摘要
对2002年8月、2004年8月2次河口拦门沙区水下地形测验及河口段河道地形测量的水沙条件、断面、地形资料等进行了对比分析,结果表明：①2002～2004年,黄河口经历了蚀退、延伸、再次蚀退、再次延伸的4个阶段;②河口河道比降、河口海洋动力、河口边界等已发生了重大变化,河口演变进程面临重大转折;③河口口门前方产生一个最大淤积厚度中心,最大淤积厚度超过10 m,1～10 m淤积厚度等值线依次层层嵌套,淤积厚度超过1.0 m的范围仅占河口拦门沙区面积的12%,淤积量却占到总淤积量的75.1%;④2年间河口口门区域造陆面积共约13 km2;⑤2002年7月至2004年7月,利津水文站冲淤平衡计算差值为1.47亿t。
The paper conducts correlation analysis on the data of silt-discharge condition,cross-section and topography of underwater topographic survey at sandbar area and channel topographic survey at the estuary conducted in August 2002 and August 2004 respectively.The outcomes show that a) in 2002~2004 period,the Yellow River estuary has gone through four phases of erosion,extension,re-erosion and re-extension;b) the channel gradient,marine dynamic force and boundary of estuary have changed greatly and the process of estuary evolution faces a significant turn;c) there is a deposited area,the sedimentation thickness from 1~10 m formed in front of estuary outlet.The area of sedimentation thickness greater than 1.0 m makes up 12% of sandbar area and sedimentation volume 75.1% of the total;d) the created land area at sandbar region during the two years is about 13 km2 and;e) from July 2002 to July 2004,the differential value of scour and fill equilibrium calculation of Lijin Hydrometric Station is 147 million tons.
出处
《人民黄河》
CAS
北大核心
2008年第8期28-29,共2页
Yellow River
关键词
冲淤演变
河口形态
调水调沙
黄河口
scour and fill evolution
estuarial morphology
a regulated discharge regime
the Yellow River estuary
