Snowpack on the western flank of Tokachi preserves individual layers of pyroclastic surge and pyroclastic flow deposits from the 1988-89 eruption. Because the eruptions took place during the winter, snowfall proved very useful to scientists in distinguishing the deposits of small-scale eruptions that lasted only a very short time.

Photo by Mario Yoshida, 1989 (Hokkaido University).

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

Galleries: Fieldwork

Keywords: ash | deposit | ashfall | tephra | field work | volcanologist | stratigraphy

Tokachidake