Analyses of in‐situ airborne volcanic ash from the February 2000 eruption of Hekla Volcano, Iceland
Analyses of in‐situ airborne volcanic ash from the February 2000 eruption of Hekla Volcano, Iceland
复制标题
对 2000 年 2 月冰岛赫克拉火山喷发产生的现场空气火山灰进行分析
DOI：
10.1029/2001gl013688
复制
发表时间：
2002
影响因子：
5.2
通讯作者：
C. Grove
中科院分区：
文献类型：
--
作者：
D. Pieri;Chi Ma;J. Simpson;G. Hufford;T. Grindle;C. Grove
2000年2月26日，美国国家航空航天局（NASA）一架麦克唐纳-道格拉斯DC - 8研究飞机无意中撞上了Hekla火山喷发产生的空中火山灰羽流。使用扫描电镜、能量色散x射线光谱仪和尼科莱FTIR分光光度计分析，将飞机上的过滤器样品与“正常使用”和“原始清洁”过滤器进行比较。这些分析证实，DC - 8遇到了来自Hekla火山的空气火山灰。这一结果得到了独立的机载加热气溶胶观测结果的支持。分析进一步表明，从航空安全的角度来看，双波段热红外（“分裂窗口”）方法用于探测火山灰的模糊性。他们还强调了基于飞机过滤器的火山气溶胶原位观测在科学目的中的实用性。
A McDonnell‐Douglas DC‐8 NASA research aircraft inadvertently flew into an airborne volcanic ash plume from the 26 February 2000 eruption of Hekla Volcano. Filter samples from the aircraft were compared with “normal use” and “pristine clean” filters using SEM, energy‐dispersive x‐ray spectrometer, and Nicolet FTIR spectrophotometer analyses. These analyses confirm that the DC‐8 encountered airborne volcanic ash from Hekla Volcano. This result is supported by independent onboard heated aerosol observations at the time of the encounter. The analyses further demonstrate the ambiguous nature of the dual band thermal IR (“split window”) method for detecting volcanic ash from the point of view of aviation safety. They also highlight the utility of in situ aircraft filter‐based observations of volcanic aerosols for scientific purposes.