File:Lake nyos co2 vent (cropped).jpg
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English: Artificial carbon dioxide vent in Lake Nyos, Cameroon. 2006.
In 1986, Lake Nyos, in the volcanic region of Cameroon, released a cloud of CO2 into the atmosphere, killing 1,700 people and 3,500 livestock in nearby towns and villages. Afterwards, engineers installed a pipe system to vent the gas from the lake. This photo shows the Lake Nyos pipe in operation. The 200-meter-long pipe is suspended from the raft and allows gas-rich water from the lake bottom to vent to the surface, where the CO2 dissipates into the atmosphere at a controlled rate. The shed on the control raft is about 6 feet tall and the fountain is about 120 feet tall. There are no pumps involved because the CO2 drives the fountain, just like a shaken bottle of champagne. Deutsch: Künstliches Kohlendioxidventil im Nyos-See, Kamerun. 2006. 1986 setzte der Nyos-See in der Vulkanregion Kameruns eine CO2-Wolke in die Atmosphäre frei, die 1.700 Menschen und 3.500 Tiere in den umliegenden Städten und Dörfern tötete. Anschließend installierten Ingenieure ein Rohrsystem, um das Gas aus dem See abzuleiten. Dieses Foto zeigt das Rohr am Nyos-See in Betrieb. Das 200 Meter lange Rohr ist am Floß aufgehängt und lässt gasreiches Wasser vom Seeboden an die Oberfläche entweichen, wo sich das CO2 kontrolliert in die Atmosphäre verflüchtigt. Der Schuppen auf dem Kontrollfloß ist etwa 1,83 m hoch und die Fontäne etwa 36,6 m hoch. Es sind keine Pumpen im Spiel, denn das CO2 treibt die Fontäne an, genau wie eine geschüttelte Champagnerflasche. |
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| Source | http://gallery.usgs.gov/photos/02_06_2012_qvm8PCb54J_02_06_2012_0#.Uun_0ffTnrd | |||
| Author | Photographer: Bill Evans, USGS | |||
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This image is in the public domain in the United States because it only 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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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 19:19, 5 September 2017 | | 1,428 × 1,040 (539 KB) | Mauerquadrant (talk | contribs) | File:Lake nyos co2 vent.jpg cropped 3 % vertically using CropTool with precise mode. |
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