Assessment of the potential impact of eruption materials from active volcanoes in China on aviation safety
Volcanic activity can have a significant impact on aviation safety.The volcanic ash produced by explosive volcanic eruptions can damage the thermal barrier coatings of aircraft engines through physical abrasion and chemical corrosion,thereby reducing their service life and affecting flight safety.There are several active volcanoes in China,notably Changbaishan,Wudalianchi,and the Tengchong volcanic areas.The data of geophysical and hydrothermal activities indicate the potential eruptions in the future.As the aviation transport industiy becomes increasingly significant in China's economy,eruptions from these volcanoes could have profound impacts on flight safety within China's airspace.Thus,assessing the potential impact of these volcanoes on aviation safety is of great practical significance.This paper utilizes 2275 sets of geochemical data collected and analyzed,applying a silicate melt viscosity model to determine the viscosities of volcanic materials at different periods for various volcanic regions at the minimum operating temperature of 1200℃ in jet engine combustion chambers.It assesses the potential impact on aviation safety from volcanoes in Changbaishan,Wudalianchi,Jingpohu,Longgang,Shuangliao,Tengchong,and the Circum-Pacific regions.The results show that the contents of trace elements Co,V,Ni,and Cr are negatively correlated with the silicate viscosities,while Rb content is positively correlated.The viscosities of the volcanic regions(including Changbaishan,Wudalianchi,Jingpohu,Longgang and Shuangliao)in Northeast China and the Tengchong volcanic region in Southwest China have shown a significant decreasing trend from 0.52Ma and 1.05Ma,respectively.The viscosities in the Circum-Pacific volcanic region fluctuate periodically within the range of 100.70～105.90 Pa·s,typically showing a fluctuating downward trend since 18 Ma.The decrease in viscosity implies that the volcanic materials,once ingested by jet engines,are more likely to spread and increase the contact area with the thermal barrier coating,thus enhancing the potential for damage.This suggests that volcanic activities in Northeast China,Southwest China and the Circum-Pacific regions pose an increasing threat to aviation safety.This paper provides qualitative comparative parameters for assessing the impact of volcanic material of different ages and regions on aviation safety and also offers reference data from China's volcanic regions for international aviation safety decision-making.
万方数据
维普
