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Ol Doinyo Lengai vulkaan, februari 2007

In februari 2007, werd Ol Doinyo Lengai de top gekenmerkt door de vorming van een grote ineenstorting krater en de afwezigheid van zichtbare activiteit. Magma verplaatsen op een ondiepe diepte onder de oppervlakte was echter duidelijk hoorbaar.
Een rapport van dit bezoek kan worden gevonden hier.
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The tall hornito T49b still standing. To the right, the collapse area in the center of the crater. (Photo: Tom Pfeiffer)
The tall hornito T49b still standing. To the right, the collapse area in the center of the crater. (... [info]
(1563 Hits)
The central collapse area (Photo: Tom Pfeiffer)
The central collapse area (Photo: Tom Pfeiffer) [info]
(682 Hits)
Hornito T49b behind the collapse area (Photo: Tom Pfeiffer)
Hornito T49b behind the collapse area (Photo: Tom Pfeiffer) [info]
(767 Hits)
A cavity in the ground, probably the interior of a hornito now covered to the top by lava flows. (Photo: Tom Pfeiffer)
A cavity in the ground, probably the interior of a hornito now covered to the top by lava flows. (Ph... [info]
(880 Hits)
The green ridge that separates the active north crater from the south crater is seen in the background behind some older hornitos. (Photo: Tom Pfeiffer)
The green ridge that separates the active north crater from the south crater is seen in the backgrou... [info]
(621 Hits)
The (older) crater walls beneath the green summit ridge in the background. A person for scale. (Photo: Tom Pfeiffer)
The (older) crater walls beneath the green summit ridge in the background. A person for scale. (Phot... [info]
(1379 Hits)
The unstable rim of the pit crater (Photo: Tom Pfeiffer)
The unstable rim of the pit crater (Photo: Tom Pfeiffer) [info]
(695 Hits)
A weak glow from shallow magma is visible from one of the holes in the floor of the collapse pit. Moving magma is audible with sloshing sounds similar to a washing machine.  (Photo: Tom Pfeiffer)
A weak glow from shallow magma is visible from one of the holes in the floor of the collapse pit. Mo... [info]
(3154 Hits)
The same hornito seen more from the east, showing the cut by the collapse.  (Photo: Tom Pfeiffer)
The same hornito seen more from the east, showing the cut by the collapse. (Photo: Tom Pfeiffer) [info]
(789 Hits)
The majestic cone of Ol Doinyo Lengai stratovolcano and the grassland at its feet seen from the NE. The tall hornito T49b in its active crater is well visible.
 (Photo: Tom Pfeiffer)
The majestic cone of Ol Doinyo Lengai stratovolcano and the grassland at its feet seen from the NE. ... [info]
(2682 Hits)
The north crater at night the full moon illuminates a moonscape. (Photo: Tom Pfeiffer)
The north crater at night the full moon illuminates a moonscape. (Photo: Tom Pfeiffer) [info]
(765 Hits)
View from the summit onto the active north crater dominated by the large hornito T49b and the collapse area in the center. Lake Natron and the Rift Valley floor 2000 meters below in the background. (Photo: Tom Pfeiffer)
View from the summit onto the active north crater dominated by the large hornito T49b and the collap... [info]
(1951 Hits)
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