渤海沿岸的许多岸段近期遭受侵蚀后退,海水向陆进侵,海进现象既出现在基岩岬湾岸,也出现在砂砾质的堤坝潟湖岸,以至粉砂淤泥质的贝壳堤平原岸;既见于构造下降岸,又见于构造上升岸。致使老的潟湖泥层出露于现代砂砾质海滩上,水下岸坡底质分布出现异常,淤泥质潮滩衰退,沿岸建筑物遭受破坏。引起海进的原因是地区性的构造下沉、陆源碎屑减少及全球性的海面上升。 Many shore sections along the coast of the Bohai Sea have recently been eroded backwards and the sea water has invaded into the sea. The phenomenon of intrusion occurs both on the basement and promontory banks as well as on the gritty dike lagoon shore, as well as silt- Descending the shore, but also seen in the construction of rising shore. As a result, the old lagoon mud layer was exposed on the modern gravel beach. The sediment distribution of the underwater bank was abnormal, the muddy tidal flat was declining, and the coastal buildings were damaged. The causes of the sea are the regional structural subsidence, the reduction of terrestrial debris and the global sea level rise.