珠江口磨刀门月际尺度地貌演变研究

贾良文; 吕晓莹; 程聪; 贺紫潇

doi:10.3969/j.issn.0253-4193.2018.09.006

珠江口磨刀门月际尺度地貌演变研究

doi: 10.3969/j.issn.0253-4193.2018.09.006

1.
中山大学海洋科学学院, 广东广州 510275
2.
广东省海洋发展规划研究中心, 广东广州 510220

基金项目: 国家重点研发计划项目（2016YFC0402603）；国家自然科学基金（41376101）。

计量
- 文章访问数: 554
- HTML全文浏览量: 8
- PDF下载量: 247
- 被引次数: 0
出版历程
- 收稿日期: 2018-01-30
- 修回日期: 2018-03-21

Study on the morphological evolution of the Modaomen Estuary in monthly scale

1.
School of Marine Science, Sun Yat-Sen University, Guangzhou 510275, China
2.
Research Centre for the Marine Development and Planning of the Guangdong Province, Guangzhou 510220, China

摘要

摘要: 本文基于二维波流耦合泥沙数学模型对磨刀门河口月际尺度地貌演变进行了模拟研究。结果表明：（1）枯季，无波浪作用下，磨刀门河口总体呈淤积状态；波流耦合后，磨刀门河口整体由淤积转为以冲刷为主。洪季，无波浪作用下，磨刀门河口除西汊外均呈淤积状态；波流耦合后，拦门沙内坡与中心区转为冲刷状态，整体仍以淤积为主，但总淤积量减少；（2）月际尺度上，地貌变化幅度为厘米级，洪枯季具有明显差异。不考虑波浪作用下，磨刀门河口洪、枯季均以淤积为主，但洪季淤积幅度更大；波流耦合后，磨刀门河口呈洪淤枯冲的格局；（3）空间上，拦门沙外坡洪淤枯冲，拦门沙顶洪季淤积、枯季变化不大，内坡洪枯季均为冲刷。此外，拦门沙内坡以径潮流作用产生的底切应力为主，外坡以波浪作用引起的底切应力为主。
- 磨刀门河口 /
- 波流耦合 /
- 地貌演变 /
- 月际尺度
Abstract: The 2D wave and current coupled model is established and applied to simulate the morphological evolution of the Modaoment Estuary in monthly scale. The main findings are as follows:(1)In the dry season, the siltation dominates in the estuary without wave,however, siltation turns into erosion in the estuary with current and wave coupled. In the flood season, the siltation dominates in the estuary without wave except erosion in the west main tributary, with current and wave coupled, the siltation still dominates except that siltation turns into erosion in the inner slope and center of the mouth bar with the amount of the siltation reduced. (2)The magnitude of the monthly morphological change is centimeter level with the significant seasonal variation. The siltation dominates in the Modaomen Estuary without wave both the dry season and the flood season, with the larger siltation in the flood season. After the wave and current coupled, siltation dominates in the flood season while erosion dominates in the dry season. (3)Spatially, the outer slope of the mouth bar is silted in the flood season, and eroded in the dry season, the inner slope of the mouth bar is eroded both the flood season and the dry season, the top of the mouth bar is silted in the flood season and little changed in the dry season. In addition, the tidal induced bottom shear stress is dominant in the inner slope of the mouth bar, and wave induced bottom shear stress is dominant in the outer slope of the mouth bar.
- Modaomen Estuary /
- wave-current interaction /
- morphological evolution /
- monthly scale

HTML全文

参考文献(15)

广东省水利电力勘测设计研究院.珠江河口整治近期防洪实施工程可行性研究报告[R].北京,2002. Guangdong Hydropower Planning & Design Institute. Feasibility study report on administration of recent flood control projects in the Pearl River estuary[R]. Beijing, 2002.

Thomasa C G, Spearmanb J R, Turnbullb M J. Historical morphological change in the Mersey Estuary[J]. Continental Shelf Research, 2002, 22(11/13):1775-1794.

Rossington K, Spearman J. Past and future evolution in the Thames Estuary[J]. Ocean Dynamics, 2009, 59(5):709-718.

Saruwatari A,Ingram D M,Cradden L. Wave-current interaction effects on marine energy converters[J].Ocean Engineering,2013,73(15):106-118.

Dai Zhijun, Liu J T, Fu Gui, et al. A thirteen-year record of bathymetric changes in the north passage, Changjiang (Yangtze) Estuary[J]. Geomorphology, 2013,187:101-107.

Dai Zhijun, Liu J T, Wei Wen, et al. Detection of the Three Gorges Dam influence on the Changjiang (Yangtze River) submerged delta[J]. Nature Scientific Reports, 2014, 4:1-7.

谢华亮,戴志军,左书华,等. 1959-2013年长江河口南槽动力地貌演变过程[J]. 海洋工程, 2015, 33(5):51-58. Xie Hualiang, Dai Zhijun, Zuo Shuhua, et al. Morphodynamic processes of the south passage of the Yangtze estuary (1959-2013)[J]. The Ocean Engineering, 2015, 33(5):51-58.

密蓓蓓, 阎军, 庄丽华,等. 现代黄河口地形地貌特征及冲淤变化[J]. 海洋地质与第四纪地质,2010,30(3):31-38. Mi Beibei, Yan Jun, Zhuang Lihua, et al. The topographical and morphological features of modern Yellow River mouth area and their relation to erosional/depositional processed[J]. Marine Geology & Quaternary Geology, 2010, 30(3):31-38.

李春初,田向平,罗宪林,等.西江磨刀门拦门沙的形成演变及口门整治问题[M]//第七届全国海岸工程学术讨论会论文集(上).北京:海洋出版社, 1993:172-181. Li Chunchu, Tian Xiangping, Luo Xianlin, et al. The formation and evolution of the sand bar in Modaomen estuary and its administration[M]//Conference Proceedings of the Seventh National Symposium on Coastal Engineering (Part Ⅰ). Beijing:China Ocean Press, 1993:172-181.

李春初. 珠江河口演变规律及治理利用问题[J]. 泥沙研究, 2002(3):44-51. Li Chunchu. Evolutional processes of the Pearl River estuary and its protective regulation and exploitation[J]. Journal of Sediment Research, 2002(3):44-51.

胡达,李春初,王世俊. 磨刀门河口拦门沙演变规律的研究[J]. 泥沙研究,2005(4):71-75. Hu Da, Li Chunchu, Wang Shijun. Study on evolutional processes of the sand bar in Modaomen estuary[J]. Journal of Sediment Research, 2005(4):71-75.

黄镇国,张伟强. 珠江河口磨刀门的整治与地貌演变[J]. 地理与地理信息科学, 2005, 21(6):61-65. Huang Zhenguo, Zhang Weiqiang. The administration and geomorphological evolution in Modaomen River mouth of Zhujiang estuary[J]. Geography and Geo-Information Science, 2005, 21(6):61-65.

贾良文,吴超羽. 磨刀门河口近期水文动力变化及人类活动对其影响研究[J]. 海洋工程,2007,25(4):46-53. Jia Liangwen, Wu Chaoyu. Hydrodynamic changes of Modaomen estuary in recent decades and impacts of human activities on the changes[J]. The Ocean Engineering, 2007, 25(4):46-53.

贾良文, 任杰, 徐治中, 等. 磨刀门拦门沙区域近期地貌演变和航道整治研究[J]. 海洋工程, 2009, 27(3):76-84. Jia Liangwen, Ren Jie, Xu Zhizhong, et al. Morphological evolution in recent years and waterway regulation of the sandbar area in the Modaomen estuary[J]. The Ocean Engineering, 2009, 27(3):76-84.

梁娟, 李春初. 人类活动影响下磨刀门河口的泥沙输运沉积[J]. 泥沙研究, 2010(3):67-72. Liang Juan, Li Chunchu. Tendency of sediment transport and sedimentation in the Modaomen estuary under influence of human activities[J]. Journal of Sediment Research, 2010(3):67-72.

施引文献

资源附件(0)

访问统计