{"id":20193,"date":"2019-11-28T17:00:59","date_gmt":"2019-11-28T16:00:59","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=20193"},"modified":"2019-11-24T19:18:31","modified_gmt":"2019-11-24T18:18:31","slug":"un-arbre-tres-ancien-decouvert-contiendrait-la-preuve-dune-inversion-du-champ-magnetique-terrestre","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/un-arbre-tres-ancien-decouvert-contiendrait-la-preuve-dune-inversion-du-champ-magnetique-terrestre\/","title":{"rendered":"Un arbre tr\u00e8s ancien d\u00e9couvert contiendrait la preuve d&rsquo;une inversion du champ magn\u00e9tique terrestre"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>Les arbres peuvent \u00eatre fantastiques. Ils vivent, ont une \u00ab\u00a0\u00e2me\u00a0\u00bb et enregistrent parfois des \u00e9v\u00e9nements apocalyptiques qui se produisent sur Terre.<\/p>\n<p>R\u00e9cemment, \u00e0 Ngawha, au nord de la Nouvelle-Z\u00e9lande, des personnes ont d\u00e9couvert un vieil arbre sur une plage. Apr\u00e8s des recherches scientifiques, il semble que le tronc contienne une trace de l&rsquo;inversion du champ magn\u00e9tique de la Terre dans ses anneaux.<\/p>\n<p>Les arbres sont majestueux. Ils saignent, peuvent communiquer les uns avec les autres. Dans leurs anneaux, ils enregistrent aussi parfois des \u00e9v\u00e9nements d\u00e9vastateurs pass\u00e9s tels que la s\u00e9cheresse, les ouragans et m\u00eame des explosions spatiales.<\/p>\n<p>Lors de la derni\u00e8re \u00e9tonnante d\u00e9couverte, un g\u00e9ant Agathis australis, \u00e9galement connu sous le nom de Maori Kauri, a \u00e9t\u00e9 d\u00e9couvert lors des travaux d&rsquo;excavation d&rsquo;une centrale g\u00e9othermique \u00e0 Ngawha, sur le Nord de la Nouvelle-Z\u00e9lande.<\/p>\n<p>Et apr\u00e8s enqu\u00eates, les scientifiques ont d\u00e9couvert qu\u2019il n\u2019y avait d&rsquo;arbre de ce type dans le monde, car ses anneaux avaient une m\u00e9moire compl\u00e8te d\u2019un \u00e9v\u00e9nement d&rsquo;un changement de r\u00e9gime qui s\u2019\u00e9tait produit entre 41 000 et 42 500 ans.<\/p>\n<p>C&rsquo;est la premi\u00e8re fois qu&rsquo;un arbre ayant v\u00e9cu pendant tout un \u00e9v\u00e9nement d&rsquo;inversion du champ magn\u00e9tique a \u00e9t\u00e9 trouv\u00e9.<\/p>\n<p>L&rsquo;arbre g\u00e9ant Kauri a \u00e9t\u00e9 retrouv\u00e9 tr\u00e8s bien conserv\u00e9, enfoui \u00e0 8m de profondeur.<\/p>\n<p>Ce sp\u00e9cimen g\u00e9ant mesure 20 m\u00e8tres de long et 2,5 m\u00e8tres de diam\u00e8tre. Il \u00e9tait \u00e2g\u00e9 de 1500 ans quand il est mort, il y a plus de 41 000 ans.<\/p>\n<p>Au cours de sa vie, le champ magn\u00e9tique de la Terre s&rsquo;est presque compl\u00e8tement invers\u00e9, ce qui a entra\u00een\u00e9 une augmentation du rayonnement solaire. Et cette augmentation \u00e9nerg\u00e9tique a \u00e9t\u00e9 enregistr\u00e9e dans les cernes de l&rsquo;arbre.<\/p>\n<p>Comme l&rsquo;explique le principal chercheur :<\/p>\n<p>\u00abCet \u00e9norme arbre isol\u00e9 a pouss\u00e9 pendant environ 1 700 ans au cours d&rsquo;une p\u00e9riode remarquable de l&rsquo;histoire de notre plan\u00e8te, lorsque le champ magn\u00e9tique de la Terre s&rsquo;est invers\u00e9 il y a environ 42 000 ans, une p\u00e9riode connue sous le nom d&rsquo;excursion de Laschamp. Financ\u00e9 par l&rsquo;Australian Research Council, nous effectuons des mesures d\u00e9taill\u00e9es de la forme radioactive du carbone \u00e0 travers les cernes des arbres. \u00a0\u00bb<\/p>\n<p>Au cours de ses 1500 ann\u00e9es de vie, l&rsquo;arbre a connu l&rsquo;une des excursions g\u00e9omagn\u00e9tiques de la Terre, ce qui signifie que le p\u00f4le magn\u00e9tique nord a d\u00e9riv\u00e9 dans l&rsquo;h\u00e9misph\u00e8re sud et est remont\u00e9 \u00e0 nouveau.<\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"20197\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/un-arbre-tres-ancien-decouvert-contiendrait-la-preuve-dune-inversion-du-champ-magnetique-terrestre\/arbre-inversion-magnetique-terre-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?fit=1240%2C699&amp;ssl=1\" data-orig-size=\"1240,699\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"arbre-inversion-magnetique-terre\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?fit=300%2C169&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?fit=800%2C451&amp;ssl=1\" class=\"alignnone size-full wp-image-20197\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?resize=1240%2C699&#038;ssl=1\" alt=\"\" width=\"1240\" height=\"699\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?w=1240&amp;ssl=1 1240w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?resize=800%2C451&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?resize=768%2C433&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?resize=1226%2C691&amp;ssl=1 1226w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?resize=928%2C523&amp;ssl=1 928w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre-1.jpg?resize=480%2C271&amp;ssl=1 480w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>Historique d&rsquo;inversion de p\u00f4le magn\u00e9tique<\/p>\n<p>Les inversions des p\u00f4les magn\u00e9tiques se produisent de mani\u00e8re al\u00e9atoire. 183 \u00e9v\u00e9nements ont eu lieu au cours des 83 millions d&rsquo;ann\u00e9es. Le processus est lent et dure entre 2 000 et 12 000 ans. Mais une \u00e9tude r\u00e9cente a montr\u00e9 que l&rsquo;inversion magn\u00e9tique pourrait m\u00eame s&rsquo;\u00e9tendre sur 22 000 ans. Donc, ce n&rsquo;est pas abrupt.<\/p>\n<p>Le derni\u00e8re inversion compl\u00e8te s&rsquo;est produite il y a environ 780 000 ans. Mais r\u00e9cemment, des scientifiques d\u00e9concert\u00e9s ont annonc\u00e9 que le p\u00f4le nord magn\u00e9tique avait commenc\u00e9 \u00e0 se d\u00e9placer de fa\u00e7on inattendue vers la Sib\u00e9rie.<\/p>\n<p>La d\u00e9couverte de ce vieil arbre en Nouvelle-Z\u00e9lande am\u00e9liorera notre compr\u00e9hension de l&rsquo;ampleur et du taux de changement lorsque le champ magn\u00e9tique s&rsquo;est invers\u00e9 pendant la p\u00e9riode Laschamp. Cela pr\u00e9sente un grand int\u00e9r\u00eat compte tenu des r\u00e9cents changements intervenus dans le champ magn\u00e9tique terrestre.<\/p>\n<p>La recherche est financ\u00e9e par l&rsquo;Australie Research Council et dirig\u00e9e par le professeur Chris Turney de l&rsquo;Universit\u00e9 de New South Wales, expert en pal\u00e9oclimatologie et en changement climatique au cours des 40 000 derni\u00e8res ann\u00e9es.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/VQEH0-6x7q8?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>adaptation <a href=\"https:\/\/www.laterredufutur.com\/accueil\/\">Terra Projects<\/a><\/p>\n<p>sources : <a href=\"https:\/\/strangesounds.org\/2019\/11\/new-zealand-ancient-tree-ring-magnetic-field-reversal-video.html\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/strangesounds.org<\/a> \/ <a href=\"https:\/\/www.stuff.co.nz\/science\/113954687\/ancient-northland-kauri-tree-reveals-secrets-of-earths-polar-reversal\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.stuff.co.nz\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"20193\">(3880)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Les arbres peuvent \u00eatre fantastiques. Ils vivent, ont une \u00ab\u00a0\u00e2me\u00a0\u00bb et enregistrent parfois des \u00e9v\u00e9nements apocalyptiques qui se produisent sur&#8230;<\/p>\n","protected":false},"author":1,"featured_media":20194,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"Un arbre tr\u00e8s ancien d\u00e9couvert contiendrait la preuve d'une inversion @laterredufutur.com Terra Projects","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[33,31],"tags":[7294,288,2765,2544,261,75],"class_list":["post-20193","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archeologie","category-divers","tag-42000-ans","tag-arbre","tag-inversion","tag-magnetique","tag-pole","tag-terre","wpcat-33-id","wpcat-31-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/arbre-inversion-magnetique-terre.jpg?fit=1024%2C527&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-5fH","jetpack-related-posts":[{"id":22032,"url":"https:\/\/www.laterredufutur.com\/accueil\/il-y-a-42000-ans-le-monde-connaissait-une-apocalypse-geomagnetique\/","url_meta":{"origin":20193,"position":0},"title":"Il y a 42000 ans, le monde connaissait une apocalypse g\u00e9omagn\u00e9tique","author":"Admin","date":"19 f\u00e9vrier 2021","format":false,"excerpt":"Le champ magn\u00e9tique terrestre a bascul\u00e9 il y a 42000 ans, cr\u00e9ant une \u00ab catastrophe \u00bb climatique. Un renversement de la Terre champ magn\u00e9tique il y a des milliers d\u2019ann\u00e9es, la plan\u00e8te a plong\u00e9 dans une crise environnementale qui aurait pu ressembler \u00e0 \u00abun film catastrophe\u00bb, ont r\u00e9cemment d\u00e9couvert des\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/champ-magnetique-terrestre-arret-42000ans.jpg?fit=1200%2C630&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/champ-magnetique-terrestre-arret-42000ans.jpg?fit=1200%2C630&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/champ-magnetique-terrestre-arret-42000ans.jpg?fit=1200%2C630&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/champ-magnetique-terrestre-arret-42000ans.jpg?fit=1200%2C630&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/champ-magnetique-terrestre-arret-42000ans.jpg?fit=1200%2C630&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":3334,"url":"https:\/\/www.laterredufutur.com\/accueil\/effet-cyclique-de-22ans-et-hiver-2006-2007\/","url_meta":{"origin":20193,"position":1},"title":"Effet Cyclique de 22ans et Hiver 2006-2007","author":"Admin","date":"24 f\u00e9vrier 2006","format":false,"excerpt":"Nous connaissons actuellement une crise climatique sans pr\u00e9c\u00e9dent. Mais il ne faut pas nous leurrer, un effet cyclique actuel de 22 ans ajoute sa responsabilit\u00e9 de l'hiver froid actuel et de celui qui nous attend pour 2006-2007. Ainsi les hivers 1940-1941, 1962-1963, 1984-1985 et enfin cela sera 2006-2007 pour des\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/spaw\/images\/20060203_1900_eit_171.gif?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":8999,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-scientifiques-ont-trouve-des-traces-denormes-tempetes-solaires-pendant-le-moyen-age\/","url_meta":{"origin":20193,"position":2},"title":"Des scientifiques ont trouv\u00e9 des traces d&rsquo;\u00e9normes temp\u00eates solaires pendant le moyen age","author":"Admin","date":"28 octobre 2015","format":false,"excerpt":"Pendant le Moyen Age,\u00a0la Terre a \u00e9t\u00e9 frapp\u00e9e par deux temp\u00eates solaires g\u00e9antes, et beaucoup plus importantes que ce que nous avions observ\u00e9es. Les projections solaires\u00a0ont laiss\u00e9 des marques dans les glaces polaires et dans les arbres qui datent de cette \u00e9poque. Avec les syst\u00e8mes de communication et les r\u00e9seaux\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/tempete-solaire.jpg?fit=640%2C425&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/tempete-solaire.jpg?fit=640%2C425&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/tempete-solaire.jpg?fit=640%2C425&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":27727,"url":"https:\/\/www.laterredufutur.com\/accueil\/quelque-chose-detrange-a-modifie-le-champ-magnetique-terrestre-il-y-a-40-millions-dannees\/","url_meta":{"origin":20193,"position":3},"title":"Quelque chose d&rsquo;\u00e9trange a modifi\u00e9 le champ magn\u00e9tique terrestre il y a 40 millions d&rsquo;ann\u00e9es","author":"Admin","date":"23 f\u00e9vrier 2026","format":false,"excerpt":"Des chercheurs ont identifi\u00e9 une p\u00e9riode de renversement lent du champ magn\u00e9tique terrestre, il y a environ 40 millions d'ann\u00e9es, ce qui soul\u00e8ve d'importantes questions sur la dur\u00e9e r\u00e9elle de ces inversions et sur la mani\u00e8re dont nous pourrions \u00eatre affect\u00e9s par la prochaine. On pense que les inversions du\u2026","rel":"","context":"Dans &quot;Divers&quot;","block_context":{"text":"Divers","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/divers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/05\/champ-magnetique-de-la-Terre.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/05\/champ-magnetique-de-la-Terre.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/05\/champ-magnetique-de-la-Terre.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/05\/champ-magnetique-de-la-Terre.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":4612,"url":"https:\/\/www.laterredufutur.com\/accueil\/changement-de-polarite-de-la-terre\/","url_meta":{"origin":20193,"position":4},"title":"Changement de polarit\u00e9 de la Terre","author":"Admin","date":"24 septembre 2008","format":false,"excerpt":"D'apr\u00e8s ce que l'on sait aujourd'hui, il n'y a apparemment pas de cycle fixe d'inversion. On estime qu'une inversion se fait sans doute en quelque 5\u00a0000 ans, mais que la polarit\u00e9 obtenue peut soit subsister des dizaines de millions d'ann\u00e9es, soit osciller beaucoup plus rapidement, tous les 100\u00a0000 ans environ.\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/terre-magnetisme.jpg?fit=200%2C200&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":24613,"url":"https:\/\/www.laterredufutur.com\/accueil\/letude-des-arbres-suggere-que-les-huns-ont-ete-pousses-dans-leurs-conquetes-par-de-fortes-secheresses\/","url_meta":{"origin":20193,"position":5},"title":"L&rsquo;\u00e9tude des arbres sugg\u00e8re que les Huns ont \u00e9t\u00e9 pouss\u00e9s dans leurs conqu\u00eates par de fortes s\u00e9cheresses","author":"Admin","date":"27 d\u00e9cembre 2022","format":false,"excerpt":"Les arbres peuvent fournir aux scientifiques un moyen de remonter dans le pass\u00e9, r\u00e9v\u00e9lant tout, d'une inversion du champ magn\u00e9tique de la Terre il y a 42 000 ans jusqu'\u00e0 774 de notre \u00e8re, la plan\u00e8te a \u00e9t\u00e9 bombard\u00e9e par une temp\u00eate de radiations massive. Aujourd'hui, des chercheurs ont utilis\u00e9\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/12\/invasions-des-huns.jpg?fit=1024%2C683&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/12\/invasions-des-huns.jpg?fit=1024%2C683&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/12\/invasions-des-huns.jpg?fit=1024%2C683&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/12\/invasions-des-huns.jpg?fit=1024%2C683&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/20193","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=20193"}],"version-history":[{"count":3,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/20193\/revisions"}],"predecessor-version":[{"id":20198,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/20193\/revisions\/20198"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/20194"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=20193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=20193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=20193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}