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dc.contributor.authorYeh, Hund-Deren_US
dc.contributor.authorChang, Chun-Haoen_US
dc.contributor.authorChen, Yen-Juen_US
dc.date.accessioned2014-12-08T15:08:51Z-
dc.date.available2014-12-08T15:08:51Z-
dc.date.issued2009-09-01en_US
dc.identifier.issn0733-9437en_US
dc.identifier.urihttp://dx.doi.org/10.1061/(ASCE)IR.1943-4774.0000064en_US
dc.identifier.urihttp://hdl.handle.net/11536/6747-
dc.description.abstractA patchy aquifer or an aquifer with a finite thickness skin can be considered as a radial two-zone aquifer system, which can be characterized by five parameters, i.e., the thickness of the first zone and four aquifer parameters including the transmissivity and storage coefficient for each of the first and second zones. This paper proposes an approach based on an analytical solution of a constant-flux pumping in a confined two-zone aquifer and the simulated annealing algorithm to determine the five parameters simultaneously. The estimated results for the five parameters are fairly good even assuming the aquifer as a single-zone system at the beginning of the data analysis. The estimated results indicate that the first-zone parameters are much more difficult to accurately identify than the second-zone parameters due to insufficient early-time data and high correlation of the sensitivities among the first-zone parameters. However, the problem of inaccurate results obtained at the first-zone can be significantly improved if more densely temporal drawdown measurements are used.en_US
dc.language.isoen_USen_US
dc.titleAquifer Parameter Estimation for a Constant-Flux Test Performed in a Radial Two-Zone Aquiferen_US
dc.typeArticleen_US
dc.identifier.doi10.1061/(ASCE)IR.1943-4774.0000064en_US
dc.identifier.journalJOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING-ASCEen_US
dc.citation.volume135en_US
dc.citation.issue5en_US
dc.citation.spage693en_US
dc.citation.epage703en_US
dc.contributor.department環境工程研究所zh_TW
dc.contributor.departmentInstitute of Environmental Engineeringen_US
dc.identifier.wosnumberWOS:000269847600019-
dc.citation.woscount1-
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