Author(s): Shunsuke Makita; Hiroshi Saeki; Atsumi Furuya
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Abstract: Saloma Lagoon, on the Okhotsk coast, has two inlets to the open sea: a natural inlet (the first inlet) and an inlet constructed in 1978 (the second inlet). This lagoon is used intensively for aquaculture of shellfish, such as scallop and oyster, because it is relatively deep and has the same salinity as the open sea. Semi-closed water areas like Saloma Lagoon are very calm, making them ideal for aquaculture. However, there is also the risk that the water quality may suddenly decrease. In order to use the lagoon for sustainable aquaculture, it will be necessary to consider water exchange toward maintaining the water quality. In Saloma Lagoon, hanging aquaculture facilities are used for scallop culture. These are installed underwater to avoid influences of freezing and ice floe during winter. To maintain the water quality of Saloma Lagoon, it will be necessary to have a clear understanding of the flow conditions during the freezing period. In this study, the flow conditions of the lagoon are simulated to clarify influences of freezing and drift ice in winter.
Year: 2002