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Unnamed submarine volcano in the eastern Pacific Ocean

Northern EPR at 9.8°N

割れ目火口 · Undersea Features · 2500m (海底)

Fluid containing precipitates rises from a "black smoker" chimney at the Tica vent at 9°N on the East Pacific Rise, photographed during a 2004 expedition sponsored by the National Science Foundation. Hot-vent animal communities (such as seen in the foreground of this image from the November to December 1989 expedition) were observed to have been buried by lava flows in 1991. Another eruption in 2005-2006 produced lava flows that covered seismometers.
Fluid containing precipitates rises from a "black smoker" chimney at the Tica vent at 9°N on the East Pacific Rise, photographed during a 2004 expedition sponsored by the National Science Foundation. Hot-vent animal communities (such as seen in the foreground of this image from the November to December 1989 expedition) were observed to have been buried by lava flows in 1991. Another eruption in 2005-2006 produced lava flows that covered seismometers. · 写真: Photo courtesy of Ridge2000, 2004 (http://www.ridge2000.org/eo/expeditions.php).
タイプ
割れ目火口
国
Undersea Features
地域
Eastern Pacific Volcanic Regions / Northern East Pacific Rise Volcanic Province
標高
2500m (海底)
座標
9.830, -104.300
最終噴火
2025年
テクトニクス環境
Rift zone / Oceanic crust (< 15 km)
火山地形
Cluster
主要岩石
Basalt / Picro-Basalt
地質学的概要

A series of dives with the submersible Alvin in 1991 on the East Pacific Rise at about 9°50'N detected evidence for a very recent, possibly ongoing, eruption. Hot-vent animal communities documented during November-December 1989 had been buried by fresh basaltic lava flows, and the scorched soft tissues of partially buried biota had not yet attracted bottom scavengers. Fresh black smoker chimneys and new lava flows were present. This site is south of the Clipperton Fracture Zone at a depth of about 2,500 m, and about 1,000 km SW of Acapulco, México; the south end of the Lamont Seamount chain is about 10 km NW. This is also the location where lava flows previously estimated as being less than roughly 50 years old had been found. Later dating using very short half-life radionuclides from dredged samples confirmed the young age of the eruption and indicated that another eruptive event had taken place in late 1991 and early 1992. An eruption in 2005-2006 produced lava flows that entrapped previously emplaced seismometers.

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
5050 BCE~4814 BCE · 1件 · 最大 VEI 04107 BCE~3871 BCE · 1件 · 最大 VEI 03163 BCE~2927 BCE · 1件 · 最大 VEI 02220 BCE~1984 BCE · 1件 · 最大 VEI 01277 BCE~1041 BCE · 1件 · 最大 VEI 097 BCE~138 · 1件 · 最大 VEI 0846~1082 · 2件 · 最大 VEI 01082~1318 · 1件 · 最大 VEI 01553~1789 · 2件 · 最大 VEI 01789~2025 · 7件 · 最大 VEI 05050 BCE3399 BCE1512 BCE1381789

詳細タイムライン

  1. 2025年VEI 0観測記録
    2025-04-28 ~ 2025-04-29
    Tica hydrothermal vent, 9°50’N (9.83°N)
  2. 2005年VEI 0観測記録
    2005-08-16 ~ 2006-01-16
    East Pacific Rise (9.8°N)
  3. 1991年VEI 0地質学的推定
    1991-01-27 ~ 1991-03-26
    East Pacific Rise (9.84°N)
  4. 1991年VEI 0地質学的推定
    1991-12-01 ~ 1992-02-05
    East Pacific Rise (9.84°N)
  5. 1988年VEI 0観測記録
    1988-07-02 ~ 進行中
    East Pacific Rise (9.27°N)
  6. 1950年VEI 0地質学的推定
    1950-07-02 ~ 進行中
    East Pacific Rise (9.87°N)
  7. 1875年VEI 0地質学的推定
    1875 ~ 進行中
    East Pacific Rise (9.9°N)
  8. 1650年 (±100年)VEI 0地質学的推定
    1650 ~ 進行中
    East Pacific Rise (9.82°N)
  9. 1600年 (±150年)VEI 0地質学的推定
    1600 ~ 進行中
    East Pacific Rise (9.87°N)
  10. 1200年 (±300年)VEI 0地質学的推定
    1200 ~ 進行中
    East Pacific Rise (9.82°N)
  11. 950年 (±2000年)VEI 0地質学的推定
    950 ~ 進行中
    East Pacific Rise (9.5°N)
  12. 850年 (±200年)VEI 0地質学的推定
    850 ~ 進行中
    East Pacific Rise (9.87°N)
  13. 紀元前 50年 (±2000年)VEI 0地質学的推定
    BCE 50 ~ 進行中
    East Pacific Rise (9.5°N)
  14. 紀元前 1050年 (±2000年)VEI 0地質学的推定
    BCE 1050 ~ 進行中
    East Pacific Rise (9.5°N)
  15. 紀元前 2050年 (±2000年)VEI 0地質学的推定
    BCE 2050 ~ 進行中
    East Pacific Rise (9.5°N)
  16. 紀元前 3050年 (±2000年)VEI 0地質学的推定
    BCE 3050 ~ 進行中
    EPR axis and East of axis
  17. 紀元前 4050年 (±2000年)VEI 0地質学的推定
    BCE 4050 ~ 進行中
    East Pacific Rise (9.5°N)
  18. 紀元前 5050年 (±8000年)VEI 0地質学的推定
    BCE 5050 ~ 進行中
    EPR axis and East and West of axis

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。