Spatiotemporal modelling of groundwater flow and nitrate contamination in an agriculture-dominated watershed

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dc.authorid0000-0002-7035-7078en_US
dc.contributor.authorEryiğit, Mirac
dc.contributor.authorEngel, Bernard
dc.date.accessioned2023-05-30T12:28:54Z
dc.date.available2023-05-30T12:28:54Z
dc.date.issued2022en_US
dc.departmentBAİBÜ, Mühendislik Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractIn this study, both groundwater flow and nitrate transport were simulated in the Upper White River Watershed (Indiana, US) dominated by agricultural production. MODFLOW and MT3DMS were used for groundwater flow and contaminant transport modelling of the watershed under transient conditions. The input files for MODFLOW and MT3DMS were obtained by the GMS groundwater simulator. Model simulations were performed for 25 years between 1995 similar to 2019 with one-year intervals. Groundwater observation data (hydraulic heads and nitrate concentrations) for 1995 similar to 2013 and 2014 similar to 2019 were used for the model calibration and validation, respecttively. A heuristic optimization model based on the modified Clonal Selection Algorithm (a class of Artificial Immune Systems) was improved for calibration of the groundwater contaminant transport model. MODFLOW and MT3DMS were linked with the algorithm and run in MATLAB. Based on land use/cover, recharge and recharge nitrate concentrations were calibrated while other groundwater parameters (storage, porosity, longitudinal dispersivity, and denitrification rate coefficients) were calibrated for 7 aquifers. Furthermore, the models were run for different scenarios representing possible future conditions. The results demonstrated that the models performed well in terms of the fate and transport of nitrate in the Upper White River Watershed.en_US
dc.identifier.citationEryiğit, M., & Engel, B. (2022). Spatiotemporal Modelling of Groundwater Flow and Nitrate Contamination in An Agriculture-Dominated Watershed. Journal of Environmental Informatics, 39(2).en_US
dc.identifier.doi10.3808/jei.202100470
dc.identifier.endpage135en_US
dc.identifier.issn1726-2135
dc.identifier.issn1684-8799
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85128467744en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage125en_US
dc.identifier.urihttp://dx.doi.org/10.3808/jei.202100470
dc.identifier.urihttps://hdl.handle.net/20.500.12491/11002
dc.identifier.volume39en_US
dc.identifier.wosWOS:000766817800001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorEryiğit, Mirac
dc.language.isoenen_US
dc.publisherINT SOC ENVIRON INFORM SCIen_US
dc.relation.ispartofJournal of Environmental Informaticsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.relation.tubitak1059B 191800383
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNitrate Contaminationen_US
dc.subjectGroundwater Contaminant Transporten_US
dc.subjectGroundwater Flowen_US
dc.subjectLand-Useen_US
dc.subjectTransporten_US
dc.subjectVulnerabilityen_US
dc.titleSpatiotemporal modelling of groundwater flow and nitrate contamination in an agriculture-dominated watersheden_US
dc.typeArticleen_US

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