Global Volcanism Program | Image GVP-02203

An ash plume rises above Usu on the afternoon of 7 August 1977, the first day of an eruption that lasted until 1982. Nine major explosive eruptions during 7-14 August 1977 were followed by slow growth of the Usu-Shinzan cryptodome. A crypotodome is a lava dome that uplifts the ground without breaking through to the surface. Photo by T. Kobayashi, 1977 (courtesy Tokiko Tiba).

An ash plume rises above Usu on the afternoon of 7 August 1977, the first day of an eruption that lasted until 1982. Nine major explosive eruptions during 7-14 August 1977 were followed by slow growth of the Usu-Shinzan cryptodome. A crypotodome is a lava dome that uplifts the ground without breaking through to the surface.

Photo by T. Kobayashi, 1977 (courtesy Tokiko Tiba).

Creative Commons Icon This image is made available under the Creative Commons BY-NC 4.0 license terms.

Galleries: Explosive Eruptions | Ash Plumes and Ashfall

Toya