千葉県南部沿岸のアワビ稚貝場の地形並びに流況

概要

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The authors studied these factors of sea bottom type and its current which seemed to make nursery ground. In the bottom types, it was discovered that the frequency of rock undulations in the abalone habitat were 0.60 to 0.81 per meter, and the relation between surf course and rock lines was almost 90 degrees. The depth of abalone habitats was less than 7 meters mainly. And the bottom consists of rock or mixed with sandy zone. As regards the current factor, the current speed of 0.07 to 0.48 meter per second in Kawaguchi and Otohama nursery ground of abalone, was verified. Especially, we got slow current on the nursery ground which were 0.02 to 0.21 meter per second except one station. We anticipated the existence of some eddy zones by the figure of residual current, and eddy zones were made behind the nursery habitat.
日本水産學會の論文