Viewed from the SSE.
|Elevation||733 m (2,405 ft) |
|Parent range||Nasu Volcanic Zone|
|Topo map||Geographical Survey Institute 25000:1 壮瞥, 50000:1 虻田|
|Volcanic arc/belt||Northeast Japan Arc|
|Last eruption||March to September 2001|
Mount Usu (有珠山 Usu-zan) is an active stratovolcano in the Shikotsu-Toya National Park, Hokkaidō, Japan. It has erupted four times since 1900: in 1910 (which created Meiji-shinzan), 1944–45 (which created Shōwa-shinzan), August 7, 1977, and on March 31, 2000. To the north lies Lake Toya. Mount Usu formed on the southern rim of the caldera containing the lake.
Mount Usu and Shōwa-shinzan are major tourist attractions in the Shikotsu-Toya National Park. A ropeway on Mount Usu takes visitors to viewing platforms overlooking Shōwa-shinzan. The 1977 eruption is mentioned in passing in Alan Booth's travelogue, The Roads to Sata. The 2008 G8 Summit was held near Mount Usu at Lake Toya.
- Geographical Survey Institute topographic map 壮瞥, last access 28 May 2008
- Teikoku's Complete Atlas of Japan, Teikoku-Shoin Co., Ltd., ISBN 4-8071-0004-1
- 神沼克伊,小山悦郎 日本の火山を科学する 日本列島津々浦々、あなたの身近にある108の活火山とは？ ソフトバンククリエイティブ 2011. ISBN 978-4797361308.
- , last access 28 October 2010
- Japan's Selects Hokkaido for 2008 Summit, last access 28 May 2008
|Wikimedia Commons has media related to Mount Usu.|
- Usuzan - Japan Meteorological Agency (in Japanese)
- "Usuzan: National catalogue of the active volcanoes in Japan" (PDF). - Japan Meteorological Agency
- Usu Volcano - Geological Survey of Japan
- Toya - Smithsonian Institution: Global Volcanism Program
- Toya caldera and Usu volcano Global Geopark
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