May 5, 2026 — Characterizing volcanic gas emissions during episode 46 of lava fountaining at Kīlauea summit
Detailed Description
A USGS Hawaiian Volcano Observatory volcanic gas specialist sets up a Fourier Transform Infrared spectrometer, or FTIR, near Kīlauea summit during episode 46 of lava fountaining on May 5, 2026. FTIR instruments detect incoming infrared (IR) radiation—the type of radiation associated with hot/warm objects having wavelengths slightly longer than the visible light we can see with our eyes. FTIR is used to characterize volcanic gas emissions during eruptions. USGS photo by M. Patrick.
Sources/Usage
Public Domain.