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Akita-Komagatake

Estratovolcán · Japan · 1637 m

Onamedake cone and the Amidaike pond are located at the NE end of the summit crater complex of Akita-Komagatake. This cone forms the highest point of the volcano and has produced lava flows to the N and E. This photo is taken from the NE rim of a 1.5 x 3 km caldera partially filled by basaltic cones.
Onamedake cone and the Amidaike pond are located at the NE end of the summit crater complex of Akita-Komagatake. This cone forms the highest point of the volcano and has produced lava flows to the N and E. This photo is taken from the NE rim of a 1.5 x 3 km caldera partially filled by basaltic cones. · Foto: Photo by Ichio Moriya (Kanazawa University). · Wikimedia Commons
Tipo
Estratovolcán
País
Japan
Región
Northwestern Pacific Volcanic Regions / Northeast Japan Volcanic Arc
Altitud
1637 m
Coordenadas
39.761, 140.799
Última erupción
1971
Contexto tectónico
Subduction zone / Continental crust (> 25 km)
Forma volcánica
Composite
Roca principal
Basalt / Picro-Basalt
Resumen geológico

Two calderas partially filled by basaltic cones cut the summit of Akita-Komagatake volcano. The larger southern caldera is 1.5 x 3 km wide and has a shallow sloping floor that is drained through a narrow gap cutting the SW caldera rim. On its northern side is a smaller more circular 1.2-km-wide caldera whose rim is breached widely to the NE. The two calderas were formed following explosive eruptions at the end of the Pleistocene, between about 13,500 and 11,600 years ago. Two cones, Medake and Kodake, occupy the NE corner of the southern caldera, whose long axis trends NE-SW. The Onamedake cone within the northern caldera has produced lava flows to the north and east; it has a 100-m-wide summit crater. Small-scale historical eruptions have occurred from cones and fissure vents inside the southern caldera. The temperatures of geothermal areas increased beginning in 2005, and some fumarolic plumes were observed in 2011-12.

Resumen de Wikipedia

Resumen en inglés

Akita-Komagatake is an active stratovolcano located 10 km east of Tazawa Lake, near the border between Akita and Iwate prefectures on Honshu Island. The volcano last erupted from 18 September 1970 to 25 January 1971. It is the highest mountain in Akita Prefecture and the second highest in Towada-Hachimantai National Park.

Wikipedia · CC BY-SA · Leer artículo completo →

Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
8800 BCE~8441 BCE · 1 erupciones · VEI máx. 38441 BCE~8082 BCE · 1 erupciones · VEI máx. 48082 BCE~7723 BCE · 1 erupciones · VEI máx. 47364 BCE~7005 BCE · 1 erupciones · VEI máx. ?6646 BCE~6287 BCE · 1 erupciones · VEI máx. 36287 BCE~5928 BCE · 2 erupciones · VEI máx. 31620 BCE~1261 BCE · 1 erupciones · VEI máx. ?543 BCE~184 BCE · 2 erupciones · VEI máx. 3184 BCE~175 · 1 erupciones · VEI máx. 2175~534 · 1 erupciones · VEI máx. ?534~893 · 1 erupciones · VEI máx. 3893~1252 · 1 erupciones · VEI máx. 21611~1970 · 4 erupciones · VEI máx. 28800 BCE6287 BCE3415 BCE902 BCE1611

Línea de tiempo detallada

  1. 1970VEI 2Observado
    1970-09-18 – 1971-01-26
    Me-dake
  2. 1932VEI 2Observado
    1932-07-21 – 1932-07-24
    Ishibora (south flank of Me-dake)
  3. 1902VEI 1Observado
    1902 – En curso
    Yoko-dake
  4. 1890VEI 2Observado
    1890-12 – 1891-01
  5. 1100VEI 2Estimación geológica
    1100 – En curso
  6. 807VEI 3Observado
    807 – En curso
  7. 400 (±500 años)VEI ?Estimación geológica
    400 – En curso
    Me-dake
  8. 50 a. C. (±200 años)VEI 2Estimación geológica
    BCE 50 – En curso
  9. 200 a. C. (±200 años)VEI ?Estimación geológica
    BCE 200 – En curso
    Minami-dake, Ko-dake
  10. 350 a. C. (±200 años)VEI 3Estimación geológica
    BCE 350 – En curso
  11. 1450 a. C. (±50 años)VEI ?Estimación geológica
    BCE 1450 – En curso
  12. 5950 a. C. (±200 años)VEI 3Estimación geológica
    BCE 5950 – En curso
  13. 6150 a. C. (±300 años)VEI ?Estimación geológica
    BCE 6150 – En curso
  14. 6350 a. C. (±200 años)VEI 3Estimación geológica
    BCE 6350 – En curso
  15. 7100 a. C. (±900 años)VEI ?Estimación geológica
    BCE 7100 – En curso
  16. 7850 a. C. (±200 años)VEI 4Estimación geológica
    BCE 7850 – En curso
  17. 8300 a. C. (±300 años)VEI 4Estimación geológica
    BCE 8300 – En curso
  18. 8800 a. C. (±300 años)VEI 3Estimación geológica
    BCE 8800 – En curso

Enlaces externos

⚠ Solo como referencia. No apto para respuesta ante emergencias.