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バレン島 (アンダマン諸島)

Barren Island

成層火山 · India · 354m

An ash plume in 1991 rises above Barren Island along the volcanic arc connecting north of Sumatra. The 3-km-wide island contains a 1.6-km-wide crater that is partially filled by a scoria cone that has been the source of eruptions since the first was recorded in 1787. Lava flows reached the coast during several recent eruptions.
An ash plume in 1991 rises above Barren Island along the volcanic arc connecting north of Sumatra. The 3-km-wide island contains a 1.6-km-wide crater that is partially filled by a scoria cone that has been the source of eruptions since the first was recorded in 1787. Lava flows reached the coast during several recent eruptions. · 写真: Photo courtesy of D. Haldar, 1991 (Geological Survey of India). · Wikimedia Commons
タイプ
成層火山
国
India
地域
Sunda-Banda Volcanic Regions / Andaman Volcanic Province
標高
354m
座標
12.278, 93.858
最終噴火
2026年
テクトニクス環境
Subduction zone / Continental crust (> 25 km)
火山地形
Composite
主要岩石
Basalt / Picro-Basalt
地質学的概要

Barren Island, a possession of India in the Andaman Sea about 135 km NE of Port Blair in the Andaman Islands, is the only historically active volcano along the N-S volcanic arc extending between Sumatra and Burma (Myanmar). It is the emergent summit of a volcano that rises from a depth of about 2250 m. The small, uninhabited 3-km-wide island contains a roughly 2-km-wide caldera with walls 250-350 m high. The caldera, which is open to the sea on the west, was created during a major explosive eruption in the late Pleistocene that produced pyroclastic-flow and -surge deposits. Historical eruptions have changed the morphology of the pyroclastic cone in the center of the caldera, and lava flows that fill much of the caldera floor have reached the sea along the western coast.

Wikipedia の要約

英語版の要約

Barren Island is an uninhabited island in the Andaman Sea. It is the only confirmed active volcano in the Indian subcontinent, and the only active volcano along a chain of volcanoes from Sumatra to Myanmar. It is a part of the Indian Union territory of Andaman and Nicobar Islands, and lies about 138 km (86 mi) northeast of the territory's capital, Port Blair.

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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
8060 BCE~7724 BCE · 1件 · 最大 VEI ?1689~2025 · 22件 · 最大 VEI 28060 BCE5707 BCE3017 BCE664 BCE1689

詳細タイムライン

  1. 2025年VEI ?観測記録
    2025-07-30 ~ 2026-01-11
  2. 2024年VEI 2観測記録
    2024-03-15 ~ 2024-05-29
  3. 2022年VEI ?観測記録
    2022-05-15 ~ 2022-05-15
  4. 2022年VEI 2観測記録
    2022-12-30 ~ 2023-08-18
  5. 2019年VEI 1観測記録
    2019-10-23 ~ 2022-01-30
    Summit crater
  6. 2018年VEI 1観測記録
    2018-09-25 ~ 2019-04-30
    Summit crater and NW, SW, and SE flanks
  7. 2017年VEI 1観測記録
    2017-01-15 ~ 2017-03-24
    Main cone, summit crater
  8. 2015年VEI 2観測記録
    2015-03-17 ~ 2016-05-17
    Main cone
  9. 2013年VEI 2観測記録
    2013-02-16 ~ 2013-02-16
    Summit caldera
  10. 2013年VEI 2観測記録
    2013-10-12 ~ 2014-06-01
    Main cone
  11. 2010年VEI 1観測記録
    2010-09-17 ~ 2011-06-22
    Summit caldera and N flank
  12. 2008年VEI 2観測記録
    2008-05-13 ~ 2010-04-19
  13. 2005年VEI 2観測記録
    2005-05-26 ~ 2007-12-23
    Central cone summit, N, S, and SW flanks
  14. 2000年VEI 1地質学的推定
    2000-01-16 ~ 進行中
  15. 1994年VEI 2観測記録
    1994-12-20 ~ 1995-06-05
    Central cone summit, SW & S flanks
  16. 1991年VEI 2観測記録
    1991-04-01 ~ 1991-10-31
    Central cone summit and NE flank
  17. 1852年VEI 2地質学的推定
    1852 ~ 進行中
  18. 1832年VEI 2観測記録
    1832-03 ~ 進行中
  19. 1803年VEI 2観測記録
    1803-11 ~ 1804-01-31
  20. 1795年VEI 2観測記録
    1795-12-20 ~ 1795-12-21
  21. 1789年VEI 2観測記録
    1789-03-24 ~ 進行中
  22. 1787年VEI 2観測記録
    1787-05-12 ~ 進行中
  23. 紀元前 8060年 (±100年)VEI ?地質学的推定
    BCE 8060 ~ 進行中

外部リンク

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