Ficheiro:Black smoker.gif
Black_smoker.gif (350 × 309 píxeis, tamanho: 36 kB, tipo MIME: image/gif)
Summary
Source: USGS (public domain) http://pubs.usgs.gov/publications/text/exploring.html
View of the first high-temperature vent (380 °C) ever seen by scientists during a dive of the deep-sea submersible Alvin on the East Pacific Rise (latitude 21° north) in 1979. Such geothermal vents--called smokers because they resemble chimneys--spew dark, mineral-rich, fluids heated by contact with the newly formed, still-hot oceanic crust. This photograph shows a black smoker, but smokers can also be white, grey, or clear depending on the material being ejected. (Photograph by Dudley Foster from RISE expedition, courtesy of William R. Normark, USGS.)
Copyright status:
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This image is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy. |
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| Data e hora | Miniatura | Dimensões | Utilizador | Comentário | |
|---|---|---|---|---|---|
| atual | 19h26min de 11 de outubro de 2013 | | 350 × 309 (36 kB) | Luiz Alexandre Silva | Source: USGS (public domain) http://pubs.usgs.gov/publications/text/exploring.html View of the first high-temperature vent (380 °C) ever seen by scientists during a dive of the deep-sea submersible Alvin on the East Pacific Rise (latitude 21° north) i |
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