June 25, 2009: Matua Volcano

noreaster · 06-30-2009, 02:56 PM

The hole in the white cloud cover is probably the evaporation of the moisture droplets into the heated air column, which can hold more moisture, rising with the visible ash column.

The cap on the ash column is not "white steam" as steam is not visible. It may actually be a condensate cloud forming over the ash as it cools in the higher cold air above the cloud cover. The air over the column may be near the temperature of the air at the cloud cover level below, condensing out moisture from the ash and the surrounding air.

06-30-2009, 02:56 PM	#19
noreaster Kinda New Member Join Date: Jun 2009 Posts: 1	The hole in the white cloud cover is probably the evaporation of the moisture droplets into the heated air column, which can hold more moisture, rising with the visible ash column. The cap on the ash column is not "white steam" as steam is not visible. It may actually be a condensate cloud forming over the ash as it cools in the higher cold air above the cloud cover. The air over the column may be near the temperature of the air at the cloud cover level below, condensing out moisture from the ash and the surrounding air.

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