Hot springs
Hot springs form when heated water emerges through cracks in the Earth’s surface. Unlike geysers, which have obstructions near the surface (hence the eruptions), the water in hot springs flows unobstructed, creating an unbroken cycle of hot water that rises, cools, and falls. In the Great Prismatic Spring, this constant cycle creates rings of distinct temperatures around the center: very, very hot water gushes out from the center and gradually cools as it spreads across the massive surface of the spring.
The water in the center of the spring, which gushes out 100 feet from the underground chambers, can reach a temperature of 189 degrees Fahrenheit, making it too hot to support most life forms (some life forms exist, but they are limited to organisms that feed on inorganic chemicals like hydrogen gas). Because there is very little life in the center of the pool, the water appears extremely clear and a beautiful deep blue. But as the water spreads and cools, it creates concentric rings of different temperatures. These distinct temperature rings are critical because each ring creates a very different environment inhabited by different types of bacteria. And it is the different types of bacteria that give the spring its prismatic colors.
Color visualization
Inside these rings live different organisms, including bacteria that obtain their energy by photosynthesis.
The primary pigment of photosynthesis is chlorophyll, which we see in green. But chlorophyll levels can sometimes be overwhelmed by an accessory pigment known as carotenoids. Carotenoids are red, orange, or yellow; the yellow in Synechococcus is the exact same pigment, beta-carotene, which in high concentrations gives the orange we see in carrots.
As you move outward from the yellow band, the temperature of the hot spring begins to cool, and as the temperature cools, a more diverse set of bacterial life can flourish. The orange color, like the yellow in the ring next to it, comes from carotenoids, which these bacteria produce to protect themselves from the harsh light of the Yellowstone summer sun.
The outermost ring is the coolest, at about 131°F, and hosts the most diverse community of bacteria.
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Anne Fornier
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Anne Fornier2019-11-18 16:22:482021-09-27 17:19:46INTERVIEW OF ALEXANDRE DEL VALLE TO ANNE FORNIER
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Anne Fornier
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Anne Fornier2019-11-12 15:08:322021-09-27 17:20:09SERIES OF DOCUMENTARIES TO EDUCATE THE WORLD
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Anne Fornier
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Anne Fornier2019-09-09 15:00:002021-09-27 17:20:23INTERVIEW WITH ANNE FORNIER ON JET8
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Anne Fornier
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Anne Fornier2019-09-09 14:24:052021-09-27 17:21:07THE FOUNDATION IN MEXICO
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Anne Fornier
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Anne Fornier2019-08-22 08:32:462021-09-27 17:22:08HOW DOES A VOLCANIC ERUPTION AFFECT YOU?
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Anne Fornier
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Anne Fornier2019-08-06 11:19:122021-09-27 17:22:19WORRYING SITUATION OF THE UBINAS VOLCANO
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Anne Fornier
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Anne Fornier2019-08-05 15:16:332021-09-27 17:22:30THE FOUNDATION IN LE DAUPHINÉ LIBÉRÉ
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Anne Fornier
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Anne Fornier2019-08-05 14:33:232021-09-27 17:22:41THE FOUNDATION AT LESSOR SAVOYARD
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Anne Fornier
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Anne Fornier2019-06-11 15:34:472021-09-27 17:22:58EL TEIDE IS PART OF AN ACTIVE VOLCANIC SYSTEM
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Anne Fornier
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Anne Fornier2019-06-11 08:27:342021-09-27 17:23:10SINABUNG ERUPTS
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Anne Fornier
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Anne Fornier2019-06-04 14:55:072021-09-27 17:23:30YELLOWSTONE ERUPTION COULD CAUSE THE END OF HUMANITY
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Anne Fornier
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Anne Fornier2019-05-27 16:05:142021-09-27 17:23:41WHEN THE EARTH AWAKENS ITS BELT OF FIRE
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Anne Fornier
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Anne Fornier2019-05-07 16:01:022021-09-27 17:23:53THE FOUNDATION on RADIO OLOT
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Anne Fornier
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Anne Fornier2019-05-02 10:51:282021-09-27 17:24:03VOLCANO SCHOOL IN OLOT
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628
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Anne Fornier
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Anne Fornier2019-05-02 08:14:052021-09-27 17:24:18THE FOUNDATION AND VOLCANO SCHOOL AT IBERIAN PRESS
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Anne Fornier
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Anne Fornier2019-05-02 08:00:432021-09-27 17:25:13THE FOUNDATION and VOLCANO SCHOOL AT THE GARROTXI
Iberian Press
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Anne Fornier
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Anne Fornier2019-04-29 12:10:492021-09-27 17:25:54FIRST SCHOOL EXCHANGE ON VOLCANOES AND THEIR HAZARDS
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Anne Fornier
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Anne Fornier2019-04-26 07:52:482021-09-27 17:28:22TE ACERCO A MI VOLCAN
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Anne Fornier
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Anne Fornier2019-04-25 13:31:522021-09-27 17:28:35THE FOUNDATION IN EL PUNT AVUI
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Anne Fornier
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Anne Fornier2019-04-24 14:30:112021-09-27 17:29:57ANNE FORNIER: VOLCANOLOGIST AND WHISTLEBLOWER
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Anne Fornier
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Anne Fornier2019-04-09 08:12:012021-09-27 17:30:07DEADLY LAKES
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Anne Fornier
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Anne Fornier2019-04-04 14:06:182021-09-27 17:30:19THE PARICUTIN VOLCANO. TRAILS AND INTERPRETATION.
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Anne Fornier
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Anne Fornier2019-04-04 14:04:492021-09-27 17:30:31THE SEVEN LUMINARIES. CRATERS BETWEEN VILLAGES.
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Anne Fornier
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Anne Fornier2019-04-04 12:47:462021-09-27 17:30:43INTERNATIONAL NETWORK OF VOLCANO GUIDES
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Anne Fornier
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Anne Fornier2019-04-03 16:24:092021-09-27 17:31:10NATURAL HAZARDS IN GOMA AND THE SURROUNDING VILLAGES
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Anne Fornier
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Anne Fornier2019-04-03 15:48:212021-09-27 17:31:24INFLUENCE OF MOISTURE SOURCE DYNAMICS AND WEATHER PATTERNS IN CENTRAL-EASTERN AFRICA
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Anne Fornier
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Anne Fornier2019-02-19 12:12:172021-09-27 17:32:32VEI HOW DO YOU RATE THE STRENGTH OF AN ERUPTION?
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Anne Fornier
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Anne Fornier2019-02-18 17:07:142021-09-27 17:32:43CAMPI FLEGREI, A TICKING TIME BOMB
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Anne Fornier
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Anne Fornier2019-01-23 11:03:272021-09-27 17:39:35HOW A VOLCANO IS CREATED? THE HISTORY OF PARICUTÍN
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Anne Fornier
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Anne Fornier2019-01-16 10:52:182021-09-27 17:40:55COULD ETNA CAUSE A TSUNAMI?
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Anne Fornier
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Anne Fornier2018-12-20 12:40:492021-09-27 17:48:16THE FERTILITY OF VOLCANOES
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Anne Fornier
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Anne Fornier2018-12-20 11:56:112022-01-19 17:14:13WHAT WE KNOW ABOUT UNDERSEA VOLCANOES
Since 2021 VOLCANO ACTIVE FOUNDATION has been committed to the UN Global Compact corporate responsibility initiative and its principles in the areas of human rights, labour, the environment and anti-corruption.
A “DRILLING ACCIDENT” TO THE BIRTH OF A MUD VOLCANO