Abstract
A Thermal Video System is used to measure instantaneous temperature distribution due to the heated water horizontally discharged onto the still water surface. The images are translated into digital data, with which several characteristics of the surface plumes are discussed. Mean temperature distribution deviates from the Gaussian distribution. Coefficients to express the distribution are given in terms of the densimetric Froude number. Contours of the temperature variance and their three-dimensional expression show the generation area of the major eddies, interference and breaking of the eddies, and general paths of broken eddies.
