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Jepang · Gunung api kompleks

Gunung Unzen

Unzendake

Tipe
Gunung api kompleks
Ketinggian
1483 m
Letusan terakhir
1996
Gunung Unzen
Public domain · Wikimedia Commons
Tipe
Gunung api kompleks
Negara
Jepang
Wilayah
Pasifik Barat / Nankai Volcanic Arc
Ketinggian
1483 m
Koordinat
32.761, 130.299
Letusan terakhir
1996
Kondisi tektonik
Zona subduksi / Kerak benua (> 25 km)
Bentuk lahan
Komposit
Batuan utama
Andesit / Andesit basaltik
Ringkasan geologi

The massive Unzendake volcanic complex comprises much of the Shimabara Peninsula east of the city of Nagasaki. An E-W graben, 30-40 km long, extends across the peninsula. Three large stratovolcanoes with complex structures, Kinugasa on the north, Fugen-dake at the east-center, and Kusenbu on the south, form topographic highs on the broad peninsula. Fugendake and Mayuyama volcanoes in the east-central portion of the andesitic-to-dacitic volcanic complex have been active during the Holocene. The Mayuyama lava dome complex, located along the eastern coast west of Shimabara City, formed about 4000 years ago and was the source of a devastating 1792 CE debris avalanche and tsunami. Historical eruptive activity has been restricted to the summit and flanks of Fugendake. The latest activity during 1990-95 formed a lava dome at the summit, accompanied by pyroclastic flows that caused fatalities and damaged populated areas near Shimabara City.

Ringkasan Wikipedia

Ringkasan Inggris

Mount Unzen is an active stratovolcano of several overlapping small, volcanic cones, near the city of Shimabara, Nagasaki on the island of Kyushu, Japan's southernmost main island.

Wikipedia · CC BY-SA · Baca artikel lengkap →

Riwayat letusan

14 tercatatGlosarium
Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu · Gunakan tombol panah untuk berpindah batang, Enter untuk membuka
4050 SM~3848 SM · 1 letusan · VEI maks. ?2841 SM~2639 SM · 2 letusan · VEI maks. ?2236 SM~2035 SM · 1 letusan · VEI maks. ?1632 SM~1430 SM · 1 letusan · VEI maks. ?1229 SM~1027 SM · 1 letusan · VEI maks. ?787~988 · 1 letusan · VEI maks. ?1593~1794 · 4 letusan · VEI maks. 21794~1996 · 3 letusan · VEI maks. 24050 SM2639 SM1027 SM3841794

Garis waktu rinci

  1. 1996VEI 2Teramati
    1996-02-10 – 1996-05-01
    Fugen-dake
  2. 1990VEI 1Teramati
    1990-11-17 – 1995-02-16
    Fugen-dake
  3. 1798VEI ?Metode tidak dinyatakan
    1798-11-13 – 1798-12
    Fugen-dake
  4. 1792VEI 2Teramati
    1792-02-10 – 1792-07-22
    Fugen-dake (summit, NNE), Mayu-yama
  5. 1690VEI ?Metode tidak dinyatakan
    1690 – 1692
  6. 1663VEI 2Teramati
    1663-04 – 1663-05
    Fugen-dake (Tsukumo-jima Pond)
  7. 1663VEI 2Teramati
    1663-12-11 – 1663-12-27
    NE flank of Fugen-dake (1200 m)
  8. 860VEI ?Metode tidak dinyatakan
    860 – akhir tidak diketahui
  9. 1150 SM (±500 tahun)VEI ?Perkiraan geologi
    1150 SM – akhir tidak diketahui
    Fugendake-Sancho
  10. 1450 SM (±500 tahun)VEI ?Perkiraan geologi
    1450 SM – akhir tidak diketahui
    Fugen-dake (Kazaana)
  11. 2150 SM (±800 tahun)VEI ?Perkiraan geologi
    2150 SM – akhir tidak diketahui
    Mayu-yama (Tengu-yama)
  12. 2640 SM (±500 tahun)VEI ?Perkiraan geologi
    2640 SM – akhir tidak diketahui
    Mayu-yama (Shichimen-zan)
  13. 2720 SM (±300 tahun)VEI ?Perkiraan geologi
    2720 SM – akhir tidak diketahui
    Fugen-dake
  14. 4050 SM (±3000 tahun)VEI ?Perkiraan geologi
    4050 SM – akhir tidak diketahui
    Fugen-dake (Shimanomine)

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