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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]
(1681 Hits)
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]
(1462 Hits)
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]
(1887 Hits)
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]
(1685 Hits)
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]
(832 Hits)
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]
(1716 Hits)
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]
(4235 Hits)
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]
(1816 Hits)
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]
(1580 Hits)
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]
(2384 Hits)
Spherical magma bubble (Photo: Tom Pfeiffer)
Spherical magma bubble (Photo: Tom Pfeiffer) [info]
(1849 Hits)
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