Rocard
円錐火山 · France · 2515m (海底)
- タイプ
- 円錐火山
- 国
- France
- 地域
- Southern Pacific Volcanic Regions / Society Islands Hotspot Volcano Group
- 標高
- 2515m (海底)
- 座標
- -17.662, -148.586
- 最終噴火
- 1972年
- テクトニクス環境
- Intraplate / Oceanic crust (< 15 km)
- 火山地形
- Composite
- 主要岩石
- Trachyte / Trachydacite
地質学的概要
Rocard is a small volcanic seamount about 60 km WNW of Mehetia and 28 km ESE of Teahitia seamount. The summit lies 2,500 m below sea level on a submarine edifice about 8 km in diameter. Seismicity in 1966, 1971, and 1972 may have been caused by submarine eruptions (Talandier and Custer, 1976). Rocks dredged in 1986 "exploded" when they reached the surface, suggesting recent lava extrusion that had not yet had time to equilibrate with pressure and temperature conditions on the submerged flanks of the edifice.
Wikipedia の要約
英語版の要約Rocard is a submarine volcano in French Polynesia, located between the island of Mehetia and the Teahitia seamount. The volcano's summit is 2515m below sealevel. It has erupted in March 1966, September 1971, and July 1972.
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噴火履歴
詳細タイムライン
- 1972年VEI 0観測記録1972-07-04 ~ 1972-07-19
- 1971年VEI 0観測記録1971-09-06 ~ 進行中
- 1966年VEI 0観測記録1966-03-09 ~ 1966-03-20
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。