Application of spectroscopy in remote sensing of volcanic gases

2014 Fiscal Year Final Research Report

• Project/Area Number: 24540446
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Hokkaido University
• Principal Investigator: HASHIMOTO Takeshi 北海道大学, 理学(系)研究科(研究院), 准教授 (70283588)
• Co-Investigator(Kenkyū-buntansha): TERADA Akihiko 東京工業大学, 火山流体研究センター, 講師 (00374215)
• Co-Investigator(Renkei-kenkyūsha): MORI Toshiya 東京大学, 大学院理学系研究科, 准教授 (40272463) ; NAKAMURA Takuji 国立極地研究所, 教授 (40217857) ; EJIRI Mitsumu 国立極地研究所, 助教 (80391077) ; ABO Makoto 首都大学東京, システムデザイン学部, 教授 (20167951)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 火山ガス / リモートセンシング / 分光

Outline of Final Research Achievements

It has generally been believed that remote-sensing of water (vapor and mist) in volcanic plume is practically very difficult. This research aimed to visualize water content in volcanic plumes as an infrared image via absorption of background solar radiation through the water. Unfortunately this method was proven to be unsuccessful at least in the humid atmospheric conditions in our nation. We, however, improved our low-cost imager of sulfur dioxide gas in volcanic plumes using ultraviolet wavebands. In addition, we made it possible to remotely detect water vapor and water mist separately by using our portable Raman LIDAR system.

Free Research Field

火山物理学