File:MSH80 eruption mount st helens 05-18-80.jpg

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Revision as of 11:56, 15 March 2013
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--[[Special:Contributions/194.22.238.164|194.22.238.164]] 11:56, 15 March 2013 (UTC){{Information
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|Description={{en|On May 18, 1980, at 8:32 a.m. Pacific Daylight Time, a magnitude 5.1 earthquake shook Mount St. Helens. The bulge and surrounding area slid away in a gigantic rockslide and debris avalanche, releasing pressure, and triggering a major pumice and ash eruption of the volcano. Thirteen-hundred feet (400 meters) of the peak collapsed or blew outwards. As a result, 24 square miles (62 square kilometers) of valley was filled by a debris avalanche, 250 square miles (650 square kilometers) of recreation, timber, and private lands were damaged by a lateral blast, and an estimated 200 million cubic yards (150 million cubic meters) of material was deposited directly by lahars (volcanic mudflows) into the river channels. Sixty-one people were killed or are still missing.
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jonas och johon äger
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USGS Photograph taken on May 18, 1980, by Austin Post. }}
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{{ca|El 18 de maig, a les 8:32 a. m. Temps del Pacífic, un terratrèmol de una magnitud de 5,1 va fer trontollar la muntanya St. Helens. La protuberància l'àrea circumdant relliscà en una gegantina esllavissada de roques i un allau de rocam, alliberant la pressió, desencadenà una erupció de pedra tosca i cendra del volcà. 400 metres del puig van col·lapsar o van sortir volant. Com a resultat 62 quilometres quadrats de la vall van ser emplenats per la runa, 650 quilometres quadrats de llocs d'esbarjo, bosc, i finques privades van ser damnificades per una ràfega lateral, i una quantitat estimada en 150 milions de metres cúbics de material van ser dipositats per corrents de fang volcànic en els canals del riu. Cinquanta set persones van morir o han desaparegut (18 de Maig de 1980, Austin Post, USGS)}}
 
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{{es|Erupción del Monte Santa Helena}}
 
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{{fr|Le 18 mai 1980, à 8h32 minutes (heure du Pacifique), un tremblement de terre de 5,1 sur l'échelle de Richter secoue le [[:fr:Mont Saint Helens|Mont Saint Helens]], marquant le début de l'[[:fr:Éruption du mont Saint Helens en 1980|éruption du mont Saint Helens en 1980]].}}
 
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|Source=[http://vulcan.wr.usgs.gov/Imgs/Tif/MSH/Images/MSH80_eruption_mount_st_helens_05-18-80.tif Huge tif] converted to jpeg and caption from [http://vulcan.wr.usgs.gov/Volcanoes/MSH/Images/may18_images.html USGS Mount St. Helens], Washington
 
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May 18, 1980 Eruption Images
 
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|Date=1980-05-18
 
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|Author=Austin Post, USGS
 
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|Permission={{PD-USGov-Interior-USGS}}
 
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|other_versions=[[Image:MSH80_eruption_mount_st_helens_05-18-80-dramatic-edit.jpg|thumb|left|300px|cleaned and dramatically manipulated version]]
 
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}}
 
 

 

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[[Category:1980 eruption of Mount St. Helens]]
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[[Category: Aerial photographs of Mount St. Helens]]
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[[Category:Eruption columns]]
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[[Category:Austin Post]]
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