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all geography including DSDP/ODP Sites and Legs
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Oligocene
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Primary terms
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carbon
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Oligocene
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
observation wells
Transport and Fate of Nitrate in a Saturated Buffer Zone as Assessed With a Chloride Tracer Test Open Access
Possible Fault Communication between the Memphis Sand Aquifer and the Mississippi River Available to Purchase
Estimating Static, Dynamic and Monsoon Groundwater Reserves in a Dense Well Network of Basaltic Terrain, Central India Available to Purchase
New Data on Hydrogeochemical and Isotopic Composition of Natural Waters of the Baidar Valley (Crimean Peninsula) Available to Purchase
Installation of Utility Trench Wells Using Vacuum Techniques for Urban Groundwater Investigation Available to Purchase
Impact Assessment of Artificial Recharge Structures on Kakatiya University Campus, Warangal Urban District, Telangana Available to Purchase
Evaluation of Groundwater Vulnerability to Pollution using GIS Based DRASTIC Method in Koradi, India - A Case Study Available to Purchase
Hydrology of a Southern Appalachian Hypocrene Spring-Fed Fen Available to Purchase
Fluvial architecture and four-dimensional saturation modeling of a steam flood: Kern River field, California Available to Purchase
Variability in Groundwater Flow and Chemistry in the Houzhai Karst Basin, Guizhou Province, China Available to Purchase
Revisiting groundwater carbon fluxes to the ocean with implications for the carbon cycle Available to Purchase
Multilevel monitoring of the Edwards and Trinity Aquifers Available to Purchase
ABSTRACT Multiport monitor wells have been used by the Barton Springs/Edwards Aquifer Conservation District (BSEACD) to study complex, multilayer, and stacked aquifers in central Texas. Much of the data from water wells that are used for hydrogeological studies are of limited use owing to the thickness of the aquifers, vertical variation in hydraulic properties, and the often-uncertain completion of the wells. To address these concerns, hydrogeologists and engineers have employed various methods, such as installation of nested wells, multilevel completions in a single borehole, and multiport wells. The BSEACD has used multiport wells to determine vertical variations in an aquifer and the hydraulic relationships between stacked aquifers. With multiport wells, properties such as hydraulic head, temperature, hydraulic conductivity, and water quality of discrete units within an aquifer can be determined. The use of multiport wells has shown how portions of the Upper Trinity lithologic units are hydraulically connected to the overlying Edwards lithologic units, and how the Edwards Aquifer is hydraulically isolated from the Middle and Lower Trinity Aquifers.