于守兵,凡姚申. 黄河三角洲海岸线标准对陆地面积的影响[J]. 海洋地质前沿,2021,37(2):1-9. DOI: 10.16028/j.1009-2722.2020.026
    引用本文: 于守兵,凡姚申. 黄河三角洲海岸线标准对陆地面积的影响[J]. 海洋地质前沿,2021,37(2):1-9. DOI: 10.16028/j.1009-2722.2020.026
    YU Shoubing, FAN Yaoshen. COASTLINE CRITERIA FOR LAND AREA OF THE HUANGHE RIVER DELTA AND THEIR SIGNIFICANCE[J]. Marine Geology Frontiers, 2021, 37(2): 1-9. DOI: 10.16028/j.1009-2722.2020.026
    Citation: YU Shoubing, FAN Yaoshen. COASTLINE CRITERIA FOR LAND AREA OF THE HUANGHE RIVER DELTA AND THEIR SIGNIFICANCE[J]. Marine Geology Frontiers, 2021, 37(2): 1-9. DOI: 10.16028/j.1009-2722.2020.026

    黄河三角洲海岸线标准对陆地面积的影响

    COASTLINE CRITERIA FOR LAND AREA OF THE HUANGHE RIVER DELTA AND THEIR SIGNIFICANCE

    • 摘要: 黄河三角洲陆地面积变化关系到河口综合治理、国土规划、自然保护区发展以及油气资源的勘探开发等战略布局。已有研究采用的海岸线标准主要有:根据实测资料确定的高潮线、低潮线、黄海0 m线和黄海−2 m线以及从卫星遥感影像提取的高潮线、低潮线和瞬时水边线。近代黄河三角洲、现代黄河三角洲、清水沟流路范围、清8汊河范围内采用不同的海岸线标准得到的亿吨来沙造陆面积(造陆效率)成果存在较大差别。采用影像特征海岸线得到的部分时段造陆效率偏差较大,其原因主要与黄河三角洲沿岸发育的坡度平缓的广阔潮滩有关。从黄河三角洲海岸演变特征出发,采用黄海−2 m线作为海岸线基本上包含了径流与海洋动力作用最强烈区域,适宜于研究海岸淤进和蚀退,以及由此产生的对流路出汊、摆动和黄河下游的反馈影响。已有动态平衡沙量研究因采用海岸线标准不一致存在较大差别,而且三角洲长时期以淤进为主,蚀退时段的样本较少。在目前行河流路处于长期相对稳定的局面下,研究清水沟流路范围内海岸动态稳定的沙量更有实践意义。

       

      Abstract: The land area of the Huanghe River Delta is significant to the integrated estuary administration and management, national land planning, conservation and development of natural reserves and oil-gas exploitation and development. The adopted criteria for the time being include high tide line, low tide line, 0 m line upon the Huanghai datum and −2 m line upon the Huanghai datum from measured data, and high tide line, low tide line, water body line from Remote sensing satellite images. There are large differences in the figures of land increment per 1×108 t sediment or so-called “land increment efficiency” among the data from the Lijin Station, the modern delta, the Qingshuigou course, and the Qing 8 course. The coastline from satellite images have big differences in some periods, due to the broad tidal flat with gentle slope. It is suggested that the −2 m line on the Huanghai datum is proper for studies of coastal progradation and retrogradation, water course avulsion and migration, and influences on lower reaches of the River. The main problem of the existing studies on the sediment for coastline dynamic balance is that data are not sufficient from recession periods. In order to maintain long term stabilization of current course, more work is required to study the sediment budget and coastal dynamic balance along the Qingshuigou course.

       

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