首页 | 期刊介绍 | 编委会 | 道德声明 | 投稿指南 | 常用下载 | 过刊浏览 | In English
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 23次   下载 0  
分享到: 微信 更多
2018年黄海浒苔分布特征及动力机制分析
韩君君, 黄惠明, 张薇娜, 林伟波
河海大学
摘要:
近些年浒苔绿潮频发于黄海海域,严重影响沿岸生态环境。为揭示2018年黄海浒苔发生和聚集的动力学成因,本文通过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。
关键词:  浒苔 遥感监测 NDVI 动力模型 漂移路径
DOI:10.11759/hykx20191016002
分类号:
基金项目:国家自然科学基金项目(51979096)
Distribution Characteristics and Dynamic Mechanism of Enteromorpha Prolifera in the Yellow Sea in 2018
Hanjunjun, Huanghuiming, Zhangweina, Linweibo
Hohai University
Abstract:
In recent years, Enteromorpha proliferate outbreaks frequently in the Yellow Sea in summer, which seriously impacts on the coastal ecological environment and causes huge social and economic losses. MODIS L1B image data and Normalized Vegetation Index method (NDVI) were used to obtain the initial time and position of the Enteromorpha prolifera in this paper. Base on the 3D hydrodynamic model, a controlled experiment of wind current, tidal current and their combined effects was set up to analyze the influence of various factors on Enteromorpha particles transport. The results show that Enteromorpha particles drift ashore northward with a large transport distance and did not land when it was only under the force of winds. When the weather condition was dominated by tidal current power, the net drift of Enteromorpha particles is small and it is difficult to move northward. Enteromorpha particles drift ashore northward and land under the 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.
Key words:  Enteromorpha  remote sensing monitoring  NDVI  dynamic model  drifting path
版权所有 《海洋科学》编辑部 Copyright©2008 All Rights Reserved
主管单位:中国科学院 主办单位:中国科学院海洋研究所
地址:青岛市南海路七号  邮编:266071  电话:0532-82898755  E-mail:marinesciences@qdio.ac.cn
技术支持:北京勤云科技发展有限公司