For the first time, we monitored the Elbrus volcano activity detecting volcanic gases emanating through pores using an unique eye-safe LIDAR system. A highly sensitive eye-safe LIDAR system was developed for monitoring the fracture-emitted aerosol, which is transported by volcanic gases inside a hot tunnel near the Elbrus Mountain. The developed LIDAR is based on a diode laser (transmitter, 910 nm, 3 ns, <1 µ J cm −2 ) and a single-photon avalanche photodiode (detector). From August to October 2019, within the first months of the LIDAR monitoring, we have detected a two-fold decrease in the fracture-emitted aerosol emanation, while other parameters in the tunnel remained relatively stable (radon concentration, air temperature and humidity changed less than by 1%). A significant correlation between the LIDAR signal of volcanic aerosol and the Earth’s crust deformation measured by the laser strainmeter located nearby was found. Based on our preliminary experiment...

中文翻译：

---

通过基于二极管激光器的独特LIDAR监测火山活动

我们首次使用独特的人眼安全激光雷达系统监测Elbrus火山活动，检测通过孔散发出的火山气体。开发了一种高度灵敏的人眼安全激光雷达系统，用于监测裂缝产生的气溶胶，该气溶胶是由Elbrus山附近的热隧道内的火山气体输送的。研发的激光雷达基于二极管激光器（发射器，910 nm，3 ns，<1 µ J cm -2）和单光子雪崩光电二极管（检测器）。从2019年8月到2019年10月，在LIDAR监测的头几个月内，我们检测到裂缝产生的气溶胶释放量减少了两倍，而隧道中的其他参数保持相对稳定（rad浓度，空气温度和湿度变化较小比1％）。发现附近的激光应变仪测量的火山气溶胶的LIDAR信号与地壳变形之间存在显着相关性。根据我们的初步实验...