Measuring Halemaʻumaʻu crater eruption gas emissions - June 9, 2023

Hawaiian Volcano Observatory scientists use an FTIR to measure volcanic gas at the Halemaʻumaʻu crater eruption site. The FTIR is aimed at the hot, glowing lava and the volcanic gas between the lava and the FTIR can be measured. The data is processed to calculate important gas ratios which can give us information about how magma and volatiles are transported in the volcanic plumbing system. For more information on FTIR, see: Volcano Watch — Infrared (IR) measurements help HVO scientists unravel Kīlauea’s gas chemistry | U.S. Geological Survey (usgs.gov).