Friday 16 December 2011

GEYSERS

A geyser is a type of hot spring that ejects a column of hot and steam into the air. The name comes from the island verb also “gjósa" which means "emanate".
The activity of the geysers is caused by contact between surface water and rocks heated by magma located below the ground. The heated water returns to the heat of the earth surface by convection through porous and fractured rocks. As the geyser is full, the water becomes more shallow be cold. The cold water from the surface pressed under hot, causing the water reservoir is heat, keeping the liquid at temperatures above its boiling point. Finally, the temperature of the bottom of the geyser begins to rise reaching boiling point. The steam bubbles rise to the tip of the duct. The heat water is mixing with the overheat steam sent off violently by the column. The resulting foam between the steam and hot is expelled out of the geyser. The water from the geyser will cooling and the eruption ends. Most geysers form in places where there are volcanic rocks such as riolita, which dissolves in hot water and forms mineral deposits called clusters silíceous or geiserits. With time, these deposits strongly consolidated rock, reinforcing the walls of the channel and allowing them to persist geyser. The geysers are a phenomeno quite fragile condition and whether any changes in their environment may disappear. One of the most amazing thing is that these phenomena are that they aren't unique on Earth. In Luna, Neptune and Triton, observed that eruptions in nitrogen geysers.




3 comments:

RMM said...

Hi,
Are there any geysers in Spain? and in Galicia?
Are they just tourist places or have they got other functions?
Thanks.

Paula López said...

There aren't geysers in Spain, but there is great geothermal activity in Galicia, for examlpe in Ourense. This energy is used for example for heating.

RMM said...

Ok, thanks

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