Grand Prismatic Spring

Numéro d’image : 12644775
Grand Prismatic Spring
Coloured mats of thermophilic archaea in outflow of Grand Prismatic Spring, Yellowstone National Park. The vivid colours are the result of pigmented archaea in the microbial mats that grow around the edges of the mineral-rich water. Thermophiles are organisms that thrive under extremely hot conditions. The bacteria produce colours ranging from green to red; the amount of colour depends on the temperature of the water which favours one archaea over another. The centre of the pool is sterile due to extreme heat. The deep blue colour of the water in the centre of the pool results from the scattering of blue light by particles suspended in the water. The spring's water temperature varies between 147-188F. With dimensions of 250x380 feet, Grand Prismatic is the largest hot spring in Yellowstone.
Licence : Droits gérés
Crédit: Science Photo Library / Schleser, David M. / Nature's Images
Taille de l’image : 2848 px × 4288 px
Model Release : Non requis
Property Release : Non requis
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