HVO’s geochemist uses a Fourier Transform Infrared Spectrometer (FTIR) instrument to track volcanic gases emitted from the lava lake with HalemaÊ»umaÊ»u Crater. These measurements help detect changes in gas composition, which can provide insight into the inner workings of KÄ«lauea Volcano. Photo taken Sunday, February 12, 2017 courtesy of USGS/HVO
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