湛江港湾及邻近海域有色溶解有机物光谱吸收特性分析  

Optical Characteristics of Colored Dissolved Organic Matter in Zhanjiang Bay and Its Adjacent Sea Areas

作　　者：余果[1,2] 廖珊 付东洋 蒋城飞 李薛[1,2] YU Guo;LIAO Shan;FU Dong-yang;JIANG Cheng-fei;LI Xue(Guangdong Ocean University, College of Oceanography and Meteorology, Zhanjiang 524088 China;Guangdong Ocean Remote Sensingand Information EngineeringTechnology Research Center,Zhanjiang 524088, China)

机构地区：[1]广东海洋大学海洋与气象学院,广东湛江524088 [2]广东省海洋遥感与信息技术工程技术研究中心,广东湛江524088

出　　处：《广东海洋大学学报》2017年第4期123-127,共5页Journal of Guangdong Ocean University

基　　金：国家海洋重大公益专项(201305019);广东省自然科学基金(2014A030313603);广东省科技计划项目(2013B030200002;2016A020222016);广东海洋大学创新强校项目(GDOU2014050226);广东省优青项目(YQ2014001)

摘　　要：于2016年9月18日至9月27日对湛江湾海域有色溶解有机物(CDOM)进行调查,分析CDOM的吸收系数ag(440)、光谱斜率(S_g)空间分布特征及其关系。结果表明:湛江湾海域CDOM的吸收系数ag(440)变化范围为0.23~0.71 m^(-1),平均值为0.49 m^(-1);S_g值的变化范围为0.005 2~0.019 7 nm^(-1),平均值为0.010 9 nm^(-1);ag(440)的水平空间分布表明,湛江湾外海CDOM浓度显著低于湾内水平,而光谱斜率S_g水平空间分布则显示湾内和湾外S_g差异性不明显,且ag(440)与S_g负相关关系不明显。The optical absorption properties of colored dissolved organic matter(CDOM)vary with itscomposition,which can be used as an indicator of water pollution.It is an important part of opticalproperties of coastal waters.We carried out a survey of CDOM in Zhanjiang Bay from September18thto27th,2016.We analyzed the spatial distribution characteristics and correlation between absorptioncoefficient(ag(440))and spectral slop(Sg)of CDOM.The results indicated that:the variation range ofabsorption coefficient of CDOM in Zhanjiang Bay waters is at0.23–0.71m-1with the average value at0.49m-1;and the variation range of Sg value is at0.0052–0.0197nm-1with average value at0.0109nm-1;The horizontal spatial distribution of ag(440)indicates that the concentration of CDOM in theoffshore area of Zhanjiang Bay is significantly lower than that in the bay,while Sg horizontal spatialdistribution indicates that the difference between exterior and inner bay is not apparent,and the negativecorrelation between ag(440)and Sg was very weak.

关 键 词：湛江湾 有色溶解有机物 吸收系数 光谱斜率 

分 类 号：X834[环境科学与工程—环境工程]