Diurnal Change of dissolved O2, CO2 and pH in the Water of Ohori (Castle-moat) in Relation to the Solar Radiation. (Part III.) Their Seasonal Fluctuations

[摘要] The seasonal variations on the amount of O2, CO2, and pH in the water of Ohori were examined for a year during April 1932 and the end of March 1933, concerning the diurnal changes of them produced by the photosynthetic reaction of aquatic plants. It is the remarkable characteristic of the water of Ohori that the dissolved O2 is supersaturated in the almost all seasons, especially in the late spring time and the summer the saturation percentage of O2 rises to 18% and the value of pH is alkali in the whole year. The feature of the seasonal fluctuation of the aquatic plants may be showed by the formula, viz. d/S/S0, where d is the amplitude of the diurnal change of O2, S the total amount of solar radiation in a day and S0 the calculated amount of the undisturbed radiation.

[学科分类] 大气科学