摘要
渤海湾西南岸大口河口至马颊河口一线分布着大口河岛、高坨子、棘家堡子和汪子岛等贝壳堤(岛)。以2003年10月10—12日发生的50年一遇的温带风暴潮为动力条件,结合对历史文献、海图、卫星影像等资料的分析,利用FVCOM和SWAN数值模式,耦合模拟了黄河废弃三角洲不同时期代表性岸线形态约束下贝壳堤近岸的波浪、潮流等动力响应特征。贝壳堤的规模、形态、分布等受特殊的岸线形态、海滩物质组成以及由ENE、NE强风驱动的风暴潮动力场等所控制。由于黄骅港和滨州港超长防波堤的掩护作用,在同等风暴潮强度下,贝壳堤近岸的潮位、流速和波高均有所减小,有利于贝壳堤的加积和稳定性。
Along the coastline from the Dakou river mouth to Taoer river mouth in SW Bohai Bay,chenier ridges have been found at the places of Dakouhedao, Gaotuozi, Jijiapuzi and Wangzidaos. Hiistorical documents, sea charts and satellite images show that the characteristics of the coastline were formed by the shifting of the Yellow River mouth and the consequent evolution of the delta plain. A storm surge, which came once every 50 years, happened on October 10-12, 2003. The numerical model of FVCOM ＋SWAN is adopted in this paper to simulate and investigate the nearshore wind-driven wave, and flow fields for different coastline configurations. The results demonstrate that the dimensions, shapes and distributions of chenier ridges are controlled and reworked by coastline configurations, material sources and ENE, NE winddriven hydrodynamics. The intensity of the storm surge, flow power and wave height will be reduced moderately by the chenier ridges due to the sheltering effect of the long breakwaters of the Huanghua Port and the Binzhou Port. This study will help preserve the existing chenier system and favor the formation of new chenier ridge.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2015年第6期25-32,共8页
Marine Geology & Quaternary Geology
基金
国家自然科学基金项目(51179211)
