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遥感技术与应用  2019, Vol. 34 Issue (2): 435-444    DOI: 10.11873/j.issn.1004-0323.2019.2.0435
遥感应用     
南海岛礁附近悬浮泥沙时空分布的遥感研究
殷宇威1,2,唐丹玲1,2,刘宇鹏1,2
(1.中国科学院南海海洋研究所热带海洋环境国家重点实验室,海洋生态环境遥感中心,广东 广州 510301;
2.中国科学院大学,北京 100049)
 
RemoteSensing of Spatial-temporal Distribution of Suspended Sediment Surrounding Islands and Reefs in the South China Sea#br#
Yin Yuwei1,Tang Danling1,Liu Yupeng 1,2 
(1.State Key Laboratory of Tropical Oceanography,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China;2.University of Chinese Academy of Sciences,Beijing 100049,China)
 全文: PDF(19058 KB)  
摘要: 岛礁附近海域的悬浮泥沙分布时空变化对研究岛礁生态环境有重要影响。基于30 m高分辨率的Landsat 8陆地成像仪影像,利用经验算法反演南海岛礁附近水体悬浮泥沙浓度。研究结果显示,南海永暑礁有3个明显的高悬浮泥沙区,位于西南部、东北部和潟湖,环礁美济礁和渚碧礁的高悬浮泥沙区主要位于潟湖内。在时间序列上,悬浮泥沙增加主要出现在岛礁填岛阶段。在空间上,悬浮泥沙较高值分布最远约离岛10 km,基本分布面积在25 km2以内。高悬浮泥沙分布区的方位也与同期海域的物理环境,特别是风场和流场的方位相关。岛礁建设活动与海域物理条件在短期内对附近海域悬浮泥沙分布造成明显影响,填岛工程完成约14 d后,悬浮泥沙基本恢复至原有水平。

关键词: 南海悬浮泥沙岛礁建设时空分布
    
Key words:  Spatial-temporal distribution of Suspended Sediment(SS) in the waters near the islands and reefs have important effect on the ecological environment of reefs.Landsat-8 Operational Land Imager(OLI) data    with a resolution of 30 m    were applied to retrieve SS concentration using empirical algorithm.Results showed three obvious high SS areas    the southwest part    the northeast part and its lagoon surrounded Yongshu Island;While    in the Meiji and Zhubi Island    high SS areas appeared mostly in the lagoon.Time series data indicated that the SS increased mainly during islands and reefs building period.The farthest range of SS distribution is about 10 km away from the island    and the maximum influenced area is about 25 km2.At the same time    the directions of SS distribution well matched with directions of wind and current.These islands and reefs building activities and physical situations significantly affected SS distribution in the island environments during a certain period of time    and the SS concentration restored to normal levels after islands and reef buildings finished.

收稿日期: 2017-05-25 出版日期: 2019-05-13
ZTFLH:  TP79  
基金资助:

国家自然科学基金重点项目(41430968),21世纪海上丝绸之路协同创新中心重大项目(2015HS05)。


作者简介: 殷宇威(1992-),男,湖北仙桃人,硕士研究生,主要从事海洋环境生态遥感研究。E-mail:yinyuwei14@mails.ucas.ac.cn.
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引用本文:

殷宇威, 唐丹玲, 刘宇鹏. 南海岛礁附近悬浮泥沙时空分布的遥感研究[J]. 遥感技术与应用, 2019, 34(2): 435-444.

Yin Yuwei, Tang Danling, Liu Yupeng. RemoteSensing of Spatial-temporal Distribution of Suspended Sediment Surrounding Islands and Reefs in the South China Sea#br#. Remote Sensing Technology and Application, 2019, 34(2): 435-444.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2019.2.0435        http://www.rsta.ac.cn/CN/Y2019/V34/I2/435

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