The impact of sea road of Lvdao Island the tidal current field

2011 ◽  
Author(s):  
Bingchen Liang ◽  
Fei Fan ◽  
Xinying Pan
Keyword(s):  
Tidal Current ◽  
Current Field ◽  
The Impact

Study on the forecast method for the impact of crossway on tidal current field in sea area

1996 ◽  
Vol 14 (4) ◽  
pp. 343-348
Author(s):  
Sun Ying-lan ◽  
Zheng Lian-yuan ◽  
Tian Hui ◽  
Wang Xue-chang ◽  
Sun Chang-qing
Keyword(s):  
Tidal Current ◽  
Forecast Method ◽  
Current Field ◽  
Sea Area ◽  
The Impact

scholarly journals Marine and anthropogenic controls on the estuary of the Suriname River over the past 50 years

2016 ◽  
Vol 95 (4) ◽  
pp. 419-428
Author(s):  
K. Gersie ◽  
P.G.E.F. Augustinus ◽  
R.T. Van Balen
Keyword(s):  
Tidal Current ◽  
River Flow ◽  
Sediment Load ◽  
Anthropogenic Activities ◽  
Fluvial Systems ◽  
Sediment Fluxes ◽  
Fine Grained ◽  
The Past ◽  
The Impact ◽  
Strong Tidal Current

AbstractHumans have played an important role in fluvial systems because of the impact of their land-use activities, frequently leading to degradation of environmental conditions. Rivers, which are the primary agents in sediment transport, have thus been subject to changes in sediment fluxes. The Suriname River has been affected by anthropogenic activities since colonial times, and has experienced strong discharge and sediment-load changes since the construction of the Afobaka Dam in 1964. The river's estuary sediments largely consist of fine-grained sediments, originating, ultimately, from the Amazon River and transported by the strong tidal current. The influence of this tidal current is diminished at the head of the estuary, allowing the river flow to become dominant. Also remarkable is the interaction of the Suriname River and the westward-migrating mudbanks which is evident in the changing magnitude and volume of Braamspunt, a mudcape located at the mouth of the estuary. The regulated discharge of the river results in a change of the river's morphology, resulting, among other things, in the growth of river bars.

Numerical Modeling of the Tidal Current Movement of the Baima Port, China

2014 ◽  
Vol 675-677 ◽  
pp. 806-810 ◽  
Author(s):  
Xin Li ◽  
Ming Xiao Xie
Keyword(s):  
Numerical Modeling ◽  
Water Depth ◽  
Hydrodynamic Model ◽  
Tidal Current ◽  
Software Package ◽  
Current Field ◽  
Sediment Transportation ◽  
Current Coupling ◽  
Current Movement ◽  
D Wave

The Sanduao Bay is the bay with many of islands where the coastline is very winding with complex hydrodynamics and sediment transportation. Using a 2-D wave-current coupling hydrodynamic model of the Mike21 software package, the hydrodynamics condition on the Pingang Operation Area of Baima Port in the Sanduao Bay is simulatated. The results show that the current field in the berth is smooth that is beneficial to maintenance of water depth and reduction of siltation in berth. And the velocity in reclamation and dredging area is reduced less than 0.05m/s. the reclamation near the coastline and dredging in the berth make the velocity varied and the varying range is between 0.3m/s and 0.4m/s.

Simulated High-Pile Dock Construction on the Impact of Coastal Erosion Based on Theoretical Models and Dou Theory - A Case of Suanshan Dock

2012 ◽  
Vol 160 ◽  
pp. 386-390
Author(s):  
De Yu Luo ◽  
Lei Huang ◽  
Xu Gao
Keyword(s):  
Stable State ◽  
Theoretical Models ◽  
Ocean Current ◽  
Current Field ◽  
Erosion And Deposition ◽  
Theoretical Simulation ◽  
Speed Flow ◽  
Before And After ◽  
Bridge Type ◽  
The Impact

In order to investigate the renovation and expansion of coastal high-pile on the possible environmental impact of erosion and deposition, the changes of ocean current field and bottom erosion before and after the current field of renovation and expansion were simulated in use of an average two-dimensional vertical flow theoretical simulation model and Dou theory, based on ocean current Speed, flow and other measured data, integrated hydrological, meteorological and other historical information. The results showed that after the construction of Suanshan Dock , the increased siltation of Yang gong-shan Dock and Budui Dock code were approximately 1m and 0.5m respectively. Due to the high pile and bridge-type structure of high-pile dock , although the construction of Suanshan Dock would cause coastal area occurring a certain flow pattern changes , there were not significantly changes to the topography of basin . The underwater slope area would remain in a relatively stable state.

scholarly journals A Study on the Response of the Hydrodynamic Environment to the Morphology of Radial Sand Ridges in the Coastal Waters of Jiangsu

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2190
Author(s):  
Changjun Qi ◽  
Lejun Ma ◽  
Qinggai Wang ◽  
Yuan Zhai ◽  
Jixuan Li ◽  
...  
Keyword(s):  
Tidal Current ◽  
Unstructured Grid ◽  
Tidal Currents ◽  
Current Data ◽  
Material Transport ◽  
Current Field ◽  
Sand Ridges ◽  
Radial Sand Ridges ◽  
Local Current ◽  
Hydrodynamic Environment

A two-dimensional hydrodynamic model for the waters off the coast of Jiangsu, where there are radial sand ridges (RSRs) (hereinafter, the RSR area), was established based on measured topographic, tide level and tidal current data. Considering the complex topographic and geomorphic characteristics of the RSR group in this area, an unstructured grid was used for the calculation. A four-layer refinement was applied to the grid from outside to inside to better fit the complex topography. The simulations were performed to examine the response of the hydrodynamic environment to the morphology of the RSRs in three scenarios, namely, when there are natural RSRs, no RSRs, and partially reclaimed RSRs. When there are no or partially reclaimed RSRs, the tidal current field still exists in a radial pattern in the RSR area. The radial tidal current field is relatively stable and is not controlled by the morphologies of the RSRs. The topographic changes do not alter the distribution pattern of the radial tidal current field but do affect the local current fields. When there are no RSRs, the flood currents can directly reach Jianggang. Under practical conditions, the RSRs block the tidal currents during a flood tide to some extent. This phenomenon is particularly pronounced when the RSRs are partially reclaimed. For example, during an ebb tide, when the tidal currents encounter sand ridges or reclamation areas, their streamlines bend, and they flow around the obstacles. This change will affect the material transport, sediment deposition and seabed erosion.

Environmental Impact Study on the Residual Chlorine Diffusion during the Intake-Outlet Project of LNG Wharf

2014 ◽  
Vol 955-959 ◽  
pp. 1648-1652
Author(s):  
Shan Shan Yao ◽  
Hong Bo Zhao
Keyword(s):  
Environmental Impact ◽  
Chlorine Concentration ◽  
Residual Chlorine ◽  
Impact Study ◽  
The East China Sea ◽  
Current Field ◽  
Advection Diffusion Equation ◽  
Advection Diffusion ◽  
Environmental Impact Study ◽  
The Impact

Taking the intake-outlet project of Zhoushan LNG wharf as background, using a 2-D numerical model to simulate the tidal current field around the project, then predict the residual chlorine concentration distribution based on advection-diffusion equation, after calculate the residual chlorine diffusion scope, environmental impact caused by the intake-oulet project was analyzed, especially the impact on the reserve areas nearby. Research results show that: the influence aboved is very little, residual chlorine diffusion mainly concentrated around the outlet, the diffusion area with residual chlorine concentration more than 0.02mg/l and more than 0.1mg/l are respectively less than 0.2 km2 and 0.05km2, although it does have a little influence to the border area of the East China Sea Hairtail Reserve during Case B, but the residual chlorine concentration is less than 0.03mg/l, and the influence distance is only within 50m.

Sign in / Sign up

Export Citation Format

Share Document