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人工岛建设对海口湾沉积特征与泥沙运移的影响

肖哲宇 戚洪帅 蔡锋 刘根 赵绍华 朱君 雷刚 尹航

肖哲宇,戚洪帅,蔡锋,等. 人工岛建设对海口湾沉积特征与泥沙运移的影响[J]. 海洋学报,2022,44(3):137–146 doi: 10.12284/hyxb2022001
引用本文: 肖哲宇,戚洪帅,蔡锋,等. 人工岛建设对海口湾沉积特征与泥沙运移的影响[J]. 海洋学报,2022,44(3):137–146 doi: 10.12284/hyxb2022001
Xiao Zheyu,Qi Hongshuai,Cai Feng, et al. The impact of artificial island construction on sedimentary characteristics and sediment transport in the Haikou Bay[J]. Haiyang Xuebao,2022, 44(3):137–146 doi: 10.12284/hyxb2022001
Citation: Xiao Zheyu,Qi Hongshuai,Cai Feng, et al. The impact of artificial island construction on sedimentary characteristics and sediment transport in the Haikou Bay[J]. Haiyang Xuebao,2022, 44(3):137–146 doi: 10.12284/hyxb2022001

人工岛建设对海口湾沉积特征与泥沙运移的影响

doi: 10.12284/hyxb2022001
基金项目: 国家自然科学基金(41930538)。
详细信息
    作者简介:

    肖哲宇(1997-),男,湖北省荆州市人,主要从事海洋地质方面的研究。E-mail:roger_xzy@126.com

    通讯作者:

    戚洪帅(1980-),男,山东省日照市人,研究员,主要从事海岸动力地貌研究。E-mail:qihongshuai@tio.org.cn

  • 中图分类号: P736.21

The impact of artificial island construction on sedimentary characteristics and sediment transport in the Haikou Bay

  • 摘要: 近年来,人工岛被广泛应用于沿海地区的填海造陆工程以快速获得优质土地,但大面积的人工岛建设会对近岸海底沉积物的分布模式及输运过程产生重要影响。为认识人工岛建设后沉积物变化与运移特征,本文以南海明珠人工岛对海口湾的影响为例,根据人工岛建设前后分别在海口湾近岸采集的底质表层沉积物分析了沉积物特征变化,结合沉积动力分析及粒径趋势分析等方法,讨论了人工岛建设对海口湾表层沉积物性质及运移的影响。研究结果表明,在人工岛建设后,湾内表层沉积物细粒组分增加、粒径减小、分选变差;人工岛修建造成的海口湾沉积动力条件减弱是湾内沉积物变细、泥沙运移方向改变的重要原因。
  • 图  1  南海明珠人工岛及研究区位置

    Fig.  1  Location of study area and Nanhaimingzhu artificial island

    图  2  2009年(a)和2019年(b)海口湾采样站位

    Fig.  2  Sample stations in the Haikou Bay in 2009 (a) and 2019 (b)

    图  3  人工岛建设前(a)和建设后(b)表层沉积物类型

    Fig.  3  Surface sediment types before the construction (a) and after the construction (b) of artificial island

    图  4  表层沉积物各组分含量变化

    Fig.  4  Contents changes of surface sediment components

    图  5  表层沉积物粒度参数变化

    a、b. 人工岛建设前后平均粒径;c、d. 人工岛建设前后分选系数

    Fig.  5  Grain size parameters changes of surface sediment

    a, b. Average grain size before and after the construction of artificial island; c, d. sorting coefficient before and after the construction of artificial island

    图  6  人工岛建设前后表层沉积物粒径频率分布曲线

    a. 两次采样位置接近的站位;b. 采样重合区域内所有站位

    Fig.  6  Frequency distribution curves of surface sediment grain size before and after the construction of artificial island

    a. Two nearby stations in twice samplings; b. all stations in coincidence area in twice samplings

    图  7  表层沉积物Flemming三角图

    Fig.  7  Flemming’s ternary diagram of surface sediment sample stations

    图  8  海口湾表层沉积物运移趋势

    a. 人工岛建设前;b. 人工岛建设后;箭头代表沉积物运移的趋势方向

    Fig.  8  Trend of surface sediment transport in the Haikou Bay

    a. Before the construction; b. after the construction; arrows represents the direction of trend of sediment transport

    图  9  人工岛建设后涨潮流(a)和落潮流(b)流速变化模拟(据文献[38] 修改)

    Fig.  9  Numerical simulation result of flood current (a) and ebb current (b) speed after the construction of artificial island (modified from reference [38])

    图  10  人工岛建设前后水深变化及波影区岸线变化

    a. 水深变化;b. 岸线变化,采用2010年、2019年地形

    Fig.  10  Changes of water depth and shoreline in shadow zone before and after the construction of artificial island

    a. Water depth variation; b. shoreline variation from topographic data in 2010 and 2019

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  • 收稿日期:  2020-10-07
  • 修回日期:  2021-02-17
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