作　　者： ; ; ; ;

机构地区： 海南省海洋开发规划设计研究院

出　　处： 《海洋学研究》 2008年第2期1-12,共12页

摘　　要： 基于ADCIRC与STWAVE模型,对海南新村港潮汐汊道的波浪-潮流联合作用进行了数值模拟,结果表明,S、SE向的平均浪与风暴浪在汊道近岸以产生西向沿岸流为主,SSW向平均浪与风暴浪作用时,在落潮主水道西侧形成东向沿岸流与西向沿岸流的交汇带。风暴浪作用下波生流与潮流的相互作用使瞬时流场与余流场均发生相应的变化。在平均浪作用时,汊道附近流速变化很小,而在风暴浪作用时流速增大,汊道内的涨、落潮流速不对称更为显著。在落潮主水道两侧由于波流联合作用产生涡漩,使动力减弱,从而造成泥沙落淤,而西向沿岸流的存在,使落潮主水道南侧边缘沙坝持续西移,泥沙沿落潮三角洲末端与冲流坝转运,导致新村港汊道口门西侧发育了规模较大的堆积地貌。 Tidal inlet is the waterway which connects lagoon （or bay） with the open sea, and is maintained by the tidal current. Due to its importance in the navigation, aquaculture and fishing, tourism and environmental protection, it receives great attention in the estuarine and coastal study and engineering application. Xincun Inlet, located in the southeast coast of Hainan Island, is a rare natural harbor in this area. It is actually a semi-closed sand bar-tidal inlet-lagoon system with complicated topography and geomorphology. There is no evident runoff comes into the Inlet and wave and tide is the main dynamical factor. The tide is irregular di urual tide with a mean tidal range of 0.69 m and maximum of 1.55 m. The rising tidal current hour is longer while the ebb tidal velocity is greater and the tidal hour and velocity asymmetry shows an ebb-dominated feature. Wind wave is dominant in the area with an annual frequency of 80% and predominant SE and S wave direction with an average percentage of 20% and 19%. The second most frequent wave is from SSE, with a percentage of 15%. The mean wave height is 0.7 m, and the mean wave period is 4.0 seconds. The maximum wave height Based on ADCIRC model coupled with STWAVE model, combined tide-wave simulated and the results are as follows： recorded is 2.58 m action in Xincun Inlet was numerically When the SE mean wave moves shoreward, a longshore current from east to west is generated and becomes shoreward current in the inlet. There are clockwise and anti-clockwise vortexes developed at the east and west sides of the main ebb channel respectively. During a storm the longshore current is basically westward alongshore current and a clockwise vortex is formed to the south of the sand bar. And the wave bulge along the coastline is evident in the storm. The longshore current generated by the S mean wave is basically a westward alongshore current, and a clockwise vortex is formed near the sand bar. When the S storm wave maves shoreward, wave height peak areas near the ebb

关 键 词： 潮汐汉道 波流联合作用 海南新村港

领　　域： [水利工程]