The cold-water geysers found in Germany’s Eifel volcanic field are not driven by heat, but by CO2, says reader.
The CO2 escaping from magma sources below the Eifel dissolves into the groundwater at some places, says volcanocafe.
Whenever the amount of dissolved CO2 reaches a critical point, bubbles start forming, lowering the hydrostatic pressure of the underlying water.
This geyser continues erupting until enough CO2 has been released to stabilize the situation again.
The Geyser Brubbel in Wallenborn is quiet for about 35 minutes and ejects cold water for about 2 minutes
The Eifel volcanic field is generally located around the towns and cities of Hillesheim, Gerolstein, Daun, Mayen and Koblenz.
Thanks to Steven Rowlandson for this link
“Considering how long this has been occurring the idea that CO2 is a serious problem should be dismissed as nonsense,” says Steven.