摘要
建立了东中国海潮波数值模型，模拟了Ｍ２分潮波的传播，以研究Ｍ２分潮波的时空分布与黄海海底辐射沙洲形成和演变规律之间的关系．Ｍ２分潮波进入南黄海后，部分受山东半岛阻隔，在半岛以南水域及海州湾呈逆时针旋转．旋转波与后继的南黄海前进波在江苏北部沿海相遇，并在弓京港附近的水域形成潮波辐聚．在辐聚区内，潮差大，流速急，成为塑造海底沙脊间深槽的主要动力条件．７０００年前古海岸下Ｍ２分潮的数值试验表明，古河口附近的潮波为移动驻波型，其范围刚好与现在的南通市相对应．
To disclose the mechanism of the formation of the radiate shoal, a numerical tidal model has been developed to simulate the translation of M 2 tidal component wave. Parts of M 2 tidal wave entering the Yellow Sea are obstructed by the Shangdong peninsula and rotate anticlockwise. Anticlockwise rotating wave meets with the translational tidal wave coming from the East China Sea to the east of Jiangsu province which correspounds well with the location of radiate shoal. The numerical analysis of M 2 tidal wave together with ancient coastline indicates that there is a convergent and divergent area of tidal current in the outer part of the ancient Yangze river mouth. The location of the convergent and divergent area corresponds to the position of nowadays Nantong city. This result might be an evidence for the argument that the seabed shoal came from an ancient estuary.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1996年第5期35-40,共6页
Journal of Hohai University(Natural Sciences)
基金
国家自然科学基金重点项目
关键词
黄海海底
辐射沙洲
M2分潮
潮波
海洋地貌
Yellow Sea radiate shoal
M 2 tidal wave
numerical simulation
standing wave
translational tidal wave
rotational wave
