秋季环雷州半岛海域浊度空间分布特征  

Spatial Distribution of Turbidity in the Sea Area Surrounding Leizhou Peninsula in Autumn

作　　者：罗亚飞 陈炤光[1] 李志强 付东洋 余果 徐华兵 钟小僅 LUO Ya-fei;CHEN Zhao-guang;LI Zhi-qiang;FU Dong-yang;YU Guo;XU Hua-bing;ZHONG Xiao-jin(College of Electronics and Information Engineering,Guangdong Ocean University/Provincial Engineering and Technology Research Center of Marine Remote Sensing and Information Technology/Key Laboratory of Climate,Resources and Environment on the Continental Shelf and Deep Seas,Guangdong Ocean University,Zhanjiang 524088,China;Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China)

机构地区：[1]广东海洋大学电子与信息工程学院/广东省海洋遥感与信息技术工程技术研究中心/广东省高等学校陆架及深远海气候、资源与环境重点实验室,广东湛江524088 [2]中国科学院海洋地质与环境重点实验室,中国科学院海洋研究所,山东青岛266071

出　　处：《广东海洋大学学报》2022年第3期53-61,共9页Journal of Guangdong Ocean University

基　　金：广东省教育厅创新强校工程项目(2019KZDXM019);南方海洋科学与工程广东省实验室(湛江)资助项目(ZJW-2019-08);中国科学院海洋地质与环境重点实验室开放基金课题(MGE2020KG12);CYL2020高水平大学重点学科-海洋科学(231420003);广东海洋大学高水平海洋学科团队项目(0002026002009);广东省研究生学术论坛项目(230420003);广东海洋大学2019年“冲一流”学科建设平台项目(231419026);广东海洋大学博士科研启动项目(R20010);湛江市创新创业团队引育“领航计划”项目(211207157080994)。

摘　　要：【目的】研究秋季环雷州半岛海域浊度空间分布特征。【方法】建立基于哨兵3-OLCI波段差(B8-B16)的浊度反演模型,利用经C2RCC大气校正后的哨兵3-OLCI影像并结合实测数据综合分析秋季环雷州半岛海域的浊度平面和断面分布特征。【结果与结论】秋季环雷州半岛海域浊度平面分布特征为从近岸向外海逐渐降低,表层浊度范围为0~50 NTU,底层浊度范围为0~200 NTU,低浊度水体主要分布于离岸较远的外海和琼州海峡中央水道,高浊度水体主要分布在雷州半岛南岸的灯楼角近岸、西岸的东场湾和流沙湾以及东岸的外罗门水道和东南码头近岸。浊度断面分布特征为随水深的增加而升高,且半岛东西两侧的浊度分布特征为南高北低。复杂的水动力过程、人类活动和热带气旋是影响环雷州半岛海域浊度分布的主要因素。【Objective】To investigate the spatial distribution of turbidity in the sea area surrounding Leizhou peninsula in Autumn.【Method】The turbidity inversion model was established with the Sentinel 3-OLCI B8-B16 band combination.Both the Sentinel 3-OLCI corrected by C2RCC and measured turbidity data were used to comprehensively analyze the horizontal and vertical distribution characteristics of turbidity in the sea area surrounding Leizhou peninsula.【Result and Conclusion】The turbidity is higher in the near shore aera than that in the offshore area ranging from 0 to 50 NTU and from 0 to 200 NTU respectively in the surface and bottom layers of the sea area surrounding Leizhou peninsula in Autumn.Low turbid waters are mainly distributed in the offshore sea area far away from Leizhou peninsula and the central waterway of Qiongzhou strait.Highly turbid waters are mainly distributed in the coast waters of Dengloujiao in the south coast of Leizhou peninsula,Dongchang bay and Liusha bay in the west coast,and Wailuomen waterway and Dongnan wharf in the east coast.The turbidity increases with the increasing of water depth,and it is higher in the south than that in the north according to the turbidity transection distributed on the each side of the Leizhou peninsula.Complex hydrodynamic processes,human activities and tropical cyclone are the major factors to affect the distribution of turbidity in the sea area surrounding Leizhou peninsula.

关 键 词：环雷州半岛海域 浊度 分布特征 哨兵3-OLCI 

分 类 号：X832[环境科学与工程—环境工程]