Home > Publications database > Scale-dependency of the hydraulic properties of a variably saturated heterogeneous sandy subsoil > print

001     52097
005     20180211181124.0
024 7 _ |2 DOI
|a 10.1016/j.jhydrol.2005.11.040
024 7 _ |2 WOS
|a WOS:000239870900008
037 _ _ |a PreJuSER-52097
041 _ _ |a eng
082 _ _ |a 690
084 _ _ |2 WoS
|a Engineering, Civil
084 _ _ |2 WoS
|a Geosciences, Multidisciplinary
084 _ _ |2 WoS
|a Water Resources
100 1 _ |a Javaux, M.
|b 0
|u FZJ
|0 P:(DE-Juel1)129477
245 _ _ |a Scale-dependency of the hydraulic properties of a variably saturated heterogeneous sandy subsoil
260 _ _ |a Amsterdam [u.a.]
|b Elsevier
|c 2006
300 _ _ |a 376 - 388
336 7 _ |a Journal Article
|0 PUB:(DE-HGF)16
|2 PUB:(DE-HGF)
336 7 _ |a Output Types/Journal article
|2 DataCite
336 7 _ |a Journal Article
|0 0
|2 EndNote
336 7 _ |a ARTICLE
|2 BibTeX
336 7 _ |a JOURNAL_ARTICLE
|2 ORCID
336 7 _ |a article
|2 DRIVER
440 _ 0 |a Journal of Hydrology
|x 0022-1694
|0 3413
|v 327
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a The effective hydraulic behaviour of heterogeneous sand was experimentally investigated at two scales under transient flow upper boundary conditions. At the monoliths-scale, one-dimensional inverse modelling was performed from a transient infiltration experiment by implementing in the objective function the outflow and pressure head time series at four depths. Notwithstanding the important heterogeneity of the subsoil, principally due to the presence of discontinuous clay and a stone layer, we observed that the effective behaviour was surprisingly well reproduced. It was also observed that the structural features mainly induced a kind of hysteresis between the saturation and drainage cycles of the outflow time series. Subsequently, 104 Kopecky cores (100 cm(3)) were sub-sampled throughout the monolith, mainly in the sandy matrix. The variability of local hydraulic parameters was investigated by optimising the local hydraulic parameters from mufti-step outflow experiments and measured retention points. The comparison between 1-D optimised, measured and Kopecky-averaged retention curves showed relatively similar shape near saturation. In contrast to this, important discrepancies existed between averaged local scale hydraulic conductivity and effective hydraulic conductivity close to saturation. Different experimental designs at different scales may explain the observed discrepancies. It is further suggested that the monolith-scale effective hydraulic functions are more representative for wet soil conditions. This case study illustrates the complexity of finding validated scaling relationships for the hydraulic properties of heterogeneous soils at scales larger than the usual small column scale. (c) 2005 Elsevier B.V. All rights reserved.
536 _ _ |a Terrestrische Umwelt
|c P24
|2 G:(DE-HGF)
|0 G:(DE-Juel1)FUEK407
|x 0
588 _ _ |a Dataset connected to Web of Science
650 _ 7 |a J
|2 WoSType
653 2 0 |2 Author
|a vadose zone
653 2 0 |2 Author
|a water flow
653 2 0 |2 Author
|a 3-D modelling
653 2 0 |2 Author
|a spatial variability
653 2 0 |2 Author
|a upscaling issue
653 2 0 |2 Author
|a effective parameters
700 1 _ |a Vanclooster, M.
|b 1
|0 P:(DE-HGF)0
773 _ _ |a 10.1016/j.jhydrol.2005.11.040
|g Vol. 327, p. 376 - 388
|p 376 - 388
|q 327<376 - 388
|0 PERI:(DE-600)1473173-3
|t Journal of hydrology
|v 327
|y 2006
|x 0022-1694
856 7 _ |u http://dx.doi.org/10.1016/j.jhydrol.2005.11.040
909 C O |o oai:juser.fz-juelich.de:52097
|p VDB
913 1 _ |k P24
|v Terrestrische Umwelt
|l Terrestrische Umwelt
|b Erde und Umwelt
|0 G:(DE-Juel1)FUEK407
|x 0
914 1 _ |y 2006
915 _ _ |0 StatID:(DE-HGF)0010
|a JCR/ISI refereed
920 1 _ |k ICG-IV
|l Agrosphäre
|d 31.12.2006
|g ICG
|0 I:(DE-Juel1)VDB50
|x 0
970 _ _ |a VDB:(DE-Juel1)81833
980 _ _ |a VDB
980 _ _ |a ConvertedRecord
980 _ _ |a journal
980 _ _ |a I:(DE-Juel1)IBG-3-20101118
980 _ _ |a UNRESTRICTED
981 _ _ |a I:(DE-Juel1)IBG-3-20101118

LibraryCollectionCLSMajorCLSMinorLanguageAuthor
Marc 21