Variable-rate pumping tests for radially symmetric nonuniform aquifers
نویسندگان
چکیده
منابع مشابه
Variable-Rate Pumping Tests for Radially Symmetric Nonuniform Aquifers
Conventional pumping test methodology is of limited effectiveness for defining the spatial distribution of aquifer properties because of the nonuniqueness of the parameter estimates. Sensitivity analysis can be used to develop a pumping test procedure that significantly decreases the uncertainty associated with the estimated parameters. This approach employs systematic variations in pumpage rat...
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An analytical solution for the case of transient, pumping-induced drawdown in a nonuniform aquifer is presented. The nonuniform aquifer is conceptualized as a uniform matrix into which a disk of anomalous properties has been placed. The disk can be arbitrarily located with respect tothe pumping well. This solution can be used to develop considerable insight concerning the nature of drawdown i n...
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Analytical solutions for constant-rate pumping tests are widely used to infer aquifer properties. In this note, we implement a methodology that approximates the time-varying pumping record as a series of segments with linearly varying pumping rates. We validate our approach using an analytical solution for a sinusoidally varying pumping test. We also apply our methodology to analyze synthetic t...
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An approach for better understanding of the physical implication of estimated aquifer parameters is demonstrated by analysing the pumping test data at Cottam in the Nottingham aquifer, UK. A sensitivity analysis showed that the area represented by the estimated parameters was much smaller than the area covered by the depression cone. After parameters are estimated, further research should be ca...
متن کاملA Stochastic Analysis of Pumping Tests in Laterally Nonuniform Media
Conventional pumping test analysis methodology assumes that aquifer transmissivity is invariant in space. The ramifications. of this assumption are examined for_ hypothetic~! ~nits who~e va~ations in transmissivity are considered to be reasonable representatmns of vanatmns possible m natural systems. The dependence of pumping test transmissivity on spatial (angular and radial) and temporal loca...
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ژورنال
عنوان ژورنال: Water Resources Research
سال: 1990
ISSN: 0043-1397
DOI: 10.1029/wr026i002p00291