were collected from three residential development categories. The three categories were distinguished by …
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Forecasting groundwater contaminant plume development using statistical and machine learning methods
… in predicting the fate and transport of groundwater contaminants is the inherent geologic heterogeneity of the subsurface. Contaminant movement has been primarily modeled by simplifying the geology and accepting assumptions to solve the advection- dispersion-reaction equation. With the …
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Some contributions to the hydraulic characterization of fractured bedrock formations
… has led to developments in bedrock monitoring, groundwater sampling, formation hydraulic testing, and the conceptual model of formation hydraulics. This dissertation presents a field device, two hydraulic test methods, and one method of hydraulic test analysis developed to assist in the …
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The geohydrology of the Swartkops River Basin : Uitenhage Region, Eastern Cape
A hydrocensus of all groundwater users in the Swartkops River Basin was conducted in 1992 and 1993 to assess the occurrence and quality of groundwater in the Basin, as well as the characteristics of the various aquifers in the Basin. The extent of pollution of the groundwater reserves was noted. …
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NUTRIENT IMPACT OF SWINE CAFO WASTE ON SURFACE WATER AND GROUNDWATER IN EASTERN NORTH CAROLINA
… nitrogen and/or phosphorus may leach into groundwater or run off into streams, potentially degrading water quality located hydraulically downgradient of SFs. The goal of this study was to analyze nutrient concentrations, transport, and physiochemical parameters of wastewater and water …
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Untersuchungen zum Vorkommen und Transportverhalten von Partikeln in Grundwässern und Abschätzung ihrer Relevanz für den Schadstofftransport
Im Grundwasser mobile Feststoff-Partikel stehen im Verdacht, den Transport schwerlöslicher Schadstoffe zu begünstigen. Die Partikel-Konzentration im Wasser lässt sich aber nur mittels einer aufwändigen Probenahme bestimmen. Vor diesem Hintergrund wurden im Rahmen dieser Arbeit Feld- und …
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Geohydrologic evaluation of a proposed coal-ash disposal site near Mandan, North Dakota
… 30-40 feet below the ground surface. The groundwater beneath the proposed site is flowing north-northeast. Potentiometric levels indicate that there is a strong downward component of groundwater flow over the entire proposed disposal site (recharge area). </p><p> Chemical analysis of water …