Grand Geyser
The Grand Geyser is located in the Upper Geyser Basin of Yellowstone National Park in the USA . It is the largest regularly erupting geyser in the world. It got its name in 1871 from the participants of the Hayden expedition because they had not seen a larger geyser during their research trip through the Yellowstone area.
In the history of Yellowstone National Park, the Grand Geyser was one of the unpredictable geysers for a long time; its eruptions came very irregularly. Today he's much more regular. The eruptions of the Grand Geyser occur every 7 to 15 hours.
The Grand Geyser is one of the fountain-like geysers, i.e. H. the water is expelled like a surge and can consist of several impacts. An average eruption of the Grand Geysir lasts 9 to 12 minutes and consists of 1 to 4 bursts of water. The eruption can reach a height of up to 60 m. After an eruption has ended, the geyser's groundwater basin is completely empty. It then slowly fills up with water over a period of about five hours.
The Grand Geyser belongs to the Grand Group named after it and forms its center. The group also includes the Turban Geyser , Vent Geyser , Rift Geyser and the West Triplet Geyser .
Most of the geysers in the Grand Group are characterized by relatively frequent eruptions. They also influence each other in their activities. It was found that the Grand Geyser only erupts after a previous eruption of the Turban Geyser. The Vent Geyser erupts almost exclusively in connection with the activity of the Grand Geyser and eruptions of the Rift Geyser or the West Triplet Geyser have a retarding effect on eruptions of the Grand Geyser.
literature
- T. Scott Bryan: The geysers of Yellowstone . University Press, Boulder, Col. 2008, ISBN 978-0-87081-924-7 .
Web links
- Film of an eruption of the Grand Geyser
- Information of the Geyser Observation and Study Association (Engl.)
Coordinates: 44 ° 27 '59 " N , 110 ° 50' 17" W.