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Showing 1 to 12 of 12 for “"Carbonate aquifer"”.
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Carbon Dioxide Flooding Induced Geochemical Changes in a Saline Carbonate Aquifer
… for geologic sequestration in either deep saline aquifers or depleted oil reservoirs. Little is known about the geochemical reactions that take place when supercritical carbon dioxide is injected into deep saline aquifers at geologic conditions similar to those found in potential sequestration …
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Measuring groundwater flow system variability in a fractured carbonate aquifer using fibre optic distributed temperature sensing
… of groundwater flow through a complex carbonate aquifer and identify how this variability relates to the local flow system. To accomplish this, innovative field methods were applied at a research site in Guelph, Ontario with nine closely-spaced boreholes spanning the full thickness of …
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The distribution of vertical groundwater flow in the saturated zone of the Yucca Mountain area: A cross-sectional finite element model
… model includes an upper volcanic and lower carbonate aquifer separated by an aquitard with an alluvial aquifer down-gradient. Results indicate that some groundwater flows beneath the high-gradient (low conductivity) zone through the carbonate aquifer. The volcanic aquifer, south of the high …
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Possible Groundwater Denitrification in the Decorah Formation (Middle Ordovician)
… of Middle Ordovician age, overlain by an upper carbonate aquifer, that is contaminated with nitrate. The shale may contain electron donors for denitrification in the forms of organic carbon and sulfur minerals. </p><p>Three shallow monitoring wells were installed and sampled, and sediment …
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A radiocarbon method and multi-tracer approach to quantifying groundwater discharge to coastal waters
… fresh, terrestrially driven fluxes from confined aquifers. This A14C method was tested during five sampling periods from November 1999 to April 2002 in two small estuaries in southeastern North Carolina. In coastal North Carolina, fresh water artesian discharge is characterized by a low A14C …
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Hydrogeology and Chemical Characterization of Hydrocarbon in Domestic Water Wells, Rancho Villa Subdivision, Rogers, Arkansas
… a fuel spill and is not naturally occurring. The carbonate aquifer in the study area is karstified, with anisotropic flow. The contaminant has persisted in the area for the past six years and is localized in the Rancho Villa community. No reported spill sites are near the community, and no …
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Lakes and Groundwater of the Rieti Basin, Central Italy: Hydrochemistry, Paleolimnology, and Seismologic Influences
… springs representing local and regional aquifers were sampled as a means of comparing and evaluating the chemical data from the lakes, including Vicenna Riara (VIC), an alluvial aquifer which has hydrochemistry similar to LUN, and Peschiera (PES), which flows from a major regional …
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Karst Hydrogeology of the Haney Limestone, South-Central Kentucky
… on the Mammoth Cave System and related caves and aquifers. However, slightly higher in the stratigraphic section than Mammoth Cave, the Haney Limestone is a locally important but less well studied carbonate aquifer. This research provides the most comprehensive synthesis to date of the karst …
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A radiocarbon method and multi-tracer approach to quantifying groundwater discharge to coastal waters
… fresh, terrestrially driven fluxes from confined aquifers. This Δ14C method was tested during five sampling periods from November 1999 to April 2002 in two small estuaries in southeastern North Carolina. In coastal North Carolina, fresh water artesian discharge is characterized by a low Δ14C …
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Uranium in groundwater and its potential as a natural contaminant in the Cherokee Basin, southeastern Kansas
… circumstances depending on redox status, carbonate speciation, and alkalinity. The sedimentary succession in the Cherokee Basin in southeastern Kansas includes several black shales interbedded with limestones. Gamma-ray logs from oil and gas wells revealed a very high level of …
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Assessment and Conceptualization of Groundwater Flow in the Edwards Aquifer Through the Knippa Gap in Uvalde County, Texas
<p>The Edwards aquifer is one of the major regional karst aquifers in the United States, with an average withdrawal of 950 million liters per day (L/d). This investigation focuses on the connection between the Uvalde pool and the San Antonio pool of the Edwards aquifer, known as the Knippa Gap, …
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Hidrogeología del sistema acuífero de los manantiales de Gormaz
… its base flow by several m3/s as it flows over carbonate outcrops in a short stretch of its headwaters. This increment in flow is especially important during low water periods, when the majority of the river’s base flow comes from springs in this reach that discharge groundwater from the Gormaz …