dc.contributor.authorRahardjo, Harianto
dc.contributor.authorRezaur, R. B.
dc.contributor.authorLeong, Eng Choon
dc.identifier.citationRahardjo, H., Rezaur. R. B. & Leong, E. C. (2002). Spatial and Temporal Variability of Pore-Water Pressures in Residual Soil Slopes in a Tropical Climate. Earth Surface Processes and Landforms, 27(3), 317-338.en_US
dc.description.abstractIt is critical to understand and quantify the temporal and spatial variability in hillslope hydrological data in order to advance hillslope hydrological studies, evaluate distributed parameter hydrological models, analyse variability in hydrological response of slopes and design efficient field data sampling networks. The spatial and temporal variability of field-measured pore-water pressures in three residual soil slopes in Singapore was investigated using geostatistical methods. Parameters of the semivariograms, namely the range, sill and nugget effect, revealed interesting insights into the spatial structure of the temporal situation of pore-water pressures in the slopes. While informative, mean estimates have been shown to be inadequate for modelling purposes, indicator semivariograms together with mean prediction by kriging provide a better form of model input. Results also indicate that significant temporal and spatial variability in porewater pressures exists in the slope profile and thereby induces variability in hydrological response of the slope. Spatial and temporal variability in pore-water pressure decreases with increasing soil depth. The variability decreases during wet conditions as the slope approaches near saturation and the variability increases with high matric suction development following rainfall periods. Variability in pore-water pressures is greatest at shallow depths and near the slope crest and is strongly influenced by the combined action of microclimate, vegetation and soil properties.en_US
dc.format.extent22 p.
dc.relation.ispartofseriesEarth surface processes and landformsen_US
dc.rights@ copyright 2002 John Wiley & Sons, Ltd.en_US
dc.subjectDRNTU::Engineering::Civil engineering::Geotechnical
dc.titleSpatial and temporal variability of pore-water pressures in residual soil slopes in a tropical climateen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.description.versionAccepted versionen_US

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