Echinus Geyser is a geyser in the Norris Geyser Basin of Yellowstone National Park in the United States.
History
Echinus was named during one of the U.S. Geological Surveys of the park in the late 1870s or early 1880s. The name Echinus come from the spiny appearance of the cone that resembles a Sea urchin or class Echinoidea[2].
Eruption
Echinus' eruptions are unpredictable. Its fountain reaches a height of as much as 40 feet (12 m) to 60 feet (18 m), with a duration of about 4 minutes. Prior to 1998, this geyser was very regular, every 35 to 75 minutes. There were also major eruptions that lasted as much as 118 minutes. It is speculated that there was a secondary underground water source that used to power the major eruptions and that the connection to the source was severed leading to Echinus' current state.[3]
Echinus is the largest acid-water geyser known. Its waters have a pH of 3.3 to 3.6, nearly as acidic as vinegar.[3] The water temperature is 80.3 °C (176.5 °F)[1]
| Images of Echinus Geyser |
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Echinus Geyser Pool, 1965
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References
External links
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