Numerical evaluation of volumetric weighted mean transmissivity estimates in laterally heterogeneous aquifers

Rhode, Katherine L.; Osiensky, James L.; Miller, Stanley M.

doi:10.1016/j.jhydrol.2007.09.026

Cited by 4 publications

(3 citation statements)

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“…A large number of heterogeneous aquifer investigations were conducted using numerical simulations within random transmissivity fields (Meier et al ., ; Sanchez‐Vila et al ., ; Copty and Findikakis, ; Neuman et al ., ; and Rhode et al ., ). The approach has been to generate two‐dimensional heterogeneous transmissivity fields, simulate the transient flow fields using numerical methods and subsequently analyze the results.…”

Section: Application Resultsmentioning

confidence: 97%

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Assessing radial transmissivity variation in heterogeneous aquifers using analytical techniques

Avcı

Şahin

2013

Hydrological Processes

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Abstract:Pumping tests are one of the most commonly used in situ testing techniques for assessing aquifer hydraulic properties. Numerous researches have been conducted to predict the effects of aquifer heterogeneity on the groundwater levels during pumping tests. The objectives of the present work were as follows: (1) to predict drawdown conditions and to estimate aquifer properties during pumping tests undertaken in radially symmetric heterogeneous aquifers, and (2) to identify a method for assessing the transmissivity field along the radial coordinate in radially symmetric and fully heterogeneous transmissivity fields. The first objective was achieved by expanding an existing analytical drawdown formulation that was valid for a radially symmetric confined aquifer with two concentric zones around the pumping well to an N concentric zone confined aquifer having a constant transmissivity value within each zone. The formulation was evaluated for aquifers with three and four concentric zones to assess the effects of the transmissivity field on the drawdown conditions. The specific conditions under which aquifer properties could be identified using traditional methods of analysis were also evaluated. The second objective was achieved by implementing the inverse solution algorithm (ISA), which was developed for petroleum reservoirs to groundwater aquifer settings. The results showed that the drawdown values are influenced by a volumetric integral of a weighting function and the transmissivity field within the cone of depression. The weighting function migrates in tandem with the expanding cone of depression. The ability of the ISA to predict radially symmetric and log-normally distributed transmissivity fields was assessed against analytical and numerical benchmarks. The results of this investigation indicated that the ISA method is a viable technique for evaluating the radial transmissivity variations of heterogeneous aquifer settings.

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Section: Application Resultsmentioning

confidence: 97%

“…Rhode et al . () illustrated that the heterogeneity in the well vicinity is the main mechanism impacting the drawdown data in the early time pumping period and that the volumetric weighted mean transmissivity values at late time do not converge to an asymptotic value if the steady‐state conditions are not satisfied.…”

Section: Introductionmentioning

confidence: 99%

Assessing radial transmissivity variation in heterogeneous aquifers using analytical techniques

Avcı

Şahin

2013

Hydrological Processes

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“…Zhang et al (2007) illuminated that an identical hydrostratigraphic unit could present different deformation characteristics, such as elasticity, elasto-plasticity, and viscoelasto-plasticity, at different sites of the cone of depression or in different periods. By analyzing the volumetric evolution of the cone of depression, Rhode et al (2007) illustrated the nature of volumetric weighted mean transmissivity within the cone of depression as a function of time. Shi et al (2008Shi et al ( , 2012 simulated regional land subsidence and indicated that about 3.08 Â 10 7 m 3 /yr groundwater could be provided as emergency water source while meeting the land subsidence control target of 10 mm/a in Suzhou, China.…”

Section: Introductionmentioning

confidence: 99%

Upward recharge through groundwater depression cone in piedmont plain of North China Plain

Yuan

Song

Han

et al. 2013

Journal of Hydrology

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A New Inverse Solution Assessment for the Recovery Test Using Radial Basis Function Collocation Method

Şahin

2015

Water Resour Manage

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Numerical evaluation of volumetric weighted mean transmissivity estimates in laterally heterogeneous aquifers

Cited by 4 publications

References 20 publications

Assessing radial transmissivity variation in heterogeneous aquifers using analytical techniques

Assessing radial transmissivity variation in heterogeneous aquifers using analytical techniques

Upward recharge through groundwater depression cone in piedmont plain of North China Plain

A New Inverse Solution Assessment for the Recovery Test Using Radial Basis Function Collocation Method

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