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https://hdl.handle.net/20.500.14094/90007890
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2024-04-26
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90007890 (fulltext)
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メタデータID
90007890
アクセス権
open access
出版タイプ
Version of Record
タイトル
Integration of Submerged Aquatic Vegetation Motion Within Hydrodynamic Models
著者
Nakayama, K. ; Shintani, T. ; Komai, K. ; Nakagawa, Y. ; Tsai, J. W. ; Sasaki, D. ; Tada, K. ; Moki, H. ; Kuwae, T. ; Watanabe, K. ; Hipsey, M. R.
著者ID
A0044
研究者ID
1000060271649
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=c5a2042377aa64d0520e17560c007669
著者名
Nakayama, K.
中山, 恵介
ナカヤマ, ケイスケ
所属機関名
工学研究科
著者名
Shintani, T.
著者名
Komai, K.
著者名
Nakagawa, Y.
著者名
Tsai, J. W.
著者名
Sasaki, D.
著者名
Tada, K.
著者名
Moki, H.
著者名
Kuwae, T.
著者名
Watanabe, K.
著者名
Hipsey, M. R.
収録物名
Water Resources Research
巻(号)
56(8)
ページ
e2020WR027369-e2020WR027369
出版者
American Geophysical Union (AGU)
刊行日
2020-08
公開日
2021-03-04
抄録
Aquatic models used for both freshwater and marine systems frequently need to account for submerged aquatic vegetation (SAV) due to its influence on flow and water quality. Despite its importance, parameterizations are generally adopted that simplify feedbacks from SAV, such as canopy properties (e.g., considering the deflected vegetation height) and the bulk friction coefficient. This study reports the development of a fine-scale non-hydrostatic model that demonstrates the two-way effects of SAV motion interaction with the flow. An object-oriented approach is applied to capture the multiphase phenomena, whereby a leaf-scale SAV model based on a discrete element method is combined with a flow dynamics model to resolve stresses from currents and waves. The model is verified through application to a laboratory-scale seagrass bed. A force balance analysis revealed that leaf elasticity and buoyancy are the most significant components influencing the horizontal and vertical momentum equations, respectively. The sensitivity of canopy-scale bulk friction coefficients to water depth, current speeds, and vegetation density of seagrass was explored. Deeper water was also shown to lead to a smaller decrease in vegetation height. The model approach can contribute to improving assessment of processes influencing water quality, sediment stabilization, carbon sequestration, and SAV restoration, thereby supporting an understanding of how waterways and coasts will respond to changes brought about by development and a changing climate.
キーワード
seagrass
friction coefficient
object-oriented programing
laboratory experiment
hydrodynamic model
eelgrass
カテゴリ
工学研究科
学術雑誌論文
権利
© 2020. American Geophysical Union. All Rights Reserved.
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資源タイプ
journal article
言語
English (英語)
ISSN
0043-1397
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eISSN
1944-7973
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NCID
AA0088653X
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関連情報
DOI
https://doi.org/10.1029/2020WR027369
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