丁伟, 张功瑾, 路川藤, 白一冰, 罗小峰.基于海洋动力学机制的藻团漂移模式[J].海洋工程,2025,(4):196~206 |
基于海洋动力学机制的藻团漂移模式 |
Improved algal drift model based on ocean dynamics mechanism |
投稿时间:2024-06-11 |
DOI:10.16483/j.issn.1005-9865.2025.04.017 |
中文关键词: 藻团漂移 实测跟踪 风流作用 漂移路径 数值模拟 |
英文关键词:algal drift field tracking wind-current interaction drift trajectory numerical simulation |
基金项目:江苏省海洋科技创新项目(JSZRHYKJ202206);中央级公益性科研院所基本科研业务费专项资金项目(Y222007) |
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中文摘要: |
海洋藻团的漂移轨迹及规律是其动力学机制的宏观表现。在三维海洋动力学模型基础上,构建了基于惯性力和历史Baseet力等的拉格朗日藻团漂移模式,通过对藻团漂移路径的模拟结果与实际海洋跟踪监测结果进行对比,验证了漂移模式的准确性。应用该模式研究了风流共同作用下藻团的漂移轨迹及平面分布。结果表明:考虑藻团质量的惯性力作用及风的拖曳力作用建立的藻团漂移模式可以更加准确地反映藻团在风-流致漂移中运动滞后机制;纯潮流作用下,水质点与藻团漂移的轨迹接近,潮流作用会导致藻团发生聚集并使其成为条带状;风生流及其直接拖曳力的作用使得藻团有明显的定向性,风流共同作用下藻团的移动方向位于平均风场方向与余流方向之间。 |
英文摘要: |
The drift trajectories and patterns of marine algal blooms represent the macroscopic manifestations of their dynamic mechanisms. This study develops a Lagrangian drift model for algal blooms based on a three-dimensional ocean dynamics framework, incorporating factors such as inertial force and historical Baseet force. By comparing the simulated drift paths of algal blooms with actual oceanic tracking and monitoring data, the accuracy and reliability of the model are validated. The model is then applied to study the drift trajectory and plane distribution of algal masses under the combined action of wind and current.Results show that accounting for the inertial force of the algal mass and the drag force of wind can more accurately reflect the motion lag mechanism in wind-current-induced drift. Under pure tidal current conditions, the drift trajectory of the algal mass is close to that of the water quality point, and tidal currents tend to cause the algal mass to aggregate into bands. Wind-induced flow and its direct drag effect impart a clear orientation to the algal mass, whose drift direction lies between the mean wind field direction and the residual current direction. |
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