Steamboat Geyser

Steamboat Geyser

Steamboat Geyser, in Yellowstone National Park's Norris Geyser Basin, is the world's tallest currently-active geyser. During major eruptions, water may be thrown more than 300 feet (90 m) into the air. [cite book | first=T. Scott | last=Bryan | authorlink= | coauthors= | month=May | year=1995 | title=Geysers of Yellowstone, The | edition=3rd Edition | publisher=University Press of Colorado | id=ISBN 0-87081-365-X]

Steamboat's major eruptions last from 3 to 40 minutes in length, and are followed by powerful jets of steam. Steamboat does not erupt on a predictable schedule with recorded intervals between major eruptions ranging from four days to fifty years. The geyser was dormant from 1911 to 1961. Minor eruptions of 10 to 15 feet (3-5 m) are much more frequent. After an eruption the geyser often vents large amounts of steam for up to 48 hours. [cite web | date = 25 May 2005 | url = http://www.nps.gov/yell/tours/norris/steambt.htm | title = Steamboat Geyser | work = Norris Geyser Basin Tour | publisher = National Park Service | accessmonthday = May 24 | accessyear = 2006] Cistern Spring, located nearby, will drain completely during a major eruption of the geyser; the spring refills within a few days.

Waimangu Geyser in New Zealand "was" taller—exceptional eruptions were capable of reaching 1600 feet (500 m)—but a landslide changed the local water table and Waimangu has not erupted since 1904. [cite web | last = Jones | first = Gregory L. | date = March 12 2006 | url = http://www.wyojones.com/tall.htm | title = Tall Geysers | work = WyoJones' GEYSER SITE | accessmonthday = May 24 | accessyear = 2006] Excelsior Geyser of Yellowstone's Midway Geyser Basin likewise was taller, with eruptions reaching 300 feet. However, Excelsior has ceased erupting, and is now classified as a hot spring.

As of 23 May 2005, the last eight eruptions of Steamboat Geyser occurred on:
* 12 October 1991
* 2 May 2000
* 26 April 2002
* 13 September 2002
* 26 March 2003
* 27 April 2003
* 22 October 2003
* 23 May 2005

Steamboat Geyser possesses two vents approximately five meters apart: a northern and southern. The geyser is located at 7,555 feet (2303 m) above sea level.

References

External links

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