文献类型：期刊文献

中文题名：水中油对水体下行漫衰减系数的影响

英文题名：Influence of Dispersed Oil on Diffuse Attenuation Coefficient of Downwelling Irradiance

作者：杨俊杰[1];黄妙芬[2];邢旭峰[2];王忠林[2]

机构：[1]广东海洋大学电子与信息工程学院,广东湛江524088;[2]广东海洋大学数学与计算机学院,广东湛江524088

年份：2023

卷号：60

期号：9

起止页码：109

中文期刊名：激光与光电子学进展

外文期刊名：Laser & Optoelectronics Progress

收录：CSTPCD、、ESCI(收录号：WOS:000996091200007)、Scopus、CSCD2023_2024、WOS、北大核心、CSCD、北大核心2020

基金：国家自然科学基金(41771384)。

语种：中文

中文关键词：海洋光学;下行漫衰减系数;半分析模型;大连港;Hydrolight

外文关键词：oceanic optics;diffuse attenuation coefficient of downwelling irradiance;semianalytical model;Dalian port;Hydrolight

中文摘要：下行漫衰减系数(kd)是海洋光学领域的重要光学参数之一。利用大连港现场实测的含水中油水体光学参数和辐射传输模型Hydrolight模拟含水中油水体水下光场,分析水中油对水体kd的影响,并根据模拟结果构建kd半分析模型。结果表明,在可见光波段,不同水深的kd光谱随着水中油浓度的增加而升高;随着水中油浓度的增加,kd随水深增加而升高的趋势更为明显,且接近其定常渐进值的速度越快;含水中油水体吸收系数及后向散射系数对kd的贡献与自然水体不同,使得含水中油水体与自然水体kd半分析模型的参数值差异明显,因此,自然水体kd半分析模型无法满足含水中油水体的精确计算需求。通过模拟结果构建的kd半分析模型可以进一步计算得到精度较高的下行辐照度,为快速模拟含水中油水体水下光场提供了可靠的解决方案。

外文摘要：The diffuse attenuation coefficient of downwelling irradiance(kd)is one of the most critical optical parameters in oceanic optics.The optical parameters of waters around the Dalian port polluted by dispersed oil(oil in water)were measured,and the underwater light field was simulated using the radiative transfer model(Hydrolight)to analyze the influence of oil in water on kd and to establish a semianalytical model for kd.The simulation results show that the kd spectra of various water depths increase with increasing oil concentrations.Moreover,kd increases with increasing depth,particularly for the waters containing high concentrations of dispersed oil,and the faster it approaches its steady asymptotic value.In addition,this study also shows that the contributions of the absorption coefficient(a)and backscattering coefficient(bb)to kd of water polluted by dispersed oil differ from those of a and bb to kd of natural water body,so that the parameter values of the kd semianalytical models of water polluted by dispersed oil and natural water body are significantly different.Therefore,the existing kd semianalytical model for natural water body is unsuitable for accurate calculations of kd of water polluted by dispersed oil.Hence,a semianalytical model of kd was developed based on the simulation results of Hydrolight.The accurate downwelling irradiance can be further calculated using kd obtained with this developed semianalytical model to provide a rapid and reliable solution for the underwater light field simulation of waters polluted by dispersed oil.