摘要
渤海湾西南岸大口河的滨岸地带,是古黄河分流河口经800年废弃破坏演变而形成的粉砂淤泥质潮汐通道体系。目前此地海岸已进入废弃演变的老年期而渐趋稳定。本文研究了大口河潮汐通道体系的地貌、动力和泥沙搬运特点,指出潮汐通道体系中的堡岛弧是波浪侵蚀废弃三角洲物质纵向搬运泥沙,并横向向陆运动的产物。现今堡岛弧已近于消亡阶段,海岸障壁作用已经很小,故海水大举入侵通道,潮汐通道体系内的大部分地区以涨潮动力和涨潮输沙占优势。
The Dakouhe coast,on the boundary between Hebei and Shandong Provinces,is a tidal inlet system evolving from the abandoned distributary mouth of ancient Yellow River 800 years ago. At present the deltaic shoreline is at senile stage and tends to be stable. The features of tidal inlet system in morphology,hydrodynamics and sediment transport are studied based on the data of fiele investigation. Evidences show that the barrier island arcs, which are resulted from the longshore and shoreward sediment transport of the deltaic materials eroded by wave action, are close to disappearance now; the hydrodynamics and sediment transport during the flood tidal stage dominates the processes of the tidal inlet system.
出处
《海洋通报》
CAS
CSCD
北大核心
1993年第4期29-35,共7页
Marine Science Bulletin
关键词
古黄河
河口
潮汐通道体系
海岸
Dakouhe River area
ancient Yellow River
distributary mouth
abandoned delta
tidal inlet system
