An ultra-shallow water storm surge model with quadratically depth-varying eddy viscosity and its application to the numerical modelling of the Bohai Sea storm surges

1985 ◽  
Vol 3 (2) ◽  
pp. 167-184
Author(s):  
Wu Dexing ◽  
Qin Zenghao
Keyword(s):  
Numerical Modelling ◽  
Shallow Water ◽  
Storm Surge ◽  
Eddy Viscosity ◽  
Bohai Sea ◽  
Storm Surges ◽  
The Bohai Sea ◽  
Sea Storm

scholarly journals Storm Surges in the Bohai Sea: The Role of Waves and Tides

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1509
Author(s):  
Yuanyi Li ◽  
Huan Feng ◽  
Guillaume Vigouroux ◽  
Dekui Yuan ◽  
Guangyu Zhang ◽  
...  
Keyword(s):  
Storm Surge ◽  
Bohai Sea ◽  
Storm Surges ◽  
Wave Force ◽  
Laizhou Bay ◽  
Bohai Bay ◽  
Coastal Regions ◽  
The Bohai Sea ◽  
Tidal Phase ◽  
Set Up

A storm surge is a complex phenomenon in which waves, tide and current interact. Even though wind is the predominant force driving the surge, waves and tidal phase are also important factors that influence the mass and momentum transport during the surge. Devastating storm surges often occur in the Bohai Sea, a semi-enclosed shallow sea in North China, due to extreme storms. However, the effects of waves on storm surges in the Bohai Sea have not been quantified and the mechanisms responsible for the higher surges that affect part of the Bohai Sea have not been thoroughly studied. In this study, we set up a storm surge model, considering coupled effects of tides and waves on the surges. Validation against measured data shows that the coupled model is capable of simulating storm surges in the Bohai Sea. The simulation results indicate that the longshore currents, which are induced by the large gradient of radiation stress due to wave deformation, are one of the main contributors to the higher surges occurring in some coastal regions. The gently varying bathymetry is another factor contributing to these surges. With such bathymetry, the wave force direction is nearly uniform, and pushes a large amount of water in that direction. Under these conditions, the water accumulates in some parts of the coast, leading to higher surges in nearby coastal regions such as the south coast of the Bohai Bay and the west and south coasts of the Laizhou Bay. Results analysis also shows that the tidal phase at which the surge occurs influences the wave–current interactions, and these interactions are more evident in shallow waters. Neglecting these interactions can lead to inaccurate predictions of the storm surges due to overestimation or underestimation of wave-induced set-up.

scholarly journals A Numerical Simulation of Extratropical Storm Surge and Hydrodynamic Response in the Bohai Sea

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Yumei Ding ◽  
Lei Ding
Keyword(s):  
Storm Surge ◽  
Bohai Sea ◽  
Model Simulation ◽  
Three Dimensional ◽  
Wrf Model ◽  
Ocean Model ◽  
Tidal Currents ◽  
The Bohai Sea ◽  
Hydrodynamic Response ◽  
Coastal Ocean Model

A hindcast of typical extratropical storm surge occurring in the Bohai Sea in October 2003 is performed using a three-dimensional (3D) Finite Volume Coastal Ocean Model (FVCOM). The storm surge model is forced by 10 m winds obtained from the Weather Research Forecasting (WRF) model simulation. It is shown that the simulated storm surge and tides agree well with the observations. The nonlinear interaction between the surge and astronomical tides, the spatial distribution of the maximum surge level, and the hydrodynamic response to the storm surge are studied. The storm surge is the interaction of the surge and the astronomical tides. The currents change rapidly during the storm surge and turn to be the unidirectional at some places where the tidal currents are usually rectilinear. The results show that the local surge current velocity in each depth, with a magnitude of the same order as the astronomic tidal currents, increases or decreases rapidly depending on the relationship between the winds and current directions. Furthermore, the current pattern gets more complicated under the influence of the direction of the winds, which might affect sand movement in the coastal water of the Bohai Sea.

scholarly journals Storm surge variation along the coast of the Bohai Sea

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Jianlong Feng ◽  
Delei Li ◽  
Yan Li ◽  
Qiulin Liu ◽  
Aimei Wang
Keyword(s):  
Storm Surge ◽  
Bohai Sea ◽  
The Bohai Sea

Long-term variation of storm surge-associated waves in the Bohai Sea

2019 ◽  
Vol 37 (6) ◽  
pp. 1868-1878 ◽  
Author(s):  
Yanping Wang ◽  
Yongling Liu ◽  
Xinyan Mao ◽  
Yutao Chi ◽  
Wensheng Jiang
Keyword(s):  
Storm Surge ◽  
Bohai Sea ◽  
The Bohai Sea ◽  
Term Variation

Study of Storm Surge Numerical Simulation in the Bohai Sea

2014 ◽  
Vol 989-994 ◽  
pp. 2288-2291 ◽  
Author(s):  
Yong Qiang Zhang ◽  
Qian Lan Leng ◽  
Ze Jian Hu ◽  
Zi Chen Zhu ◽  
Wan Jun Zhang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Spatial Distribution ◽  
Water Level ◽  
Storm Surge ◽  
Bohai Sea ◽  
Current Field ◽  
Extreme Water Level ◽  
The Bohai Sea ◽  
Astronomical Tide ◽  
Significant Difference

In this paper, a numerical model of the coupling between astronomical tide and storm surge based on hydraulic model for estuary and coast (ECOM) is confirmed to be suitable for simulation of stormsurge in the Bohai Sea. The spatial distribution of extreme water level and storm current field caused by typhoons in October 2003 are simulated.It shows that extreme water level in deep water are smaller than shallow water and the spatial distribution of extreme water level is influenced by topography.Flow filed in Bohai Sea waters takes on an fluctuation in flow field, compensatory flow and other obvious features during storm surge, compared storm surge with astronomical tide, which is a significant difference in flow filed.

Numerical modelling of temporal and spatial patterns of petroleum hydrocarbons concentration in the Bohai Sea

2018 ◽  
Vol 127 ◽  
pp. 251-263 ◽  
Author(s):  
Weijun Guo ◽  
Guoxiang Wu ◽  
Tiaojian Xu ◽  
Xueyan Li ◽  
Xiaozhong Ren ◽  
...  
Keyword(s):  
Numerical Modelling ◽  
Spatial Patterns ◽  
Petroleum Hydrocarbons ◽  
Bohai Sea ◽  
The Bohai Sea ◽  
Temporal And Spatial Patterns ◽  
Temporal And Spatial

SPM transport in the Bohai Sea: field experiments and numerical modelling

2004 ◽  
Vol 44 (3-4) ◽  
pp. 175-188 ◽  
Author(s):  
Wensheng Jiang ◽  
Thomas Pohlmann ◽  
Jun Sun ◽  
Andreas Starke
Keyword(s):  
Numerical Modelling ◽  
Bohai Sea ◽  
Field Experiments ◽  
The Bohai Sea

scholarly journals Research of the Influential Factors on the Simulation of Storm Surge in the Bohai Sea

2014 ◽  
Vol 8 (1) ◽  
pp. 151-156 ◽  
Author(s):  
Yumei Ding ◽  
Hao Wei
Keyword(s):  
Drag Coefficient ◽  
Storm Surge ◽  
Bohai Sea ◽  
Three Dimensional ◽  
Ocean Model ◽  
Influential Factors ◽  
Influential Factor ◽  
Data Set ◽  
The Bohai Sea ◽  
Sensitivity Studies

A hindcast of typical extratropical storm surge occurring in the Bohai Sea in Oct. 2003 is performed using a three-dimensional storm surge model system based on Finite-Volume Coastal Ocean Model (FVCOM). The surface winds are obtained from the WRF data set. Some preliminary sensitivity studies of the influential factors affecting the storm surge simulation in the Bohai Sea are conducted with the high revolution numerical model of storm surge. The factors of tide-surge interaction, the wind stress, the water depth, the bottom drag coefficient and the critical depth in the model are studied. After considering the tide-wind interaction and the severe wind, the most important influential factor affecting the storm surge in the Bohai Sea is the bottom drag coefficient. These sensitivity studies indicate that the storm surge simulations depend critically on the parameterizations. Hence additional experimental guidance is required on the bottom drag coefficient. This study is useful for the storm surge simulation in order to select the proper parameter to make possible a good conservation behavior of the storm surge model.

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