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https://hdl.handle.net/20.500.14279/4364
Τίτλος: | Slug Test in Confined Aquifers, the Over‐Damped Case: Quasi‐Steady Flow Analysis | Συγγραφείς: | Koussis, Antonis D. Akylas, Evangelos |
metadata.dc.contributor.other: | Ακύλας, Ευάγγελος | Major Field of Science: | Engineering and Technology | Field Category: | Environmental Engineering | Λέξεις-κλειδιά: | Electronic spreadsheets;Geologic formations;Hydrogeology;Open access publishing | Ημερομηνία Έκδοσης: | 2-Ιου-2012 | Πηγή: | Groundwater, 2012, vol.50, no.4, pp.608–613 | Volume: | 50 | Issue: | 4 | Start page: | 608 | End page: | 613 | Περιοδικό: | National Ground Water Association Journals | Περίληψη: | In the great majority of slug tests performed in wells fully penetrating confined geologic formations, and for over-damped conditions, the response data are evaluated with the transient-flow model of Cooper et al. (1967) when the radial hydraulic conductivity K r and the coefficient of specific storage S s are to be estimated. That particular analytical solution, however, is computationally involved and awkward to use. Thus, groundwater professionals often use a few pre-prepared type-curves to fit the data by a rough matching procedure, visually or computationally. On the other hand, the method of Hvorslev (1951), which assumes the flow to be quasi-steady, is much simpler but yields only K r estimates. In this work, we develop a complete quasi-steady flow model that includes a storage balance inside the aquifer and allows estimating K r and S s simultaneously, through matching of the well response data to a type-curve. The new model approximates the model of Cooper et al. closely and has the practical advantage that its solution type-curves are generated easily using an electronic spreadsheet, so that the optimal fit of data by a type-curve can be readily automated. © 2011, The Author(s). Ground Water | URI: | https://hdl.handle.net/20.500.14279/4364 | ISSN: | 17456584 | DOI: | 10.1111/j.1745-6584.2011.00855.x | Rights: | © 2011, National Ground Water Association. | Type: | Article | Affiliation: | Cyprus University of Technology National Observatory of Athens |
Εμφανίζεται στις συλλογές: | Άρθρα/Articles |
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