Publicação: Bridging hydraulic diffusivity from aquifer to particle-size scale: a study on loess sediments from southwest Hungary
dc.contributor.author | Pacheco, F. A. L. | |
dc.contributor.author | Landim, P. M. B. [UNESP] | |
dc.contributor.author | Szocs, Teodora | |
dc.contributor.institution | Trás-os-Montes and Alto Douro University | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Geological and Geophysical Institute of Hungary | |
dc.date.accessioned | 2015-10-21T20:17:31Z | |
dc.date.available | 2015-10-21T20:17:31Z | |
dc.date.issued | 2015-02-01 | |
dc.description.abstract | In situ megascale hydraulic diffusivities (D) of a confined loess aquifer were estimated at various scales (10 <= L <= 1500 m) by a finite difference model, and laboratory microscale diffusivities of a loess sample by empirical formulas. A scatter plot reveals that D fits to a single power function of L, providing that microscale diffusivities are assigned to L = 1 m and that differences in diffusivity observed between micro- and megascales are assigned to medium heterogeneity appraised by variations in the curvature and slope of natural hydraulic head waves propagating through the aquifer. Subsequently, a general power relationship between D and L is defined where the base and exponent terms stand for the aquifer storage capability under a confined regime of flow, for the microscale hydraulic conductivity and specific yield of loess, and for the changes in curvature and slope of hydraulic head waves relative to values defined at unit scale.[GRAPHICS]Editor Z.W. Kundzewicz | en |
dc.description.affiliation | Department of Geology and Chemistry Research Center, Trás-os-Montes and Alto Douro University, 5001-801 Vila Real, Portugal. | |
dc.description.affiliation | Hydrogeological Department, Geological and Geophysical Institute of Hungary, H-1143 Budapest, Hungary. | |
dc.description.affiliationUnesp | Applied Geology Department, São Paulo State University, 13506-900 Rio Claro, Brazil | |
dc.format.extent | 269-284 | |
dc.identifier | http://www.tandfonline.com/doi/abs/10.1080/02626667.2014.889831 | |
dc.identifier.citation | Hydrological Sciences Journal-journal Des Sciences Hydrologiques. Abingdon: Taylor & Francis Ltd, v. 60, n. 2, p. 269-284, 2015. | |
dc.identifier.doi | 10.1080/02626667.2014.889831 | |
dc.identifier.issn | 0262-6667 | |
dc.identifier.lattes | 7206664999934534 | |
dc.identifier.uri | http://hdl.handle.net/11449/129059 | |
dc.identifier.wos | WOS:000347703000007 | |
dc.language.iso | eng | |
dc.publisher | Taylor &Francis Ltd | |
dc.relation.ispartof | Hydrological Sciences Journal-journal Des Sciences Hydrologiques | |
dc.relation.ispartofjcr | 2.061 | |
dc.relation.ispartofsjr | 0,939 | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | Hydraulic diffusivity | en |
dc.subject | Ioess | en |
dc.subject | Hydraulic head wave | en |
dc.subject | Grain-size distribution | en |
dc.subject | Confined aquifer | en |
dc.subject | Scale | en |
dc.title | Bridging hydraulic diffusivity from aquifer to particle-size scale: a study on loess sediments from southwest Hungary | en |
dc.type | Artigo | |
dcterms.license | http://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp | |
dcterms.rightsHolder | Taylor &francis Ltd | |
dspace.entity.type | Publication | |
unesp.author.lattes | 7206664999934534 | |
unesp.campus | Universidade Estadual Paulista (UNESP), Instituto de Geociências e Ciências Exatas, Rio Claro | pt |
unesp.department | Geologia Aplicada - IGCE | pt |