Method of Measuring Seawater Flow Rate with Plaster Balls

Abstract

Procedures for measuring the flow rate of seawater using plaster balls in a laver culture farm were investigated. At the beginning of the study, the method of making plaster balls and the method for measuring their wear in flow were examined and improved. The amount of wear (weight and volume) of the plaster ball in water flow increased in proportion to the water volume that they received within 24-48 hours, however, it was also affected by the hardness (density) of plaster balls and seawater temperature. From the results of experiments, it is considered that plaster ball is suitable material for measuring the flow rate of seawater.