{"id":69,"date":"2026-07-24T18:11:11","date_gmt":"2026-07-24T16:11:11","guid":{"rendered":"https:\/\/veilleursduclimat.ovh\/oghm\/?page_id=69"},"modified":"2026-07-29T15:52:36","modified_gmt":"2026-07-29T13:52:36","slug":"evolution-des-glaciers-depuis-1860","status":"publish","type":"page","link":"https:\/\/veilleursduclimat.ovh\/oghm\/resultats\/evolution-des-glaciers-depuis-1860\/","title":{"rendered":"\u00c9volution des glaciers depuis 1860"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Le recul depuis la fin du Petit \u00c2ge Glaciaire en Haute Maurienne peut \u00eatre reconstituer en compilant diff\u00e9rentes sources de donn\u00e9es : <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Relev\u00e9s g\u00e9omorphologiques (<strong>reconstitution du dernier maximum du Petit \u00c2ge Glaciaire<\/strong>, 1860)<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"772\" src=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-geomorphologique-evettes-1024x772.jpg\" alt=\"\" class=\"wp-image-77\" srcset=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-geomorphologique-evettes-1024x772.jpg 1024w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-geomorphologique-evettes-300x226.jpg 300w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-geomorphologique-evettes-768x579.jpg 768w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-geomorphologique-evettes.jpg 1353w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Carte g\u00e9omorphologique du glacier des Evettes<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>photos historiques <\/strong>(ann\u00e9es 1900)<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cartes<\/strong> (1850, 1903, 1968, 2006)<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"423\" height=\"404\" src=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-etat-major-1860-baounet.jpg\" alt=\"\" class=\"wp-image-75\" srcset=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-etat-major-1860-baounet.jpg 423w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-etat-major-1860-baounet-300x287.jpg 300w\" sizes=\"auto, (max-width: 423px) 100vw, 423px\" \/><figcaption class=\"wp-element-caption\">Carte d&rsquo;Etat Major lev\u00e9e en 1863. <\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Photos a\u00e9riennes \u00ab\u00a0historiques\u00a0\u00bb orthorectifi\u00e9es (1939 \u00e0 2022) de l&rsquo;IGN, <strong>BD ORTHO<\/strong><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"846\" height=\"647\" src=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/orthophoto-IGN-baounet-2024.jpg\" alt=\"\" class=\"wp-image-76\" srcset=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/orthophoto-IGN-baounet-2024.jpg 846w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/orthophoto-IGN-baounet-2024-300x229.jpg 300w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/orthophoto-IGN-baounet-2024-768x587.jpg 768w\" sizes=\"auto, (max-width: 846px) 100vw, 846px\" \/><figcaption class=\"wp-element-caption\">Orthophotographie a\u00e9rienne du glacier du Baounet en 2024 (source IGN, BD ORTHO)<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sc\u00e8nes satellite Landsat (NASA) <\/strong>(1995 \u2013 actuel)<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sc\u00e8nes satellite Sentinel 2A et 2B (ESA-Copernicus) <\/strong>(2015-actuel)<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"846\" height=\"634\" src=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/scene-sentinel2-septembre-2025.jpg\" alt=\"\" class=\"wp-image-78\" srcset=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/scene-sentinel2-septembre-2025.jpg 846w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/scene-sentinel2-septembre-2025-300x225.jpg 300w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/scene-sentinel2-septembre-2025-768x576.jpg 768w\" sizes=\"auto, (max-width: 846px) 100vw, 846px\" \/><figcaption class=\"wp-element-caption\">Sc\u00e8ne satellite Sentinel 2 (composition color\u00e9e en fausse couleurs visibles). Source : ESA-Copernicus<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LiDAR<\/strong> (IGN en 2022) <\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"848\" height=\"635\" src=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/lidar-glacier-baounet-ign-2022.jpg\" alt=\"\" class=\"wp-image-79\" srcset=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/lidar-glacier-baounet-ign-2022.jpg 848w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/lidar-glacier-baounet-ign-2022-300x225.jpg 300w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/lidar-glacier-baounet-ign-2022-768x575.jpg 768w\" sizes=\"auto, (max-width: 848px) 100vw, 848px\" \/><figcaption class=\"wp-element-caption\">Vue en ombrage d&rsquo;un mod\u00e8le num\u00e9rique de terrain acquis par LiDAR (IGN, 2022) <\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le suivi de l\u2019extension des glaciers \u00e0 l\u2019\u00e9chelle du bassin versant permet de mettre en perspective les \u00e9volutions climatiques\u00a0 et les modifications du r\u00e9gime des cours d\u2019eau<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2026 mais \u2026<\/strong> <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Il ne permet pas de faire un lien quantitatif avec le climat (n\u00e9cessite d\u2019utiliser d\u2019autres indicateurs comme le bilan de masse)<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"721\" src=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-extension-glacier-baounet-1024x721.jpg\" alt=\"\" class=\"wp-image-71\" srcset=\"https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-extension-glacier-baounet-1024x721.jpg 1024w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-extension-glacier-baounet-300x211.jpg 300w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-extension-glacier-baounet-768x541.jpg 768w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-extension-glacier-baounet-1536x1082.jpg 1536w, https:\/\/veilleursduclimat.ovh\/oghm\/wp-content\/uploads\/sites\/2\/2026\/07\/carte-extension-glacier-baounet-2048x1443.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Extension du glacier du Baounet des ann\u00e9es 1850 \u00e0 nos jours <\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le recul depuis la fin du Petit \u00c2ge Glaciaire en Haute Maurienne peut \u00eatre reconstituer en compilant diff\u00e9rentes sources de donn\u00e9es : Le suivi de l\u2019extension des glaciers \u00e0 l\u2019\u00e9chelle du bassin versant permet de mettre en perspective les \u00e9volutions climatiques\u00a0 et les modifications du r\u00e9gime des cours d\u2019eau \u2026 mais \u2026 Il ne permet &#8230; <a title=\"\u00c9volution des glaciers depuis 1860\" class=\"read-more\" href=\"https:\/\/veilleursduclimat.ovh\/oghm\/resultats\/evolution-des-glaciers-depuis-1860\/\" aria-label=\"En savoir plus sur \u00c9volution des glaciers depuis 1860\">Lire la suite<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":98,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-69","page","type-page","status-publish"],"_links":{"self":[{"href":"https:\/\/veilleursduclimat.ovh\/oghm\/wp-json\/wp\/v2\/pages\/69","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/veilleursduclimat.ovh\/oghm\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/veilleursduclimat.ovh\/oghm\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/veilleursduclimat.ovh\/oghm\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/veilleursduclimat.ovh\/oghm\/wp-json\/wp\/v2\/comments?post=69"}],"version-history":[{"count":1,"href":"https:\/\/veilleursduclimat.ovh\/oghm\/wp-json\/wp\/v2\/pages\/69\/revisions"}],"predecessor-version":[{"id":81,"href":"https:\/\/veilleursduclimat.ovh\/oghm\/wp-json\/wp\/v2\/pages\/69\/revisions\/81"}],"up":[{"embeddable":true,"href":"https:\/\/veilleursduclimat.ovh\/oghm\/wp-json\/wp\/v2\/pages\/98"}],"wp:attachment":[{"href":"https:\/\/veilleursduclimat.ovh\/oghm\/wp-json\/wp\/v2\/media?parent=69"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}