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The remote sensing inversion theory of offshore oil slick thickness based on a two-beam interference model

Science China Earth Sciences 2011年第5期54卷 678-685页

作者： LU YingCheng TIAN QingJiu LI Xiang International Institute for Earth System Science Nanjing University Nanjing 210093 China College of Electronic Science andEngineering Nanjing University Nanjing 210093 China

Offshore oil slicks are significant for both the monitoring of marine spill accidents and the detection of marine oil *** use of remote sensing technology to detect the thickness of oil slicks is a major area of *** reflected light from oil slicks changes with the thickness of the *** is the theoretical basis of research on optical remote sensing of offshore oil slicks.A two-beam interference model that considers the offshore oil slick as a flat plate has been developed in this study.A quantitative remote sensing model which describes a series of processes that use oil slick thickness and reflectance as variables is *** use of the Fresnel equation to analyze parameters in the model indicated that the key property of the quantitative relationship between the oil slick thickness and reflectance was ultimately the disappearance or extinction of the oil *** model has been tested and verified by data from offshore oil slick spectral response *** showed that the oil slick thickness remote sensing model can be theoretically analyzed and is *** research indicated that the major cause of variations in the spectral response as a function of oil slick thickness was the different light-scattering *** characteristics can be used in remote sensing applications to identify the different types of offshore oil *** theoretical interpretation of each parameter in this model led to the development of a look-up table of the model parameters which will improve the efficiency of future offshore oil slick remote sensing.

关键词： two-beam interference oil slick thickness remote sensing reflectance

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Determining oil slick thickness using hyperspectral remote sensing in the Bohai Sea of China

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International Journal of Digital Earth 2013年第1期6卷 76-93页

作者： Yingcheng Lu Qingjiu Tian Xinyuan Wang Guang Zheng Xiang Li International Institute for Earth System Science Nanjing UniversityNanjingChina Center for Earth Observation and Digital Earth Chinese Academy of ScienceBeijingChina College of Electronic Science and Engineering Nanjing UniversityNanjingChina

Determining oil slick thickness plays an important role in assessing oil spill volume and its environmental impacts on the *** this study,we used a Hyperion image of an oil spill accident area and seawater and fresh crude oil samples collected in the Bohai Sea of China.A well-controlled laboratory experiment was designed to simulate spectral responses to different oil slick *** resampling and normalization methods were used to reduce the differences in spectral reflectances between the experimental background seawater sample and real background *** the analysis with laboratory experimental data results showed a linear relationship between normalized oil slick reflectance and normalized oil slick thickness[20th band(R^(2)-0.92938,n=49,pB0.01),26th band(R^(2)=0.93806,n=49,pB0.01),29th band(R^(2)=0.93288,n=49,pB0.01)].By using these statistical models,we successfully determined the normalized oil slick thickness with the Hyperion *** results indicate that hyperspectral remote sensing technology is an effective method to monitor oil spills on *** spectral ranges of visible green and red light were the optimal bands for estimating oil slick thickness in case 2 *** high,stabilized spectral reflectance of background seawater will be helpful in oil slick thickness inversion.

关键词： hyperspectral optical remote sensing reflectance oil slick thickness oil spill

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