Multi-remote sensing of spilled oils from A Symphony tanker collision in the Yellow Sea
Oil spill is one of the critical target of marine environmental monitoring.Synthetic Aperture Radar(SAR),thermal infrared remote sensing,and optical remote sensing for monitoring of marine oil spills have been elucidated,and it is crucial for marine environmental protection to utilize the features and advantages of multi-source remote sensing to achieve accurate monitoring and quantitative assessment of marine oil spills.On April 27,2021,the collision between the Panamanian vessel Sea Justice and the Liberian oil tanker A Symphony resulted in an estimated 9400 t of cargo oil seeping into the yellow sea.Here,we used multi-source satellite remote sensing data to monitor and analyze the coverage of oil spill and the distribution of emulsified oil in this accident.Based on the response mechanism and characteristics of oil spill multi-source remote sensing,the processing of multi-source data is optimized to realize the identification of oil spills and the classification of multiple oil types.The findings indicate that from May 1 to May 22,2021,the cumulative pixel area of oil spills from A Symphony tanker was 2 368.7 km2,of which the emulsified oil pixel area was 1 019.3 km2,accounting for 43.0%.The maximum daily oil spill pixel area reached 734 km2.The results of multi-remote sensing monitoring validated each other,and optical re-mote sensing is more capable of identifying different oil types,in which the emulsified oil represents the key of pol-lution hazards.It improves the accuracy of monitoring and assessment of marine oil spills,and provides reliable technical and methodological references for the hazard assessment and refined monitoring of oil pollution events.
NETL
NSTL
万方数据
