Wave-current interactions during extreme weather conditions in southwest of Bohai Bay, China
Wave-current interactions during extreme weather conditions in southwest of Bohai Bay, China
复制标题
中国渤海湾西南部极端天气条件下的波流相互作用
DOI：
10.1016/j.oceaneng.2020.108068
复制
发表时间：
2020-11
影响因子：
5
通讯作者：
Zhen Ma
中科院分区：
文献类型：
--
作者：
Honglin Song;Cuiping Kuang;Xiao Hua Wang;Zhen Ma
波流相互作用广泛发生在浅水中。然而，不同沿海地区调制的主导因素不同，相关的生成机制尚未得到充分解决。在这项研究中，Delft3D波-流耦合模型应用于中国渤海湾西南部，这是一个缓坡的浅水海岸，以估计极端天气期间当地的波-流相互作用。结果表明，波浪结构受局部底坡、水深和辐射应力梯度的强烈影响。由于底部粗糙度的增加，平均水流速度因波浪而降低了高达 15%，并且动量从波浪到水流传递的影响是不可忽略的。潮变深度和潮流都能够调制有效波高（SWH），并且它们的调制能力在陆上分别增强和减弱。此外，敏感性研究表明，深度引起的 SWH 调制主要是由于与底部坡度相关的浅滩效应。风速对深度和电流引起的SWH调制起着重要作用，因为它会影响风波和风输入能量的状态。而风向从陆上到海上的变化只会导致电流感应调制的显着变化。
Wave-current interactions widely occur in shallow waters. However, the dominant factors for the modulation differ over different coastal regions and the relevant generation mechanisms have not been fully addressed. In this study, a Delft3D wave-current coupled model is applied to the southwestern Bohai Bay, China, which is a shallow-water coast with a mild slope, to estimate the local wave-current interactions during extreme weathers. The results indicate that the wave set-up is strongly influenced by local bottom slope, water depth and radiation stress gradient. The mean current velocity is decreased by wave by up to 15% due to enhanced bottom roughness, and the impact of momentum transfer from wave to current is non-negligible. Both tidally-varying depth and current are able to modulate significant wave height (SWH), and their modulating abilities are increased and decreased onshore respectively. Furthermore, the sensitivity studies suggest that the depth-induced SWH modulation is primarily due to the shoaling effect which is related to bottom slope. The wind speed plays an important role on the depth- and current-induced SWH modulation, as it could affect the state of wind-wave and wind input energy. Whereas, wind direction change from onshore to offshore only results in remarkable changes of current-induced modulation.
登录
查看更多内容
影响因子：
3.5
作者：
Pengcheng Wang;J. Sheng
通讯作者：
Pengcheng Wang;J. Sheng
DOI：
10.1061/(asce)ww.1943-5460.0000299
发表时间：
2015-05
期刊：
Journal of Waterway Port Coastal and Ocean Engineering-asce
影响因子：
--
作者：
C. Kuang;Xiaodan Mao;Li Pengchen;L. Deng;J. Gu;Zhen Ma;Dong Du;Jilong Yang;Futian Liu;Honglin Song
通讯作者：
C. Kuang;Xiaodan Mao;Li Pengchen;L. Deng;J. Gu;Zhen Ma;Dong Du;Jilong Yang;Futian Liu;Honglin Song
影响因子：
3.7
作者：
M. Longuet-Higgins;R. W. Stewart
通讯作者：
M. Longuet-Higgins;R. W. Stewart
影响因子：
3.5
作者：
F. Ardhuin;Nobuhiro Suzuki;J. McWilliams;H. Aiki
通讯作者：
F. Ardhuin;Nobuhiro Suzuki;J. McWilliams;H. Aiki
DOI：
10.1142/1241-part1
发表时间：
1997
期刊：
DEStech Transactions on Computer Science and Engineering
影响因子：
--
作者：
M. Dingemans
通讯作者：
M. Dingemans