ABSTRACT
Dissolved oxygen (DO) recovery process in embayment connected to a main-channel was revealed on the basis of the laboratory experiment. Horizontal velocity vectors were measured to evaluate large-scale circulation within the embayment, and measured time-series of DO concentration in the recovering process promoted by supply from the main-channel. Particularly, the present study focused on effects of aperture ratio of embayment/main-channel opening. A practical formula of DO recovery rate was proposed by using bulk-mean velocity in main-channel, aperture ratio and opening position.
