Remote sensing for the volcanic fluid by use of back scattering Raman light

利用背散射拉曼光遥感火山流体

• 批准号: 23656565
• 负责人: OHBA Takeshi
• 金额: $ 2.66万
• 依托单位: Tokai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23656565/
• 关键词: ラマン光; 火山; 流体; 火口湖; リモートセンシング; 遠隔観測; 水蒸気爆発; レーザー; 火山活動

We carried out a basic experiment by which the acidity of natural water such as the lake water in active volcanoes. For the exciting light, 532nm 0.6W laser was employed. For the detection of Raman light, a monochrometer and a photomultiplier were used. In a laboratory, water solutions with various acidities were excited by the laser and the back scattering Raman light was observed with the distance of 30 cm. The characteristic Raman light originating in the vibration of H2O molecules were detected at 642 and 650 nm of wave length for the peak in spectra. The relative height of those peaks was correlated to the acidity of solution, implying the possibility of remote sensing of water acidity based on the Raman light observation.

我们进行了一个基本的实验，通过该实验，天然水的酸度，例如活跃火山中的湖水。 对于令人兴奋的光，使用了532nm 0.6W激光。 为了检测拉曼光，使用了单色计和光电倍增剂。 在实验室中，激光激发了各种酸度的水溶液，并且在30 cm的距离时观察到背部散射拉曼光。 对于光谱中的峰值，在642和650 nm的波长下检测到起源于H2O分子振动的特征性拉曼光。 这些峰的相对高度与溶液的酸度相关，这意味着基于拉曼光观察的水酸度遥感的可能性。