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 courtesy of Japan Meteorological Agency, 1988.

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

Keywords: ash | deposit | ashfall | tephra

Tokachidake