{"id":11595,"date":"2021-07-07T11:39:18","date_gmt":"2021-07-07T11:39:18","guid":{"rendered":"http:\/\/volcanx.cluster031.hosting.ovh.net\/?page_id=11595"},"modified":"2021-07-14T19:06:51","modified_gmt":"2021-07-14T17:06:51","slug":"deformation","status":"publish","type":"page","link":"https:\/\/volcanofoundation.org\/fr\/renforcer-la-connaissance-des-risques\/monitoring\/deformation\/","title":{"rendered":"DEFORMATION"},"content":{"rendered":"<div id=\"av_section_1\" class=\"avia-section av-85tvrm-3e95231a7b3e6eb192907f404f41a286 main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  avia-full-stretch av-parallax-section avia-bg-style-parallax av-minimum-height av-minimum-height-25 av-height-25  container_wrap fullsize\" data-section-bg-repeat=\"stretch\" data-av_minimum_height_pc=\"25\" data-av_min_height_opt=\"25\"><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-11595\"><div class=\"entry-content-wrapper clearfix\">\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-377mki-891bdcf97286948f143384db57d78c91\">\n.flex_column.av-377mki-891bdcf97286948f143384db57d78c91{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-377mki-891bdcf97286948f143384db57d78c91 av_one_fifth  avia-builder-el-1  el_before_av_three_fifth  avia-builder-el-first  first flex_column_div av-zero-column-padding  \"><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-44v1oi-4270c45783cf4dfabc2e0046b5bfca7a\">\n.flex_column.av-44v1oi-4270c45783cf4dfabc2e0046b5bfca7a{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-44v1oi-4270c45783cf4dfabc2e0046b5bfca7a av_three_fifth  avia-builder-el-2  el_after_av_one_fifth  el_before_av_one_fifth  flex_column_div av-zero-column-padding  \"><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2wneaq-c7141c0f93804d3dc6134a419c02967d\">\n#top .av_textblock_section.av-2wneaq-c7141c0f93804d3dc6134a419c02967d .avia_textblock{\ncolor:#ffffff;\n}\n<\/style>\n<section class=\"av_textblock_section av-2wneaq-c7141c0f93804d3dc6134a419c02967d \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock av_inherit_color\" itemprop=\"text\"><div class=\"h2-cinta-programas\">\n<h2 style=\"text-align: center; font-size: 2.5em;\">RENFORCER LA CONNAISSANCE DES RISQUES<\/h2>\n<\/div>\n<\/div><\/section><br>\n<section class=\"av_textblock_section av-2wneaq-34462baf835e0e88628f9f1fcf41a06e \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><p class=\"p-cinta-programas\" style=\"text-align: center; background: #f5312a !important;\">POURQUOI LA FONDATION EST N&Eacute;E ?<span class=\"flecha-donativo\" style=\"vertical-align: inherit;\"> &gt;<\/span><\/p>\n<\/div><\/section><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-377mki-fc3240a24cacc3f72868647236f26abd\">\n.flex_column.av-377mki-fc3240a24cacc3f72868647236f26abd{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-377mki-fc3240a24cacc3f72868647236f26abd av_one_fifth  avia-builder-el-5  el_after_av_three_fifth  avia-builder-el-last  flex_column_div av-zero-column-padding  \"><\/div><\/div><\/div><\/main><!-- close content main element --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k3yaxsym-b831a12c8acddceb21a18cbb360fd41d\">\n.avia-section.av-k3yaxsym-b831a12c8acddceb21a18cbb360fd41d{\nbackground-color:#000000;\nbackground-image:unset;\n}\n.avia-section.av-k3yaxsym-b831a12c8acddceb21a18cbb360fd41d .av-section-color-overlay{\nopacity:0.9;\nbackground-color:#000000;\n}\n<\/style>\n<div id=\"av_section_2\" class=\"avia-section av-k3yaxsym-b831a12c8acddceb21a18cbb360fd41d main_color avia-section-default avia-no-border-styling  avia-builder-el-6  el_after_av_section  el_before_av_textblock  avia-bg-style-fixed av-section-color-overlay-active container_wrap fullsize\"><div class=\"av-section-color-overlay-wrap\"><div class=\"av-section-color-overlay\"><\/div><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-11595\"><div class=\"entry-content-wrapper clearfix\">\n<div class=\"flex_column_table av-a5p0bb-0286912bb6bfb93801b9fa33860921b2 sc-av_one_full av-equal-height-column-flextable\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-a5p0bb-0286912bb6bfb93801b9fa33860921b2\">\n.flex_column.av-a5p0bb-0286912bb6bfb93801b9fa33860921b2{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-a5p0bb-0286912bb6bfb93801b9fa33860921b2 av_one_full  avia-builder-el-7  avia-builder-el-no-sibling  first flex_column_table_cell av-equal-height-column av-align-middle av-zero-column-padding  \"><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-joihkone-69e81b3ac324ed7c1268b0d71e700013\">\n#top .av_textblock_section.av-joihkone-69e81b3ac324ed7c1268b0d71e700013 .avia_textblock{\nfont-size:18px;\ncolor:#ffffff;\n}\n\n@media only screen and (min-width: 768px) and (max-width: 989px){ \n#top .av_textblock_section.av-joihkone-69e81b3ac324ed7c1268b0d71e700013 .avia_textblock{\nfont-size:16px;\n}\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top .av_textblock_section.av-joihkone-69e81b3ac324ed7c1268b0d71e700013 .avia_textblock{\nfont-size:16px;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top .av_textblock_section.av-joihkone-69e81b3ac324ed7c1268b0d71e700013 .avia_textblock{\nfont-size:16px;\n}\n}\n<\/style>\n<section class=\"av_textblock_section av-joihkone-69e81b3ac324ed7c1268b0d71e700013 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock av_inherit_color\" itemprop=\"text\"><blockquote>\n<p><a href=\"http:\/\/www.undrr.org\">Les DISASTERS NE SONT PAS NATURELS<\/a>, ils sont socialement construits, par manque de pr&eacute;paration, de pr&eacute;vention, de travail d&rsquo;att&eacute;nuation, d&rsquo;&eacute;ducation et de suivi. <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> sont des risques ou des dangers naturels qui ont un impact sur les soci&eacute;t&eacute;s vuln&eacute;rables. Les connaissances aident &agrave; r&eacute;duire la vuln&eacute;rabilit&eacute; sociale et structurelle afin d&rsquo;avoir des soci&eacute;t&eacute;s plus r&eacute;silientes!<\/p>\n<\/blockquote>\n<\/div><\/section><\/div><\/div><!--close column table wrapper. Autoclose: 1 --><\/div><\/div><\/div><!-- close content main div --><\/div><\/div><\/div><div id=\"after_section_2\" 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-11595\"><div class=\"entry-content-wrapper clearfix\"><section class=\"av_textblock_section av-kqt9jd5e-cd33964ef4e3b772df7fef522b816d29 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><div class=\"panel-pane pane-node-title\">\n<div class=\"pane-content\">\n<h2>Les mouvements &agrave; la surface fournissent des informations sur la sous-surface<\/h2>\n<\/div>\n<\/div>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kqt9ln1w-f6affe7cdeee6be02fc225bbc4bc5689\">\n#top .hr.av-kqt9ln1w-f6affe7cdeee6be02fc225bbc4bc5689{\nmargin-top:15px;\nmargin-bottom:15px;\n}\n.hr.av-kqt9ln1w-f6affe7cdeee6be02fc225bbc4bc5689 .hr-inner{\nwidth:100%;\nborder-color:#d8d8d8;\n}\n<\/style>\n<div class=\"hr av-kqt9ln1w-f6affe7cdeee6be02fc225bbc4bc5689 hr-custom  avia-builder-el-10  el_after_av_textblock  el_before_av_three_fifth  hr-center hr-icon-no\"><span class=\"hr-inner inner-border-av-border-thin\"><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1wlhzr6-8cc129343b9618e21784b665a1361b31\">\n.flex_column.av-1wlhzr6-8cc129343b9618e21784b665a1361b31{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-1wlhzr6-8cc129343b9618e21784b665a1361b31 av_three_fifth  avia-builder-el-11  el_after_av_hr  el_before_av_two_fifth  first flex_column_div av-zero-column-padding  \"><section class=\"av_textblock_section av-kqt9tgn4-955ae44a3b12f5f76d41e08b4c147261 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><h3>La d&eacute;formation est cr&eacute;&eacute;e par l&rsquo;inflation d&rsquo;un r&eacute;servoir magmatique et une intrusion<\/h3>\n<p>Les d&eacute;formations de surface fournissent des informations importantes sur la structure interne et le fonctionnement des volcans. Chaque &eacute;ruption est pr&eacute;c&eacute;d&eacute;e d&rsquo;un lent gonflement (inflation) du volcan et d&rsquo;un d&eacute;gonflement rapide pendant l&rsquo;&eacute;ruption. <strong>La principale source de <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;D&Eacute;FORMATION&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Changements &agrave; la surface d&amp;#039;un volcan qui se produisent en raison du mouvement du magma sous la surface. La plupart des d&eacute;formations volcaniques ne peuvent &ecirc;tre d&eacute;tect&eacute;es et mesur&eacute;es qu&amp;#039;&agrave; l&amp;#039;aide de techniques d&amp;#039;arpentage pr&eacute;cises telles qu&amp;#039;un syst&egrave;me de positionnement mondial (GPS), un tiltm&egrave;tre, un radar d&amp;#039;ouverture synth&eacute;tique interf&eacute;rom&eacute;trique (InSAR) ou un distancem&egrave;tre &eacute;lectronique (EDM).&lt;\/div&gt;\" href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/deformation-fr\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">d&eacute;formation<\/a> est magnatique<\/strong>.<\/p>\n<\/div><\/section><br>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kqta1i5b-a345f9d882c51d4089993cf6d16e9b60\">\n#top .hr.hr-invisible.av-kqta1i5b-a345f9d882c51d4089993cf6d16e9b60{\nheight:20px;\n}\n<\/style>\n<div class=\"hr av-kqta1i5b-a345f9d882c51d4089993cf6d16e9b60 hr-invisible  avia-builder-el-13  el_after_av_textblock  el_before_av_textblock \"><span class=\"hr-inner \"><span class=\"hr-inner-style\"><\/span><\/span><\/div><br>\n<section class=\"av_textblock_section av-kqtdsfvd-d152eb0e3d3e094fcc403a1e69a26b44 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><h3>Surveillance des d&eacute;formations<\/h3>\n<p>Les modifications de la <strong>surface du sol<\/strong> d&rsquo;un volcan (<a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;D&Eacute;FORMATION&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Changements &agrave; la surface d&amp;#039;un volcan qui se produisent en raison du mouvement du magma sous la surface. La plupart des d&eacute;formations volcaniques ne peuvent &ecirc;tre d&eacute;tect&eacute;es et mesur&eacute;es qu&amp;#039;&agrave; l&amp;#039;aide de techniques d&amp;#039;arpentage pr&eacute;cises telles qu&amp;#039;un syst&egrave;me de positionnement mondial (GPS), un tiltm&egrave;tre, un radar d&amp;#039;ouverture synth&eacute;tique interf&eacute;rom&eacute;trique (InSAR) ou un distancem&egrave;tre &eacute;lectronique (EDM).&lt;\/div&gt;\" href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/deformation-fr\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">d&eacute;formation<\/a> du volcan) apparaissent sous la forme d&rsquo;un gonflement, d&rsquo;un enfoncement ou d&rsquo;une fissuration, qui peuvent &ecirc;tre caus&eacute;s par le <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;MAGMA&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Roche fondue sous la surface de la Terre.&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/magma-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>magma<\/a>, le gaz ou d&rsquo;autres fluides (g&eacute;n&eacute;ralement de l&rsquo;eau) se d&eacute;pla&ccedil;ant sous terre ou par des mouvements de la <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;CRO&Ucirc;TE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;La cro&ucirc;te est la couche la plus ext&eacute;rieure majeure de la terre, allant d&amp;#039;environ 10 &agrave; 65 km d&amp;#039;&eacute;paisseur dans le monde entier. Les 15 &agrave; 35 km sup&eacute;rieurs de cro&ucirc;te sont suffisamment fragiles pour produire des tremblements de terre.&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/croute-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>cro&ucirc;te<\/a> terrestre dus au d&eacute;placement le long de failles. Souvent, cette <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;D&Eacute;FORMATION&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Changements &agrave; la surface d&amp;#039;un volcan qui se produisent en raison du mouvement du magma sous la surface. La plupart des d&eacute;formations volcaniques ne peuvent &ecirc;tre d&eacute;tect&eacute;es et mesur&eacute;es qu&amp;#039;&agrave; l&amp;#039;aide de techniques d&amp;#039;arpentage pr&eacute;cises telles qu&amp;#039;un syst&egrave;me de positionnement mondial (GPS), un tiltm&egrave;tre, un radar d&amp;#039;ouverture synth&eacute;tique interf&eacute;rom&eacute;trique (InSAR) ou un distancem&egrave;tre &eacute;lectronique (EDM).&lt;\/div&gt;\" href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/deformation-fr\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">d&eacute;formation<\/a> est de tr&egrave;s faible amplitude (quelques centim&egrave;tres ou moins) et ne peut donc &ecirc;tre d&eacute;tect&eacute;e et <a title=\"60% DES VOLCANS ACTIFS N'ONT PAS DE SYST&Egrave;ME DE SURVEILLANCE\" href=\"http:\/\/volcanx.cluster031.hosting.ovh.net\/fr\/most-of-active-volcanoes-have-no-monitoring-system\/\">surveill&eacute;e<\/a> qu&rsquo;avec des instruments tr&egrave;s sensibles.<\/p>\n<\/div><\/section><br>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1be8acw-edad6df5b24231d2c407a1b98d1fe3f4\">\n#top .hr.hr-invisible.av-1be8acw-edad6df5b24231d2c407a1b98d1fe3f4{\nheight:20px;\n}\n<\/style>\n<div class=\"hr av-1be8acw-edad6df5b24231d2c407a1b98d1fe3f4 hr-invisible  avia-builder-el-15  el_after_av_textblock  el_before_av_textblock \"><span class=\"hr-inner \"><span class=\"hr-inner-style\"><\/span><\/span><\/div><br>\n<section class=\"av_textblock_section av-kqterpr6-f6dbcd07f29ed0b44fd4c06a6ac45a70 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><h3>Comment la d&eacute;formation est-elle surveill&eacute;e?<\/h3>\n<p>Le <a href=\"http:\/\/www.usgs.gov\">Programme sur les risques volcaniques<\/a> installe et entretient des r&eacute;seaux d&rsquo;instruments autour des volcans pour surveiller les changements de la surface de la Terre au fil du temps. Les mesures au sol sont effectu&eacute;es en des points sp&eacute;cifiques de la surface terrestre &agrave; l&rsquo;aide de <strong>r&eacute;cepteurs GPS (Global Positioning System)<\/strong>. Les observations spatiales sur de grandes surfaces sont r&eacute;alis&eacute;es &agrave; l&rsquo;aide de technologies satellitaires telles que <strong>InSAR<\/strong>. En combinant ces donn&eacute;es avec d&rsquo;autres techniques de surveillance (observations g&eacute;ologiques, d&eacute;tection des tremblements de terre et des gaz), les scientifiques peuvent mieux comprendre <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> qui se passe sous le sol, savoir quand un volcan se comporte hors &laquo;&nbsp;contexte&nbsp;&raquo; et donner l&rsquo;alerte quand un volcan montre des signes d&rsquo;&eacute;ruption.<\/p>\n<\/div><\/section><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1iz7j36-2c9786a9f3f90bd1396461500bfb925f\">\n.flex_column.av-1iz7j36-2c9786a9f3f90bd1396461500bfb925f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class=\"flex_column av-1iz7j36-2c9786a9f3f90bd1396461500bfb925f av_two_fifth  avia-builder-el-17  el_after_av_three_fifth  avia-builder-el-last  flex_column_div av-zero-column-padding  \"><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kqtcpnnn-329ee0e429fb15c3bf2ed09192413b0f\">\n.avia-image-container.av-kqtcpnnn-329ee0e429fb15c3bf2ed09192413b0f img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-kqtcpnnn-329ee0e429fb15c3bf2ed09192413b0f .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<\/p><div class=\"avia-image-container av-kqtcpnnn-329ee0e429fb15c3bf2ed09192413b0f av-styling- avia-align-center  avia-builder-el-18  el_before_av_textblock  avia-builder-el-first \" 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-11599 avia-img-lazy-loading-not-11599 avia_image \" src=\"https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/bulge-mount-st-helens.jpg\" alt=\"\" title=\"bulge-mount-st-helens\" height=\"757\" width=\"1140\" itemprop=\"thumbnailUrl\" srcset=\"https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/bulge-mount-st-helens.jpg 1140w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/bulge-mount-st-helens-300x199.jpg 300w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/bulge-mount-st-helens-1030x684.jpg 1030w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/bulge-mount-st-helens-768x510.jpg 768w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/bulge-mount-st-helens-705x468.jpg 705w\" sizes=\"(max-width: 1140px) 100vw, 1140px\"\/><\/div><\/div><\/div><br>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kqtcpuh7-d8db4528b4900c045b62972c54904769\">\n#top .av_textblock_section.av-kqtcpuh7-d8db4528b4900c045b62972c54904769 .avia_textblock{\nfont-size:14px;\n}\n<\/style>\n<section class=\"av_textblock_section av-kqtcpuh7-d8db4528b4900c045b62972c54904769 \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><p><em>Un bombement sur le c&ocirc;t&eacute; nord du mont Saint Helens s&rsquo;est d&eacute;velopp&eacute; lorsque le <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;MAGMA&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Roche fondue sous la surface de la Terre.&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/magma-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>magma<\/a> a pouss&eacute; &agrave; l&rsquo;int&eacute;rieur du pic avant le 18 mai 1980. Vue du nord-est.<\/em><\/p>\n<\/div><\/section><br>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-14hay76-b9bade6c53b94b7d00ae79f4a86820fd\">\n#top .hr.hr-invisible.av-14hay76-b9bade6c53b94b7d00ae79f4a86820fd{\nheight:30px;\n}\n<\/style>\n<div class=\"hr av-14hay76-b9bade6c53b94b7d00ae79f4a86820fd hr-invisible  avia-builder-el-20  el_after_av_textblock  el_before_av_image \"><span class=\"hr-inner \"><span class=\"hr-inner-style\"><\/span><\/span><\/div><br>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kqte8z1i-9571bfcbe98b6de87f75a18e8bef9919\">\n.avia-image-container.av-kqte8z1i-9571bfcbe98b6de87f75a18e8bef9919 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-kqte8z1i-9571bfcbe98b6de87f75a18e8bef9919 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div class=\"avia-image-container av-kqte8z1i-9571bfcbe98b6de87f75a18e8bef9919 av-styling- avia-align-center  avia-builder-el-21  el_after_av_hr  el_before_av_textblock \" 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-11603 avia-img-lazy-loading-not-11603 avia_image \" src=\"https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/temporary-gps-station-three-sisters.jpg\" alt=\"\" title=\"temporary-gps-station-three-sisters\" height=\"855\" width=\"1140\" itemprop=\"thumbnailUrl\" srcset=\"https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/temporary-gps-station-three-sisters.jpg 1140w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/temporary-gps-station-three-sisters-300x225.jpg 300w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/temporary-gps-station-three-sisters-1030x773.jpg 1030w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/temporary-gps-station-three-sisters-768x576.jpg 768w, https:\/\/volcanofoundation.org\/wp-content\/uploads\/2021\/07\/temporary-gps-station-three-sisters-705x529.jpg 705w\" sizes=\"(max-width: 1140px) 100vw, 1140px\"\/><\/div><\/div><\/div><br>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kqte9kjf-e9bd2fbd3f9a53efca04f8d49e32eaaa\">\n#top .av_textblock_section.av-kqte9kjf-e9bd2fbd3f9a53efca04f8d49e32eaaa .avia_textblock{\nfont-size:14px;\n}\n<\/style>\n<section class=\"av_textblock_section av-kqte9kjf-e9bd2fbd3f9a53efca04f8d49e32eaaa \" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\"><div class=\"avia_textblock\" itemprop=\"text\"><p><em>Des stations GPS temporaires collectent des donn&eacute;es pour analyser la <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;D&Eacute;FORMATION&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Changements &agrave; la surface d&amp;#039;un volcan qui se produisent en raison du mouvement du magma sous la surface. La plupart des d&eacute;formations volcaniques ne peuvent &ecirc;tre d&eacute;tect&eacute;es et mesur&eacute;es qu&amp;#039;&agrave; l&amp;#039;aide de techniques d&amp;#039;arpentage pr&eacute;cises telles qu&amp;#039;un syst&egrave;me de positionnement mondial (GPS), un tiltm&egrave;tre, un radar d&amp;#039;ouverture synth&eacute;tique interf&eacute;rom&eacute;trique (InSAR) ou un distancem&egrave;tre &eacute;lectronique (EDM).&lt;\/div&gt;\" href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/deformation-fr\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">d&eacute;formation<\/a> de la zone &agrave; Three Sisters, Oregon.<\/em><\/p>\n<\/div><\/section><br>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-q980xc-50f7dd054b06f60518f9b118b6077c50\">\n#top .hr.hr-invisible.av-q980xc-50f7dd054b06f60518f9b118b6077c50{\nheight:30px;\n}\n<\/style>\n<div class=\"hr av-q980xc-50f7dd054b06f60518f9b118b6077c50 hr-invisible  avia-builder-el-23  el_after_av_textblock  avia-builder-el-last \"><span class=\"hr-inner \"><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/div>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Deformation monitoring has two complementary functions, real-time status and internal geometric modelling.<\/p>\n","protected":false},"author":8,"featured_media":11142,"parent":11396,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-11595","page","type-page","status-publish","has-post-thumbnail","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/volcanofoundation.org\/fr\/wp-json\/wp\/v2\/pages\/11595","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/volcanofoundation.org\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/volcanofoundation.org\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/volcanofoundation.org\/fr\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/volcanofoundation.org\/fr\/wp-json\/wp\/v2\/comments?post=11595"}],"version-history":[{"count":0,"href":"https:\/\/volcanofoundation.org\/fr\/wp-json\/wp\/v2\/pages\/11595\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/volcanofoundation.org\/fr\/wp-json\/wp\/v2\/pages\/11396"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/volcanofoundation.org\/fr\/wp-json\/wp\/v2\/media\/11142"}],"wp:attachment":[{"href":"https:\/\/volcanofoundation.org\/fr\/wp-json\/wp\/v2\/media?parent=11595"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}