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Japan · Stratovolcano

Mount Kusatsu-Shirane

Kusatsu-Shiranesan

Type
Stratovolcano
Elevation
2165m
Last eruption
2018
Mount Kusatsu-Shirane
Photo: 663highland · CC BY 2.5 · Wikimedia Commons
Type
Stratovolcano
Country
Japan
Region
Northwestern Pacific / Northeast Japan Volcanic Arc
Elevation
2165m
Coordinates
36.618, 138.528
Last eruption
2018
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic andesite

Geological summary

The Kusatsu-Shiranesan complex, located immediately north of Asama volcano, consists of a series of overlapping pyroclastic cones and three crater lakes.

Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →

From Wikipedia

Mount Kusatsu-Shirane is a 2,165 m (7,103 ft) active stratovolcano in Kusatsu, Gunma, Japan. It is called Kusatsu Shirane to differentiate it from the Mount Nikkō-Shirane on the other side of Gunma Prefecture. The summit of Kusatsu-Shirane volcano, located immediately north of Asama volcano, consists of a series of overlapping pyroclastic cones and three crater lakes. The largest of these is Yu-gama, an acidic emerald green lake with rafts of yellow sulfur sometimes seen floating on its surface.

Wikipedia · CC BY-SA · Read full article →

Eruption history

31 recordedGlossary

Record summary

Confirmed eruptions
28
Uncertain eruptions
3
Span of confirmed record
6550 BCE – 2018
Largest confirmed eruption
VEI 4 (1120 BCE)
Confirmed eruptions since 1900
18
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
6550 BCE~6264 BCE · 2 eruptions · max VEI 33980 BCE~3694 BCE · 1 eruptions · max VEI 21124 BCE~838 BCE · 1 eruptions · max VEI 4552 BCE~267 BCE · 1 eruptions · max VEI 319~304 · 1 eruptions · max VEI 21447~1732 · 1 eruptions · max VEI ?1732~2018 · 24 eruptions · max VEI 36550 BCE4551 BCE2266 BCE267 BCE1732

Detailed timeline

  1. 2018VEI 1Observed
    2018-01-23 – 2018-01-23
    Motoshiranesan
  2. 1989VEI 1Method not stated
    1989-01-06 – 1989-01-06
    NW part of Yu-gama
  3. 1983VEI 1Observed
    1983-07-26 – 1983-12-21
    Yu-gama, Kara-gama
  4. 1982VEI 1Observed
    1982-10-26 – 1982-12-29
    Kara-gama, Yu-gama
  5. 1976VEI 1Observed
    1976-03-02 – 1976-03-02
    NE corner of Mizu-gama Crater
  6. 1958VEI 1Observed
    1958-12-31 – end unknown
    Yu-gama
  7. 1942VEI 1Observed
    1942-02-02 – end unknown
    Fissure east and south of Yu-gama
  8. 1941VEI 1Observed
    1941-01-19 – 1941-01-19
  9. 1940VEI 1Observed
    1940-04-07 – 1940-09-13
  10. 1939VEI 1Observed
    1939-02-16 – 1939-08-28
    Yu-gama
  11. 1938VEI 1Observed
    1938-07-17 – 1938-10-05
    Yu-gama
  12. 1937VEI 1Observed
    1937-11-27 – 1938-02-16
    Yu-gama
  13. 1934VEI 2Observed
    1934-07-02 – end unknown
  14. 1933VEI ?Method not stated
    1933-07-02 – end unknown
  15. 1932VEI 3Observed
    1932-10-01 – 1932-11-16
    NE part of Yu-gama, SE outer rim
  16. 1927VEI 2Observed
    1927-12-29 – 1927-12-31
    N Yu-gama & S outer rim (in 1927, not 1928)
  17. 1925VEI 2Observed
    1925-01-22 – 1925-01-30
    Northern part of Yu-gama
  18. 1905VEI 2Observed
    1905-10-16 – 1905-10-16
    Yu-gama
  19. 1903VEI ?Method not stated
    1903-07-02 – end unknown
  20. 1902VEI 1Observed
    1902-07-15 – 1902-09-24
    North side of Yumi-ike
  21. 1900VEI 1Observed
    1900-10-01 – 1900-10-01
    NE part of Yu-gama
  22. 1897VEI 2Observed
    1897-07-08 – 1897-08-16
    NE part of Yu-gama
  23. 1882VEI 2Observed
    1882-08-06 – 1882-08-16
    Yu-gama, NE end of Kara-gama
  24. 1805VEI 2Observed
    1805-07-02 – end unknown
    Yu-gama
  25. 1470 (±150 yrs)VEI ?Geological estimate
    1470 – end unknown
  26. 50VEI 2Geological estimate
    50 – end unknown
    Yu-gama
  27. 550 BCEVEI 3Geological estimate
    550 BCE – end unknown
    Yu-gama
  28. 1120 BCE (±150 yrs)VEI 4Geological estimate
    1120 BCE – end unknown
    Moto-Shirane
  29. 3750 BCEVEI 2Geological estimate
    3750 BCE – end unknown
    Shirane
  30. 6270 BCE (±200 yrs)VEI ?Geological estimate
    6270 BCE – end unknown
  31. 6550 BCEVEI 3Geological estimate
    6550 BCE – end unknown
    Shirane

Nearby volcanoes

External links

⚠ For reference only. Not for emergency response.