SEAWATER EXCHANGE METHOD FOR CONFINED WATER AREA

摘要

PROBLEM TO BE SOLVED: To perpetually feed seawater containing sufficient dissolved oxygen near the surface of the sea to the confined water area using natural energy for eliminating a layer of discontinuity related to temperature and density in the confined water area and to prevent the deterioration of water quality in the sea bottom area as well. SOLUTION: A conduit tube 6 is laid at a height corresponding to the water line position WL of an embankment 2a for dividing the open sea 4 and the confined water area 3 where the blocks of waves 5 dash the embankment 2a. Seawater 7 flowing from the conduit tube 6 is thereby introduced to a water reservoir 8 installed on the internal surface of the embankment 2a and made to flow into the confined water area 3 from the vicinity of the bottom 8a of the water reservoir 8 by use of a difference in water head. In addition, seawater in the confined water area 3 is discharged through a discharge pipe 10 laid on another embankment 2b for dividing the confined water area 3 and the open sea 4.