Hydromechanics for the formation and development of radial sandbanks (Ⅰ)——Plane characteristics of tidal flow  

作　　者：严以新 诸裕良 薛鸿超 

出　　处：《Science China Earth Sciences》1999年第1期13-21,共9页中国科学（地球科学英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 49236120).

摘　　要：Based upon the long-term observation of field data, a two-dimensional numerical model is applied to simulating the tidal flow covering from the neap tide to spring tide in the radial sandbank area in the southern Yellow Sea. From the development of tidal current ridges under the hydrodynamic action, multi-purpose analysis and study are carried out, which include the propagation process of tidal wave, the distributions of tidal wave energy rate and tidal range, the tidal ellipses and traces. It is shown that the tidal current is the major dynamic factor for the formation and development of the radial sandbanks, and the differences of tidal wave energy rate and current strength determine the distinct plane shapes of ridges and troughs in this region.Based upon the long-term observation of field data, a two-dimensional numerical model is applied to simulating the tidal flow covering from the neap tide to spring tide in the radial sandbank area in the southern Yellow Sea. From the development of tidal current ridges under the hydrodynamic action, multi-purpose analysis and study are carried out, which include the propagation process of tidal wave, the distributions of tidal wave energy rate and tidal range, the tidal ellipses and traces. It is shown that the tidal current is the major dynamic factor for the formation and development of the radial sandbanks, and the differences of tidal wave energy rate and current strength determine the distinct plane shapes of ridges and troughs in this region.

关 键 词：RADIAL SANDBANKS TIDAL current RIDGE TWO-DIMENSIONAL numerical model to-and-fro motion. 

分 类 号：P731.2[天文地球—海洋科学]