Soil Characterization and Modeling of Spatial Distribution of Saturated Hydraulic Conductivity at Two Sites in the Volta Basin of Ghana

Soil Characterization and Modeling of Spatial Distribution of Saturated Hydraulic Conductivity at Two Sites in the Volta Basin of Ghana PDF

Author: Wilson Agyei Agyare

Publisher: Cuvillier Verlag

Published: 2004

Total Pages: 211

ISBN-13: 3865371000

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One of the key parameters in hydrological and climate change modeling is a good estimation of the soil hydrauic properties in the region of interest. This study investigates the spatial distribution and variability of soil physical properties, with emphasis on saturated hydraulic conductivity at two pilot sites in the Volta Basin of Ghana. It focuses on the potential of pedotransfer functions (PTFs) and artificial neural network (ANN) approach for estimating saturated hydraulic conductivity. Saturated hydraulic conductivity was observed to be highly spatially variable; however, it can be estimated using selected PTFs and ANN for soils in the Volta Basin based on soil parameters that can readily be obtained from detailed soil maps--From cover.

Advances in Agronomy

Advances in Agronomy PDF

Author:

Publisher: Academic Press

Published: 2014-06-27

Total Pages: 277

ISBN-13: 0128003227

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Advances in Agronomy continues to be recognized as a leading reference and a first-rate source for the latest research in agronomy. As always, the subjects covered are varied and exemplary of the myriad of subject matter dealt with by this long-running serial. Timely and state-of-the-art reviews Distinguished, well recognized authors A venerable and iconic review series Timely publication of submitted reviews

Surface Runoff and Infiltration Processes in the Volta Basin, West Africa

Surface Runoff and Infiltration Processes in the Volta Basin, West Africa PDF

Author: Ayodele Ebenezer Ajayi

Publisher: Cuvillier Verlag

Published: 2004

Total Pages: 157

ISBN-13: 3865370977

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"The study presents the analyses of field observations and simulation experiments with an event-based, two-dimensional hydrodynamic model. The model summarized the interactions between temporally dynamic rainfall, infiltration process and surface runoff in a catchment with varied soil physio-hydraulic properties, surface-roughtness, slope-lengths and vegetation structure. Both observation and simulation results indicate that the observation scale affects runoff coefficient and runoff discharge per unit area. The effect of scale is a result of spatial variability in infiltration opportunities, which vary with the slop length and distribution of saturated conductivity, leading to different trasmission losses potential during runoff routing downslope. The magnitude of the difference is influenced by surface and vegetated microtopography, which determine the flow rate"--Back cover.

A Geoinformatics Approach for Spatial Water Accounting and Irrigation Demand Forecasting for a Gravity Irrigation System

A Geoinformatics Approach for Spatial Water Accounting and Irrigation Demand Forecasting for a Gravity Irrigation System PDF

Author: Muhammad Kaleem Ullah

Publisher:

Published: 2011

Total Pages: 636

ISBN-13:

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"This study developed a nodal network model for spatial water accounting and productivity analysis, including estimation of actual evapotranspiration (ET) and land use/land cover classification. It also developed and validated a remote sensing based methodology for irrigation demand forecasting that can be integrated for each node of the network and also at the system level. The selected study site of the Coleambally Irrigation Area, NSW, Australia is a demand driven irrigation system, for which water accounting and irrigation demand forecasting was carried out on 22 nodes for the 2008-09 and 2009-10 summer seasons. All water accounting parameters including inflow and outflow were measured across 22 nodes as well as at the system level."--Abstract.

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