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海洋溢油模拟目标的紫外反射特性研究

Research on the Ultraviolet Reflectivity Characteristic of Simulative

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摘要

海洋溢油是一种破坏性极大的海洋污染物, 对它的监测一直是海洋遥感的重要内容之一, 通过反射率强弱来区分溢油区域和未污染海面即为常用的方法。 文章针对海洋溢油的紫外反射特性展开研究, 并建立了相应的光谱测量实验系统, 选择合适的实验条件和环境后对海洋溢油的4种模拟目标(汽油、 煤油、 柴油、 润滑油)的紫外波段反射光谱进行了测试。 通过对实验数据的处理和分析, 得到这4种模拟目标在紫外波段的反射特性, 并和同样实验环境下测得的水反射特性进行了对比。 实验结果表明, 油膜在紫外波段的反射率和水存在较为明显的差异, 差异值主要由油种和油膜厚度所决定。 该实验方法同样适用于真实溢油目标, 这为今后利用紫外波段对海洋溢油进行遥感监测积累了一定的理论和实验基础。Targets of Oil Spill on the Ocean

Abstract

The authors set up an experiment instrument to measure the ultraviolet(UV) characteristic of oil spill simulation targets for the marine oil spill.After selecting appropriate conditions for experiments, the authors tested UVreflective spectrum of four simulation targets for oil spill (gasoline, kerosene,diesel fuel, lubricating oil). The authors calculated the UV absolute spectrumreflectivity of all testing targets from the standard white board as reference,whose UV reflectivity was given. With processing and analyzing the data fromexperiments, the authors got the reflective characteristics of them in contrastto the reflectivity of water, which was measured in the same conditions. Alltargets were tested from 320 to 400 nm, and UV reflectivity wave-band between 360and 380 nm was representative. Testing data were shown as follows: (1) Thereflectivity of water was from 5.3% to 5.5%. (2) When the thickness of oil filmwas 400 μm, the reflectivity of gasoline was from 8.5% to 8.8%, 5.4%-5.8% forkerosene, 8.3%-8.4% for diesel fuel, and 9.4%-9.7% for lubricating oil in thesame wave-band between 360 and 380 nm. Correspondingly, the indeterminacy ofreflectivity was 0.32%, 0.45%, 0.25%, and 0.33% respectively. (3) Hence thethickness of oil film changed, the rule of the UV reflectivity varied dependingon the sort of oil spill. The results show that there were some obviousreflectivity differences among oil films and water, which were mainly determinedby the sort and thickness of oil film. This experiment method is also fit for theactual oil spill target, and it will fulfill some theory and experimentalfoundation for inspecting the marine oil spill by UV remote sensing in thefuture.targets(40776100)资助

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中图分类号:TB96

基金项目:中国科学院三期知识创新工程青年人才领域前沿项目及国家自然科学基金项目

收稿日期:2009-02-02

修改稿日期:2009-05-06

网络出版日期:0001-01-01

作者单位    点击查看

方四安:中国科学院上海技术物理研究所, 上海 200083中国科学院研究生院, 北京
黄小仙:中国科学院上海技术物理研究所, 上海 200083
尹达一:中国科学院上海技术物理研究所, 上海 200083
徐冲:中国科学院上海技术物理研究所, 上海 200083中国科学院研究生院, 北京
冯鑫:中国科学院上海技术物理研究所, 上海 200083
冯旗:中国科学院上海技术物理研究所, 上海 200083

联系人作者:方四安(fsa2002@mail.ustc.edu.cn)

备注:方四安, 1984年生, 中国科学院研究生院2006级硕士研究生

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