부산대학교 도서관

Crude oil and its emulsions seriously threaten marine ecological environment and human health. Thermal infrared remote sensing technology is an important means of optical remote sensing marine oil-spill monitoring. In this paper, based on the UAV thermal infrared radiometer, a 24-hour continuous oil-spill brightness temperature image acquisition experiment was carried out, and oil-spill BTD polar coordinate thermal model was constructed to analyze the thermal infrared response characteristics of crude oil and emulsified oil. The results show that the thermal infrared response characteristics of oil-in-water (OW) emulsified oil and seawater are difficult to distinguish, which of crude oil and water-in-oil (WO) emulsion are similar. During 11:00~14:00, there is strong thermal infrared separability between oil and seawater, and the BTD values of crude oil and WO emulsified oil are both greater than 15. During 10:30~15:00, there is a strong positive correlation between BTD and oil film thickness, R 2 is greater than 0.9, so it is determined that the optimal time window for oil-spill thermal infrared monitoring is 11:00~14:00. The thermal infrared remote sensing monitoring based on oil-spill BTD model and optimal time window is expected to provide new technical and method support for marine oil-spill emergencies.