论文部分内容阅读
溢油海水双向反射分布函数(BRDF)研究可为海水表面油膜及海水中溢油乳浊液检测提供理论基础,对保护海洋周边环境及海洋生态平衡具有重要的意义.本文基于蒙特卡罗方法及Mie散射理论建立了溢油海水模型,针对532 nm及355 nm激光研究了无溢油海水、漂浮油膜海水及乳浊液海水情况下海水的BRDF,并给出不同油膜厚度及溢油浓度下海水的BRDF.结果表明双向反射分布函数对水体的污染程度十分敏感,相同观测角下,溢油海水BRDF值明显小于无溢油海水BRDF值,海水的BRDF值随油膜厚度及溢油浓度的增加而减小.海水的BRDF值可作为海水是否发生溢油污染及污染程度判断依据之一.
The BRDF study can provide a theoretical basis for the detection of oil spill on sea water surface and seawater and is of great significance for the protection of the marine environment and marine ecological balance.Based on the Monte Carlo method and Mie scattering theory, an oil spill seawater model was established. The BRDF of seawater without oil spill, floating oil film seawater and emulsion seawater were studied for 532 nm and 355 nm lasers. The seawater with different oil film thickness and oil spill concentration The results show that the birefringence distribution function is very sensitive to the pollution degree of water body. Under the same observation angle, the BRDF value of oil spilled seawater is obviously lower than that of BRDF without oil spill. The BRDF value of seawater increases with the increase of oil film thickness and oil spill concentration Decrease.The BRDF value of seawater can be used as one of the bases for judging whether there is oil spill pollution and pollution degree in seawater.