صورة:Grand prismatic spring.jpg

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Aerial view of Grand Prismatic Spring; Hot Springs, Midway & Lower Geyser Basin; Jim Peaco; July 2001 Yellowstone National Park Image by NPS Photo

The Grand Prismatic Spring of Yellowstone National Park showing 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 [1]) 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.

Source: http://www.nps.gov/yell/slidefile/thermalfeatures/hsandterraces/midwaylower/page-4.htm ; English Wikipedia, original upload 1 April 2004 by ChrisO

This image was selected as a picture of the day for . It was captioned as followed: English: Aerial view of The Grand Prismatic Spring of Yellowstone National Park. Asturianu: Vista aérea de la fonte termal (agües calecíes) Grand Prismatic Spring del Parque Nacional de Yellowstone. Беларуская: Від з паветра на Грэнд-Прызматык-Спрынг у нацыянальным парку Йелаўстон, ЗША. Česky: Horký pramen Grand Prismatic Spring v Yellowstonském národním parku Yellowstone National Park Deutsch: Luftbild des Grand Prismatic Spring im Yellowstone-Nationalpark. English: Aerial view of The Grand Prismatic Spring of Yellowstone National Park. Español: Vista aérea de la fuente termal Grand Prismatic Spring del Parque Nacional Yellowstone. Français : Vue aérienne du Grand Prismatic Spring du Parc national de Yellowstone, États-Unis Magyar: Légifotó a Yellowstone Nemzeti Parkban található Grand Prismatic Springről Íslenska: Loftmynd af Grand Prismatic Spring í Yellowstone-þjóðgarðinum í Bandaríkjunum. Italiano: Vista aerea del Grand Prismatic Spring nel Parco nazionale di Yellowstone, USA. 日本語: イエローストーン国立公園、グランド・プリズマティック・スプリングの航空写真。 Latina: Despectus e caelo Fontis Magni Prismatici, Areae Conservationis Nationalis Yellowstone (Americae) Nederlands: Luchtfoto van de Grand Prismatic Spring in het Amerikaanse Nationaal park Yellowstone Polski: Widok z lotu ptaka na The Grand Prismatic Spring, gejzer znajdujący się w Parku Narodowym Yellowstone. Português: Vista aérea da fonte termal quente Grand Prismatic Spring do Parque Nacional de Yellowstone. Русский: Вид с воздуха на Большой призматический источник (Grand Prismatic Spring) в Йеллоустоунском национальном парке, США. Svenska: Flygfoto av Grand Prismatic Spring i Yellowstones nationalpark. ‪中文(简体)‬: 从空中看美国黄石公园的大棱镜喷泉 ‪中文(繁體)‬: 從空中俯瞰美國黃石國家公園的大棱鏡泉

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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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