Abstract
A new breakwater promoting vertical circulation flow and transporting oxygen-rich water to the sea bottom has been developed for improvement of the sea bottom environment. Effectiveness of the developed breakwater promoting vertical circulation flow has already been verified by the experiment with constant water depth. In this paper, effectiveness of the developed breakwater is investigated by large-scale experiments with different water depths. Consequently constructive improvement of the breakwater is examined through additional experiments. Furthermore, total volume of water mass transported into the sea bottom during one tide is estimated and presented as a quantitative index representing effectiveness of a promoting vertical circulation function of the proposed breakwater.
