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Old Faithful


Old Faithful
Photo Information
Copyright: france demarbaix (France) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 283 W: 112 N: 813] (4026)
Genre: Places
Medium: Color
Date Taken: 2003-06
Categories: Nature
Camera: Canon EOS 500, Canon EF 28-80mm, Fuji Superia 200, Cokin Circular Polarizer
Photo Version: Original Version
Theme(s): Geysers [view contributor(s)]
Date Submitted: 2004-10-24 11:06
Viewed: 1552
Points: 14
[Note Guidelines] Photographer's Note [French]
The Yellowstone National Park counts nearly 200 geysers. Most famous is Old Faithful, located at Upper Geyser Basin. With the regularity of a metronome, it spouts out every 70 minutes to 40 m in height.
The 70 minutes, it is the time which it is necessary so that water presents in the hole of the geyser exceeds the point of vaporization or boiling point. Everyone knows that water boils at 100°C on the sea level and free air. But Yellowstone is located in altitude. Moreover, water is captive in impermeable narrow drains. The magma present under the earth's crust at low depth under the park of Yellowstone heats water slowly. The pressure thus increases much and in spite of the going beyond of the 100°C, water still does not boil until reaching a critical temperature which depends on the pressure accumulated in the water column. Suddenly, balance is broken, water passes to the state vapor and this one spawning time a passage towards the free air by involving water in a violent gushing. When all the vapor is released, that the pressure decreased, the drains fill again of the streaming water cooled in contact with the air, and the phenomenon starts again 70 minutes later.
jp80, carper, ephemere33, willy, sayan has marked this note useful
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Critiques [Translate]

  • Great 
  • danyy Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 7320 W: 441 N: 10099] (51515)
  • [2004-10-24 13:03]

Pas mal du tout, on ne se lasse pas de tels phénomènes; je me réjouis d'ailleurs de mon prochein voyage en Islande pour espérer ramener de telles prises.

Bonjour France, j'espere que tu n'as pas du attendre 70 minutes pour prendre ta photo ! En tout cas tu etais la au bon moment et ta photo est spectaculaire, en regardant bien la base en detail on voit bien la vapeur qui jaillit. Tres belle note aussi.
Amities, Jean-Yves

  • Great 
  • jp80 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1073 W: 181 N: 1002] (8427)
  • [2004-10-25 8:18]

Joli spectacle, tout cela se confond avec les nuages, pour une impression de "tout" bien intègre. Joli travail,

Pascal

Très jolie photo. Ce geyser est impressionnant.
On a presque du mal à distinguer la limite entre l'eau et les nuages...

Plus près c'est le court-bouillon ..
.. un grand classique de NP

  • Great 
  • carper Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 9533 W: 450 N: 15207] (53306)
  • [2004-10-25 11:57]

wauw France,
I like your shot a lot, The cropping is well done, the photo is taken from a nice angle, and th colours are great, very good job here.

là pas contre on voit bien la puissance de cet explusion fort interessante...on voit bien la puissance du jet et le plus beau est la vapeur que ca dégage...les couleurs sont superbements rendues...merci pour ces belles photos ...kizous..BI

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