Scientists use a FTIR spectrometer

Color photograph of scientists making measurements

Detailed Description

On the morning of Dec. 21, Hawaiian Volcano Observatory gas scientists use a FTIR spectrometer on the rim of Halema‘uma‘u crater. The FTIR measures the composition of the gases being emitted during KÄ«lauea Volcano's ongoing summit eruption by measuring how the plume absorbs infrared energy. The plume being generated by the ongoing eruption is sulfur-dioxide (SO2) rich, but also contains water vapor, carbon dioxide, and halogen gases such as HCl and HF. USGS photo by T. Elias.


Image Dimensions: 4032 x 3024

Date Taken:

Location Taken: US