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A gas slug is a conglomerate of high pressure gas bubbles that forms within certain volcanoes, the agitation of which is a key driving factor in Strombolian eruptions. They start out as small bubbles of gas inside of volcanic magma. These accumulate into one large bubble, which starts to rise through the lava plume. Although the effect of gas slugs in lava is well understood, how they form is not well understood, but recent research suggests that they can form as deep as 3 km (2 mi) under the surface.

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  • Gas slug (en)
  • 氣栓 (zh)
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  • 氣栓（英語：gas slug）是指在火山內形成的高壓氣泡團，它是斯特朗博利型火山喷发的關鍵驅動力。它們最初是岩漿內的小氣泡。然後聚集成一個大氣泡，開始通過熔岩上升。一旦這種積聚的氣泡團塊到達火山柱子的頂部並與空氣接觸，由於氣壓較低，氣栓會產生爆裂。造成在斯特朗博利型火山喷发時，噴射到空氣中的典型弧型岩漿。這種類型的噴發為偶發，不會對其源頭噴口造成破壞。並且是最慢的活動形式之一，能夠維持數千年。對熔岩中的氣栓的影響很清楚，但它們是如何形成的卻不是很清楚，最近的研究表明它們可以在地表以下2英里（3.2公里）深的地方形成。 (zh)
  • A gas slug is a conglomerate of high pressure gas bubbles that forms within certain volcanoes, the agitation of which is a key driving factor in Strombolian eruptions. They start out as small bubbles of gas inside of volcanic magma. These accumulate into one large bubble, which starts to rise through the lava plume. Although the effect of gas slugs in lava is well understood, how they form is not well understood, but recent research suggests that they can form as deep as 3 km (2 mi) under the surface. (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Stromboli_Eruption.jpg
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  • A gas slug is a conglomerate of high pressure gas bubbles that forms within certain volcanoes, the agitation of which is a key driving factor in Strombolian eruptions. They start out as small bubbles of gas inside of volcanic magma. These accumulate into one large bubble, which starts to rise through the lava plume. Once this accumulated slug reaches the top of the column and comes in contact with air, it bursts with a loud pop because of the lower air pressure, throwing magma into the air in the typical lava arc of a Strombolian eruption. This type of eruption is episodic, non-damaging to its source vent, and one of the slowest forms of activity, with the ability to sustain itself for thousands of years. Although the effect of gas slugs in lava is well understood, how they form is not well understood, but recent research suggests that they can form as deep as 3 km (2 mi) under the surface. (en)
  • 氣栓（英語：gas slug）是指在火山內形成的高壓氣泡團，它是斯特朗博利型火山喷发的關鍵驅動力。它們最初是岩漿內的小氣泡。然後聚集成一個大氣泡，開始通過熔岩上升。一旦這種積聚的氣泡團塊到達火山柱子的頂部並與空氣接觸，由於氣壓較低，氣栓會產生爆裂。造成在斯特朗博利型火山喷发時，噴射到空氣中的典型弧型岩漿。這種類型的噴發為偶發，不會對其源頭噴口造成破壞。並且是最慢的活動形式之一，能夠維持數千年。對熔岩中的氣栓的影響很清楚，但它們是如何形成的卻不是很清楚，最近的研究表明它們可以在地表以下2英里（3.2公里）深的地方形成。 (zh)
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