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The Strokkur geyser may be confused with it, and the geothermal field it is in is known usually as either, Geysir or Haukadalur. Eruptions at Geysir can typically hurl boiling water up to 60 m (200 ft) in the air. [1] However, eruptions are nowadays infrequent, and have in the past stopped altogether for many years at a time. [6]
Grotto Geyser erupts about every eight hours. The interval between eruptions is longer after a longer eruption. The eruptions are about 10 feet (3.0 m) high and can last from about 1 hour to more than 10 hours long, although there have been eruptions that lasted more than 26 hours.
The geyser erupts from the casing of a well drilled in the late 19th century, which opened up a dead geyser. [41] In the case of the Big Mine Run Geyser in Ashland, Pennsylvania, the heat powering the geyser (which erupts from an abandoned mine vent) comes not from geothermal power, but from the long-simmering Centralia mine fire. [42]
Grand erupts every 4 to 8 hours. It belongs to the Grand Group (or Grand Geyser Complex), and its eruption is connected to those of the other geysers in the group, especially the adjacent Vent Geyser and Turban Geyser. [4] For a few hours before an eruption by Grand, Turban Geyser erupts for a duration of five minutes about every 17 to 22 minutes.
Major eruptions cause a heavy deluge of discharged water and a large steam cloud if the weather is cold or humid. [4] Eruptions are accompanied by a strong underground thumping caused by steam bubbles collapsing in the geyser's channels. [6] In 2009, intervals between major eruptions ranged from 9 to 36 hours, averaging 18 hours, 43 minutes. [6]
The most recent active phase of Giant Geyser started on August 6, 2005, and continued until April 29, 2008, when activity decreased dramatically; there was a single eruption again on August 26, 2008. There were 11 eruptions in 2005, 47 in 2006, 54 in 2007 (the most eruptions for any year since 1955), and 13 in 2008.
Sawmill Geyser, named for the whirring sound it makes during its eruption, is a geyser in Yellowstone National Park, Wyoming, United States. The geyser was named by Antoine Schoenborn of the Hayden Geological Survey of 1871 .
Riverside Geyser is a geyser in Yellowstone National Park in the U.S. state of Wyoming. The geyser is located on the Firehole River within the Upper Geyser Basin. The geyser shoots steam and water to heights of 75 feet (23 m) in an arch over the river, sometimes causing rainbows. The eruptions occur every 5 1 ⁄ 2 to 7 hours.