摘要
针对渤海海域开展了波致底切应力对泥沙作用的数值估计。针对浅水条件,通过理想试验估算了波致底切应力对波流耦合底切应力的贡献。针对渤海大风过程,利用ECOMSED模式,通过波流耦合底边界层模型模拟了渤海区域的泥沙浓度,并利用遥感资料对表层泥沙浓度的数值模拟进行了检验。对比结果表明,考虑波浪作用的情况下,模拟结果在总体分布上得到明显的改善。在大风过程中波浪对0～20m近岸区域的泥沙再悬浮起主导作用。
The wave effect on sediment transport is analyzed in the Bohai Sea area.First,a series of ideal experiments were carried out to investigate the characteristics of wave-current coupled bottom shear stress and the proportion of wave-induced bottom shear stress.Second,a numerical simulation of suspended sediment concentration was compared with the remote sensing data during a gale process in the Bohai Sea.The results indicate that the model output is improved much when the wave-induced bottom shear stress is considered.The wave plays a key role in the resuspension of sediment in the shallow water of 0-20 m depth during the gale weather.
出处
《海洋学报》
CAS
CSCD
北大核心
2012年第5期174-182,共9页
基金
科技部项目“渤海东海海浪精细化预报与信息服务系统开发”资助
关键词
悬浮泥沙
波流耦合底切应力
渤海
suspended sediments
wave-current coupled bottom shear stress
Bohai Sea
