Hydromechanics for the formation and development of radial sandbanks (Ⅱ)——Vertical characteristics of tidal flow  

作　　者：严以新 宋志尧 薛鸿超 茅丽华 

出　　处：《Science China Earth Sciences》1999年第1期22-29,共8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：In order to study the tidal current ridges, a three-dimensional numerical model is, for the first time, applied to studying the hydrodynamic circumstance with Houbolt’ s spiral assumption in the radial sandbank area. It successfully reveals that the radial sandbanks are molded by to-and-fro tidal current as well as the subtransverse circulation current, and that both contribute to maintaining the interior dynamic balance of the sandbanks. It is also found that the subtransverse circulation current would not always appear in pair within the ridges. These discoveries enrich the theoretical results in hydrodynamics of tidal current ridges.In order to study the tidal current ridges, a three-dimensional numerical model is, for the first time, applied to studying the hydrodynamic circumstance with Houbolt's spiral assumption in the radial sandbank area. It successfully reveals that the radial sandbanks are molded by to-and-fro tidal current as well as the subtransverse circulation current, and that both contribute to maintaining the interior dynamic balance of the sandbanks. It is also found that the subtransverse circulation current would not always appear in pair within the ridges. These discoveries enrich the theoretical results in hydrodynamics of tidal current ridges.

关 键 词：RADIAL SANDBANKS TIDAL CURRENT RIDGE three-dimensional numerical model to-and-fro CURRENT sub-transverse CIRCULATION current. 

分 类 号：P731.2[天文地球—海洋科学]