Danakil expedition Nov-Dec 08, part II: lava fountains

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"Lava fountains" are near-continuous gas bubbles escaping from the lava lake: they are the motor of the lake, transporting heat energy from the magma chamber to the surface and keeping the lake - underneath a thin, slvery crust - liquid and boiling where the gasses escape. (Photo: Tom Pfeiffer)
"Lava fountains" are near-continuous gas bubbles escaping from the lava lake: they are the motor of ... [info]
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On an enlarged section of the previous image, one can see the formation of Pele's hair - thin threads of lava glass, forming when bubbles burst and tear semi-liquid spatter apart. (c)
On an enlarged section of the previous image, one can see the formation of Pele's hair - thin thread... [info]
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Pele's hair, produced by the fountaining of the lava lake and dispersed by wind, accumulates in cracks and corners of rocks on the ground. (Photo: Tom Pfeiffer)
Pele's hair, produced by the fountaining of the lava lake and dispersed by wind, accumulates in crac... [info]
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A 2 m wide bursting bubble breaks the surface of the lake in the middle and starts a new fountain that increases in intensity and slowly wanders, drifting with the inner current in the lake, towards the margin of the lake. (Photo: Tom Pfeiffer)
A 2 m wide bursting bubble breaks the surface of the lake in the middle and starts a new fountain th... [info]
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This bubble has already exploded into small and larger, semi-liquid fragments, sometimes still connected by thin glassy threads,- Pele's hair. (Photo: Tom Pfeiffer)
This bubble has already exploded into small and larger, semi-liquid fragments, sometimes still conne... [info]
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Enlarged section of the previous image, showing the crispy surface of spatter and the heat blur in the background. (Photo: Tom Pfeiffer)
Enlarged section of the previous image, showing the crispy surface of spatter and the heat blur in t... [info]
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A starting lava fountain in the middel of the lake at night, creating a triple junction of rifts in the crust. (Photo: Tom Pfeiffer)
A starting lava fountain in the middel of the lake at night, creating a triple junction of rifts in ... [info]
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A 10 m wide mighty lava fountain is playing its firework display in the middle of the lake at night.  (Photo: Tom Pfeiffer)
A 10 m wide mighty lava fountain is playing its firework display in the middle of the lake at night.... [info]
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The lava fountain is loosing power, while still drifting towards the right, leaving a wake of disturbed, fresh crust behind. (Photo: Tom Pfeiffer)
The lava fountain is loosing power, while still drifting towards the right, leaving a wake of distur... [info]
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After the violent intermezzo with the central lava fountain, the degassing establishes itself igen at the margin. (Photo: Tom Pfeiffer)
After the violent intermezzo with the central lava fountain, the degassing establishes itself igen a... [info]
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Spattering from the fountain. (Photo: Tom Pfeiffer)
Spattering from the fountain. (Photo: Tom Pfeiffer) [info]
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The fountain starts to "walk" towards the right, according to the internal current in the magma. (Photo: Tom Pfeiffer)
The fountain starts to "walk" towards the right, according to the internal current in the magma. (Ph... [info]
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Close-up of a beautiful day-light fountain. Pele's hair can be seen forming as glassy threads between the liquid fragments of the bursting bubble. (Photo: Tom Pfeiffer)
Close-up of a beautiful day-light fountain. Pele's hair can be seen forming as glassy threads betwee... [info]
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Spherical magma bubble (Photo: Tom Pfeiffer)
Spherical magma bubble (Photo: Tom Pfeiffer) [info]
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Lava bubble breaking up older crust. (Photo: Tom Pfeiffer)
Lava bubble breaking up older crust. (Photo: Tom Pfeiffer) [info]
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A decreasing lava fountain, surrounded by crust covered with freshly ejected lava. (Photo: Tom Pfeiffer)
A decreasing lava fountain, surrounded by crust covered with freshly ejected lava. (Photo: Tom Pfeif... [info]
(776 Hits)
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