Your search found 2 records
1 Bremond, B.; Caupenne, J. M.; Collas, Ph. 1988. Drainage hydrology in the marshlands of Western France. Agricultural Water Management, 14(1-4):175-183.
(Location: IWMI-HQ Call no: PER Record No: H05231)
2 Bremond, B.; Molle, B. 1995. Characterization of rainfall under center pivot: Influence of measuring procedure. Journal of Irrigation and Drainage Engineering, 121(5):347-353.
Irrigation equipment ; Sprinkler irrigation ; Rain ; Precipitation ; Measurement ; Simulation models
(Location: IWMI-HQ Call no: PER Record No: H017211)
A simulation model of rainfall under center pivots was used to elevate center-pivot testing procedures. The model calculates rainfall parameters such as weighted mean and uniformity coefficient for various scenarios including the case of a voluntarily disrupted machine. Observed variations in rainfall parameters suggested modifications to standard procedures in order to improve accuracy. Those modifications include staggering rain-gauge position on the two radii of measure and a uniformity coefficient derived from a coefficient of variation calculated on weighted values, theoretically more sensitive than existing approaches. Such a procedure has been proposed as an improvement over the draft international standard ISO/TC23/SC18/DIS11545, "Agricultural Irrigation Equipment - CentrePivot and Moving Lateral Irrigation Machines Equipped with Sprayer of Sprinkler Nozzles - Determination of Uniformity of Water Distribution."
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