A scaling procedure for straightforward computation of sorptivity

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dc.contributor.authorLassabatere, Laurenten
dc.contributor.authorPeyneau, Pierre-Emmanuelen
dc.contributor.authorYilmaz, Denizen
dc.contributor.authorPollacco, Josephen
dc.contributor.authorFernández-Gálvez, Jesúsen
dc.contributor.authorLatorre, Borjaen
dc.contributor.authorMoret-Fernández, Daviden
dc.contributor.authorDi Prima, Simoneen
dc.contributor.authorRahmati, Mehdien
dc.contributor.authorStewart, Ryan D.en
dc.contributor.authorAbou Najm, Majdi R.en
dc.contributor.authorHammecker, Claudeen
dc.contributor.authorAngulo-Jaramillo, Rafaelen
dc.date.accessioned2021-12-05T23:06:21Zen
dc.date.available2021-12-05T23:06:21Zen
dc.date.issued2021-09-22en
dc.date.updated2021-12-05T23:06:19Zen
dc.description.abstractSorptivity is a parameter of primary importance in the study of unsaturated flow in soils. This hydraulic parameter is required to model water infiltration into vertical soil profiles. Sorptivity can be directly estimated from the soil hydraulic functions (water retention and hydraulic conductivity curves), using the integral formulation of . However, calculating sorptivity in this manner requires the prior determination of the soil hydraulic diffusivity and its numerical integration between initial and final saturation degrees, which may be difficult in some situations (e.g., coarse soil with diffusivity functions that are quasi-infinite close to saturation). In this paper, we present a procedure to compute sorptivity using a scaling parameter, cp, that corresponds to the sorptivity of a unit soil (i.e., unit values for all parameters and zero residual water content) that is utterly dry at the initial state and saturated at the final state. The cp parameter was computed numerically and analytically for five hydraulic models: Delta (i.e., Green and Ampt), Brooks and Corey, van Genuchten-Mualem, van Genuchten-Burdine, and Kosugi. Based on the results, we proposed brand new analytical expressions for some of the models and validated previous formulations for the other models. We also tabulated the output values so that they can easily be used to determine the actual sorptivity value for any case. At the same time, our numerical results showed that the relation between cp and the hydraulic shape parameters strongly depends on the chosen model. These results highlight the need for careful selection of the proper model for the description of the water retention and hydraulic conductivity functions when estimating sorptivity.en
dc.description.versionPublished versionen
dc.format.extentPages 5083-5104en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.5194/hess-25-5083-2021en
dc.identifier.eissn1607-7938en
dc.identifier.issn1027-5606en
dc.identifier.issue9en
dc.identifier.orcidStewart, Ryan [0000-0002-9700-0351]en
dc.identifier.urihttp://hdl.handle.net/10919/106843en
dc.identifier.volume25en
dc.language.isoenen
dc.publisherCopernicusen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/4.0/en
dc.subject0406 Physical Geography and Environmental Geoscienceen
dc.subject0905 Civil Engineeringen
dc.subject0907 Environmental Engineeringen
dc.subjectEnvironmental Engineeringen
dc.titleA scaling procedure for straightforward computation of sorptivityen
dc.title.serialHydrology and Earth System Sciencesen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherJournal Articleen
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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