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 12 of 12 for “"specific storage"”.
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Improving groundwater flow model parametrization techniques
… calibration of the additional parameters such as specific storage in addition to standard hydraulic conductivity. Another complication of the transient modelling is a need to define transient boundary conditions. In settings with seasonal recharge variations, the spatial and temporal variation in …
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HYDROGEOLOGIC PROPERTY ESTIMATION IN PLATE BOUNDARY OBSERVATORY BOREHOLES USING TIDAL RESPONSE ANALYSIS
… and 1_10-4 – 9_10-1 m2s-1, respectively, whereas specific storage values are ~1_10-6 m-1. Values are generally consistent through time, reasonable given lithology, and are comparable to other regional studies and traditional aquifer test determinations available for one borehole. No obvious trends …
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Groundwater Modeling and Hydrogeological Parameter Estimation: Potomac Aquifer System, SWIFT Research Center
… (transmissivity, hydraulic conductivity, specific storage, and storage coefficient). Two sets of data were analyzed from before and after TW-1 was rehabilitated to account for the change in the flow distribution to each screen in TW-1. Comparing the results to past literature, the …
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Characterization and modeling of land subsidence due to groundwater withdrawals from the confined aquifers of the Virginia Coastal Plain
… have been ineffective at adequately quantifying storage properties or matching historical water levels in environments experiencing land subsidence. In the southeastern Coastal Plain of Virginia, high-sensitivity borehole pipe extensometers were used to measure 24.2 mm of total compaction at …
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Rock physics investigations using pressure oscillations
… for elastic properties, and pore volumometry for storage capacity. In addition to time, the separate set of measurements require either multiple samples or subjecting the same sample to multiple tests. I modified the oscillating pore pressure method to allow for an experiment that is capable of …
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Analysis of a Multi-Aquifer System in the Southern Coastal Plain of Virginia by Trial and Error Model Calibration to Observed Land Subsidence
… system can be estimated including the elastic specific storage of the aquitards and aquifers and the inelastic storage of the aquitards. The total cumulative change in aquifer system thickness estimated by the MODFLOW subsidence package can be compared to the observed total cumulative change in …
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Permeability modifying processes : thermal cracking and crack healing of geomaterials
… in Awibengkok, Indonesia. Permeability (k) and specific storage capacity were measured by the oscillating flow method in a wide range permeameter, at room temperature, with effective pressures between 15 MPa and 95 MPa, before and after thermal cracking. The samples were cracked at 150 and 300 …
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Characterization of Subsurface Heterogeneity Using Transient Hydraulic and Tracer Tomography
… three dimensional hydraulic conductivity and specific storage fields. We first analyzed the cross correlation between transient head data and hydraulic parameters and covariance of transient heads using a hypothetical one dimensional aquifer. This analysis led to an efficient way to interpret …
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An Economic Study of Carbon Capture and Storage System Design and Policy
Carbon capture and storage (CCS) and a point of electricity generation is a promising option for mitigating greenhouse gas emissions. One issue with respect to CCS is the design of carbon dioxide transport, storage and injection system. This dissertation develops a model, OptimaCCS, that combines …
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Quantifying high-resolution hydrologic parameters at the basin scale using InSAR and inverse modeling, Las Vegas Valley, NV
… (T), elastic and inelastic skeletal storage coefficients (Ske and Skv) of the developed-zone aquifer and conductance (CR) of the basin-fill faults for the entire Las Vegas basin, and to investigate future trends of land subsidence in Las Vegas Valley. This dissertation consists of …
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Accurate Cylindrical-Coordinate Numerical Models For The Analysis Of Hydrologic Tests
… the overall influence of the skin are specific storage and skin thickness. The first discovery suggests that extensive development activities can essentially eliminate any well skin impacts. Other factors such as partial penetration, the placement of the well screen, and anisotropy play …
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Decision models for fast-fashion supply and stocking problems in internet fulfillment warehouses
… all aspects of the modern supply chain. Specifically, accelerated product flows and wide spread information sharing across the supply chain have generated new sets of decision problems. This research addresses two such problems. The first focuses on fast fashion supply chains in which …