海面溢油的可见光波段地物光谱特征研究

The Research of Visual Light Wave-band Feature Spectrum of Sea-surface Oil Spill

通过对试验获得的原油、柴油和润滑油的可见光近红外波段地物光谱特征曲线进行处理、对比、分析 ,揭示和总结了 3种油随厚度变化的光谱特征、油水反差规律及吸收特征参数 :3种油反射总体趋势是柴油随厚度增加而增大 ,润滑油和原油随厚度增加而减小。柴油的反射率远高于海水 ,润滑油在蓝绿光波段反射率高于海水 ,而原油与海水反差在蓝绿光波段最低等 ,可为识别油膜厚度、区分油膜与海水和鉴别油种提供帮助 。

The paper contrasts and analyzes the visual light and near infrared\|ray wave band spectrum feature curves of crude oil,diesel oil and lubricate oil,which are obtained through the experiments,and shows their spectrum features varying with the thickness,oil\|water contrast rule and absorption feature parameters.With the increase of the thickness,the reflection rate of diesel oil generally tends to increase,while that of lubricate and curde oil decreases.The reflection rate of diesel oil is much higher than that of sea water,while that of lubricate oil is higher than that of sea water in the blue\|green band.The contrast of the curde oil and water is the lowest in the blue\|green wave band.It can help to determine oil film thickness,discriminate oil film and sea water,and identify oil types,so that it may be available to monitor sea oil spilling through satellite remote sensing method.