湖沼における沈水植物が有する波浪減衰特性 : 琵琶湖での実観測をもとにした波浪減衰効果の検討
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概要
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The purpose of this study is to show the damping effect of the wave force by submerged plants in lakes and how the damping effect of it have been affected by differences with or without submerged plants and their rate. On survey line, which length was 400m from lakeside to offing, in Biwa Lake, we recorded continuously the wave height by the submerged plants at 5 points using pressure instrumentations. As a result, the damping effect was due to the plant cover ratio and the depth. On the maximum damping decreased by a factor of 0.71 compared with the case without the plants when the plant cover ratio was 100%. Moreover, we suggested how to calculate the damping factor by between the plant cover ratio and a density factor(kρ) of the plants.
- 土木学会の論文
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