{"id":13989,"date":"2023-01-10T08:51:32","date_gmt":"2023-01-10T07:51:32","guid":{"rendered":"https:\/\/www.cerege.fr\/?page_id=13989"},"modified":"2023-01-12T10:28:05","modified_gmt":"2023-01-12T09:28:05","slug":"applications-de-lunite-de-geochimie-des-glaces-polaires","status":"publish","type":"page","link":"https:\/\/www.cerege.fr\/fr\/equipements\/poles-techniques\/geochimie-organique-inorganique-et-isotopique-2\/unite-de-geochimie-des-glaces-polaires\/applications-de-lunite-de-geochimie-des-glaces-polaires\/","title":{"rendered":"Applications de l&#8217;Unit\u00e9 de g\u00e9ochimie des glaces polaires"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"13989\" class=\"elementor elementor-13989\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3b1fceab elementor-section-full_width elementor-section-height-min-height elementor-section-height-default elementor-section-items-middle\" data-id=\"3b1fceab\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7e326765\" data-id=\"7e326765\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-50fb84bf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"50fb84bf\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2b9e7f87\" data-id=\"2b9e7f87\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2d2e93e1 elementor-widget elementor-widget-shortcode\" data-id=\"2d2e93e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><nav aria-label=\"breadcrumbs\">\n            <div class=\"breadcrumb-container theme1\">\n                <ol>\n                                    <\/ol>\n            <\/div>\n        <\/nav>    <script type=\"application\/ld+json\">\n        {\n            \"@context\": \"http:\/\/schema.org\",\n            \"@type\": \"BreadcrumbList\",\n            \"itemListElement\": [\n                            ]\n        }\n    <\/script>\n   \n    <script>\n            <\/script>\n<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-73b97775 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"73b97775\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-wide\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-42332e0e\" data-id=\"42332e0e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-62d0d0af elementor-widget elementor-widget-text-editor\" data-id=\"62d0d0af\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: justify;\">Les enregistrements de nucl\u00e9ides cosmog\u00e9niques du 10Be et de 36Cl dans les archives glaciaires fournissent des informations sur\u00a0:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-239bdafd elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"239bdafd\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-extended\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-65a13bf1\" data-id=\"65a13bf1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-76720881 elementor-widget elementor-widget-image\" data-id=\"76720881\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"646\" src=\"https:\/\/www.cerege.fr\/wp-content\/uploads\/2023\/01\/Site_antarctique-1024x827.png\" class=\"attachment-large size-large wp-image-15249\" alt=\"\" srcset=\"https:\/\/www.cerege.fr\/wp-content\/uploads\/2023\/01\/Site_antarctique-1024x827.png 1024w, https:\/\/www.cerege.fr\/wp-content\/uploads\/2023\/01\/Site_antarctique-300x242.png 300w, https:\/\/www.cerege.fr\/wp-content\/uploads\/2023\/01\/Site_antarctique-768x620.png 768w, https:\/\/www.cerege.fr\/wp-content\/uploads\/2023\/01\/Site_antarctique-15x12.png 15w, https:\/\/www.cerege.fr\/wp-content\/uploads\/2023\/01\/Site_antarctique.png 1120w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-39f7e792\" data-id=\"39f7e792\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-225a4063 elementor-widget elementor-widget-heading\" data-id=\"225a4063\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">La variabilit\u00e9 de l\u2019activit\u00e9 solaire<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-306bc61 elementor-widget elementor-widget-text-editor\" data-id=\"306bc61\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>au cours des derniers mill\u00e9naires \u00e0 tr\u00e8s haute r\u00e9solution \u00e0 partir de carottes de glace de l\u2019Antarctique (Baroni et al. 2011, 2019). Les enregistrements de <sup>10<\/sup>Be peuvent \u00eatre compar\u00e9s avec les donn\u00e9es de <sup>14<\/sup>C des cernes d\u2019arbres (Bard et al. 1997, Delaygue &amp; Bard 2011). En parall\u00e8le, des travaux de mod\u00e9lisation sont conduits pour reconstituer le for\u00e7age solaire pass\u00e9 (Bard et al. 2000, Delaygue &amp; Bard 2011, Schmidt et al. 2011, 2012, Jungclaus et al., 2017, Wu et al., 2018). Nos reconstitutions du for\u00e7age solaire ont servi pour la comparaison des mod\u00e8les climatiques (CMIP et PMIP) dont les simulations ont \u00e9t\u00e9 compil\u00e9es dans les rapports du GIEC (IPCC AR4, 5 et 6). <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7af2162f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7af2162f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-21807e37\" data-id=\"21807e37\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-3465d502\" data-id=\"3465d502\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-369183db elementor-widget elementor-widget-heading\" data-id=\"369183db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Le for\u00e7age volcanique<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3280529d elementor-widget elementor-widget-text-editor\" data-id=\"3280529d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>gr\u00e2ce \u00e0 l\u2019identification de pics de concentration de <sup>10<\/sup>Be synchrones avec des pics de sulfate qui apparaissent lorsque les gaz \u00e9mis par un volcan atteignent la stratosph\u00e8re c\u2019est-\u00e0-dire une altitude sup\u00e9rieure \u00e0 10km environ (Baroni et al. 2011, 2019). Ces \u00e9ruptions volcaniques stratosph\u00e9riques peuvent avoir un impact climatique important contrairement aux \u00e9ruptions troposph\u00e9riques de plus basse altitude.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-673c1e1d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"673c1e1d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6b647738\" data-id=\"6b647738\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-2ffced54\" data-id=\"2ffced54\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6980fe22 elementor-widget elementor-widget-heading\" data-id=\"6980fe22\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Les variations du champ magn\u00e9tique terrestre \n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-623da24a elementor-widget elementor-widget-text-editor\" data-id=\"623da24a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>et plus particuli\u00e8rement les excursions g\u00e9omagn\u00e9tiques enregistr\u00e9es dans le forage de D\u00f4me Talos telle que l\u2019excursion de Laschamp qui s\u2019est produite il y a 41 000 ans environ. Ces donn\u00e9es sont ensuite compar\u00e9es avec les enregistrements marins de <sup>10<\/sup>Be et d\u2019intensit\u00e9 g\u00e9omagn\u00e9tique. Il s\u2019agit \u00e9galement d\u2019un outil tr\u00e8s utilis\u00e9 pour dater les archives glaciaires.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-21ff284 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"21ff284\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6b4fb797\" data-id=\"6b4fb797\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-762c0b9c\" data-id=\"762c0b9c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7e933839 elementor-widget elementor-widget-heading\" data-id=\"7e933839\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">L\u2019\u00e2ge de la glace <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1fdd8d2 elementor-widget elementor-widget-text-editor\" data-id=\"1fdd8d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>glace qui peut \u00eatre d\u00e9duit du rapport isotopique <sup>36<\/sup>Cl\/<sup>10<\/sup>Be gr\u00e2ce au principe de la d\u00e9croissance radioactive. Cet outil de datation sera utilis\u00e9 dans le cadre de l\u2019ANR ToBE et du projet europ\u00e9en H2020 Beyond EPICA-Oldest Ice qui vise \u00e0 obtenir la glace la plus vieille au monde, de plus d\u2019un million d\u2019ann\u00e9es, qui est actuellement en train d\u2019\u00eatre for\u00e9e \u00e0 quelques dizaines de km de la station de D\u00f4me C \u2013 Concordia, en Antarctique.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-22c693b9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"22c693b9\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-1483b8df\" data-id=\"1483b8df\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-8a1860c\" data-id=\"8a1860c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-45eb3040 elementor-widget elementor-widget-heading\" data-id=\"45eb3040\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">L\u2019empreinte anthropique \n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3df4c8ea elementor-widget elementor-widget-text-editor\" data-id=\"3df4c8ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>laiss\u00e9e par les essais nucl\u00e9aires des ann\u00e9es 1950 \u00e0 1970 dans le signal de <sup>36<\/sup>Cl (Pivot et al., 2019). Ces \u00e9v\u00e9nements sont tr\u00e8s facilement identifiables parce qu\u2019ils surpassent sans ambigu\u00eft\u00e9 le signal naturel de <sup>36<\/sup>Cl, ils peuvent \u00eatre utilis\u00e9s pour dater mais ils permettent \u00e9galement de mieux comprendre les modes de transport et de d\u00e9p\u00f4t depuis l\u2019atmosph\u00e8re vers les calottes de glace.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-62574ab elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"62574ab\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-ec8888b\" data-id=\"ec8888b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-e4ae3b8\" data-id=\"e4ae3b8\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6053530 elementor-widget elementor-widget-heading\" data-id=\"6053530\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Stations d'Antartique<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3752a8d elementor-widget elementor-widget-text-editor\" data-id=\"3752a8d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Les \u00e9chantillons de neige et de glace \u00e9tudi\u00e9s au CEREGE proviennent exclusivement d\u2019Antarctique et plus particuli\u00e8rement des stations suivantes :\u2028<\/p><ul><li>D\u00f4me Talos : (72\u00b0S47\u2019S, 159\u00b05\u2019\u00b0E, altitude 2316 m, temp\u00e9rature annuelle -41\u00baC), base italienne situ\u00e9e du c\u00f4t\u00e9 ouest de la mer de Ross \u00e0 l\u2019Est du Haut Plateau Antarctique. Dans le cadre du programme de forage europ\u00e9en TALDICE, une carotte de glace de 1620 m couvrant 200 000 ans approximativement, a \u00e9t\u00e9 pr\u00e9lev\u00e9e (Stenni et al. 2011).<br \/>\u2028<\/li><li>D\u00f4me C (75\u00b0S, 123\u00b0E, altitude 3240 m, temp\u00e9rature annuelle -54.5\u00baC), base franco-italienne situ\u00e9e sur le Haut Plateau Antarctique. Le projet VOLSOL financ\u00e9 par l\u2019ANR de 2009 \u00e0 2014 (ANR-09-BLAN-0003-01), a permis forer 6 carottes de glace de 100 m dont une est enti\u00e8rement au CEREGE. Ce forage couvre un peu plus de 2000 ans.\u2028<br \/><br \/><\/li><li>Divers sites tels que Vostok, S2, Aurora Basin North pour des collectes de puits de neige de 2 \u00e0 6 m de profondeur et couvrant les derni\u00e8res d\u00e9cennies (projet VANISH\u2013ANR-07-VULN-013 et le projet europ\u00e9en ERC Combiniso).<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2a9d548e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2a9d548e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-219dca97\" data-id=\"219dca97\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-658cd795\" data-id=\"658cd795\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1a416e4 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1a416e4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6510554d elementor-widget elementor-widget-heading\" data-id=\"6510554d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">R\u00e9f\u00e9rences de l\u2019unit\u00e9 de g\u00e9ochimie des glaces polaires<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e019cf8 elementor-widget elementor-widget-text-editor\" data-id=\"3e019cf8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>2020<\/p><p>Servettaz APM, Orsi AJ, Curran MAJ, Moy AD, Landais A, Agosta C, Winton VHL, Touzeau A, McConnell JR, Werner M, Baroni M. Snowfall and Water Stable Isotope Variability in East Antarctica Controlled by Warm Synoptic Events. <em>Journal of Geophysical Research: Atmospheres.<\/em> 125 (17), e2020JD032863, DOI: 10.1029\/2020JD032863 (2020).<\/p><p>2019<\/p><p>Pivot S, Baroni M, Bard E, Giraud X, ASTER Team A comparison of <sup>36<\/sup>Cl nuclear bomb inputs deposited in snow from Vostok and Talos Dome, Antarctica, using the <sup>36<\/sup>Cl\/Cl<sup>\u2010<\/sup> ratio. <em>Journal of Geophysical Research <\/em>124 (20), 10973-10988, DOI: 10.1029\/2018JD030200 (2019).<\/p><p>Baroni M, Bard E, Jean\u2010Robert Petit JR, Viseur S, ASTER Team, Persistent draining of the stratospheric <sup>10<\/sup>Be reservoir after the Samalas volcanic eruption (1257 CE). <em>Journal of Geophysical Research <\/em>124 (13), 7082-7097, DOI: 10.1029\/2018JD029823 (2019).<\/p><p>Keddadouche K, Braucher R, Bourl\u00e8s DL, Baroni M, Guillou V, L\u00e9anni L, Auma\u00eetre G. Design and performance of an automated chemical extraction bench for the preparation of 10Be and 26Al targets to be analyzed by accelerator mass spectrometry. <em>Nuclear Instruments and Methods in Physics Research Section B: <\/em>456, 230-235, DOI: 10.1016\/j.nimb.2019.04.002 (2019).<\/p><p>O&#8217;Hare P, Mekhaldi F, Adolphi F, Raisbeck G, Aldahan A, Anderberg E, Beer J, Christl M, Fahrni S, Synal H-A, Park J, Possnert G, Southon J, Bard E, ASTER Team, Muscheler R. Multiradionuclide evidence for an extreme solar proton event around 2610 BP (\u2248 660 BC). <em>Proceedings of the National Academy of Sciences<\/em> 116, 5961\u20135966, + 5 p. suppl., DOI: 10.1073\/pnas.1815725116 (2019).<\/p><p>Delmonte B, Winton H, Baroni M, Baccolo G, Hansson M, Andersson P, Baroni C, Salvatore MC, Lanci L, Maggi V. Holocene dust in East Antarctica: Provenance and variability in time and space. <em>The Holocene<\/em> 30 (4), DOI: 10.1177\/0959683619875188 (2019).<\/p><p>2018<\/p><p>Wu CJ, Usoskin IG, Krivova N, Kovaltsov GA, Baroni M, Bard E, Solanki SK. Solar activity over nine millennia: A consistent multi-proxy reconstruction. <em>Astronomy &amp; Astrophysics<\/em> 615, A93, 1-13, DOI: 10.1051\/0004-6361\/201731892 (2018).<\/p><p>Braucher R, Keddadouche K, Auma\u00eetre G, Bourl\u00e8s DL, Arnold M, Pivot S, Baroni M, Scharf A, Rugel G, Bard E. Chlorine measurements at the 5MV French AMS national facility ASTER: Associated external uncertainties and comparability with the 6MV DREAMS facility. <em>Nuclear Instruments and Methods in Physics Research B<\/em> 420, 40-45, DOI: 10.1016\/j.nimb.2018.01.025 (2018).<\/p><p>2017<\/p><p>Jungclaus JH, Bard E, Baroni M, Braconnot P, Cao J, Chini LP, Egorova T, Evans M, Gonz\u00e1lez-Rouco JF, Goosse H, Hurtt GC, Joos F, Kaplan JO, Khodri M, Klein Goldewijk K, Krivova N, LeGrande AN, Lorenz SJ, Luterbacher J, Man W, Maycock AC, Meinshausen M, Moberg A, Muscheler M, Nehrbass-Ahles C, Otto-Bliesner BI, Phipps SJ, Pongratz J, Rozanov E, Schmidt GA, Schmidt H, Schmutz W, Schurer A, Shapiro AI, Sigl M, Smerdon JE, Solanki SK, Timmreck C, Toohey M, Usoskin IG, Wagner S, Wu CJ, Yeo KL, Zanchettin D, Zhang Q, Zorita E. The PMIP4 contribution to CMIP6 &#8211; Part 3: The Last Millennium, Scientific Objective and Experimental Design for the PMIP4 past1000 simulations. <em>Geoscientific Model Development <\/em>10 (11), 4005-4033, DOI: 10.5194\/gmd-10-4005-2017 (2017).<\/p><p>2016<\/p><p>Touzeau A, Landais A, Stenni B, Uemera R, Fukui K, Guilbaud S, Ekaykin A, Casado M, Barkan E, Luz B, Magand O, Teste G, Le Meur E, Baroni M, Savarino J, Bourgeois I, Risi C. Acquisition of isotopic composition for surface snow in East Antarctica and the links to climatic parameters, <em>The Cryosphere<\/em> 10, 837-852, DOI: 10.5194\/tc-10-837-2016 (2016).<\/p><p>2015<\/p><p>Delaygue G, Bekki S, Bard E, Modelling the stratospheric budget of beryllium isotopes. <em>Tellus <\/em>B 67, 28582, 1-16, DOI: 10.3402\/tellusb.v67.28582 (2015).<\/p><p>Cauquoin A, Landais A, Raisbeck GM, Jouzel J, Bazin L, Kageyama M, Peterschmitt JY, Werner M, Bard E, ASTER Team. Comparing past accumulation rate reconstructions in East Antarctic ice cores using <sup>10<\/sup>Be, water isotopes and CMIP5-PMIP3 models. <em>Climate of the Past <\/em>11, 355-367, DOI: 10.5194\/cp-11-355-2015 (2015).<\/p><p>2014<\/p><p>Cauquoin A, Raisbeck GM, Jouzel J, Bard E, ASTER Team. No evidence for planetary influence on solar activity 330 ka ago. <em>Astronomy &amp; Astrophysics<\/em> 561, A132, 1-5, DOI: 10.1051\/0004-6361\/201322879, (2014).<\/p><p>2013<\/p><p>Winkler R, Landais A, Risi C, Baroni M, Ekaykin A, Jouzel J, Petit JR, Prie F, Minster B, Falourd S. Interannual variation of water isotopologues at Vostok indicates a contribution from stratospheric water vapor. <em>Proceedings of the National Academy of Sciences<\/em> 110, 17674\u201317679, DOI: 10.1073\/pnas.1215209110, (2013).<\/p><p>2012<\/p><p>Schmidt GA, Jungclaus JH, Ammann CM, Bard E,\u00a0Braconnot P, Crowley TJ, Delaygue G, Joos F,\u00a0Krivova NA, Muscheler R, Otto-Bliesner BL, Pongratz J, Shindell DT, Solanki SK, Steinhilber F, Vieira LEA.\u00a0Climate forcing reconstructions for use in PMIP\u00a0simulations of the Last Millennium (v1.1). <em>Geoscientific Model Development<\/em> 5, 185-191, DOI: 10.5194\/gmd-5-185-2012, (2012).<\/p><p>2011<\/p><p>Baroni M, Bard E, Petit JR, Magand O, Bourl\u00e8s D. Volcanic, solar activity, and atmospheric circulation influences on cosmogenic <sup>10<\/sup>Be fallout at Vostok and Concordia (Antarctica) over the last 60 years. <em>Geochimica et Cosmochimica Acta <\/em>71, 7132-7145, DOI: 10.1016\/j.gca.2011.09.002, (2011).<\/p><p>Schmidt GA, Jungclaus JH, Ammann CM, Bard E,\u00a0Braconnot P, Crowley TJ, Delaygue G, Joos F,\u00a0Krivova NA, Muscheler R, Otto-Bliesner BL, Pongratz J, Shindell DT, Solanki SK, Steinhilber F, Vieira LEA.\u00a0Climate forcing reconstructions for use in PMIP\u00a0simulations of the Last Millennium (v1.0). <em>Geoscientific Model Development<\/em> 4, 33-45, DOI: 10.5194\/gmd-4-33-2011, (2011).<\/p><p>Stenni B, Buiron D, Frezzotti M, Albani S, Barbante C, Bard E, Barnola JM, Baroni M, Baumgartner M, Bonazza M, Capron E, Castellano E, Chappellaz J, Delmonte B, Falourd S, Genoni L, Iacumin P, Jouzel J, Kipfstuhl S, Landais A, Lemieux-Dudon B, Maggi V, Masson-Delmotte V, Mazzola C, Minster B, Montagnat M, Mulvaney R, Narcisi B, Oerter H, Parrenin F, Petit JR, Ritz C, Scarchilli C, Schilt A, Sch\u00fcpbach S, Schwander J, Selmo E, Severi M, Stocker TF, Udisti U. Unified Antarctic and Greenland climate seesaw during the last deglaciation. <em>Nature Geoscience<\/em> 4<em>, <\/em>46-49 + 32 p. suppl., DOI: 10.1038\/NGEO1026, (2011).<\/p><p>Delaygue G, Bard E. An Antarctic view of beryllium-10 and solar activity for the past millennium. <em>Climate Dynamics<\/em> 36, 2201-2218, DOI:10.1007\/s00382-010-0795-1, (2011).<\/p><p>2009<\/p><p>Usoskin IG, Horiuchi K, Solanki S, Kovaltsov GA, Bard E. On the common solar signal in different cosmogenic isotope data sets. <em>Journal of Geophysical Research<\/em> 114, 1-14, DOI:10.1029\/2008JA013888, (2009).<\/p><p>2007<\/p><p>Bard E, Raisbeck G, Yiou F, Jouzel J. Comment on \u00ab\u00a0Solar activity during the last 1000 yr inferred from radionuclide records\u00a0\u00bb by Muscheler et al. (2007). <em>Quaternary Science Reviews<\/em> 26, 2301-2308, (2007).<\/p><p>2006<\/p><p>Bard E, Frank M. Climate change and solar variability: what&#8217;s new under the Sun. <em>Earth and Planetary Science Letters <\/em>248, 1-14, (2006).<\/p><p>2000<\/p><p>Bard E, Raisbeck G, Yiou F, Jouzel J Solar irradiance during the last 1200 yr based on cosmogenic nuclides. <em>Tellus B<\/em> 52, 985-992, (2000).<\/p><p>1997<\/p><p>Bard E. Nuclide production by cosmic rays during the Last Ice Age. <em>Science<\/em> 277, 532-533, (1997).<\/p><p>Bard E, Raisbeck G, Yiou F, Jouzel J Solar modulation of cosmogenic nuclide production over the last millennium: comparison between <sup>14<\/sup>C and <sup>10<\/sup>Be records. <em>Earth and Planetary Science Letters <\/em>150, 453-462, (1997).<\/p><p>1992<\/p><p>Raisbeck GM, Yiou F, Jouzel J, Petit JR, Barkov NI, Bard E. <sup>10<\/sup>Be deposition at Vostok, Antarctica, during the last 50,000 years and its relationship to possible cosmogenic production variations during this period. <em>In<\/em> Bard E &amp; Broecker WS eds: The Last Deglaciation: Absolute and Radiocarbon Chronologies, NATO ASI series, I vol 2. Springer Verlag, 127-140, (1992).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Les enregistrements de nucl\u00e9ides cosmog\u00e9niques du 10Be et de 36Cl dans les archives glaciaires fournissent des informations sur\u00a0: La variabilit\u00e9 de l\u2019activit\u00e9 solaire au cours des derniers mill\u00e9naires \u00e0 tr\u00e8s [&hellip;]<\/p>\n","protected":false},"author":551,"featured_media":13888,"parent":13976,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-13989","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"publishpress_future_action":{"enabled":false,"date":"2026-04-28 08:07:49","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/pages\/13989","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/users\/551"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/comments?post=13989"}],"version-history":[{"count":5,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/pages\/13989\/revisions"}],"predecessor-version":[{"id":15277,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/pages\/13989\/revisions\/15277"}],"up":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/pages\/13976"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/media\/13888"}],"wp:attachment":[{"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/media?parent=13989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}