File:Thermal image of Percolating Spring (1 June 2017) 2.jpg

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Thermal_image_of_Percolating_Spring_(1_June_2017)_2.jpg (720 × 540 pixels, file size: 85 KB, MIME type: image/jpeg)

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English: The temperature scale is in degrees Fahrenheit.

Percolating Spring is a moderately rare geyser in the Lower Group of Yellowstone's West Thumb Geyser Basin. It is located just northwest of Ledge Spring and just east of Oil Slick Pool. The shallow basin is irregularly ovoid in plan view, is about 8 x 6 meters in size, and has an off-center main vent. Water level varies with time. During some seasons, there is little water present. In other years, the basin is full and overflowing, with constant bubbling from multiple vents and occasional very low doming surges of water.

Reported Percolating Spring eruptions have been small, reaching 1 to 2 feet high. In recent decades, this feature had small geyser eruptions in 1987, early summer 2001, and mid-summer 2005.

In 2000, researchers measured Percolating Spring's water temperature at 68 degrees Celsius, with a pH of about 5 (= acidic).
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Source https://www.flickr.com/photos/47445767@N05/35433217076/
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@N05/35433217076. It was reviewed on 12 December 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

12 December 2022

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current14:35, 12 December 2022Thumbnail for version as of 14:35, 12 December 2022720 × 540 (85 KB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/35433217076/ with UploadWizard

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