渤海湾曹妃甸80年代以来海岸剖面变化研究

Study on the Coastal Profile Changes of the Caofeidian Area in the Bohai Sea since 1983

依据曹妃甸地区1983、1996、1997三个年份10条海岸剖面资料,估算了该区海岸剖面的年际间与季节间的侵蚀堆积量以及变化速率,分析了海岸剖面的变化规律,认为季节性的风浪作用会造成浅滩的侵蚀,而长期的各种因素综合作用则以水下斜坡受蚀、浅滩堆积、整个海岸剖面缓慢向陆移动为主.曹妃甸地区本世纪以来海岸变化主要受波浪作用和缺少泥沙供应的影响,同时全球海平面上升、地面沉降和强风暴潮等因素亦不可忽略.

Based upon ten coastal profiles in 1983、1996 and 1997 in the Caofeidian area along the northwest coast of the Bohai Sea, the quantity and the annual/seasonal rate of erosion and accumulation are estimated, and the trend of coastal evolution and the factors which play an important role in modeling the coastal morphologies are also discussed. The main trend of coastal changes is moving slowly landward. It is suggested that the erosive process of waves and the shortage of sediment supply are the main factors that affect the coastal changes in the Caofeidian area.