Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/44679
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dc.contributor.authorLu, H.Y.en_US
dc.contributor.author彭宗仁zh_TW
dc.contributor.authorLiu, T.K.en_US
dc.contributor.authorChen, W.F.en_US
dc.contributor.authorPeng, T.R.en_US
dc.contributor.authorWang, C.H.en_US
dc.contributor.authorTsai, M.H.en_US
dc.contributor.authorLiou, T.S.en_US
dc.date2008zh_TW
dc.date.accessioned2014-06-06T08:13:02Z-
dc.date.available2014-06-06T08:13:02Z-
dc.identifier.issn1431-2174zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/44679-
dc.description.abstractAquifers are generally composed of highly permeable layers that can conduct a considerable amount of groundwater. Traditionally, aquifer units are correlated through the concept of lithostratigraphy. For low-permeable aquifers, it is difficult to define the spatial distribution of hydrogeological units, and this study attempts to use geochemical modeling to identify the groundwater flow paths in an area of Taiwan. Multiple geochemical analyses, including groundwater chemistry; stable isotopic compositions of hydrogen, oxygen and carbon; and radiocarbon contents were performed. Using these parameters as the constraints of geochemical models, the hydraulic connection was examined between pairs of possibly interlinked wells along four selected cross sections, and the conceptual groundwater model was accordingly established. The resultant model suggests that the hydraulic connection between aquifers should be correlated with the concept of chronological stratigraphy, especially for low-permeable, unconsolidated aquifers. Using Darcy's law, the hydraulic conductivities of the fine-sand aquifers were estimated to be between 3.14x10(-5) and 1.80x(-4) m/s, which are roughly one order of magnitude higher than those derived by in situ pumping tests. The substantial extraction of groundwater over a long period in the studied area could accelerate groundwater flow, leading to an overestimation of the aquifer permeability.en_US
dc.language.isoen_USzh_TW
dc.relationHydrogeology Journalen_US
dc.relation.ispartofseriesHydrogeology Journal, Volume 16, Issue 1, Page(s) 139-154.en_US
dc.relation.urihttp://dx.doi.org/10.1007/s10040-007-0209-6en_US
dc.subjectaquifer correlationen_US
dc.subjectchronostratigraphyen_US
dc.subjectgeochemical modelingen_US
dc.subjectgroundwater ageen_US
dc.subjectTaiwanen_US
dc.subjectmass-transferen_US
dc.subjectgroundwateren_US
dc.subjectbasinen_US
dc.subjectwateren_US
dc.subjectareaen_US
dc.subjectevolutionen_US
dc.subjectwellsen_US
dc.subjectsouthen_US
dc.titleUse of geochemical modeling to evaluate the hydraulic connection of aquifers: a case study from Chianan Plain, Taiwanen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1007/s10040-007-0209-6zh_TW
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