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Gunung Chōkai

Chokaisan

Stratovolkan · Japan · 2236 m

Chokaisan is the largest of the NE Honshu volcanoes, seen here from the NE. The volcano is comprised of two main overlapping edifices, the younger eastern area contains the large collapse scarp that was the source of the Kisakata debris avalanche, seen here opening to the N. Smaller cones later filled much of the area near the rear scarp.
Chokaisan is the largest of the NE Honshu volcanoes, seen here from the NE. The volcano is comprised of two main overlapping edifices, the younger eastern area contains the large collapse scarp that was the source of the Kisakata debris avalanche, seen here opening to the N. Smaller cones later filled much of the area near the rear scarp. · Foto: Photo courtesy Ichio Moriya (Kanazawa University). · Wikimedia Commons
Tipe
Stratovolkan
Negara
Japan
Wilayah
Northwestern Pacific Volcanic Regions / Northeast Japan Volcanic Arc
Ketinggian
2236 m
Koordinat
39.099, 140.049
Letusan terakhir
1974
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

Massive Chokaisan volcano is composed of two overlapping stratovolcanoes with a conical profile that inspired the local names of Akita-Fuji or Dewa-Fuji. The summit of the gently sloping western edifice (Nishi-Chokaisan) is cut by a large scarp open to the south that contains lava domes. The younger eastern volcano (Higashi-Chokaisan) began forming about 20,000 years ago, and also has a large scarp, breached to the north. During an eruption about 2,600 years ago it was the source of the voluminous Kisakata debris avalanche, which reached the Pacific coast. Two post-caldera lava domes have been constructed at the upper SE end of the caldera. Intermittent reports of eruptions date back to the 6th century CE.

Ringkasan Wikipedia

Gunung Chōkai adalah gunung berapi aktif yang terletak di perbatasan selatan prefektur Akita dan prefektur Yamagata di wilayah Tōhoku, Jepang. Gunung ini memiliki ketinggian sekitar 2.236 m. Karena bentuknya yang simetris dan ukurannya yang besar, gunung ini juga dikenal sebagai Dewa no Fuji (出羽の富士) [2] atau oleh penduduk asli Akita disebut sebagai Akita Fuji. Gunung Chōkai dianggap keramat oleh pengikut cabang Shugendō dari Shinto dan populer di kalangan pejalan kaki.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1050 BCE~861 BCE · 1 letusan · VEI maks. 0672 BCE~483 BCE · 1 letusan · VEI maks. ?483 BCE~294 BCE · 1 letusan · VEI maks. ?462~651 · 3 letusan · VEI maks. ?651~840 · 6 letusan · VEI maks. ?840~1029 · 8 letusan · VEI maks. 31407~1596 · 2 letusan · VEI maks. ?1596~1785 · 5 letusan · VEI maks. 21785~1974 · 4 letusan · VEI maks. 21050 BCE294 BCE46210291785

Garis waktu rinci

  1. 1974VEI 1Teramati
    1974-03-01 – 1974-04-30
    E side of Shinzan, W of Kojin-yama
  2. 1834VEI 2Teramati
    1834-07-09 – 1834-07
  3. 1821VEI 2Teramati
    1821-05-23 – Berlangsung
    Near Shinzan and Shichiko-zan
  4. 1800VEI 2Teramati
    1800-12 – 1804-07
    Shinzan (foot of Kojin-yama)
  5. 1764VEI 2Perkiraan geologi
    1764 – Berlangsung
  6. 1740VEI 2Teramati
    1740-06 – 1747
    Small crater at foot of Kojin-yama
  7. 1738VEI 2Perkiraan geologi
    1738-12-31 – Berlangsung
  8. 1735VEI 2Perkiraan geologi
    1735 – Berlangsung
  9. 1659VEI ?Teramati
    1659-04 – 1663
  10. 1560VEI ?Perkiraan geologi
    1560 – Berlangsung
  11. 1477VEI ?Perkiraan geologi
    1477 – Berlangsung
  12. 999VEI ?Perkiraan geologi
    999 – Berlangsung
  13. 948VEI ?Perkiraan geologi
    948-12-31 – Berlangsung
  14. 939VEI ?Teramati
    939-05-15 – Berlangsung
  15. 884VEI ?Perkiraan geologi
    884-07-26 – 884-08
  16. 871VEI 2Teramati
    871-05-05 – Berlangsung
  17. 861VEI 3Perkiraan geologi
    861-05 – Berlangsung
  18. 857VEI ?Perkiraan geologi
    857-05 – Berlangsung
  19. 856VEI ?Perkiraan geologi
    856 – Berlangsung
  20. 839VEI ?Perkiraan geologi
    839-10-14 – Berlangsung
  21. 830VEI ?Teramati
    830-01 – Berlangsung
  22. 817 (±7 tahun)VEI ?Teramati
    817 – Berlangsung
  23. 804VEI ?Perkiraan geologi
    804 – 806
  24. 717VEI ?Perkiraan geologi
    717-07 – Berlangsung
  25. 711 (±3 tahun)VEI ?Teramati
    711 – Berlangsung
  26. 610 (±18 tahun)VEI ?Perkiraan geologi
    610 – Berlangsung
  27. 577VEI ?Perkiraan geologi
    577-12-01 – 578-07-15
  28. 573VEI ?Perkiraan geologi
    573-03 – Berlangsung
  29. 450 SMVEI ?Perkiraan geologi
    BCE 450 – Berlangsung
  30. 650 SMVEI ?Perkiraan geologi
    BCE 650 – Berlangsung
    Higashi-Chokai
  31. 1050 SMVEI 0Perkiraan geologi
    BCE 1050 – Berlangsung
    West flank (Saruana crater)

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.