Your search found 7 records
1 Angelakis, A. N.; Rolston, D. E.; Kadir, T. N.; Scott, V. H. 1993. Soil-water distribution under trickle source. Journal of Irrigation and Drainage Engineering, 119(3):484-500.
(Location: IWMI-HQ Call no: PER Record No: H012849)
Soil-water distributions in homogeneous soil profiles of Yolo clay loam and Yolo sand irrigated from a circular source of water were measured at several times after initiation of irrigation. The effect of trickle discharge rates and soil type on the locations of the wetting front and soil-water content distributions were determined. Soil-water potential and hydraulic conductivity as a function of soil-water content, were also measured. A finite element solution of the two-dimensional transient soil-water equation, the theory of time-dependent, linearized infiltration from a circular source, the effective hemisphere model, and generalized solution for axially symmetric flow were compared with the experimental results. In general, the computed vertical advances of the wetting front were closely related to those observed for both soils. All of the solutions provided a better prediction of the wetting front positions for the clay-loam soil than for the sandy soil. The calculated and measured horizontal wetting fronts did not agree for large time, especially for the generalized solution. A more pronounced underprediction of the wetting front positions by the effective hemisphere theory occurred compared to those predicted by the linearized and finite element theories. Soil-water content distributions computed by linearized and numerical solutions, agreed reasonably with measured values in both soils.
2 Angelakis, A. N.; Kadir, T. N.; Rolston, D. E. 1993. Time-dependent soil-water distribution under a circular trickle source. Water Resources Management, 7(3):225-235.
(Location: IWMI-HQ Call no: PER Record No: H013082)
Soil-water distribution in homogeneous soil profiles of Yolo clay loam and Yolo sand (Typic xerorthents) irrigated from a circular source of water, was measured several times after the initiation of irrigation. The effect of trickle discharge rates and soil type on the locations of the wetting front and soil-water distribution was considered. Soil-water tension and hydraulic conductivity, as functions of soil-water content, were also measured. The theories of time-dependent, linearized infiltration from a circular source and a finite-element solution of the two-dimensional transient soil-water equation were compared with the experimental results. In general, for both soils the computer horizontal and vertical advances of the wetting fronts were closely related to those observed. With both theories, a better prediction of the wetting front position for the clay loam soil than for the sandy soil is shown. The calculated and measured horizontal vertical advances did not agree over long periods of time. With the linearized solution, overestimated and underestimated vertical advances for the clay and sandy soils, respectively, were shown. The finite-element model approximate in a better way the vertical advances than the linearized solution, while an opposite tendency for the horizontal advances indicated, especially in sandy soil.
3 Tsagarakis, K. P.; Tsoumanis, P.; Chartzoulakis, K.; Angelakis, A. N.. 2001. Water resources status including wastewater treatment and reuse in Greece: Related problems and prospectives. Water International, 26(2):252-258.
Water resources ; Effluents ; Water quality ; Water availability ; Water stress ; Wastewater ; Water reuse ; Irrigation water ; Water demand / Greece
(Location: IWMI-HQ Call no: PER Record No: H029164)
4 Tsagarakis, K. P.; Dialynas, G. E.; Angelakis, A. N.. 2004. Water resources management in Crete (Greece) including water recycling and reuse and proposed quality criteria. Agricultural Water Management, 66(1):35-47.
Water resource management ; Water reuse ; Recycling ; Effluents ; Water quality ; Wastewater ; Soil salinity / Greece / Crete
(Location: IWMI-HQ Call no: PER Record No: H034377)
5 Paranychianakis, N. V.; Aggelides, S.; Angelakis, A. N.. 2004. Influence of rootstock, irrigation level and recycled water on growth and yield of Soultania grapevines. Agricultural Water Management, 69(1):13-27.
(Location: IWMI-HQ Call no: PER Record No: H035685)
6 Paranychianakis, N. V.; Nikolantonakis, M.; Spanakis, Y.; Angelakis, A. N.. 2006. The effect of recycled water on the nutrient status of Soultanina grapevines grafted on different rootstocks Agricultural Water Management, 81(1-2):185-198.
(Location: IWMI-HQ Call no: PER Record No: H038445)
7 Kapellakis, I. E.; Tsagarakis, K. P.; Avramaki, C.; Angelakis, A. N.. 2006. Olive mill wastewater management in river basins: A case study in Greece. Agricultural Water Management, 82(3):354-370.
(Location: IWMI-HQ Call no: PER Record No: H038694)
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