基于哨兵2号卫星遥感影像的2018年苏北浅滩漂浮绿藻时空分布特征研究

袁超; 张靖宇; 肖洁; 傅明珠; 张学雷; 崔廷伟; 王宗灵

doi:10.3969/j.issn.0253-4193.2020.08.002

基于哨兵2号卫星遥感影像的2018年苏北浅滩漂浮绿藻时空分布特征研究

doi: 10.3969/j.issn.0253-4193.2020.08.002

袁超^{1, 2,},
张靖宇¹,
肖洁^{1, 2},
傅明珠^{1, 2},
张学雷^{1, 2, ,},
崔廷伟¹,
王宗灵^{1, 2}

1.
自然资源部第一海洋研究所海洋生态环境科学与技术重点实验室，山东青岛 266061
2.
青岛海洋科学与技术试点国家实验室海洋生态与环境科学功能实验室，山东青岛 266237

基金项目: 国家重点研发计划（2016YFC1402100）。

详细信息

作者简介:
袁超(1991-)，男，山东省新泰市人，博士，主要从事海洋生态学方面的研究。E-mail：yuanchao@fio.org.cn

通讯作者:
张学雷，研究员，主要从事海洋生态学方面的研究。E-mail：zhangxl@fio.org.cn

中图分类号: X55；X87
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- 文章访问数: 587
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- 被引次数: 0
出版历程
- 收稿日期: 2019-11-10
- 修回日期: 2020-03-23
- 网络出版日期: 2020-11-18
- 刊出日期: 2020-08-25

The spatial and temporal distribution of floating green algae in the Subei Shoal in 2018 retrieved by Sentinel-2 images

Yuan Chao^{1, 2
,},
Zhang Jingyu¹,
Xiao Jie^{1, 2},
Fu Mingzhu^{1, 2},
Zhang Xuelei^{1, 2
, ,},
Cui Tingwei¹,
Wang Zongling^{1, 2}

1.
Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
2.
Laboratory of Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China

摘要

摘要: 黄海浒苔绿潮自2007年以来连年暴发，但对漂浮绿藻在其源地—苏北浅滩的分布、发生和发展过程仍缺乏精细刻画。本文主要采用哨兵2号卫星遥感影像，对2018年苏北浅滩的漂浮绿藻信息进行提取，结合地形、微波+红外融合海表温度和CCMP海面风场数据，分析了影响漂浮绿藻时空分布的重要环境因子。结果表明：漂浮绿藻于5月23日在苏北浅滩南部首次通过遥感影像被探测到，在6月逐渐向北发展扩大，在7月中旬消失。漂浮绿藻最早可追溯至浅滩中心紫菜养殖筏架区边缘，而后沿潮沟形成宽度为10～200 m、断续绵延数十千米的条带。在黄海绿潮发展过程中，浅滩持续向北及外海输送漂浮绿藻。在浅滩以北，漂浮绿藻的分布和漂移与海面风向一致。本研究结果可为黄海绿潮的早期预警和防控提供依据。
- 浒苔绿潮 /
- 苏北浅滩 /
- 哨兵2号 /
- 海表温度 /
- 风向
Abstract: Since 2007, the annually Yellow Sea green tide (YSGT) have caused significant economic losses and serious social impacts in China. Previous research indicated that the floating green algal was originated from Subei Shoal, southwestern Yellow Sea, while the early development of floating green algae in the shoal remains unclear. Using Sentinel-2 high-resolution images, we extracted the floating green algae information in 2018. The effects of topography, sea surface temperature and sea surface wind on the distribution and development of floating green algae were studied using CCMP sea wind data and Microwave+IR Signal Fusion SST sea surface temperature data. The results showed that the first sign of floating green algae by satellites was detected in the south of Subei Shoal on May 23. The floating green algae expanded northwards in June, and decayed on July 13. The floating green algae could be traced back to the edge of Prophyra aquaculture area, aggregated and formed stripes along the sand grooves in the Subei Shoal. These stripes stretched tens of kilometers with width of 10–200 m and existed throughout the development of YSGT. In the region of north to Subei Shoal, the distribution and drifting of floating green algae were highly associated with wind directions. Based on our research, it is feasibleand cost-effective to collect and remove the floating algae in the Subei Shoal.
- Ulva prolifera green tide /
- Subei Shoal /
- Sentinel-2 /
- sea surface temperature /
- wind direction

HTML全文

图 1 苏北浅滩水深和地形概况

图中红框为研究区域

Fig. 1 Bathymetric topography of the Subei Shoal

The red rectangle indicates study area

下载: 全尺寸图片幻灯片

图 2 2018年6月13日哨兵2号卫星影像中漂浮绿藻信号的现场验证

插入图显示了拍摄地点

Fig. 2 Field verification of floating green algae signal from Sentinel-2 images on June 13, 2018

The locations are shown in the pseudo-colored insert map

下载: 全尺寸图片幻灯片

图 3 2018年不同日期哨兵2号影像的漂浮绿藻（红点）分布（白色区域为云掩膜）

Fig. 3 Time-series distribution of the floating green algae (red dots) in the Subei Shoal in 2018 based on the Sentinel-2 images (the thick clouds are marked by white dots)

下载: 全尺寸图片幻灯片

图 4 2018年苏北浅滩海域漂浮绿藻的外包络面（a）、覆盖面积和分布面积（b）变化

Fig. 4 Temporal changes of envelops (a), coverage and distribution area (b) of the floating green algae in the Subei Shoal in 2018

下载: 全尺寸图片幻灯片

图 5 2018年5月到7月南黄海西部海表温度（等值线，℃）和海面风场（矢量）

Fig. 5 Sea surface temperature (contour) and wind field (vectors) in the southwestern Yellow Sea during May to July, 2018

下载: 全尺寸图片幻灯片

表 1 2018年6月13日不同站位哨兵2号影像中漂浮绿藻信号的现场验证

Tab. 1 Field verification of floating green algae signal by Sentinel image at different stations on June 13, 2018

站位	经纬度	时间	分布状态	NDVI
1	32.887°N，121.298°E	9:49	无	–0.18
2	32.717°N，121.223°E	10:58	稀疏分布	–0.01
3	32.613°N，121.107°E	11:48	宽条带状	0.19
4	32.662°N，121.089°E	13:07	宽条带状	0.27

下载: 导出CSV

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