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Éruption Anak Krakatau 2007 : principalement des cendres - panaches de cendres ventilation et puissant de cendres

Le type le plus souvent de l'activité a été de ventilation, de cendres survenant à des intervalles de généralement de 2 minutes, mais les panaches qui en résultent ont été les nuages de cendres relativement faible. Certaines des plus puissantes explosions produisent des panaches de hautes d'une hauteur plus de 1 km.

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Ash venting: this was the most frequent type of activity we observed during our expedition. Such emissions of dense billowing ash clouds were occurring at very regular intervals of approximately 2 minutes. These are probalbly related to deep-seated explosive phreatomagmatic activity. (c)
Ash venting: this was the most frequent type of activity we observed during our expedition. Such emi...
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Typical ash venting from the new crater. (c)
Typical ash venting from the new crater. (c)
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Regular pulses of ash create a series of ash plumes all drifting in the same direction eastward. (c)
Regular pulses of ash create a series of ash plumes all drifting in the same direction eastward. (c)
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Normal ash venting at dawn of 25 November. (c)
Normal ash venting at dawn of 25 November. (c)
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Sunset light over the caldera. Weak ash plumes drift in succession over to the east. (c)
Sunset light over the caldera. Weak ash plumes drift in succession over to the east. (c)
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Ash rich explosion early on 22 Nov. (c)
Ash rich explosion early on 22 Nov. (c)
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Weak explosions and near-continuous spattering from the vent in the lower left of the crater; only minor amounts of ash are produced. (22 Nov evening) (c)
Weak explosions and near-continuous spattering from the vent in the lower left of the crater; only m...
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23 Nov evening: the usual thunderstorms over Sumatra illuminate the sky to the west while Krakatau is venting ash. (c)
23 Nov evening: the usual thunderstorms over Sumatra illuminate the sky to the west while Krakatau i...
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(c)
(c)
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24 Nov evening: thick ash plumes rising to more than 1 km. (c)
24 Nov evening: thick ash plumes rising to more than 1 km. (c)
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(c)
(c)
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(c)
(c)
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(c)
(c)
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23 Nov evening: thick ash plumes rise from the eruptions under a full-moon sky. (c)
23 Nov evening: thick ash plumes rise from the eruptions under a full-moon sky. (c)
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Wind picks up and blows the ash clouds over the top of Anak Krakatau. (c)
Wind picks up and blows the ash clouds over the top of Anak Krakatau. (c)
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Finally, the light is off... (c)
Finally, the light is off... (c)
(3203 Hits)

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