Mount Usu

Mount Usu (有珠山, Usu-zan[2]) is an active stratovolcano in the Shikotsu-Toya National Park, Hokkaido, Japan. It has erupted four times since 1900: in 1910 (which created Meiji-shinzan[3]), 1944–45 (which created Shōwa-shinzan), August 7, 1977,[4] and on March 31, 2001. To the north lies Lake Tōya. Mount Usu formed on the southern rim of the caldera containing the lake.

Mount Usu
有珠山 Usu-zan
Viewed from the SSE.
Highest point
Elevation733 m (2,405 ft) [1]
Coordinates42.541°N 140.843°E / 42.541; 140.843 
Geography
Mount Usu
Parent rangeNasu Volcanic Zone
Topo mapGeographical Survey Institute 25,000:1 壮瞥, 50,000:1 虻田
Geology
Mountain typeStratovolcano
Volcanic arc/beltNortheast Japan Arc
Last eruptionMarch to September 2001

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 Tōya.[5]

  • Tōya caldera &
    Mount Usu (bottom)
  • Mount Usu
  • Tōya caldera & Usu volcano
  • Mountaintop Crater
  • East side

See also

References
  1. Geographical Survey Institute topographic map 壮瞥, last access 28 May 2008
  2. Teikoku's Complete Atlas of Japan, Teikoku-Shoin Co., Ltd., ISBN 4-8071-0004-1
  3. 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.
  4. "The 1977–78 Eruptions at the Mountain Peak and Ground Deformation". Archived from the original on 2010-10-12. Retrieved 2010-10-28. Last access 28 October 2010.
  5. Japan's Selects Hokkaido for 2008 Summit, last access 28 May 2008


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