| 2018年黄海浒苔分布特征及动力机制分析 |
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| 引用本文： | 韩君君,黄惠明,张薇娜,林伟波.2018年黄海浒苔分布特征及动力机制分析[J].海洋科学,2020,44(6):37-44. |
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| 作者姓名： | 韩君君 黄惠明 张薇娜 林伟波 |
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| 作者单位： | 河海大学港口海岸与近海工程学院,江苏南京 210098;江苏省海涂研究中心,江苏南京 210098 |
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| 基金项目： | 国家自然科学基金项目（51979096） |
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| 摘 要： | 为揭示2018年黄海浒苔发生和聚集的动力学成因，通过MODIS L1B影像数据和归一化植被指数法（NDVI）获取浒苔发生的初始时刻和位置。以三维水流动力模型为基础，设立风海流、潮流以及二者共同作用的对照实验，分析各要素对浒苔粒子输移的影响。结果表明，在风海流单独作用下，浒苔向北迁移但未登陆；在潮流动力单独驱动下，浒苔净漂移量小，较难向北发生净输移；二者共同作用下，浒苔粒子向北输移登陆，后报轨迹与遥感图像对比吻合良好，进一步验证了风在浒苔迁移过程中占主导作用。
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| 关 键 词： | 浒苔 遥感监测 NDVI 动力模型 漂移路径 |
| 收稿时间： | 2019/10/16 0:00:00 |
| 修稿时间： | 2019/11/7 0:00:00 |
Distribution characteristics and dynamic mechanism of Enteromorpha prolifera in the Yellow Sea in 2018 |
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| HAN Jun-jun,HUANG Hui-ming,ZHANG Wei-n,LIN Wei-bo.Distribution characteristics and dynamic mechanism of Enteromorpha prolifera in the Yellow Sea in 2018[J].Marine Sciences,2020,44(6):37-44. |
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| Authors: | HAN Jun-jun HUANG Hui-ming ZHANG Wei-n LIN Wei-bo |
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| Institution: | College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China; Tidal Flat Research Center of Jiangsu Province, Nanjing 210098, China |
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| Abstract: | In recent years, Enteromorpha prolifera outbreaks have become frequent in the Yellow Sea in summer. These outbreaks severely affect the coastal ecological environment and cause huge social and economic losses. In this study, MODIS L1B image data and Normalized Difference Vegetation Index method (NDVI) were used to obtain the initial time and position of Enteromorpha prolifera. Using a three-dimensional hydrodynamic model, a controlled experiment of wind current and tidal current and their combined effects was performed to analyze the influence of various factors on the transport of Enteromorpha prolifera. The results show that Enteromorpha prolifera particles drift ashore northward over a large distance and do not land only under the force of winds. When the weather condition is dominated by tidal current power, the net drift of Enteromorpha prolifera particles is small, and it northward movement is difficult. Enteromorpha prolifera particles drift ashore northward and land under the combined force of winds and tides. The drift trail in the hindcast is in good agreement with the remote-sensing images, and the wind played a dominant role in the migration process. |
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| Keywords: | Enteromorpha prolifera remote sensing monitoring Normalized Difference Vegetation Index (NDVI) dynamic model drifting path |
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