Study of Storm Surge Numerical Simulation in the Bohai Sea

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.

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Numerical Simulation of the Storm Surge at the Sakhalin Island Southern Part on November 15, 2019

Physical Oceanography ◽

10.22449/1573-160x-2020-4-364-373 ◽

2020 ◽

Vol 27 (4) ◽

Author(s):

A. I. Zaytsev ◽

E. N. Pelinovsky ◽

D. Dogan ◽

B. Yalciner ◽

A. Yalciner ◽

...

Keyword(s):

Numerical Simulation ◽

Spatial Distribution ◽

Wind Speed ◽

Water Level ◽

Storm Surge ◽

Sakhalin Island ◽

In Situ Measurements ◽

Atmospheric Effect ◽

Port Area

Purpose. Investigation of the storm surge in Korsakov in the southern part of the Sakhalin Island on November 15, 2019 and comparison of the results of its numerical simulation with the data of in situ measurements constitute the aim of the article. Methods and Results. In situ measurements of the storm surge in Korsakov (the Sakhalin region) were performed and the data on the flooded area dimensions were collected. A storm period on the Sakhalin Island is almost the annual event in an autumn-winter season. The severe storm that happened in the southern Sakhalin region on November 15, 2019 led to flooding of the port territory in Korsakov. Due to the NAMI-DANCE computational complex, the storm surge was numerically simulated within the framework of the system of shallow water equations in the spherical coordinates on the rotating Earth with the regard for the friction force and the atmospheric effect. The calculations included the data on temporal and spatial distribution of the wind speed at the altitude 10 m taken from the Climate Forecast System Reanalysis database. The data on the atmospheric pressure were not applied in simulations since the atmosphere pressure gradient at the area under study was small. The simulation was carried out in the course of three days. The simulations showed that in 20 hours after the wind forcing had started, the water level in the port increased up to its maximum values, and did not fall the whole day. The water level maximum heights were concentrated in the southwestern part of the Aniva Bay. At that the calculated current speeds reached 2 m/s. During the storm, at the wind speed up to 15 m/s, the storm surge height in the Korsakov port area constituted 1.7 m, whereas the width of the flooded zone was up to 200 m. These results are confirmed well by the in situ measurement data. Conclusions. The simulation values of the power characteristics for the above-mentioned storm are represented in the paper. The Froude number square reaches 0.03 in the Korsakov city port area, and spatial distribution of the wave strength moment is up to 1 m3/s2. Field measurements and eyewitness reports confirm the evidence of a powerful impact of a storm surge upon the port constructions.

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Prediction Analysis of Extreme Water Level of Storm Surge along the Coast of Bohai Sea

Advances in Marine Sciences ◽

10.12677/ams.2020.72006 ◽

2020 ◽

Vol 07 (02) ◽

pp. 37-43

Author(s):

欣刘

Keyword(s):

Water Level ◽

Storm Surge ◽

Bohai Sea ◽

Extreme Water Level ◽

Prediction Analysis

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

Water ◽

10.3390/w12051509 ◽

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.

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Nitric oxide (NO) in the Bohai Sea and the Yellow Sea

Biogeosciences ◽

10.5194/bg-16-4485-2019 ◽

2019 ◽

Vol 16 (22) ◽

pp. 4485-4496 ◽

Cited By ~ 1

Author(s):

Ye Tian ◽

Chao Xue ◽

Chun-Ying Liu ◽

Gui-Peng Yang ◽

Pei-Feng Li ◽

...

Keyword(s):

Nitric Oxide ◽

Surface Layer ◽

Yellow Sea ◽

Bohai Sea ◽

Limit Of Detection ◽

Bottom Layer ◽

The Yellow Sea ◽

The Bohai Sea ◽

Significant Difference ◽

Average Flux

Abstract. Nitric oxide (NO) is a short-lived compound of the marine nitrogen cycle; however, our knowledge about its oceanic distribution and turnover is rudimentary. Here we present the measurements of dissolved NO in the surface and bottom layers at 75 stations in the Bohai Sea (BS) and the Yellow Sea (YS) in June 2011. Moreover, NO photoproduction rates were determined at 27 stations in both seas. The NO concentrations in the surface and bottom layers were highly variable and ranged from below the limit of detection (i.e., 32 pmol L−1) to 616 pmol L−1 in the surface layer and 482 pmol L−1 in the bottom layer. There was no significant difference (p>0.05) between the mean NO concentrations in the surface (186±108 pmol L−1) and bottom (174±123 pmol L−1) layers. A decreasing trend of NO in bottom-layer concentrations with salinity indicates a NO input by submarine groundwater discharge. NO in the surface layer was supersaturated at all stations during both day and night and therefore the BS and YS were a persistent source of NO to the atmosphere at the time of our measurements. The average flux was about 4.5×10-16 mol cm−2 s−1 and the flux showed significant positive relationship with the wind speed. The accumulation of NO during daytime was a result of photochemical production, and photoproduction rates were correlated to illuminance. The persistent nighttime NO supersaturation pointed to an unidentified NO dark production. NO sea-to-air flux densities were much lower than the NO photoproduction rates. Therefore, we conclude that the bulk of the NO produced in the mixed layer was rapidly consumed before its release to the atmosphere.

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Numerical simulation of tidal mixing in the Bohai Sea [China]

Deep Sea Research Part B Oceanographic Literature Review ◽

10.1016/0198-0254(84)93171-6 ◽

1984 ◽

Vol 31 (12) ◽

pp. 842

Keyword(s):

Numerical Simulation ◽

Bohai Sea ◽

Tidal Mixing ◽

The Bohai Sea

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

Discrete Dynamics in Nature and Society ◽

10.1155/2014/282085 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 4

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.

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