Author(s): S. Makita; K. Enoki; K. Izumiyama; F. Hara; H. Saeki
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Abstract: Lake Saroma, which has two waterways connecting to the Okhotsk Sea, is a relatively deep and a tranquil lake with salinity similar to that of the Okhotsk Sea. The lake is therefore an ideal place for aquaculture of scallops, oysters and other marine products. However, from January to February the ice floes that move down along the coast of the Okhotsk Sea drift into the lake through its two waterways, causing serious damage to the aquacultural facilities. In order to prevent such damage, a dike for control of ice floes consisting of 13 ice booms was constructed at the No. 1 waterway. Tensile forces acting on the main wire of the ice boom at Lake Saroma were measured by the Hokkaido Development Bureau in 1996 and 1997. The data showed that the tensile force did not always depend on the flow speed and surface area of ice field.
Year: 2000