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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Development of a drone-borne volcanic plume sampler
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Development of a drone-borne volcanic plume sampler

机译：开发无人驾驶火山羽流采样器

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Both chemical and isotopic compositions of volcanic plumes are highly useful in evaluating the present status of active volcanoes. Monitoring their temporal changes can facilitate the forecasts of volcanic activity as well. In the present study, we developed a drone-borne automatic sampler for volcanic plumes in which an output signal from a sulfur dioxide (SO2) sensor triggered a pump to collect samples when its SO2 concentration exceeded a predefined threshold. First, we tested the automatic sampler while holding the device by hand at Iwo-yama volcano, Kirishima volcanic complex,Japan, where the fumaroles were accessible. Second, we fitted the sampler on a drone at Nakadake central cone, Aso volcano, Japan, where only the crater rim was accessible. In both sampling campaigns, good consistency in isotope ratios (H-2/H-1) of molecular hydrogen (H-2) between samples collected by the automatic sampler and those collected directly into pre-evacuated flasks was obtained. Furthermore, by using the drone-borne sampler at Aso volcano, we obtained plume samples with higher concentrations of H-2 and carbon dioxide than those taken directly into flasks at the crater rim. Our sampler can be utilized to collect volcanic plume samples for the determination of stable isotopic compositions in general by subsequent laboratory analysis and the remote establishment of fumarole outlet temperature based on the H-2/H-1 ratios of hydrogen, including their temporal changes. (C) 2021 Elsevier B.V. All rights reserved.
机译：Volcanic羽毛的化学和同位素组合物在评估活性火山的现状中非常有用。监测他们的时间变化可以促进火山活动的预测。在本研究中，我们开发了一种用于火山羽毛的无人机自动采样器，其中来自二氧化硫（SO2）传感器的输出信号触发泵，以在其SO2浓度超过预定阈值时收集样品。首先，我们通过手工在Iwo-yama火山，Kirishima火山复合物，日本举行的设备上握住了自动取样器，在那里，富马尔斯可访问。其次，我们在纳克萨克中央圆锥，日本秋天火山的无人机上安装了普通犬，只有火山口轮辋。在取样运动中，通过自动取样器收集的样品之间的分子氢（H-2 / H-1）的同位素比（H-2 / H-1）的良好一致性得到，得到直接收集到预先抽出的烧瓶中的样品之间的分子氢（H-2 / H-1）。此外，通过在ASO火山上使用无人机传播的采样器，我们获得了浓度高浓度的H-2和二氧化碳的羽流样品，而不是直接进入火山口轮上的烧瓶中的二氧化碳。我们的采样器可用于收集Volcanic Plume样品，用于测定稳定的同位素组合物，通过随后的实验室分析和基于氢气的H-2 / H-1比率的富马拉出口温度的远程建立，包括它们的时间变化。 （c）2021 Elsevier B.v.保留所有权利。

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