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ガウア島

Gaua

成層火山 · Vanuatu · 729m

A plume rises from the active crater of Mount Garat in this view across Lake Letas, within the 6 x 9 km summit caldera of Gaua volcano (also known as Santa Maria). Three craters are located at the top of Mount Garat. The onset of eruptive activity from a vent high on the SE flank in 1962 ended a long period of dormancy.
A plume rises from the active crater of Mount Garat in this view across Lake Letas, within the 6 x 9 km summit caldera of Gaua volcano (also known as Santa Maria). Three craters are located at the top of Mount Garat. The onset of eruptive activity from a vent high on the SE flank in 1962 ended a long period of dormancy. · 写真: Photo by John Seach, 1999. · Wikimedia Commons
タイプ
成層火山
国
Vanuatu
地域
Southwestern Pacific Volcanic Regions / Vanuatu Volcanic Arc
標高
729m
座標
-14.281, 167.514
最終噴火
2022年
テクトニクス環境
Subduction zone / Intermediate crust (15-25 km)
火山地形
Composite
主要岩石
Andesite / Basaltic Andesite
地質学的概要

The roughly 20-km-diameter Gaua Island, also known as Santa Maria, consists of a basaltic-to-andesitic stratovolcano with an 6 x 9 km summit caldera. Small vents near the caldera rim fed Pleistocene lava flows that reached the coast on several sides of the island; littoral cones were formed where these lava flows reached the ocean. Quiet collapse that formed the roughly 700-m-deep caldera was followed by extensive ash eruptions. The active Mount Garet (or Garat) cone in the SW part of the caldera has three pit craters across the summit area. Construction of Garet and other small cinder cones has left a crescent-shaped lake. Eruptions have been frequent since the onset of activity from a vent high on the SE flank in 1962.

Wikipedia の要約

英語版の要約

Gaua is the largest and second most populous of the Banks Islands in Torba Province in northern Vanuatu. It covers 342 km2.

Wikipedia · CC BY-SA · 記事全文を読む →

噴火履歴

概要 (VEI時系列)
バーをクリックすると個別の噴火が表示されます
1875~1890 · 1件 · 最大 VEI ?1949~1963 · 2件 · 最大 VEI 21963~1978 · 9件 · 最大 VEI 31978~1993 · 3件 · 最大 VEI 22007~2022 · 4件 · 最大 VEI 218751904194919782007

詳細タイムライン

  1. 2022年VEI 1観測記録
    2022-05-03 ~ 2022-05-03
    Mt. Garet
  2. 2021年VEI 1観測記録
    2021-11-16 ~ 2021-11-16
    Mt. Garet
  3. 2011年VEI 1観測記録
    2011-09-17 ~ 2011-10-10
    Mt. Garat
  4. 2009年VEI 2観測記録
    2009-09-27 ~ 2010-06-19
    Mt. Garat
  5. 1982年VEI 2観測記録
    1982-04-18 ~ 1982-04-18
    Mt. Garat
  6. 1981年VEI 1観測記録
    1981-07-09 ~ 1981-07-09
    Mt. Garat
  7. 1980年VEI 1観測記録
    1980-07-02 ~ 進行中
    Mt. Garat
  8. 1977年VEI 2観測記録
    1977-04-13 ~ 1977-04-13
    Mt. Garat
  9. 1976年VEI 2観測記録
    1976-01-15 ~ 進行中
    Mt. Garat
  10. 1973年VEI 2観測記録
    1973-10-09 ~ 1974-01-21
    Mt. Garat (upper SE flank)
  11. 1971年VEI 2観測記録
    1971-05-12 ~ 1971-05-13
    Mt. Garat (upper SE flank)
  12. 1969年VEI 2観測記録
    1969-09-22 ~ 進行中
    Mt. Garat
  13. 1968年VEI 2観測記録
    1968-07-02 ~ 1968-12-01
    Mt. Garat (upper SE flank)
  14. 1967年VEI 2観測記録
    1967-07-16 ~ 進行中
    Mt. Garat
  15. 1966年VEI 2観測記録
    1966-07-02 ~ 進行中
    Mt. Garat
  16. 1965年VEI 3観測記録
    1965-09-27 ~ 1965-09-30
    Mt. Garat
  17. 1963年VEI 2観測記録
    1963-09-15 ~ 1963-11-09
    Mt. Garat (upper SE flank)
  18. 1962年VEI 2観測記録
    1962-07-16 ~ 進行中
    Mt. Garat
  19. 1875年VEI ?観測記録
    1875-06 ~ 進行中

外部リンク

⚠ 参考情報です。緊急対応には使用しないでください。