Coupling time-lapse ground penetrating radar surveys and infiltration experiments to characterize two types of non-uniform flow

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dc.contributor.authorDi Prima, Simoneen
dc.contributor.authorGiannini, Vittoriaen
dc.contributor.authorRibeiro Roder, Ludmilaen
dc.contributor.authorGiadrossich, Filippoen
dc.contributor.authorLassabatere, Laurenten
dc.contributor.authorStewart, Ryan D.en
dc.contributor.authorAbou Najm, Majdi R.en
dc.contributor.authorLongo, Vittorioen
dc.contributor.authorCampus, Sergioen
dc.contributor.authorWiniarski, Thierryen
dc.contributor.authorAngulo-Jaramillo, Rafaelen
dc.contributor.authorDel Campo, Antonioen
dc.contributor.authorCapello, Giorgioen
dc.contributor.authorBiddoccu, Marcellaen
dc.contributor.authorRoggero, Pier Paoloen
dc.contributor.authorPirastru, Marioen
dc.date.accessioned2021-10-12T14:31:01Zen
dc.date.available2021-10-12T14:31:01Zen
dc.date.issued2021-09-17en
dc.date.updated2021-10-12T14:30:45Zen
dc.description.abstractUnderstanding linkages between heterogeneous soil structures and non-uniform flow is fundamental for interpreting infiltration processes and improving hydrological simulations. Here, we utilized ground-penetrating radar (GPR) as a non-invasive technique to investigate those linkages and to complement current traditional methods that are labor-intensive, invasive, and non-repeatable. We combined time-lapse GPR surveys with different types of infiltration experiments to create three-dimensional (3D) diagrams of the wetting dynamics. We carried out the GPR surveys and validated them with in situ observations, independent measurements and field excavations at two experimental sites. Those sites were selected to represent different mechanisms that generate non-uniform flow: (1) preferential water infiltration initiated by tree trunk and root systems; and (2) lateral subsurface flow due to soil layering. Results revealed links between different types of soil heterogeneity and non-uniform flow. The first experimental site provided evidence of root-induced preferential flow paths along coarse roots, emphasizing the important role of coarse roots in facilitating preferential water movement through the subsurface. The second experimental site showed that water infiltrated through the restrictive layer mainly following the plant root system. The presented approach offers a non-invasive, repeatable and accurate way to detect non-uniform flow.en
dc.description.versionAccepted versionen
dc.format.extentPages 150410en
dc.format.mimetypeapplication/pdfen
dc.identifier150410 (Article number)en
dc.identifier.doihttps://doi.org/10.1016/j.scitotenv.2021.150410en
dc.identifier.eissn1879-1026en
dc.identifier.issn0048-9697en
dc.identifier.issuePt 1en
dc.identifier.orcidStewart, Ryan [0000-0002-9700-0351]en
dc.identifier.otherS0048-9697(21)05487-5 (PII)en
dc.identifier.pmid34571219en
dc.identifier.urihttp://hdl.handle.net/10919/105261en
dc.identifier.volume806en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urihttps://www.ncbi.nlm.nih.gov/pubmed/34571219en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectGPRen
dc.subjectPreferential flowen
dc.subjectSoil layersen
dc.subjectStemflowen
dc.subjectWater infiltrationen
dc.subjectEnvironmental Sciencesen
dc.titleCoupling time-lapse ground penetrating radar surveys and infiltration experiments to characterize two types of non-uniform flowen
dc.title.serialThe Science of the Total Environmenten
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherJournal Articleen
dcterms.dateAccepted2021-09-13en
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciencesen
pubs.organisational-group/Virginia Tech/University Research Institutesen
pubs.organisational-group/Virginia Tech/University Research Institutes/Fralin Life Sciencesen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciences/CALS T&R Facultyen
pubs.organisational-group/Virginia Tech/University Research Institutes/Fralin Life Sciences/Durelle Scotten
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciences/School of Plant and Environmental Sciencesen

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