Explosion Mayon Volcano 1999
Schlund zur Hölle. Nahaufnahme des Explosionsschlotes vom 22 Juni 1999 auf dem Kraterboden Mayons Vulkanes. |
Der Krater des Mayon Vulkanes nach der Phreatic Explosion vom 22 Juni 1999. Beachten Sie den Explosionsschlot auf dem Kraterboden der durch die um 16:58 Uhr stattgefundene, 10 Minuten andauernde Explosionssprengung verursacht wurde. |
Eine Säule von Dampf und Asche steigt aus dem Krater des Mayon Vulkanes während der Phreatic Explosion vom 22.Juni 1999. Die Dampf getriebene Explosion dauerte nur 10 Minuten. |
Explosionsgrube Mayon Vulkan vom 22 Juni 1999. Das Photo vom 26 Juni 1999 zeigt die schwache Dampf-Rauchwolke die an diesem Tag aus dem Explosionsschlot steigt. |
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Phreatic eruption (steam-blast)
Phreatic eruptions are steam-driven explosions that occur when water beneath the ground or on the surface is heated by magma, lava, hot rocks, or new volcanic deposits
(for example, tephra and pyroclastic-flow deposits). The intense heat of such material (as high as 1,170° C for basaltic lava) may cause water to boil and flash to steam, thereby generating an explosion of steam, water, ash, blocks, and bombs
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The most spectacular eruptions consist of violent explosions that blast great clouds of gas-laden debris into the atmosphere.
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"Phreatic" (or steam-blast) behavior. Here, a great column of steam, dust, ash, and cinders is blasted to a height of several thousand feet. This type of violent eruption is believed to occur when a large quantity of ground or surface water comes in contact with hot rock or magma in a volcanic vent and is instantly and explosively flashed to steam.
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Malapascua Island
Visayan Sea, Cebu, Philippines,