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Kutcharo Volcano | John Seach
Hokkaido, Japan
43.55 N, 144.43 E
summit elevation 1000 m
Caldera
Kutcharo caldera is 26 x 20 km in diameter.
Kutcharo-ko is a permanent freshwater lake in the caldera.
The lake is the northenmost brackish lake along Sea of Okhotsk.
Every autumn about 20,000 Bewick swans migrate to the lake.
Further Reading
Yamasaki, T., Kobayashi, T., Wright, T.J. and Fukahata, Y., 2018. Viscoelastic crustal deformation by magmatic intrusion: a case study in the Kutcharo caldera, eastern Hokkaido, Japan. Journal of Volcanology and Geothermal Research, 349, pp.128-145.
Hasegawa, T., Matsumoto, A. and Nakagawa, M., 2016. Evolution of the 120 ka caldera-forming eruption of Kutcharo volcano, eastern Hokkaido, Japan: Geologic and petrologic evidence for multiple vent systems and rapid generation of pyroclastic flow. Journal of Volcanology and Geothermal Research, 321, pp.58-72.
Kutcharo Volcano Eruptions
No historical eruptions are known at the volcano, but the last eruption may have been 1000 years ago.