Volcano Watch: Many forms of sulfur are found on Kilauea Volcano

  • USGS photo by A. Lerner Continued degassing from fumaroles at fissures on Kilauea Volcano’s lower East Rift Zone produce native sulfur crystals when sulfur dioxide and hydrogen sulfide gases react and cool upon reaching the surface. The delicate sulfur crystals are 5-15 millimeters (0.2-0.6 inch) long.
  • USGS photo by A. Lerner Edge of the Kilauea vog plume near Waikoloa Village on the west side of Hawaii Island on June 23 as it is blown by trade winds across the island and toward the Pacific Ocean. For more information about sulfur dioxide emissions and vog, visit https://vog.ivhhn.org.

For many Hawaii residents, interactions with Kilauea Volcano’s eruptions is through vog — a hazy mixture of sulfur dioxide gas and sulfate particles. However, sulfur on Kilauea is not limited to vog components.