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|Description||Aerial view of Grand Prismatic Spring; Hot Springs, Midway & Lower Geyser Basin, Yellowstone National Park. The spring is approximately 250 by 300 feet (75 by 91 m) in size.
This photo shows steam rising from hot and sterile deep azure blue water (owing to the light absorbing overtone of an OH stretch which is shifted to 698 nm by hydrogen bonding ) in the center surrounded by huge mats of brilliant orange algae and bacteria. The color of which is due to the ratio of chlorophyll to carotenoid molecules produced by the organisms. During summertime the chlorophyll content of the organisms is low and thus the mats appear orange, red, or yellow. However during the winter, the mats are usually dark green, because sunlight is more scarce and the microbes produce more chlorophyll to compensate, thereby masking the carotenoid colors.
Español: Imagen aérea del Grand Prismatic Spring; aguas termales y geiser Midway (medio) y Lower (bajo), en el Parque Nacional Yellowstone, Wyoming.
|Source||http://www.nps.gov/features/yell/slidefile/thermalfeatures/hotspringsterraces/midwaylower/Images/17708.jpg ; English Wikipedia, original upload 1 April 2004 by ChrisO|
|Author||Jim Peaco, National Park Service|
|This is a featured picture on Wikimedia Commons (Featured pictures) and is considered one of the finest images.
This is a featured picture on the English language Wikipedia (Featured pictures) and is considered one of the finest images.
This is a featured picture on the Spanish language Wikipedia (Recursos destacados) and is considered one of the finest images.
|This image or media file contains material based on a work of a National Park Service employee, created during the course of the person's official duties. As a work of the U.S. federal government, such work is in the public domain. See the NPS website and NPS copyright policy for more information.
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