| 摘要 |
<p>A water intake unit (1), which is located in the deep layer area of the sea, and a water discharge unit (3), which is located in the surface layer area of the sea, are fixed to the sea bottom. The water intake unit (1) is in the shape of a duct pipe into the opening of which the seawater flows. The water discharge unit (3) has an opening toward the flow-out direction of the seawater. Owing to this structure, the deep seawater is lifted up via a pumping pipe (2) connecting the water intake unit (1) to the water discharge unit (3) and nutrient salts are supplied in a large amount to the surface area of the sea. Owing to photosynthesis, carbon dioxide is fixed as planktons. Thus, useful marine organisms can be grown by using these planktons.</p> |
