Abstract
Recent high development of industries and increased population in Japan have recently raised serious problems in securing water resoutces and, at the same time, in water pollution.
As a part of procedure in studying water pollution, measurement of diffusion of dye stuff in water were emplyed. Actual mesurement were made by observers on board ships, which presented much inconveniences and troubles.
In the hope of eleminating these disadvantages, a series of experiments in utilizing aerial photogrammetric measurement have been done with remarkable success.
In this paper, the photogrammetric method and a part of results obtained by this observation techniques applied to Sagami-bay and Hiroshima-bay, Japan, are discussed.
It is concluded that the application of photogrammetry to dye diffusion measurements is practicable and may prove extremely valuable in oceanological field.
