Volcano Watch: Infrared measurements help HVO scientists unravel Kilauea’s gas chemistry

  • USGS photo by P. Nadeau An HVO scientist aims the ‘field FTIR’ at spattering lava from the current eruption in Halema‘uma‘u crater, at Kilauea summit, on Oct. 4.

Most people in Hawaii know about sulfur dioxide (SO2) gas, the major component of vog. But, have you ever found yourself wanting to know the SO2/HCl (sulfur dioxide/hydrogen chloride) ratio in volcanic gas? Or the amount of CO2 (carbon dioxide) dissolved in volcanic glass?