Abstract
AbstractThe portable rainfall simulator, known as the rainulator, which has been recently developed at Lafayette, Indiana, was designed for use as a research tool to aid in more rapidly evaluating factors that influence erosion, runoff, and infiltration. Intensities of 2½ or 5 inches per hour with near the kinetic energy of natural rainfall at these intensities are produced. Other characteristics which are desirable for runoff and erosion research on rectangular field plots are embodied in the design. The number and length of plots to which simulated rainfall may be applied simultaneously may be varied by varying the number of units used.The rainulator will be used primarily for obtaining comparative evaluations of various topographic, soil, water, crop, and management factors under field plot conditions. Numerous factors are well suited to study by this method. The types of comparisons and evaluations which are and are not well adapted to study on rectangular field plots in general and specifically with the rainulator are also discussed.
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