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Lac de lave en Pu'u ' O'o cratère (juillet 2007)

Nous vous présentons quelques photos du lac de lave qui occupent la partie orientale de Pu'u ' O'o cratère sur le volcan Kilauea, Hawaii, pris au cours du 14 au 20 juillet 2007.
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The active lava lake at dusk. The crust is so thin, that the red glow breaks through in many places; at the left side, parts of the crust are being overturned. (Photo: Tom Pfeiffer)
The active lava lake at dusk. The crust is so thin, that the red glow breaks through in many places;... [info]
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Overturning of older crust is a common feature at lava lakes. When the crust cools sufficiently, it contracts and becomes denser than the liquid underneath. Eventually, pieces of it become unstable and overturn to sink back into the lake. New crust is formed by upwelling lava from underneath. hawaii_e6829.jpg (Photo: Tom Pfeiffer)
Overturning of older crust is a common feature at lava lakes. When the crust cools sufficiently, it ... [info]
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Hot, liquid lava flooding over older crust. (Photo: Tom Pfeiffer)
Hot, liquid lava flooding over older crust. (Photo: Tom Pfeiffer) [info]
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Liquid lava floods older crust. The weight of the flooding lava causes new fractures and new segments of the crust to overturn (upper left of the photo).  (Photo: Tom Pfeiffer)
Liquid lava floods older crust. The weight of the flooding lava causes new fractures and new segment... [info]
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Fresh lava from the interior of the lake flooding over older crust on the lake. hawaii_e7042.jpg (Photo: Tom Pfeiffer)
Fresh lava from the interior of the lake flooding over older crust on the lake. hawaii_e7042.jpg (Ph... [info]
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The lava lake and the spattering vent at night. (Photo: Tom Pfeiffer)
The lava lake and the spattering vent at night. (Photo: Tom Pfeiffer) [info]
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The spattering vent feeding the lava lake and zig-zag fractures on the surface. (Photo: Tom Pfeiffer)
The spattering vent feeding the lava lake and zig-zag fractures on the surface. (Photo: Tom Pfeiffer... [info]
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The lava lake at dusk and an initial stage of crust overturn in the center.  (Photo: Tom Pfeiffer)
The lava lake at dusk and an initial stage of crust overturn in the center. (Photo: Tom Pfeiffer) [info]
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The lava lake in the evening light. At the far end, an overturn of crust has just taken place. (Photo: Tom Pfeiffer)
The lava lake in the evening light. At the far end, an overturn of crust has just taken place. (Phot... [info]
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hawaii_e7098.jpg (Photo: Tom Pfeiffer)
hawaii_e7098.jpg (Photo: Tom Pfeiffer) [info]
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hawaii_e7099.jpg (Photo: Tom Pfeiffer)
hawaii_e7099.jpg (Photo: Tom Pfeiffer) [info]
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Concentric fractures in the lava lake crust causing a larger overturn of several segments on the lava lake surface. (Photo: Tom Pfeiffer)
Concentric fractures in the lava lake crust causing a larger overturn of several segments on the lav... [info]
(2063 Hits)
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