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Measurement of Mount Etna plume by CO2-laser-based lidar

机译:基于CO2激光的激光雷达对埃特纳火山羽流的测量

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The CO2 laser-based agile tuner lidar for atmospheric sensing has been used to profile the volcanic plume ofnMount Etna during its most recent eruption. Owing to the transmitted wavelength, this system is practi-ncally insensitive to air molecules while it detects aerosol loads, and thus the path attenuation of the lasernbeam is strongly affected by volcanic particulate. Vertical profiles of extinction coefficient were retrieved upnto an altitude above ground level of 5000 m. The observed extinction coefficient ranges from 10−5 to 5nu000110−4 m−1. The lidar was able to accurately track the spatiotemporal evolution of the volcanic plume thanksnto a spatial resolution of 15 m and a temporal resolution of 1 min. © 2009 Optical Society of American.
机译:用于大气感应的基于CO2激光的敏捷调谐器激光雷达已用于在最近喷发期间喷出nMount Etna的火山羽流。由于发射的波长,该系统在检测气溶胶负荷时实际上对空气分子不敏感,因此激光束的路径衰减受到火山颗粒的强烈影响。在海拔5000 m以上的海拔高度上,获取了消光系数的垂直剖面。观测到的消光系数范围为10-5到5nu000110-4 m-1。由于空间分辨率为15 m,时间分辨率为1 min,激光雷达能够准确地跟踪火山羽的时空演化。 ©2009美国眼镜学会。

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