{"id":4682,"date":"2018-01-22T08:53:55","date_gmt":"2018-01-22T07:53:55","guid":{"rendered":"https:\/\/wp_listic_old.lamp2020.local\/?p=4682"},"modified":"2020-06-10T17:54:56","modified_gmt":"2020-06-10T15:54:56","slug":"seminaire-30-janvier-2018-mont-blanc-haut","status":"publish","type":"post","link":"https:\/\/www.univ-smb.fr\/listic\/archive-actualites\/seminaire-30-janvier-2018-mont-blanc-haut\/","title":{"rendered":"30 Janvier 2018 : s\u00e9minaire, pourquoi le Mont Blanc est-il si haut ? \u00e0 13h30 en B120"},"content":{"rendered":"<p>J.L. Mugnier, directeur de recherche CNRS au laboratoire ISTerre (Chamb\u00e9ry-Grenoble) pr\u00e9sentera ses travaux sur l&rsquo;\u00e9tude des processus impactant l&rsquo;\u00e9volution des reliefs, en particulier sur le massif du Mont Blanc.<\/p>\n<p><span style=\"font-size: small\"><span style=\"font-family: Times New Roman,serif\"><span style=\"font-size: medium\">Le probl\u00e8me de l\u2019\u00e9volution morphologique d\u2019un massif englac\u00e9 se r\u00e9sume \u00e0 une comp\u00e9tition entre trois processus principaux\u00a0: la surrection (composante verticale des mouvements tectoniques), l\u2019\u00e9rosion qui se produit sous les glaciers et le recul des versants sous l&rsquo;effet des \u00e9croulements.<\/span><\/span><\/span><span style=\"font-family: Times New Roman,serif\"><span style=\"font-size: small\"><span style=\"font-size: medium\"> Dans cet expos\u00e9, nous nous proposons d\u2019\u00e9tudier <\/span><span style=\"font-size: medium\">l\u2019\u00e9volution du massif du Mont Blanc pour quantifier ces diff\u00e9rents processus durant la p\u00e9riode r\u00e9cente. Ce massif constitue en effet un site privil\u00e9gi\u00e9 pour \u00e9tudier l<\/span><span style=\"font-size: medium\">es interactions entre surrection, \u00e9rosion et climat<\/span><span style=\"font-size: medium\"> dans un contexte glaciaire car de nombreux <\/span><span style=\"font-size: medium\">r\u00e9sultats y ont \u00e9t\u00e9 acquis depuis<\/span><span style=\"font-size: medium\"> une dizaine d\u2019ann\u00e9es, en particulier dans le cadre de syst\u00e8mes observationnels.<\/span><\/span><span style=\"font-size: medium\"> L\u2019expos\u00e9 portera d\u2019abord sur une pr\u00e9sentation des processus \u00e0 prendre en compte dans l\u2019\u00e9volution du relief dans un contexte glaciaire et sur l\u2019\u00e9volution tectonique du Massif du Mont Blanc. Les valeurs des \u00e9rosions obtenues dans le massif du Mont Blanc seront ensuite compar\u00e9es avec celles obtenues dans d\u2019autres zones glaciaires<\/span><\/span><span style=\"font-family: Times New Roman,serif\"><span style=\"font-size: small\"><span style=\"font-size: medium\">. L\u2019\u00e9rosion des versants (li\u00e9e principalement aux \u00e9croulements) et celle sous-glaciaire seront ensuite estim\u00e9es en utilisant diff\u00e9rent marqueurs g\u00e9ochimiques (en particulier l\u2019isotope <\/span><sup><span style=\"font-size: medium\">10<\/span><\/sup><span style=\"font-size: medium\">Be). L\u2019influence du r\u00e9chauffement climatique sur les \u00e9croulements, les glaciers et les flux s\u00e9dimentaires sera enfin pr\u00e9sent\u00e9e.<\/span><\/span><span style=\"font-size: medium\"> La compilation de ces \u00e9tudes sugg\u00e8re que le relief local \u00e9volue peu alors que l\u2019altitude du Mont Blanc s\u2019accroit.<\/span><\/span><\/p>\n<div>\n<div id=\"zimbraEditorContainer\" class=\"1\">\n<div>\n<div>\n<div>\n<div>\n<div>\n<div>\n<div class=\"\">\n<div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>J.L. Mugnier, directeur de recherche CNRS au laboratoire ISTerre (Chamb\u00e9ry-Grenoble) pr\u00e9sentera ses travaux sur l&rsquo;\u00e9tude des processus impactant l&rsquo;\u00e9volution des reliefs, en particulier sur le massif du Mont Blanc. Le probl\u00e8me de l\u2019\u00e9volution morphologique d\u2019un [&hellip;]<\/p>\n","protected":false},"author":129,"featured_media":4691,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[19],"tags":[],"class_list":["post-4682","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archive-actualites"],"acf":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.univ-smb.fr\/listic\/wp-content\/uploads\/sites\/66\/2018\/01\/mtblanc2.jpg","_links":{"self":[{"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/posts\/4682","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/users\/129"}],"replies":[{"embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/comments?post=4682"}],"version-history":[{"count":2,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/posts\/4682\/revisions"}],"predecessor-version":[{"id":10774,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/posts\/4682\/revisions\/10774"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/media\/4691"}],"wp:attachment":[{"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/media?parent=4682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/categories?post=4682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.univ-smb.fr\/listic\/wp-json\/wp\/v2\/tags?post=4682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}