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File:Time-lapse images of Mount St. Helens dome growth 2004-2008.webm

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Original file ‎(WebM audio/video file, VP9, length 1 min 27 s, 1,280 × 720 pixels, 1.25 Mbps overall, file size: 12.96 MB)

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Summary

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Description
English: The rapid onset of unrest at Mount St. Helens on September 23, 2004 initiated an uninterrupted lava-dome-building eruption that continued until 2008. The initial phase produced rapid growth of a lava dome as magma pushed upward. As shown in the video, an initial succession of lava spines, two recumbent and one steeply sloping, grew to nearly 500 m in length before disintegrating into mounds of rubble. The trajectory of lava extrusion was affected by the geometry of the crater, particularly the proximity of the vent to the south crater wall, and by the growing volume of erupted material.
Date
Source USGS Also on YouTube
Author USGS
Camera location46° 11′ 28.32″ N, 122° 11′ 39.84″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo


Media of the day This file was selected as the media of the day for 04 November 2015. It was captioned as follows:
English: The rapid onset of unrest at Mount St. Helens on September 23, 2004 initiated an uninterrupted lava-dome-building eruption that continued until 2008. The initial phase produced rapid growth of a lava dome as magma pushed upward. As shown in the video, an initial succession of lava spines, two recumbent and one steeply sloping, grew to nearly 500 m in length before disintegrating into mounds of rubble. The trajectory of lava extrusion was affected by the geometry of the crater, particularly the proximity of the vent to the south crater wall, and by the growing volume of erupted material.
Other languages
Čeština: Časosběrný dokument z období 23. září 2004 - rok 2008 zachycující různě rychlé výrony lávy ze sopky Mount St. Helens, Kaskádové pohoří ve státě Washington, USA.
English: The rapid onset of unrest at Mount St. Helens on September 23, 2004 initiated an uninterrupted lava-dome-building eruption that continued until 2008. The initial phase produced rapid growth of a lava dome as magma pushed upward. As shown in the video, an initial succession of lava spines, two recumbent and one steeply sloping, grew to nearly 500 m in length before disintegrating into mounds of rubble. The trajectory of lava extrusion was affected by the geometry of the crater, particularly the proximity of the vent to the south crater wall, and by the growing volume of erupted material.
中文（简体）：不平静的圣海伦火山爆发，造成从 2004 年 9 月23 日不间断的熔岩圆顶建构，直到2008 年才停止。一开始的阶段是熔岩往上推造成熔岩圆顶的快速成长。在影片中，一开始的熔岩刺，两个躺着，以及一个陡坡，在崩解为成堆瓦砾前，成长达 500 公尺长。熔岩喷发口附近受到火山口形状影响，特别是接近南边火山口壁的排气孔，以及不断爆发的物质。
中文（繁體）：不平靜的聖海倫火山爆發，造成從 2004 年 9 月 23 日不間斷的熔岩圓頂建構，直到 2008 年才停止。一開始的階段是熔岩往上推造成熔岩圓頂的快速成長。在影片中，一開始的熔岩刺，兩個躺著，以及一個陡坡，在崩解為成堆瓦礫前，成長達 500 公尺長。熔岩噴發口附近受到火山口形狀影響，特別是接近南邊火山口壁的排氣孔，以及不斷爆發的物質。

Licensing

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Public domain
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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File history

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Date/TimeThumbnailDimensionsUserComment
current10:20, 11 May 20151 min 27 s, 1,280 × 720 (12.96 MB)Matanya (talk | contribs)User created page with UploadWizard

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Transcode status

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Format Bitrate Download Status Encode time
VP9 720P 2.07 Mbps Completed 15:03, 23 October 2018 2 min 48 s
Streaming 720p (VP9) Not ready Unknown status
VP9 480P 1.17 Mbps Completed 15:03, 23 October 2018 2 min 23 s
Streaming 480p (VP9) Not ready Unknown status
VP9 360P 581 kbps Completed 15:02, 23 October 2018 1 min 47 s
Streaming 360p (VP9) Not ready Unknown status
VP9 240P 291 kbps Completed 15:02, 23 October 2018 2 min 6 s
Streaming 240p (VP9) 291 kbps Completed 18:10, 20 December 2023 1.0 s
WebM 360P 490 kbps Completed 00:52, 9 November 2015 2 min 12 s
Streaming 144p (MJPEG) 985 kbps Completed 04:59, 10 November 2023 4.0 s

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