文献类型：期刊文献

中文题名：石油污染水体油浓度及后向散射系数垂向变化特性分析

英文题名：Vertical Variation Characteristics of Petroleum Concentration and Backscattering Coefficient in Petroleum-polluted Water Body

作者：邢旭峰[1];王忠林[1];黄妙芬[1];黄颖恩[1];庄炀[1]

机构：[1]广东海洋大学数学与计算机学院,广东湛江524088

年份：2020

卷号：40

期号：4

起止页码：75

中文期刊名：广东海洋大学学报

外文期刊名：Journal of Guangdong Ocean University

收录：CSTPCD

基金：国家自然科学基金项目(41771384);广东海洋大学2017年“创新强校工程”自主创新能力提升项目(GDOU2017052501);广东海洋大学科研启动经费资助项目(E16187)。

语种：中文

中文关键词：石油类物质浓度;悬浮物;后向散射系数;垂向变化;大连港

外文关键词：petroleum concentration;suspended particles;backscattering coefficient;vertical variation;Dalian port

中文摘要：【目的】探讨石油污染水体油浓度及后向散射系数垂向分布特性,为研究石油类污染水体水下光场变化奠定基础。【方法】于2018年8月25-27日在大连港采用站点固定、时间随潮汐变化的观测方式,测量不同深度的油物质和悬浮物浓度,以及含油水体的后向散射系数(backscattering coefficient, bb)。【结果】油浓度随深度的变化比较复杂,未呈现明显的逐渐下降或者逐渐升高的趋势;不同波段的bb随着深度的变化趋势是一致的;在量级上,bb值最小对应的波段是700 nm,其次是590 nm波段,最大是510、470、442和420 nm,且这4个波段的bb值差别不大;水体后向散射系数bb随深度的变化可以分为陡增型、平缓增加型和单峰型等三种类型。【结论】在含油水体中油浓度和后向散射系数的垂向变化受到潮汐的影响,处于不同涨落潮时不同来向的海水其组分含量不同;石油物质通过吸附在悬浮颗粒物表面形成一个双层结构,共同影响着水体的后向散射系数。

外文摘要：【Objective】The study lays a foundation for the study of underwater light field in petroleum-polluted water by grasping the vertical distribution characteristics of petroleum concentration and backscattering coefficient in petroleum-polluted water.【Method】August 25th to 27th,2018,in-situ data including petroleum concentration,suspended matter concentration and backscattering coefficient was adopted.The data were measured by using the mode that the station is fixed and the time changes with tide at Dalian port.【Result】The regime of vertical variation of petroleum concentration is complicated,and the concentration does not decrease or increase gradually with depth increasing.The minimum and second minimum of backscattering coefficient of each station are at 700 nm and 590 nm respectively.By the way,magnitude of backscattering coefficient is similar at 420 nm,442 nm,470 nm and 510 nm,and backscattering coefficients of these stations vary with depth consistently.There are three kinds of vertical variations of total backscattering coefficient in this study area,they are abrupt growth,steady growth and single hump.【Conclusion】The vertical variation of petroleum concentration and backscattering coefficient is mainly affected by tidal action due to the fact that ebb and flow of different time and stations could influence current in different way.In addition,the two-layer structure formed by the adsorption of petroleum substances on the surface of suspended particles affects the backscattering coefficient of water.