{"id":2631,"date":"2025-04-07T11:41:34","date_gmt":"2025-04-07T14:41:34","guid":{"rendered":"https:\/\/blog.simuladosanac.com\/?post_type=glossary&#038;p=2631"},"modified":"2025-04-07T11:41:35","modified_gmt":"2025-04-07T14:41:35","slug":"declinacao-magnetica","status":"publish","type":"glossary","link":"https:\/\/simuladosanac.com\/blog\/glossario-termos\/declinacao-magnetica\/","title":{"rendered":"Declina\u00e7\u00e3o magn\u00e9tica"},"content":{"rendered":"\n<p>A declina\u00e7\u00e3o magn\u00e9tica (Dmg) \u00e9 o \u00e2ngulo formado entre o norte verdadeiro (ou geogr\u00e1fico) e o norte magn\u00e9tico. \u00c9 expressa em graus e recebe a designa\u00e7\u00e3o leste (E) ou oeste (W) para indicar de que lado o meridiano magn\u00e9tico est\u00e1 em rela\u00e7\u00e3o ao meridiano verdadeiro.<\/p>\n\n\n\n<p>A Dmg varia de um local para outro na superf\u00edcie terrestre devido \u00e0s irregularidades das linhas de for\u00e7a do campo magn\u00e9tico terrestre. Enquanto os polos verdadeiros s\u00e3o fixos, os polos magn\u00e9ticos da Terra variam de posi\u00e7\u00e3o, fazendo com que a declina\u00e7\u00e3o magn\u00e9tica de um local tamb\u00e9m varie ao longo do tempo.<\/p>\n\n\n\n<p>Nas cartas aeron\u00e1uticas, a declina\u00e7\u00e3o magn\u00e9tica \u00e9 representada por:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Linhas isog\u00f4nicas: linhas que unem pontos de mesma declina\u00e7\u00e3o magn\u00e9tica<\/li>\n\n\n\n<li>Linhas ag\u00f4nicas: linhas que unem pontos onde a declina\u00e7\u00e3o magn\u00e9tica \u00e9 nula (0\u00b0)<\/li>\n<\/ul>\n\n\n\n<p>Para convers\u00e3o entre valores verdadeiros e magn\u00e9ticos:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DMG &#8220;W&#8221; (a oeste do norte verdadeiro) \u2192 Soma-se o valor ao verdadeiro para encontrar o valor magn\u00e9tico<\/li>\n\n\n\n<li>DMG &#8220;E&#8221; (a leste do norte verdadeiro) \u2192 Diminui-se o valor ao verdadeiro para encontrar o valor magn\u00e9tico<\/li>\n<\/ul>\n\n\n\n<p>Durante a navega\u00e7\u00e3o, quando a rota tra\u00e7ada cruza mais de uma linha isog\u00f4nica, utiliza-se a declina\u00e7\u00e3o magn\u00e9tica m\u00e9dia para evitar recalcular novos valores de proa e rumo magn\u00e9tico ao longo do voo.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A declina\u00e7\u00e3o magn\u00e9tica (Dmg) \u00e9 o \u00e2ngulo formado entre o norte verdadeiro (ou geogr\u00e1fico) e o norte magn\u00e9tico. \u00c9 expressa em graus e recebe a designa\u00e7\u00e3o leste (E) ou oeste (W) para indicar de que lado o meridiano magn\u00e9tico est\u00e1 em rela\u00e7\u00e3o ao meridiano verdadeiro. A Dmg varia de um local para outro na superf\u00edcie [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"glossary-categories":[],"glossary-tags":[],"class_list":["post-2631","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Declina\u00e7\u00e3o magn\u00e9tica - Simulados ANAC<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.simuladosanac.com\/glossary-categories\/declinacao-magnetica\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Declina\u00e7\u00e3o magn\u00e9tica - Simulados ANAC\" \/>\n<meta property=\"og:description\" content=\"A declina\u00e7\u00e3o magn\u00e9tica (Dmg) \u00e9 o \u00e2ngulo formado entre o norte verdadeiro (ou geogr\u00e1fico) e o norte magn\u00e9tico. \u00c9 expressa em graus e recebe a designa\u00e7\u00e3o leste (E) ou oeste (W) para indicar de que lado o meridiano magn\u00e9tico est\u00e1 em rela\u00e7\u00e3o ao meridiano verdadeiro. 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