This photo shows an ash plume during the eruption of Spurr on 18 August 1992. A lighter plume rises above pyroclastic flows descending the SE flank to the right, and the summit lava dome complex is to the left. The 18 August event was the second of three brief powerful explosive eruptions in 1992.

Photo by Game McGimsey, 1992 (Alaska Volcano Observatory, U.S. Geological Survey).

This image is made available as a Public Domain Work, but proper attribution is appreciated.

Galleries: Ash Plumes and Ashfall | Explosive Eruptions | Pyroclastic Flows

Keywords: ash plume | ash | plume | eruption | explosive eruption | pyroclastic flow | wind dispersal | umbrella cloud

Spurr