File:Cutaway view east rift zone Kilauea.png

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Cutaway_view_east_rift_zone_Kilauea.png ‎(617 × 227 pixels, file size: 34 KB, MIME type: image/png)

Description
English: Cutaway view of the east rift zone of Kīlauea Volcano, Hawaiʻi.

This simplified cutaway view (not to scale) of Kilauea Volcano shows the pathway of molten rock during the eruption of Pu‘u ‘Ō‘ō located on the east rift zone about 20 km from the caldera. Molten rock moves from the magma reservoir beneath the caldera through the east rift zone to Pu‘u ‘Ō‘ō. When molten rock erupts as lava from Pu‘u ‘Ō‘ō, it flows either onto the surface or through a lava-tube system 10-11 km to the sea.

During episode 54 (January 30, 1997), lava erupted from [Napau Crater about 4 km uprift from Pu‘u ‘Ō‘ō. The rift zone widened about 1.8 m in Napau and 36 cm about 2 km uprift, as magma forced a pathway to the surface. Chemical studies of lava samples from episode 54 indicate that two separate and distinct bodies of magma, stored in the rift zone near Napau Crater for many years, supplied lava for the eruptive activity.
Français : Cette coupe simplifiée (qui n'est pas à l'échelle) du volcan Kilauea montre le chemin emprunté par la lave lors de l'éruption du Pu‘u ‘Ō‘ō situé sur le rift est à environ 20 km de la caldeira. La roche en fusion part du réservoir de magma sous la caldeira et traverse le rift est jusqu'au Pu‘u ‘Ō‘ō. Lors de l'éruption proprement dite du Pu‘u ‘Ō‘ō, la lave s'écoule à la surface ou bien à travers des tunnels de lave sous la mer pendant 10 à 11 km. Lors de l'« épisode 54 » (30 janvier 1997), la lave sort du cratère Nāpau et le rift s'élargit de 1,8 m au Nāpau et de 36 cm pour le rift sur une distance de 2 km. La poussée du magma fait une percée à la surface du sol. Les analyses chimiques des échantillons de lave de l'épisode 54 semblent montrer que celle-ci proviennent de deux magmas stockés depuis de nombreuses années près du cratère Nāpau.
Date
Source USGS HVO
Author J. Johnson
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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Original upload log

Date/Time Dimensions User Comment
5 June 2007, 07:48:19 620 × 230 (44242 bytes) ThT (talk · contribs) {{Information |Description={{en|Cutaway view of the east rift zone of Kīlauea Volcano, Hawaiʻi}} |Source=[http://hvo.wr.usgs.gov/kilauea/erz_xsec.html USGS HVO] |Date=2000 |Author=J. Johnson |Permission=see below |other_versions= }} {{PD-USGov-USGS}}

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current00:01, 4 March 2017Thumbnail for version as of 00:01, 4 March 2017617 × 227 (34 KB)Ras67cropped and optimized
07:00, 4 December 2014Thumbnail for version as of 07:00, 4 December 2014620 × 230 (51 KB)GifTaggerBot: Converting file to superior PNG file. (Source: Cutaway_view_east_rift_zone_Kilauea.gif). This GIF was problematic due to non-greyscale color table.
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