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dc.contributor.authorFriedel, Michael James
dc.contributor.authorde Souza Filho, Oderson Antônio
dc.contributor.authorIwashita, Fabio
dc.contributor.authorSilva, Adalene Moreira
dc.contributor.authorYoshinaga, Sueli
dc.date.accessioned2017-05-03T12:44:48Z
dc.date.available2017-05-03T12:44:48Z
dc.date.issued2012
dc.date.modified2014-07-22T04:32:28Z
dc.identifier.issn14312174
dc.identifier.doi10.1007/s10040-012-0855-1
dc.identifier.urihttp://hdl.handle.net/10072/61627
dc.description.abstractIt is not possible, using numerical methods, to model groundwater flow and transport in the fractured crystalline rock of northeastern Brazil. As an alternative, the usefulness of self-organizing map (SOM), k-means clustering, and Davies-Bouldin techniques to conceptualize the hydrogeology was evaluated. Also estimated was the well yield and groundwater quality across the Juᠲegion. This process relies on relations in the underlying multivariate density function associated with a sparse local set of hydrogeologic (electrical conductivity, geology, temperature, and well yield) and a complete regional set of airborne geophysical (electromagnetic, magnetic, and radiometric) and satellite spectrometric measurements. Resampling of the regional well yield and electrical conductivity estimates provides sufficient resolution to construct variograms for stochastic modeling of the hydrogeologic variables. The combination of these stochastic maps provides a way to identify potential drilling targets for future groundwater development. The data-driven estimation approach, when applied to available airborne electromagnetic and water-well hydrogeologic measurements, provides a low-cost alternative to numerical groundwater flow modeling. In addition to fractured rock environments, the alternative modeling framework can provide spatial parameter estimates and associated variograms for constraints to improve the traditional calibration of equivalent groundwater-porous-media models.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer
dc.publisher.placeGermany
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom1061
dc.relation.ispartofpageto1080
dc.relation.ispartofissue6
dc.relation.ispartofjournalHydrogeology Journal
dc.relation.ispartofvolume20
dc.rights.retentionY
dc.subject.fieldofresearchEarth Sciences not elsewhere classified
dc.subject.fieldofresearchEarth Sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode049999
dc.subject.fieldofresearchcode04
dc.subject.fieldofresearchcode09
dc.titleData-driven modeling for groundwater exploration in fractured crystalline terrain, northeast Brazil
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorIwashita, Fabio


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