{"id":1471,"date":"2024-11-25T14:28:47","date_gmt":"2024-11-25T13:28:47","guid":{"rendered":"https:\/\/www.scouts-europe.org\/scoutorama\/?p=1471"},"modified":"2025-02-11T14:06:10","modified_gmt":"2025-02-11T13:06:10","slug":"convertir-un-azimuth-geographique-en-azimut-magnetique","status":"publish","type":"post","link":"https:\/\/www.scouts-europe.org\/scoutorama\/convertir-un-azimuth-geographique-en-azimut-magnetique\/","title":{"rendered":"Convertir un azimut g\u00e9ographique en azimut magn\u00e9tique"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1471\" class=\"elementor elementor-1471\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8041808 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8041808\" 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-7caf085\" data-id=\"7caf085\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-4eb47f7 elementor-widget elementor-widget-heading\" data-id=\"4eb47f7\" 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\">Convertir un azimut g\u00e9ographique en azimut magn\u00e9tique<\/h2>\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-721ab5e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"721ab5e\" 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-d46eb97\" data-id=\"d46eb97\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-c306bc5 elementor-widget elementor-widget-spacer\" data-id=\"c306bc5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\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-4f4c36d elementor-widget elementor-widget-text-editor\" data-id=\"4f4c36d\" 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<div id=\"chapo_article\"><div id=\"chapo_article li\"><p>Le Nord magn\u00e9tique (indiqu\u00e9 par l\u2019aiguille de la boussole) ne correspond pas exactement avec le Nord g\u00e9ographique (la direction du p\u00f4le Nord).<\/p><\/div><\/div>\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-eef63c4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"eef63c4\" 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-1a70d9b\" data-id=\"1a70d9b\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-ef6138f elementor-widget elementor-widget-text-editor\" data-id=\"ef6138f\" 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 class=\"spip\">Pour faire la conversion, cherchez d\u2019abord le figuratif que l\u2019on trouve sur le bord ou dans la l\u00e9gende des cartes au 1\/25 000e. Par exemple\u00a0:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-117d082 elementor-widget elementor-widget-image\" data-id=\"117d082\" 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 decoding=\"async\" width=\"144\" height=\"172\" src=\"https:\/\/www.scouts-europe.org\/scoutorama\/wp-content\/uploads\/sites\/99\/2024\/11\/131-dr-figuratif-1-a4919-1.gif\" class=\"attachment-large size-large wp-image-1473\" alt=\"131 dr figuratif 1 a4919 1\" \/>\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<div class=\"elementor-element elementor-element-11978c3 elementor-widget elementor-widget-spacer\" data-id=\"11978c3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\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-bf63773 elementor-widget elementor-widget-text-editor\" data-id=\"bf63773\" 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>La d\u00e9clinaison magn\u00e9tique de la carte correspond au centre de la feuille, au premier janvier 1979.<br class=\"manualbr\" \/>Elle diminue chaque ann\u00e9e de 0,07gr (0\u00b04\u2019).<\/p><p>A l\u2019aide de cette indication, on peut calculer la d\u00e9clinaison magn\u00e9tique \u00e0 prendre en compte\u00a0:<br class=\"manualbr\" \/>Ici, au 1er janvier 2001, la d\u00e9clinaison a diminu\u00e9 de\u00a0: 4 x 22 ans = 88\u2019 ) 1\u00b028\u2019<br class=\"manualbr\" \/>Elle vaut donc\u00a0: 5\u00b045\u2019 &#8211; 1\u00b028\u2019 = 4\u00b0 17\u2019<\/p><p>Sur une boussole, on peut se contenter d\u2019une pr\u00e9cision de 4\u00b0. (pour plus de d\u00e9tails, consulter\u00a0les conversions).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e166039 elementor-widget elementor-widget-spacer\" data-id=\"e166039\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\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-c89a51c elementor-widget elementor-widget-text-editor\" data-id=\"c89a51c\" 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>Ensuite, il faut se rappeler la d\u00e9finition des angles de marche\u00a0:<\/p><ul class=\"spip\"><li>L\u2019azimut magn\u00e9tique AM est l\u2019angle entre le Nord magn\u00e9tique et la direction \u00e0 prendre.<\/li><li>L\u2019azimut g\u00e9ographique AG est l\u2019angle entre le Nord g\u00e9ographique et la direction \u00e0 prendre. Pour passer de l\u2019un \u00e0 l\u2019autre, bien regarder le sch\u00e9ma ci-contre.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-484374a elementor-widget elementor-widget-image\" data-id=\"484374a\" 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=\"275\" height=\"190\" src=\"https:\/\/www.scouts-europe.org\/scoutorama\/wp-content\/uploads\/sites\/99\/2024\/11\/232-convertir-azimut-geographique-2-1fd69.gif\" class=\"attachment-large size-large wp-image-1474\" alt=\"232 convertir azimut geographique 2 1fd69\" \/>\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<div class=\"elementor-element elementor-element-d9381a6 elementor-widget elementor-widget-text-editor\" data-id=\"d9381a6\" 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><strong>Attention\u00a0!<\/strong>\u00a0Les angles de marche se mesurent toujours dans le sens des aiguilles d\u2019une montre.<\/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>Le Nord magn\u00e9tique (indiqu\u00e9 par l\u2019aiguille de la boussole) ne correspond pas exactement avec le Nord g\u00e9ographique (la direction du p\u00f4le Nord).<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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