An ash plume rises above the surface of a pyroclastic flow descending the flanks of Pavlof on the Alaska Peninsula in 1975. Incandescent lava can be seen on the upper cone. Intermittent phreatomagmatic to magmatic eruptions began 13 September 1975 and continued until at least March 1977. Possible lava flows or lahars were reported in October 1975 and December 1976.

Photo by U.S. Geological Survey, 1975.

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

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

Keywords: ash plume | ash | plume | tephra | eruption | pyroclastic flow | pyroclastic density current (PDC) | explosive eruption

Pavlof