Prodigious plumes present provocative puzzle
Detailed Description
(Left) Multiple degassing sources in the crater and on the flanks of Pu‘u ‘Ō‘ō create a plume that fills the sky above Kīlauea Volcano's East Rift Zone eruption site on December 30, 2015. (Right) Kīlauea Volcano's summit lava lake within Halema‘uma‘u Crater discharges a particle-rich plume of noxious sulfur dioxide on December 9, 2015. USGS photos.