Spring spring
In German, a spring spring is a hot spring that produces smaller or larger fountains when it emerges from the ground.
Emergence
Part of the groundwater is heated by the surrounding rock, which has been heated by volcanism . The boiling temperature in the earth is higher than in the open air due to the rock pressure. At Strokkur in Iceland , the water starts to boil at around 120 ° at a depth of around 10 m. Gas bubbles form, the volume expands and the mixture pushes a column of water out of the eruption canal in front of it. Some of the expelled water falls and seeps back into the eruption channel.
Spring springs and geysers: distinction between terms
The spring springs with high water columns are called geysers .
Significantly, there is another word in English for the umbrella term spring spring, it is not called geyser, but gusher .
Examples
Examples of hot spring springs in Iceland would be the springs in the spring spring area of Deildartunguhver . The highest water column is currently around 3 m. One would not speak of a geyser here.
On the other hand, the Strokkur in Haukadalur in Iceland with produced water columns of approx. 20-25 m height, as well as the famous American Old Faithful in Yellowstone National Park in the USA, are geysers.
Cold spring springs
The cold spring springs initiated by carbon dioxide emissions should also be mentioned, such as the geyser of Andernach near Koblenz , which, however, lies above an artificial borehole, whereas the hot spring springs in Iceland are mostly of natural origin.