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

Based on the 2-D tidal current and sediment model, the field of tidal current near the sea of the secondary Diaoliang reclamation in Zhoushan was simulated due to the construction of the southern dike. After the simulation , the result was varified by the measured data .The impact on the surrounding sea and the annual change in erosion and deposition after the project was analyzed. The results show that the local current velocity in the eastern side of Luomen sea area features obviously decrease because of the reclamation project.The deposition is presented in the Diaoliang bay with the mean siltation intensity of around 0.8m/a, as well as about 1.1m/a of Luomen wharf apron .

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Research on Applied Technology and Tidal Current Control with Numerical Simulation of Pulandian Bay

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.886.281 ◽

2014 ◽

Vol 886 ◽

pp. 281-284 ◽

Cited By ~ 1

Author(s):

Hao Chen ◽

Fu Li Chen ◽

Yong Ying Zhu ◽

Li Ming Zhu

Keyword(s):

Numerical Simulation ◽

Tidal Current ◽

Flow Model ◽

Scientific Basis ◽

Current Control ◽

Liaoning Province ◽

Current Field ◽

Urban Core ◽

Applied Technology ◽

Sea Area

As the new urban core area and the center of Dalian, Pulandian Bay shoulder the mission of the coastal economic growth in Liaoning province. In view of the present urgent pollution situation in the coastal waters , the MIKE 21 Flow Model is used to build the two-dimensional tidal current field and replay the basic situation and the trend of variation of the bay. Model validation results show that the calculated values agree well with the measurement values, and the model can reflect the tidal current field of Pulandian Bay accurately. The numerical simulation results provide the scientific basis and basic data for the sea area construction and environmental protection.

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Numerical simulation of the impact of an integrated renovation project on the Maowei Sea hydrodynamic environment

Scientific Reports ◽

10.1038/s41598-021-96441-1 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Cui Wang ◽

Ling Cai ◽

Yaojian Wu ◽

Yurong Ouyang

Keyword(s):

Water Exchange ◽

Land Reclamation ◽

Three Dimensional ◽

Exchange Capacity ◽

Reclamation Project ◽

Hydrodynamic Environment ◽

Sea Area ◽

Water Quality Models ◽

The Impact ◽

Main Factor

AbstractIntegrated renovation projects are important for marine ecological environment protection. Three-dimensional hydrodynamics and water quality models are developed for the Maowei Sea to assess the hydrodynamic environment base on the MIKE3 software with high resolution meshes. The results showed that the flow velocity changed minimally after the project, decreasing by approximately 0.12 m/s in the east of the Maowei Sea area and increasing by approximately 0.01 m/s in the northeast of the Shajing Port. The decrease in tidal prism (~ 2.66 × 106 m3) was attributed to land reclamation, and accounted for just 0.86% of the pre-project level. The water exchange half-life increased by approximately 1 day, implying a slightly reduced water exchange capacity. Siltation occurred mainly in the reclamation and dredging areas, amounting to back-silting of approximately 2 cm/year. Reclamation project is the main factor causing the decrease of tidal volume and weakening the hydrodynamics in Maowei Sea. Adaptive management is necessary for such a comprehensive regulation project. According to the result, we suggest that reclamation works should strictly prohibit and dredging schemes should optimize in the subsequent regulation works.

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On the relationships between the radial tidal current field and the radial sand ridges in the southern Yellow Sea: a numerical simulation

Geo-Marine Letters ◽

10.1007/s003670100073 ◽

2001 ◽

Vol 21 (2) ◽

pp. 59-65 ◽

Cited By ~ 14

Author(s):

Yurong Zhu ◽

Ruifang Chang

Keyword(s):

Numerical Simulation ◽

Yellow Sea ◽

Tidal Current ◽

Southern Yellow Sea ◽

Current Field ◽

The Southern Yellow Sea ◽

Sand Ridges ◽

Radial Sand Ridges

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Blue Ocean Strategy In Managing Maritime Security

Jurnal Pertahanan ◽

10.33172/jp.v1i1.51 ◽

2015 ◽

Vol 1 (1) ◽

pp. 13 ◽

Cited By ~ 1

Author(s):

Sapto J. Poerwowidagdo

Keyword(s):

Maritime Security ◽

The Other ◽

Main Task ◽

Sea Power ◽

Stake Holder ◽

Maritime Domain Awareness ◽

Sea Area ◽

The Impact

The impact of the extension of the sea area of Indonesia, the biggest archipelagic state, is the bigger task of the Indonesian Navy and the other institutions and stake holder of the maritime security. The overlapping of the responsibility and authority in the maritime security tasks, pushes the Indonesian Navy in optimizing its main task. In the scope of the Maritime Domain Awareness, the Blue Ocean Strategy might be considered in managing an integrated maritime security by using Revolution in Navy Affairs in the Indonesian sea-power building.Keywords: Archipelagic state, Maritime domain awareness, Blue ocean strategy, Revolution in navy affairs.

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

Netherlands Journal of Geosciences – Geologie en Mijnbouw ◽

10.1017/njg.2016.18 ◽

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.

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NUMERICAL SIMULATION OF TIDAL CURRENT FIELD IN OFFSHORE AREA WITH MANY ISLANDS AND TIDAL CHANNELS

Asian and Pacific Coasts 2009 ◽

10.1142/9789814287951_0021 ◽

2009 ◽

Author(s):

Shu-hua ZUO ◽

Bei LI ◽

Zheng ZHANG

Keyword(s):

Numerical Simulation ◽

Tidal Current ◽

Tidal Channels ◽

Current Field ◽

Offshore Area

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Geodetic SAR for Height System Unification and Sea Level Research—Observation Concept and Preliminary Results in the Baltic Sea

Remote Sensing ◽

10.3390/rs12223747 ◽

2020 ◽

Vol 12 (22) ◽

pp. 3747

Author(s):

Thomas Gruber ◽

Jonas Ågren ◽

Detlef Angermann ◽

Artu Ellmann ◽

Andreas Engfeldt ◽

...

Keyword(s):

Baltic Sea ◽

Sea Level ◽

Tide Gauge ◽

The Baltic Sea ◽

Early Results ◽

Height System ◽

First Results ◽

The Baltic ◽

Sea Area ◽

The Impact

Traditionally, sea level is observed at tide gauge stations, which usually also serve as height reference stations for national leveling networks and therefore define a height system of a country. One of the main deficiencies to use tide gauge data for geodetic sea level research and height systems unification is that only a few stations are connected to the geometric network of a country by operating permanent GNSS receivers next to the tide gauge. As a new observation technique, absolute positioning by SAR using active transponders on ground can fill this gap by systematically observing time series of geometric heights at tide gauge stations. By additionally knowing the tide gauge geoid heights in a global height reference frame, one can finally obtain absolute sea level heights at each tide gauge. With this information the impact of climate change on the sea level can be quantified in an absolute manner and height systems can be connected across the oceans. First results from applying this technique at selected tide gauges at the Baltic coasts are promising but also exhibit some problems related to the new technique. The paper presents the concept of using the new observation type in an integrated sea level observing system and provides some early results for SAR positioning in the Baltic sea area.

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.675-677.806 ◽

2014 ◽

Vol 675-677 ◽

pp. 806-810 ◽

Cited By ~ 1

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.

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