File:West Triplet Geyser eruption (1.31-2.05 PM, 4 June 2013) 04.jpg
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English: Geysers are hot springs that episodically erupt columns of water. They occur in few places on Earth. The highest concentration of geysers anywhere is in Yellowstone’s Upper Geyser Basin (northwestern Wyoming, USA).
West Triplet Geyser is a medium-sized, fountain-type geyser in the Grand Group of Yellowstone's Upper Geyser Basin. It has a subcircular basin 5 to 7 meters across, with an off-center vent. The basin floor tapers downward to the vent's throat in the shape of a funnel. West Triplet, as the name suggests, was one of three geysers in the Grand Group that frequently erupted together - North Triplet, East Triplet, and West Triplet. The former two geysers no longer exist, due to park service personnel removing rocks from the Grand Geyser-Triplets area long ago - this affected Grand Geyser's drainage directions. Sediments eventually filled up North Triplet & East Triplet. Modern West Triplet Geyser eruptive behavior is very likely non-natural as a result of this vandalism. West Triplet eruptions vary in duration from brief to over two hours long. Many last about 15 to 60 minutes. Eruptions consist of lazy to mildly energetic, spaced splashing events one to several feet high, often slightly angled (see video linked to below). Eruptions are preceded by water levels slowly rising (or fluctuating), eventually covering much of or all of the basin floor. The pool usually pulses and roils, accompanied by "flashing" (= collapsing steam bubbles in the vent), light subterranean thumping, and light overflow. Once the eruption has fully engaged, decent overflow occurs. After the cessation of an eruption, overflow ceases, water levels drop, and a drain occurs several minutes afterward. A single runoff channel drains from West Triplet to the west-southwest and merges with one of Grand Geyser's drainage channels. This water ends up in the Firehole River, about 125 meters away. In 1999, researchers measured the temperature of West Triplet Geyser's water at 87 degrees Celsius, with a pH of about 8.5 (= alkaline). Video of West Triplet Geyser erupting: www.youtube.com/watch?v=LnIA3Yh2LXM Time lapse of an entire West Triplet Geyser eruption: www.youtube.com/watch?v=IKc1BTQ1iZo |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/13849043163/ |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/13849043163. It was reviewed on 15 December 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 04:50, 15 December 2022 | | 4,288 × 2,848 (7 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/13849043163/ with UploadWizard |
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