Assessment of vadose zone solute transport under a potato field by a 19 month time-lapse cross-hole resistivity imaging survey

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dc.contributor.advisorPetersen, Brent
dc.contributor.advisorButler, Karl
dc.contributor.advisorDanielescu, Serban
dc.contributor.authorWang, Shuang
dc.date.accessioned2023-03-01T16:27:58Z
dc.date.available2023-03-01T16:27:58Z
dc.date.issued2017
dc.date.updated2022-12-01T00:00:00Z
dc.description.abstractNitrate is a necessary nutrient for crops, however high concentrations of nitrate in surface water and groundwater can negatively affect aquatic ecosystems and human health. 3D cross-hole Electrical Resistivity Imaging (ERI) has been used to investigate the percolation of a conductive tracer (KCl) through a 17 m thick vadose zone as a proxy for the transport of nitrate under natural recharge conditions. Post-tracer surveys indicate that tracer movement has slowed significantly by early May, 2015 (about one month after tracer application), at the end of snow melt. The shallow conductivity anomaly produced by the tracer diminished significantly over the winter and spring of 2016, but showed little evidence of bulk matrix flow below approximately 6 m depth (top of the bedrock). It is speculated that fractures in the bedrock, too thin to be resolved by the ERI survey, conveyed tracer downward. After 18.5 months, there is no ERI evidence of tracer migrating through the matrix below approximately 6 m.
dc.description.copyright© Shuang Wang, 2017
dc.description.noteM.Sc.E. University of New Brunswick, Department of Electrical and Computer Engineering, 2017.
dc.formattext/xml
dc.format.extentxii, 108 pages
dc.format.mediumelectronic
dc.identifier.oclcOCLC# 1352452287
dc.identifier.otherThesis 9937
dc.identifier.urihttps://unbscholar.lib.unb.ca/handle/1882/13905
dc.language.isoen_CA
dc.publisherUniversity of New Brunswick
dc.rightshttp://purl.org/coar/access_right/c_abf2
dc.subject.disciplineElectrical and Computer Engineering
dc.subject.lcshZone of aeration -- Testing.
dc.subject.lcshNitrates -- Environmental aspects -- Testing.
dc.subject.lcshWater -- Testing.
dc.subject.lcshElectric conductors -- Testing.
dc.titleAssessment of vadose zone solute transport under a potato field by a 19 month time-lapse cross-hole resistivity imaging survey
dc.typemaster thesis
thesis.degree.disciplineElectrical and Computer Engineering
thesis.degree.fullnameMaster of Science in Engineering
thesis.degree.grantorUniversity of New Brunswick
thesis.degree.levelmasters
thesis.degree.nameM.Sc.E.

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