渤海赤潮遥感监测方法比较研究  

Comparative studies on remote sensing techniques for red tide monitoring in Bohai Sea

作　　者：姜德娟[1] 王昆 夏云[1,3] JIANG De-juan;WANG Kun;XIA Yun(Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China;Key laboratory of Digital Earth Science,Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;College of Chemistry and Chemical Engineering,Qingdao University,Qingd-ao 266071,China)

机构地区：[1]中国科学院海岸带环境过程与生态修复重点实验室,中国科学院烟台海岸带研究所,山东烟台264003 [2]中国科学院空天信息创新研究院,数字地球重点实验室,北京100094 [3]青岛大学化学化工学院,山东青岛266071

出　　处：《海洋环境科学》2020年第3期460-467,共8页Marine Environmental Science

基　　金：国家自然科学基金项目(41671473);中国科学院战略性先导科技专项(XDA11020305)。

摘　　要：渤海是我国赤潮重灾区,近年来赤潮灾害频发且呈加剧趋势。有效监测渤海赤潮的发生、发展及消亡过程具有重要意义。本研究基于MODIS(moderate resolution imaging spectroradiometer)数据,比较分析了叶绿素浓度异常法、赤潮指数、波段比值法、红波段差值法、Karenia brevis指数等5种方法对渤海赤潮遥感监测的有效性。结果表明:5种方法均能有效监测到天津滨海旅游区附近海域的赤潮,不仅提取的范围与赤潮发生的最大面积相符,而且空间分布也一致。然而,由5种方法提取的秦皇岛附近海域的赤潮信息却表现出明显的差异,其中由叶绿素浓度异常法和波段比值法对赤潮信息的提取结果相对较为合理。因此,无论采用哪种方法进行赤潮监测,均需结合实地调查数据或ERGB(enhanced red-green-blue)影像等资料对不同时间、不同区域发生的赤潮的监测结果进行证实。In Bohai Sea,one of the red-tide worst-hit areas of China,the red-tide disasters occurred frequently and aggravated in recent years.Effectively monitoring the processes of the red tide from happening to extinction is of great significance for Bohai Sea.Based on MODIS(moderate resolution imaging spectroradiometer) data,five methods including the chlorophyll concentration anomalies,the red tide index,the Rrs band ratio method,the red band difference,the Karenia brevis bloom index have been comparatively analyzed to examine their availability for red tide extraction in Bohai Sea.The results showed that these five methods could effectively extract the red tide information in the offshore area of Tianjin Binhai tourism area.Not only the range but also the spatial distribution of remote sensing detection agreed with the fact.In contrast,the red tide extraction by these five methods indicated a distinct difference in the offshore area of Qinhuangdao area,which was relatively reasonable for the chlorophyll concentration anomalies and the band ratio method.However,no matter what the method was used,the field survey data or ERGB(enhanced red-green-blue) composite was necessarily combined to validate the performance of red tide extraction at different times or in different regions.

关 键 词：赤潮 遥感监测 方法比较 渤海 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]