Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Deep percolation"”.
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Irrigation scheduling: a soft adaptor to weather uncertainties and irrigation efficiency improvement initiatives
… field measurements and analysing irrigation and deep percolation under a range of PAW-based irrigation triggers by applications of mathematical modelling of irrigation scheduling. A farmers’ survey has been carried out with 32 dairy farmers in Canterbury, New Zealand to collect information on …
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Probabilistic estimation and prediction of groundwater recharge in a semi-arid environment
… time series indicate that at the SHP data sites, deep percolation (potential recharge) is indeed highly episodic and shows significant interannual variability. Conditions that allow major percolation events are high intensity rains, moist antecedent soil conditions, and below-maximum root density. …
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A Model for Simulating Soil-Zone Processes at the Regional Scale
… The soil zone connects the land surface to the deeper unsaturated and saturated zones. Modeling of soil-zone processes has been used to gain understanding of watershed hydrologic processes. Currently MODFLOW does not simulate dynamic near-surface hydrologic processes such as, infiltration, …
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Hydrology of a large unstable hillslope at Ebnit, Vorarlberg : identifying dominating processes and structures
… Austria. This so called Heumös slope features a deep-seated translational shear zone and surface near creep movements of up to 10 cm a year. The Cretaceous marlstones of the Austrian Helveticum have a high susceptibility for weathering and might form clay-rich cohesive sediments. In addition, …
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Surface and groundwater quality impacts of conservation tillage practices on burley tobacco production systems in Southwest Virginia
… nutrient and pesticide edge-of-field and deep percolation losses from conventional tillage (CT), strip tillage (ST), and no-till (NT) treatments in a burley tobacco production system. The field experiment results show that the CT treatment yielded more total runoff, 93.6 mm, than ST and …
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Laboratory Test Program of Rotary Plate Sprinklers
… by evaporation losses, wind drift, runoff and deep percolation. Application uniformity measures the evenness of the water application over the irrigated area. Sprinkler characteristics that influence application efficiency and uniformity include:<br> • Wetted diameter - reduced pressure …
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Surface hydrologic modeling and GIS: a case study of the Kaimai Hydropower project catchment, New Zealand
… region has a high infiltration rate coupled with deep percolation through joints and cracks. The subsurface geology, rather than land surface characteristics, were the dominant factor here, so surface classification methods such as CN could not support predicting quickflow volumes. A map-based …
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Seepage Rates in Closed Basins
Seepage is an important component of the water budget in closed basins that do not have surface water drainage features. In the shallow water table environment of Florida, internal drainage of soil controls flooding. With the recent rapid population growth and urban development in the state, a …