土木学会論文集B2(海岸工学)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
天竜川河口沖合海域の流れの時空間変動特性
岡辺 拓巳柳川 竜一青木 伸一加藤 茂
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キーワード: 流れ, 河口
ジャーナル フリー

67 巻 (2011) 2 号 p. I_336-I_340

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Around a river mouth at open coastal zone, complicated flow fields arise from interactions between waves, tidal and fluvial currents. To estimate sediment budget around river mouth, it may be important to investigate the current field. In this study, spatio-temporal properties of the currents off the Tenryu River mouth on the Pacific Ocean are discussed based on field data and numerical simulation. The field data were obtained in five-year observation in summer from 2006 to 2010. The westward component is significant in the vertical profile of time-average current. The bottom layer currents are developed in long-term under the influence of a flood discharge. Also from the numerical simulation with 3D hydrodynamic model, seasonal variations of the current field in wide coastal area have been roughly reproduced.

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© 2011 公益社団法人 土木学会
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