{"id":16727,"date":"2019-02-19T12:12:17","date_gmt":"2019-02-19T12:12:17","guid":{"rendered":"http:\/\/volcanx.cluster031.hosting.ovh.net\/vei-como-calificar-la-potencia-de-una-erupcion\/"},"modified":"2021-09-16T10:31:01","modified_gmt":"2021-09-16T08:31:01","slug":"vei-como-calificar-la-potencia-de-una-erupcion","status":"publish","type":"post","link":"https:\/\/volcanofoundation.org\/fr\/vei-como-calificar-la-potencia-de-una-erupcion\/","title":{"rendered":"VEI: COMMENT \u00c9VALUEZ-VOUS LA FORCE D&rsquo;UNE \u00c9RUPTION ?"},"content":{"rendered":"<div id=\"av_section_1\" class=\"avia-section av-jpmm5s20-ae43ae6de11f543a18cdd5f6c7f80f15 main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_one_full  avia-builder-el-first  avia-full-stretch av-parallax-section avia-bg-style-parallax av-minimum-height av-minimum-height-50 av-height-50  container_wrap fullsize\" data-section-bg-repeat=\"stretch\" data-av_minimum_height_pc=\"50\" data-av_min_height_opt=\"50\"><div class=\"av-parallax\" data-avia-parallax-ratio=\"0.3\"><div class=\"av-parallax-inner main_color avia-full-stretch\"><\/div><\/div><div class=\"container av-section-cont-open\"><main role=\"main\" itemprop=\"mainContentOfPage\" class=\"template-page content  av-content-full alpha units\"><div class=\"post-entry post-entry-type-page post-entry-16727\"><div class=\"entry-content-wrapper clearfix\">\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4lysb-e2a4178e7414917cbfc41c7bd96620ba\">\n.flex_column.av-4lysb-e2a4178e7414917cbfc41c7bd96620ba{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-4lysb-e2a4178e7414917cbfc41c7bd96620ba av_one_full  avia-builder-el-1  avia-builder-el-no-sibling  first flex_column_div av-zero-column-padding  \"><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jsbquw12-bb421b3c829a990a7802e02c13b1cdce\">\n#top .av-special-heading.av-jsbquw12-bb421b3c829a990a7802e02c13b1cdce{\npadding-bottom:10px;\ncolor:#ffffff;\nfont-size:4vw;\n}\nbody .av-special-heading.av-jsbquw12-bb421b3c829a990a7802e02c13b1cdce .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-jsbquw12-bb421b3c829a990a7802e02c13b1cdce .av-special-heading-tag{\nfont-size:4vw;\n}\n.av-special-heading.av-jsbquw12-bb421b3c829a990a7802e02c13b1cdce .special-heading-inner-border{\nborder-color:#ffffff;\n}\n.av-special-heading.av-jsbquw12-bb421b3c829a990a7802e02c13b1cdce .av-subheading{\nfont-size:30px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-jsbquw12-bb421b3c829a990a7802e02c13b1cdce .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-jsbquw12-bb421b3c829a990a7802e02c13b1cdce .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div class=\"av-special-heading av-jsbquw12-bb421b3c829a990a7802e02c13b1cdce av-special-heading-h1 custom-color-heading blockquote modern-quote modern-centered  avia-builder-el-2  avia-builder-el-no-sibling  av-inherit-size av-linked-heading\"><h1 class=\"av-special-heading-tag \" itemprop=\"headline\">VEI: COMMENT &Eacute;VALUEZ-VOUS LA FORCE D&rsquo;UNE &Eacute;RUPTION ?<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div><\/div><\/div><\/main><!-- close content main element --><\/div><\/div><div id=\"after_section_1\" class=\"main_color av_default_container_wrap container_wrap fullsize\"><div class=\"container av-section-cont-open\"><div class=\"template-page content  av-content-full alpha units\"><div class=\"post-entry post-entry-type-page post-entry-16727\"><div class=\"entry-content-wrapper clearfix\"><div class=\"flex_column_table av-rb2oj-e17b763a33d035c7ff67089d1c4cf7f5 sc-av_one_full av-equal-height-column-flextable\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-rb2oj-e17b763a33d035c7ff67089d1c4cf7f5\">\n.flex_column.av-rb2oj-e17b763a33d035c7ff67089d1c4cf7f5{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 20px 0px;\n}\n<\/style>\n<div class=\"flex_column av-rb2oj-e17b763a33d035c7ff67089d1c4cf7f5 av_one_full  avia-builder-el-3  el_after_av_section  el_before_av_one_full  avia-builder-el-first  first flex_column_table_cell av-equal-height-column av-align-top  \"><p><section class=\"av_textblock_section av-n449n-09a6194f1e6fd0d47dea222c3da43d11 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"><div class=\"avia_textblock\" itemprop=\"text\"><p>Les m&eacute;canismes &eacute;ruptifs d&rsquo;un volcan d&eacute;pendent d&rsquo;une relation complexe entre les param&egrave;tres physico-chimiques qui contr&ocirc;lent les magmas, notamment la teneur en SiO2, la teneur en substances volatiles (principalement la vapeur d&rsquo;eau) et la viscosit&eacute;.<\/p>\n<\/div><\/section><br>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-n449n-b96e2350f4e61c555b857f899f2b836f\">\n#top .av_textblock_section.av-n449n-b96e2350f4e61c555b857f899f2b836f .avia_textblock{\nfont-size:20px;\n}\n<\/style>\n<section class=\"av_textblock_section av-n449n-b96e2350f4e61c555b857f899f2b836f \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"><div class=\"avia_textblock\" itemprop=\"text\"><p><strong>Le <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> est un indice d&rsquo;explosivit&eacute; volcanique qui &eacute;value le potentiel destructeur d&rsquo;une &eacute;ruption par un chiffre.<\/strong><\/p>\n<\/div><\/section><br>\n<section class=\"av_textblock_section av-n449n-09a6194f1e6fd0d47dea222c3da43d11 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"><div class=\"avia_textblock\" itemprop=\"text\"><p>Il est difficile d&rsquo;attribuer une magnitude &agrave; une &eacute;ruption de mani&egrave;re quantitative. Walker (1980) a sugg&eacute;r&eacute; quelques param&egrave;tres qui pourraient caract&eacute;riser ad&eacute;quatement la nature et la taille d&rsquo;une <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;&Eacute;RUPTION EXPLOSIVE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Une &eacute;ruption &eacute;nergique qui produit principalement des cendres, de la pierre ponce et des d&eacute;bris balistiques fragmentaires (par opposition &agrave; une &eacute;ruption effusive).&lt;\/div&gt;\" href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/eruption-explosive-fr\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">&eacute;ruption explosive<\/a>, une &eacute;chelle similaire &agrave; l&rsquo;&eacute;chelle de Richter pour mesurer la magnitude des tremblements de terre. <strong>Le <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> va de 0 &agrave; 8, chaque intervalle num&eacute;rique repr&eacute;sentant un d&eacute;cuplement de l&rsquo;explosivit&eacute; volcanique par rapport au pr&eacute;c&eacute;dent<\/strong>, ainsi en 1982, le <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> a &eacute;t&eacute; d&eacute;fini comme l&rsquo;indice d&rsquo;explosion volcanique pour mesurer la magnitude d&rsquo;une &eacute;ruption volcanique, le <strong>huit &eacute;tant le degr&eacute; le plus &eacute;lev&eacute;<\/strong>.<\/p>\n<p>C&rsquo;est un indice qui combine plusieurs facteurs : volume total des produits &eacute;ject&eacute;s par le volcan (<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;LAVE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Terme g&eacute;n&eacute;ral d&eacute;signant le magma (roche en fusion) qui a fait &eacute;ruption &agrave; la surface de la Terre et qui conserve son int&eacute;grit&eacute; sous forme de masse fluide ou visqueuse, plut&ocirc;t que d&amp;#039;exploser en fragments.&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/lave-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>lave<\/a>, mat&eacute;riaux pyroclastiques, cendres volcaniques, etc.), hauteur atteinte par le nuage &eacute;ruptif, dur&eacute;e de l&rsquo;&eacute;ruption, injection troposph&eacute;rique et stratosph&eacute;rique des produits &eacute;ject&eacute;s.&nbsp;Le pouvoir dispersif est la surface sur laquelle se r&eacute;partissent les produits volcaniques et est li&eacute; &agrave; la hauteur de la colonne &eacute;ruptive.<\/p>\n<p><strong>A travers cet indice d&rsquo;explosivit&eacute;, nous pouvons d&eacute;crire le potentiel destructeur d&rsquo;une &eacute;ruption : l&rsquo;ampleur de la destruction des b&acirc;timents, des terres agricoles, de la v&eacute;g&eacute;tation, la propagation des cendres au sol, l&rsquo;impact du voile de poussi&egrave;re volcanique.<\/strong><\/p>\n<p>Cependant, <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;CE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Abr&eacute;viation de &amp;quot;l&amp;#039;&egrave;re commune&amp;quot; ou &amp;quot;l&amp;#039;&egrave;re actuelle&amp;quot;. CE se r&eacute;f&egrave;re &agrave; l&amp;#039;ann&eacute;e &eacute;coul&eacute;e depuis le d&eacute;but de l&amp;#039;&egrave;re actuelle dans le calendrier julien ou gr&eacute;gorien, par exemple l&amp;#039;ann&eacute;e civile. L&amp;#039;&egrave;re pr&eacute;c&eacute;dente est appel&eacute;e &amp;quot;Avant l&amp;#039;&egrave;re actuelle&amp;quot; ou BCE.&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/ce-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>ce<\/a> <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> pr&eacute;sente certaines limites, notamment la difficult&eacute; de mesurer le volume r&eacute;el des mat&eacute;riaux pyroclastiques. En effet, lorsque les mat&eacute;riaux se dispersent dans la mer ou br&ucirc;lent rapidement, les donn&eacute;es sont perdues. Une autre limite est la dur&eacute;e des &eacute;ruptions car tant que l&rsquo;&eacute;ruption n&rsquo;est pas termin&eacute;e (et parfois elle peut durer des ann&eacute;es), le volume total des mat&eacute;riaux projet&eacute;s ne peut &ecirc;tre connu avec pr&eacute;cision.<\/p>\n<\/div><\/section><\/p><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-rb2oj-eec70bfdf6e487bd03455fa6d9af795c\">\n.flex_column.av-rb2oj-eec70bfdf6e487bd03455fa6d9af795c{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-rb2oj-eec70bfdf6e487bd03455fa6d9af795c av_one_full  avia-builder-el-7  el_after_av_one_full  el_before_av_one_full  first flex_column_div av-zero-column-padding  column-top-margin\"><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jqz4wont-c0d56c37b1abadb0cb6593166d4c838c\">\n.avia-image-container.av-jqz4wont-c0d56c37b1abadb0cb6593166d4c838c img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-jqz4wont-c0d56c37b1abadb0cb6593166d4c838c .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div class=\"avia-image-container av-jqz4wont-c0d56c37b1abadb0cb6593166d4c838c av-styling- avia-align-center  avia-builder-el-8  avia-builder-el-no-sibling \" itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-1618 avia-img-lazy-loading-not-1618 avia_image \" src=\"https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-%C3%ADndice-de-explosividad-volc%C3%A1nica-1030x687.jpg\" alt=\"estudio sobre el VEI de Volcano active foundation\" title=\"VEI &iacute;ndice de explosividad volc&aacute;nica\" height=\"687\" width=\"1030\" itemprop=\"thumbnailUrl\" srcset=\"https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-&iacute;ndice-de-explosividad-volc&aacute;nica-1030x687.jpg 1030w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-&iacute;ndice-de-explosividad-volc&aacute;nica-300x200.jpg 300w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-&iacute;ndice-de-explosividad-volc&aacute;nica-768x512.jpg 768w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-&iacute;ndice-de-explosividad-volc&aacute;nica-1536x1024.jpg 1536w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-&iacute;ndice-de-explosividad-volc&aacute;nica-2048x1365.jpg 2048w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-&iacute;ndice-de-explosividad-volc&aacute;nica-1500x1000.jpg 1500w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-&iacute;ndice-de-explosividad-volc&aacute;nica-705x470.jpg 705w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-&iacute;ndice-de-explosividad-volc&aacute;nica-1200x800.jpg 1200w\" sizes=\"(max-width: 1030px) 100vw, 1030px\"\/><\/div><\/div><\/div><\/div>\n<div class=\"flex_column_table av-rb2oj-0e6eda16647160aa766344d7b1e50506 sc-av_one_full av-equal-height-column-flextable\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-rb2oj-0e6eda16647160aa766344d7b1e50506\">\n.flex_column.av-rb2oj-0e6eda16647160aa766344d7b1e50506{\nborder-radius:0px 0px 0px 0px;\npadding:30px 0 0 0;\n}\n<\/style>\n<div class=\"flex_column av-rb2oj-0e6eda16647160aa766344d7b1e50506 av_one_full  avia-builder-el-9  el_after_av_one_full  el_before_av_image  first flex_column_table_cell av-equal-height-column av-align-top  column-top-margin\"><section class=\"av_textblock_section av-n449n-09a6194f1e6fd0d47dea222c3da43d11 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"><div class=\"avia_textblock\" itemprop=\"text\"><p>Depuis 1815 et l&rsquo;&eacute;ruption du Tambora, les &eacute;ruptions n&rsquo;ont jamais d&eacute;pass&eacute; le seuil de <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> 6.<\/p>\n<p>L&rsquo;&eacute;ruption de l&rsquo;Eyjafj&ouml;ll (Islande) en 2010 est dite <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> 4.<\/p>\n<p>On estime que les &eacute;ruptions VEI6 se produisent en moyenne tous les 100 ans, les &eacute;ruptions <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> 7 tous les 1000 ans et les &eacute;ruptions <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> 8 avec dommages irr&eacute;parables tous les 100 000 ans.<\/p>\n<p>A titre d&rsquo;exemple, prenons la derni&egrave;re &eacute;ruption <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> 7 de l&rsquo;histoire : l&rsquo;&eacute;ruption du Tambora en 1815 et analysons les impacts.<\/p>\n<ul>\n<li>C&rsquo;est un panache &eacute;ruptif de 43 m de haut (d&eacute;passant la troposph&egrave;re et entrant dans la stratosph&egrave;re), l&rsquo;ampleur de son &eacute;ruption laisse des particules en suspension, les plus grossi&egrave;res restent dans l&rsquo;atmosph&egrave;re pendant 2 semaines et les plus fines pendant plusieurs mois et ann&eacute;es.&nbsp;Tous les &eacute;l&eacute;ments en suspension dans les couches sup&eacute;rieures de l&rsquo;atmosph&egrave;re influencent le climat global.<\/li>\n<li>L&rsquo;&eacute;ruption du Tambora a lib&eacute;r&eacute; en 24 heures (10-11 avril 1815) plusieurs tonnes de SO&#8322; (53-58X106) qui se sont transform&eacute;es en plusieurs tonnes d&rsquo;a&eacute;rosols H&#8322;SO&#8324; (93-118X106). Le SO2 &eacute;mis se transforme lentement en acide sulfurique (H2SO4), qui se condense dans l&rsquo;atmosph&egrave;re et se pr&eacute;cipite sous forme de pluie de particules tr&egrave;s fines. La concentration de ces particules provoque <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;CE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Abr&eacute;viation de &amp;quot;l&amp;#039;&egrave;re commune&amp;quot; ou &amp;quot;l&amp;#039;&egrave;re actuelle&amp;quot;. CE se r&eacute;f&egrave;re &agrave; l&amp;#039;ann&eacute;e &eacute;coul&eacute;e depuis le d&eacute;but de l&amp;#039;&egrave;re actuelle dans le calendrier julien ou gr&eacute;gorien, par exemple l&amp;#039;ann&eacute;e civile. L&amp;#039;&egrave;re pr&eacute;c&eacute;dente est appel&eacute;e &amp;quot;Avant l&amp;#039;&egrave;re actuelle&amp;quot; ou BCE.&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/ce-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>ce<\/a> qu&rsquo;on appelle un a&eacute;rosol.<\/li>\n<li>Combin&eacute;s aux particules (poussi&egrave;re et cendres), la lumi&egrave;re du soleil, l&rsquo;oxyg&egrave;ne (O2) et l&rsquo;humidit&eacute; interagissent pour former un voile volcanique, &eacute;galement appel&eacute; vog (smog volcanique). La pr&eacute;sence de vog en fortes concentrations forme une couche gazeuse dense appel&eacute;e bouclier solaire, dont la pr&eacute;sence emp&ecirc;che la pleine p&eacute;n&eacute;tration de la lumi&egrave;re solaire.&nbsp;L&rsquo;impact climatique a &eacute;t&eacute; d&eacute;cal&eacute; de &ndash; 0,8 &agrave; 1,3&deg;C pendant 2 &agrave; 3 ans. La fameuse ann&eacute;e non estivale de 181. Par son m&eacute;canisme &eacute;ruptif, le volcan est &eacute;troitement li&eacute; au climat et &agrave; sa dynamique.<\/li>\n<li>Plus de 90 000 morts, 11 000 directement li&eacute;s &agrave; l&rsquo;impact de l&rsquo;&eacute;ruption.<\/li>\n<li>Plus de 60 000 li&eacute;s &agrave; la famine, les cendres ont recouvert le paysage sur 600 km, y compris toutes les cultures, laissant tout enfoui dans la <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;CENDRE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Fragments fins (moins de 2 &agrave; 4 mm de diam&egrave;tre) de roche volcanique form&eacute;s par une explosion volcanique ou l&amp;#039;&eacute;jection d&amp;#039;une chemin&eacute;e volcanique.&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/cendre-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>cendre<\/a>.<\/li>\n<li>Un <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;TSUNAMI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Onde de mer gravitationnelle produite par une perturbation &agrave; grande &eacute;chelle et de courte dur&eacute;e du plancher oc&eacute;anique, telle qu&amp;#039;un tremblement de terre sous-marin, un effondrement, un affaissement ou une &eacute;ruption volcanique.&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/tsunami-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>tsunami<\/a> de 3 &agrave; 4 m&egrave;tres a &eacute;t&eacute; enregistr&eacute;, le bruit de l&rsquo;&eacute;ruption a &eacute;t&eacute; entendu jusqu&rsquo;&agrave; 2500 km et une onde de choc identique &agrave; une onde de choc nucl&eacute;aire s&rsquo;est propag&eacute;e jusqu&rsquo;au village de Sanggar.<\/li>\n<\/ul>\n<\/div><\/section><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jqz4wont-0afd08ad6cb7228723f5c636d1827076\">\n.avia-image-container.av-jqz4wont-0afd08ad6cb7228723f5c636d1827076 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-jqz4wont-0afd08ad6cb7228723f5c636d1827076 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div class=\"avia-image-container av-jqz4wont-0afd08ad6cb7228723f5c636d1827076 av-styling- avia-align-center  avia-builder-el-11  el_after_av_one_full  el_before_av_one_full \" itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-1620 avia-img-lazy-loading-not-1620 avia_image \" src=\"https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/erupcion-de-tambora-1030x681.jpg\" alt=\"VEI erupci&oacute;n de tambora\" title=\"erupcion de tambora\" height=\"681\" width=\"1030\" itemprop=\"thumbnailUrl\" srcset=\"https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/erupcion-de-tambora-1030x681.jpg 1030w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/erupcion-de-tambora-300x198.jpg 300w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/erupcion-de-tambora-768x508.jpg 768w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/erupcion-de-tambora-1536x1016.jpg 1536w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/erupcion-de-tambora-1500x992.jpg 1500w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/erupcion-de-tambora-705x466.jpg 705w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/erupcion-de-tambora-1200x794.jpg 1200w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/erupcion-de-tambora.jpg 2048w\" sizes=\"(max-width: 1030px) 100vw, 1030px\"\/><\/div><\/div><\/div>\n<div class=\"flex_column_table av-rb2oj-c4b9eae0a6c9aafeeb285d81e7572e9a sc-av_one_full av-equal-height-column-flextable\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-rb2oj-c4b9eae0a6c9aafeeb285d81e7572e9a\">\n.flex_column.av-rb2oj-c4b9eae0a6c9aafeeb285d81e7572e9a{\nborder-radius:0px 0px 0px 0px;\npadding:30px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-rb2oj-c4b9eae0a6c9aafeeb285d81e7572e9a av_one_full  avia-builder-el-12  el_after_av_image  el_before_av_image  first flex_column_table_cell av-equal-height-column av-align-top  \"><section class=\"av_textblock_section av-n449n-09a6194f1e6fd0d47dea222c3da43d11 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"><div class=\"avia_textblock\" itemprop=\"text\"><p>Les volcans que nous identifions avec les niveaux 7 et 8 du type <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a>, les soi-disant super-volcans, en raison de leur destruction cons&eacute;quente.<\/p>\n<p>Cependant, la volcanologie est une science que nous n&rsquo;avons &eacute;tudi&eacute;e que r&eacute;cemment, la compr&eacute;hension de la dynamique globale de la terre dans les ann&eacute;es 60 a montr&eacute; l&rsquo;importance de l&rsquo;&eacute;tude des volcans. Aujourd&rsquo;hui, il n&rsquo;existe toujours pas de fili&egrave;re directe en volcanologie (au niveau mondial). Il s&rsquo;agit de croiser des fili&egrave;res et des options.<\/p>\n<p>Les &eacute;tudes d&rsquo;&eacute;ruptions <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> 7 et 8 dont nous disposons sont des &eacute;tudes r&eacute;alis&eacute;es en collaboration avec des historiens.<\/p>\n<p>Prenons un exemple proche de nous, le fameux <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> 7 du volcan Campi Flegrei dans le golfe de Naples (1538).<\/p>\n<p>La situation dans le golfe de Naples est compliqu&eacute;e par la pr&eacute;sence des deux volcans Campi Flegrei (<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> 7) et V&eacute;suve (<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;VEI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;L&amp;#039;indice d&amp;#039;explosivit&eacute; volcanique (VEI) est une mesure relative de l&amp;#039;explosivit&eacute; des &eacute;ruptions volcaniques. Il a &eacute;t&eacute; con&ccedil;u par Chris Newhall de la Commission g&eacute;ologique des &Eacute;tats-Unis et Stephen Self &agrave; l&amp;#039;Universit&eacute; d&amp;#039;Hawaii en 1982.&amp;lt;span class=&amp;quot;file_mngr&amp;quot;&amp;gt; Newhall et soi, 1982&amp;lt;\/span&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/vei-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>VEI<\/a> 5) situ&eacute;s imm&eacute;diatement sous une grande partie de la ville moderne de Naples.<\/p>\n<p>La caldeira du volcan Campi Flegrei s&rsquo;est form&eacute;e il y a 39 000 ans et constitue la plus grande &eacute;ruption depuis 200 000 ans. Le Campi Flegrei comprend 24 crat&egrave;res.<\/p>\n<p>Bien qu&rsquo;il soit rest&eacute; presque 500 ans sans activit&eacute;, la derni&egrave;re remontant &agrave; 1538, le Campi Flegrei comprend deux &eacute;ruptions massives, il y a 39 000 et 15 000 ans, qui ont laiss&eacute; de profondes caldeiras dans le paysage. Son dernier &eacute;v&eacute;nement volcanique significatif a &eacute;t&eacute; une &eacute;ruption en 1538, connue sous le nom de Monte Nuovo.<\/p>\n<p>Des signes d&rsquo;activit&eacute; ont &eacute;t&eacute; observ&eacute;s depuis 1969-1974 et 1982-1984. Pour en savoir plus sur les Campi Flegrei, cliquez ici.<\/p>\n<p>En raison de l&rsquo;activit&eacute; accrue de la zone volcanique des Campi Flegrei, l&rsquo;Observatoire du V&eacute;suve (INGV : Istituto Nazionale di Geofisica e Vulcanologia) publie des bulletins hebdomadaires pour le d&eacute;partement de la protection civile.<\/p>\n<p>La soci&eacute;t&eacute; doit accorder l&rsquo;importance n&eacute;cessaire &agrave; ces &eacute;tudes et contr&ocirc;les. En raison de l&rsquo;ampleur de l&rsquo;explosion possible, il est urgent d&rsquo;avoir sous contr&ocirc;le tous les volcans les plus puissants du monde et de se pr&eacute;parer avec des plans d&rsquo;&eacute;vacuation actuels et fonctionnels. Savez-vous d&eacute;j&agrave; quels sont les 5 volcans les plus dangereux au monde ?<\/p>\n<\/div><\/section><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jqz4wont-97c106cfdf489c3c31f34acf3936aeb7\">\n.avia-image-container.av-jqz4wont-97c106cfdf489c3c31f34acf3936aeb7 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-jqz4wont-97c106cfdf489c3c31f34acf3936aeb7 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div class=\"avia-image-container av-jqz4wont-97c106cfdf489c3c31f34acf3936aeb7 av-styling- avia-align-center  avia-builder-el-14  el_after_av_one_full  avia-builder-el-last \" itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-1622 avia-img-lazy-loading-not-1622 avia_image \" src=\"https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-Campi-flegrei-1030x686.jpg\" alt=\"an&aacute;lisis VEI del campi flegrei\" title=\"VEI Campi flegrei\" height=\"686\" width=\"1030\" itemprop=\"thumbnailUrl\" srcset=\"https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-Campi-flegrei-1030x686.jpg 1030w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-Campi-flegrei-300x200.jpg 300w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-Campi-flegrei-768x512.jpg 768w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-Campi-flegrei-705x470.jpg 705w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-Campi-flegrei-1200x800.jpg 1200w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2019\/02\/VEI-Campi-flegrei.jpg 1280w\" sizes=\"(max-width: 1030px) 100vw, 1030px\"\/><\/div><\/div><\/div>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Les m&eacute;canismes &eacute;ruptifs d&rsquo;un volcan d&eacute;pendent d&rsquo;une relation complexe entre les param&egrave;tres physico-chimiques qui contr&ocirc;lent les magmas<\/p>\n","protected":false},"author":8,"featured_media":16728,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[330],"tags":[432],"doc_authors":[],"doc_languages":[],"class_list":["post-16727","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tout","tag-undrr-fr"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Les m\u00e9canismes \u00e9ruptifs d&#039;un volcan d\u00e9pendent d&#039;une relation complexe entre les param\u00e8tres physico-chimiques qui contr\u00f4lent les magmas\" \/>\n\t<meta name=\"robots\" content=\"max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n\t<meta name=\"author\" content=\"Anne Fornier\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/volcanofoundation.org\/fr\/vei-como-calificar-la-potencia-de-una-erupcion\/\" 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