摘要
对套尔河口海岸动态及拦门沙成因进行了分析,结果表明,拦门沙物质组成为粗粉砂,源于历史上黄河自本区附近入海泥沙。目前黄河入海泥沙对本区没有直接影响。河口西侧海岸,处于冲刷状态,多年平均后退速率小于1m。水下岸坡处在冲刷阶段,由近30年(1959～1989)与前104年(1855～1959)比较,年均冲刷速率呈减缓趋势。东风港至拦门沙段航道,多年来处于稳定状态,局部地段为冲刷。河口外普遍冲刷造成拦门沙地段距离缩短,对航道的维护有利。
Taoer River Mouth is on the southwest coast of the Bohai Bay.The development of local industry,agriculture and water transport has been confined by the shallow waterway due to the sand bar at the mouth.In this paper the coast process and sand,bar deformation is analyzed on the basis of field investigation and deposit data.The sand bar is compdsed of coase silt transported by the Yellow River in history.The coast on the west side of the river mouth is eroded at the average rate of less than 1m/ a.The coast under water is in the stage of erosion.But the erosion rate is slowing down.The waterway between the Dongfeng Port and the sand bar has been stable over the years while the part outside the river mouth under erosion condition,which is very beneficial to the waterway maintenance.
出处
《海洋通报》
CAS
CSCD
北大核心
1991年第3期69-76,共8页
Marine Science Bulletin
