Numerical simulation of sediment transport in Bohai Bay

Ya-ping Wang, D. Yuan, Hongtao Nie
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引用次数: 2

Abstract

Numerical simulations were carried out to discover the characteristics of sediment transport in the Bohai Bay. Two scenarios were set in the simulations to understand the impact of the high strength exploitation in recent years on sediment transport in the coastal zone of Bohai Bay. The simulated results show that (a) the sediment in western Bohai Bay mainly transports along the coastline in the near shore area; (b) The sediment transport is significantly correlated with the distribution of the residual currents; and (c) the changes in geomorphology and coastline caused by coastal zone development have impact on sediment transport in western Bohai Bay to a certain extent. However, the in situ investigation of radioactive isotope activities near Tianjin Port show a non-steady sedimentation feature, which is inconsistent with the results from the simulated results and could be a result of frequent human disturbance.
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渤海湾泥沙输移的数值模拟
通过数值模拟研究了渤海湾的输沙特征。为了解近年来高强度开采对渤海湾海岸带输沙的影响,在模拟中设置了两种情景。模拟结果表明:(a)渤海湾西部沉积物主要在近海岸沿海岸线输送;(b)输沙量与残流分布显著相关;(c)海岸带开发引起的地貌和海岸线变化对渤海湾西部输沙有一定的影响。然而,天津港附近放射性同位素活动的现场调查显示出非稳定沉降特征,这与模拟结果不一致,可能是人为干扰频繁的结果。
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