Variation of the processes of flow and sediment and its effect on epeirogenesis of seacoast in the Yellow River estuary
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摘要: 采用实测资料分析和理论探讨的方法,研究了黄河口海岸造陆与水沙过程变异的关系.研究结果表明:黄河口陆域来水来沙是海岸造陆的基础,来水来沙越大,造陆面积越大,水沙过程变异后,由于水沙的急剧减少,黄河口海岸造陆速度减缓,典型岸段严重蚀退造陆面积也大幅减小;尾闾河道萎缩对海岸造陆影响较大,萎缩越严重,越不利于海岸的造陆发育.运用多元回归分析建立了黄河口海岸造陆水沙临界综合关系式,可供科学调控来水来沙实施黄河口海岸防护过程中参考.Abstract: Aimming at the problem of the erosion of parts of seacoast after the variation of flow and sediment in the Yellow River estuary,we research on the relationship between the epeirogenesis of seacoast and the variation of flow and sediment using the methods of f ield data analyses and theoretical study.The research results show that the flow and sediment coming from land is the foundation of the epeirogenesis of seacoast,the bigger the incoming flow and sediment is the bigger the area of the epeirogenesis.After the variation of flow and sediment,the epeirogenic area of seacoast reduces greatly because the decrease of the incoming flow and sediment The atrophy of tail channels affects greatly on epeirogenesis of seacoast,the heavier the atrophy of tail channels,the less advantageous the epeirogenesis of seacoast.By using the methods of the regress analysis,the synthetical critical mathematical relationship of the epeirogenesis of seacoast is established It provides reference usage during the process of controlling the incoming flow and sediment to defend seacoast in the Yellow River estuary.
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