File:Shishaldin Volcano with steam plume (12-55 PM, 25 November 2023) (Aleutian Arc, Alaska, USA).jpg
Original file (898 × 573 pixels, file size: 280 KB, MIME type: image/jpeg)
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Summary
[edit]DescriptionShishaldin Volcano with steam plume (12-55 PM, 25 November 2023) (Aleutian Arc, Alaska, USA).jpg |
English: (still image from the Brown Peak web camera on Unimak Island, Alaska)
Shishaldin Volcano is a subduction zone stratovolcano on Unimak Island in the Aleutian Islands of Alaska. Minor lava eruptions in the summit crater started on 12 July 2023. Thirteen episodes of subsequent explosive ash eruptions took place on 14 July, 15 July, 18 July, 22-23 July, 25-26 July, 4 August, 14-15 August, 25 August, 5 September, 15 September, 24 to 25 September, 3 October, and 2-3 November 2023. Seen here is Shishaldin with a steam plume in the early afternoon of 25 November 2023. The Aleutian Arc is a subduction zone formed as the Pacific Plate dives underneath the North American Plate (this area is sometimes called the Bering Plate). The diving plate in subduction zones releases water at depth, which causes partial melting of overlying mantle rocks. The low-density melt rises and eventually reaches the surface, forming volcanoes. All subduction zones have volcanoes and frequent seismicity. Volcanoes in such settings tend to have explosive ash eruptions. Rocks and tephra deposits at subduction zone volcanoes are usually intermediate in composition - typically andesitic to dacitic. Shishaldin's erupted materials in 2023 have been mafic (basaltic). Info. at: en.wikipedia.org/wiki/Mount_Shishaldin and en.wikipedia.org/wiki/Aleutian_Arc |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/53356276276/ |
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@N05/53356276276. It was reviewed on 28 November 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
28 November 2023
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:01, 28 November 2023 | 898 × 573 (280 KB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53356276276/ with UploadWizard |
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Metadata
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User comments | Screenshot |
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Width | 1,111 px |
Height | 788 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 23:30, 25 November 2023 |
Exif version | 2.31 |
Color space | Uncalibrated |
Unique ID of original document | DC569091FCADB483CDF023B2F4814C11 |
Date and time of digitizing | 18:18, 25 November 2023 |
Date metadata was last modified | 18:30, 25 November 2023 |