{"id":17696,"date":"2019-01-11T10:04:40","date_gmt":"2019-01-11T09:04:40","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=17696"},"modified":"2019-01-11T10:04:40","modified_gmt":"2019-01-11T09:04:40","slug":"lasteroide-tueur-des-dinosaures-aurait-declenche-un-tsunami-de-plus-de-1500-metres-de-haut","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-tueur-des-dinosaures-aurait-declenche-un-tsunami-de-plus-de-1500-metres-de-haut\/","title":{"rendered":"L&rsquo;ast\u00e9ro\u00efde tueur des dinosaures aurait d\u00e9clench\u00e9 un tsunami de plus de 1500 m\u00e8tres de haut"},"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>Lorsque l&rsquo;ast\u00e9ro\u00efde destructeur des dinosaures est entr\u00e9 en collision avec la Terre il y a plus de 65 millions d&rsquo;ann\u00e9es, son arriv\u00e9e ne s&rsquo;est pas faite en douceur ! Une nouvelle \u00e9tude r\u00e9v\u00e8le que le tsunami qui a travers\u00e9 le golfe du Mexique a provoqu\u00e9 le chaos dans tous les oc\u00e9ans du monde.<\/p>\n<p>La roche spatiale de 14 km, connue sous le nom d&rsquo;ast\u00e9ro\u00efde Chicxulub, a provoqu\u00e9 tant de destructions qu&rsquo;il n&rsquo;est pas \u00e9tonnant que l&rsquo;ast\u00e9ro\u00efde ait mis fin \u00e0 l&rsquo;\u00e2ge des dinosaures, menant \u00e0 l&rsquo;extinction dite du Cr\u00e9tac\u00e9-Pal\u00e9og\u00e8ne.<\/p>\n<p>&nbsp;<img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"17702\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-tueur-des-dinosaures-aurait-declenche-un-tsunami-de-plus-de-1500-metres-de-haut\/terre-65millionsdannees\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/terre-65millionsdann%C3%A9es.jpg?fit=640%2C368&amp;ssl=1\" data-orig-size=\"640,368\" 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=\"terre-65millionsdann\u00e9es\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/terre-65millionsdann%C3%A9es.jpg?fit=300%2C173&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/terre-65millionsdann%C3%A9es.jpg?fit=640%2C368&amp;ssl=1\" class=\"alignnone size-full wp-image-17702\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/terre-65millionsdann%C3%A9es.jpg?resize=640%2C368&#038;ssl=1\" alt=\"\" width=\"640\" height=\"368\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/terre-65millionsdann%C3%A9es.jpg?w=640&amp;ssl=1 640w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/terre-65millionsdann%C3%A9es.jpg?resize=300%2C173&amp;ssl=1 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<p>\u00ab\u00a0L&rsquo;ast\u00e9ro\u00efde Chicxulub a provoqu\u00e9 un tsunami mondial gigantesque, comme on n&rsquo;en a jamais vu dans l&rsquo;histoire moderne\u00a0\u00bb, a d\u00e9clar\u00e9 la chercheuse principale Molly Range, qui a effectu\u00e9 cette recherche tout en obtenant sa ma\u00eetrise au D\u00e9partement des sciences de la Terre et de l&rsquo;environnement de l&rsquo;Universit\u00e9 du Michigan.<\/p>\n<p>Molly Range et ses coll\u00e8gues ont pr\u00e9sent\u00e9 cette recherche, qui doit encore \u00eatre publi\u00e9e dans une revue du comit\u00e9 de lecture, lors de la r\u00e9union annuelle de l&rsquo;American Geophysical Union le 14 d\u00e9cembre 2019 \u00e0 Washington, DC. L&rsquo;\u00e9tude qui a \u00e9t\u00e9 retranscrite pour la premi\u00e8re fois par EOS, est une nouveaut\u00e9. \u00ab\u00a0Pour autant que nous sachions, nous sommes les premiers \u00e0 mod\u00e9liser globalement le tsunami de l&rsquo;impact et de la finalit\u00e9 de la propagation des vagues\u00a0\u00bb, a d\u00e9clar\u00e9 Range.<\/p>\n<p>L&rsquo;id\u00e9e du projet a d\u00e9marr\u00e9 lorsque les deux conseillers de Range &#8211; Ted Moore et Brian Arbic, du D\u00e9partement des sciences de la Terre et de l&rsquo;Environnement de l&rsquo;Universit\u00e9 du Michigan &#8211; ont r\u00e9alis\u00e9 qu&rsquo;il existait une lacune \u00e9difiante dans le domaine de la recherche de l\u2019ast\u00e9ro\u00efde Chicxulub. \u00c9tonnamment, personne n&rsquo;avait publi\u00e9 de simulation globale du tsunami cr\u00e9\u00e9 par l&rsquo;ast\u00e9ro\u00efde.<\/p>\n<p>\u00ab\u00a0Ce n&rsquo;est qu&rsquo;au d\u00e9but de ce projet que j&rsquo;ai r\u00e9alis\u00e9 l&rsquo;ampleur r\u00e9elle de ce tsunami et c&rsquo;est une histoire de recherche passionnante \u00e0 partager\u00a0\u00bb, a d\u00e9clar\u00e9 Range.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"17697\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-tueur-des-dinosaures-aurait-declenche-un-tsunami-de-plus-de-1500-metres-de-haut\/tsunami-dinosaure\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure.jpg?fit=640%2C368&amp;ssl=1\" data-orig-size=\"640,368\" 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=\"tsunami-dinosaure\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure.jpg?fit=300%2C173&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure.jpg?fit=640%2C368&amp;ssl=1\" class=\"alignnone size-full wp-image-17697\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure.jpg?resize=640%2C368&#038;ssl=1\" alt=\"\" width=\"640\" height=\"368\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure.jpg?w=640&amp;ssl=1 640w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure.jpg?resize=300%2C173&amp;ssl=1 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<p>Les chercheurs savaient que l&rsquo;ast\u00e9ro\u00efde avait touch\u00e9 des eaux peu profondes dans le golfe du Mexique. Mais pour mod\u00e9liser correctement son \u00e9norme impact, ils avaient besoin d&rsquo;un mod\u00e8le capable de calculer \u00ab\u00a0la d\u00e9formation \u00e0 grande \u00e9chelle de la cro\u00fbte terrestre formant le crat\u00e8re, ainsi que les ondes chaotiques des eaux initiales loin du site de l&rsquo;impact, et les vagues d\u2019\u00e9jecta retombant dans l\u2019eau \u00ab\u00a0, a d\u00e9clar\u00e9 Range. Le groupe s&rsquo;est donc tourn\u00e9 vers Brandon Johnson, professeur adjoint, qui \u00e9tudie l&rsquo;impact de la formation de crat\u00e8res \u00e0 la Brown University, dans le Rhode Island.<\/p>\n<p>Johnson a pr\u00e9sent\u00e9 un mod\u00e8le d\u00e9crivant ce qui s&rsquo;est pass\u00e9 dans les 10 minutes qui ont suivi l&rsquo;impact, lorsque le crat\u00e8re avait une profondeur de pr\u00e8s de 1,5 km et que l&rsquo;explosion \u00e9tait si puissante qu&rsquo;il n&rsquo;y avait pas encore d&rsquo;eau dans le crat\u00e8re. \u00ab\u00c0 ce stade, de l\u2019eau est revenue dans le crat\u00e8re\u00bb, a d\u00e9clar\u00e9 Range. Selon le mod\u00e8le, \u00ab\u00a0cette eau se pr\u00e9cipitera dans le crat\u00e8re puis se retirera pour former une \u00ab\u00a0vague d&rsquo;effondrement\u00a0\u00bb\u00a0\u00bb.<\/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=\"17698\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-tueur-des-dinosaures-aurait-declenche-un-tsunami-de-plus-de-1500-metres-de-haut\/tsunami-dinosaure-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure-1.jpg?fit=350%2C220&amp;ssl=1\" data-orig-size=\"350,220\" 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=\"tsunami-dinosaure\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure-1.jpg?fit=300%2C189&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure-1.jpg?fit=350%2C220&amp;ssl=1\" class=\"size-full wp-image-17698 alignleft\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure-1.jpg?resize=350%2C220&#038;ssl=1\" alt=\"\" width=\"350\" height=\"220\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure-1.jpg?w=350&amp;ssl=1 350w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure-1.jpg?resize=300%2C189&amp;ssl=1 300w\" sizes=\"auto, (max-width: 350px) 100vw, 350px\" \/>Dans un deuxi\u00e8me mod\u00e8le, l&rsquo;\u00e9quipe a \u00e9tudi\u00e9 la propagation du tsunami dans les oc\u00e9ans du monde entier. Pour ce faire, ils ont pris les r\u00e9sultats du premier mod\u00e8le (notamment la forme du crat\u00e8re) et les vagues de l&rsquo;impact en ce qui concerne le niveau d&rsquo;une mer calme et les vitesses de l&rsquo;eau, a expliqu\u00e9 Range. Ils ont ensuite utilis\u00e9 des ensembles de donn\u00e9es sur le terrain antique de l&rsquo;oc\u00e9an et l&rsquo;ont utilis\u00e9 pour d\u00e9terminer comment le tsunami se serait d\u00e9roul\u00e9.<\/p>\n<p>Les r\u00e9sultats montrent que les effets du tsunami ont \u00e9t\u00e9 ressentis dans le monde entier.<\/p>\n<p>\u00ab\u00a0Nous avons constat\u00e9 que ce tsunami avait eu lieu dans tout l&rsquo;oc\u00e9an, dans tous les bassins oc\u00e9aniques\u00a0\u00bb, a d\u00e9clar\u00e9 Range. Elle a d\u00e9couvert que dans l&rsquo;eau du golfe du Mexique, le d\u00e9bit de l&rsquo;eau atteignait 143 km\/h. Au cours des premi\u00e8res 24 heures, l&rsquo;impact du tsunami s&rsquo;est \u00e9tendu du golfe du Mexique \u00e0 l&rsquo;Atlantique, ainsi que par la voie maritime d&rsquo;Am\u00e9rique centrale (qui n&rsquo;existe plus, mais qui reliait autrefois le golfe au Pacifique).<\/p>\n<p>Apr\u00e8s la vague initiale de pr\u00e8s de 1,5 km, d\u2019autres vagues \u00e9normes ont secou\u00e9 les oc\u00e9ans du monde. Dans le Pacifique Sud et l\u2019Atlantique Nord, les vagues ont atteint une hauteur maximale de 14 m. Dans le Pacifique Nord, ils atteignaient 4 m. Pendant ce temps, le golfe du Mexique a vu des vagues atteignant 20 m\u00e8tres et 100 m \u00e0 d\u2019autres.<\/p>\n<p>Pour mettre cela en perspective, la plus grande vague moderne jamais enregistr\u00e9e dans l&rsquo;h\u00e9misph\u00e8re sud \u00e9tait une \u00ab\u00a0maigre\u00a0\u00bb hauteur de 23,8 m, atteignant pr\u00e8s de la Nouvelle-Z\u00e9lande en mai 2018.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"17699\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-tueur-des-dinosaures-aurait-declenche-un-tsunami-de-plus-de-1500-metres-de-haut\/asteroide-chicxulub\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/asteroide-chicxulub.jpg?fit=640%2C427&amp;ssl=1\" data-orig-size=\"640,427\" 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=\"asteroide-chicxulub\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/asteroide-chicxulub.jpg?fit=300%2C200&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/asteroide-chicxulub.jpg?fit=640%2C427&amp;ssl=1\" class=\"alignnone size-full wp-image-17699\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/asteroide-chicxulub.jpg?resize=640%2C427&#038;ssl=1\" alt=\"\" width=\"640\" height=\"427\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/asteroide-chicxulub.jpg?w=640&amp;ssl=1 640w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/asteroide-chicxulub.jpg?resize=300%2C200&amp;ssl=1 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<p>Preuves solides<br \/>\nIl y a des preuves qui soutiennent les mod\u00e8les, dit Range. Selon le deuxi\u00e8me mod\u00e8le, la rapidit\u00e9 des effets de l&rsquo;eau r\u00e9sultant de l&rsquo;impact a probablement provoqu\u00e9 une \u00e9rosion et une perturbation des s\u00e9diments dans les bassins oc\u00e9aniques du Pacifique Sud, de l&rsquo;Atlantique Nord et de la M\u00e9diterran\u00e9e.<\/p>\n<p>Dans une \u00e9tude s\u00e9par\u00e9e (qui n&rsquo;a pas encore \u00e9t\u00e9 publi\u00e9e), Moore a examin\u00e9 les enregistrements de s\u00e9diments dans l&rsquo;oc\u00e9an. Ses conclusions sont en accord avec le mod\u00e8le du tsunami, a d\u00e9clar\u00e9 Range.<\/p>\n<p>Il peut \u00eatre difficile d\u2019imaginer un tsunami aussi cataclysmique. Les chercheurs l\u2019ont donc compar\u00e9 au tsunami de 2004 dans l\u2019oc\u00e9an Indien, qui a fait au moins 225 000 morts. Les deux tsunamis ont \u00e9t\u00e9 aussi diff\u00e9rents que nuit et jour, ils ont trouv\u00e9. \u00ab\u00a0Au cours des sept premi\u00e8res heures qui ont suivi les deux tsunamis, le tsunami \u00e0 impact [Chicxulub] \u00e9tait de 2 500 \u00e0 29 000 fois plus \u00e9nerg\u00e9tique que le tsunami de 2004 dans l&rsquo;oc\u00e9an Indien\u00a0\u00bb, a d\u00e9clar\u00e9 Range.<\/p>\n<p>Bien s\u00fbr, le tsunami g\u00e9ant n\u2019\u00e9tait pas le seul \u00e9v\u00e9nement qui ait touch\u00e9 les dinosaures non aviaires. L&rsquo;ast\u00e9ro\u00efde a \u00e9galement d\u00e9clench\u00e9 des ondes de choc et envoy\u00e9 une grande quantit\u00e9 de roches et de poussi\u00e8res chaudes dans l&rsquo;atmosph\u00e8re, qui se sont frott\u00e9es avec une telle friction qu&rsquo;elles ont allum\u00e9 des feux de for\u00eat et ont cuit les animaux. Ces particules ont \u00e9galement plan\u00e9 dans l&rsquo;atmosph\u00e8re et bloqu\u00e9 les rayons du soleil pendant des ann\u00e9es, tuant les plantes et les animaux qui s&rsquo;en nourrissaient.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"17700\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-tueur-des-dinosaures-aurait-declenche-un-tsunami-de-plus-de-1500-metres-de-haut\/cratere-impact-asteroide-dinosaure\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/cratere-impact-asteroide-dinosaure.png?fit=639%2C376&amp;ssl=1\" data-orig-size=\"639,376\" 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=\"cratere-impact-asteroide-dinosaure\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/cratere-impact-asteroide-dinosaure.png?fit=300%2C177&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/cratere-impact-asteroide-dinosaure.png?fit=639%2C376&amp;ssl=1\" class=\"alignnone size-full wp-image-17700\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/cratere-impact-asteroide-dinosaure.png?resize=639%2C376&#038;ssl=1\" alt=\"\" width=\"639\" height=\"376\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/cratere-impact-asteroide-dinosaure.png?w=639&amp;ssl=1 639w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/cratere-impact-asteroide-dinosaure.png?resize=300%2C177&amp;ssl=1 300w\" sizes=\"auto, (max-width: 639px) 100vw, 639px\" \/><\/p>\n<p>Adaptation <a href=\"https:\/\/www.laterredufutur.com\/accueil\/\">La Terre du Futur<\/a><\/p>\n<p>source : <a href=\"https:\/\/www.livescience.com\/64426-dinosaur-killing-asteroid-caused-giant-tsunami.html\" target=\"_blank\" rel=\"noopener\">https:\/\/www.livescience.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"17696\">(1460)<\/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>Lorsque l&rsquo;ast\u00e9ro\u00efde destructeur des dinosaures est entr\u00e9 en collision avec la Terre il y a plus de 65 millions d&rsquo;ann\u00e9es,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":17701,"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":"L'ast\u00e9ro\u00efde tueur des dinosaures aurait d\u00e9clench\u00e9 un tsunami de plus de 1500 m\u00e8tres de haut @laterredufutur","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":[33,22,21],"tags":[6903,118,1176,6902,1206,108],"class_list":["post-17696","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archeologie","category-espace","category-evenement-brutal","tag-65-millions-dannees","tag-asteroide","tag-cataclysme","tag-chicxulub","tag-dinosaures","tag-tsunami","wpcat-33-id","wpcat-22-id","wpcat-21-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/tsunami-dinosaure-2.jpg?fit=524%2C299&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-4Bq","jetpack-related-posts":[{"id":24586,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-asteroide-colossal-tueur-de-planete-a-provoque-un-mega-tsunami-sur-mars\/","url_meta":{"origin":17696,"position":0},"title":"Un ast\u00e9ro\u00efde colossal \u00ab\u00a0tueur de plan\u00e8te\u00a0\u00bb a provoqu\u00e9 un m\u00e9ga-tsunami sur Mars","author":"Admin","date":"8 d\u00e9cembre 2022","format":false,"excerpt":"Les scientifiques plan\u00e9taires ont localis\u00e9 l'emplacement probable de l'impact d'un ast\u00e9ro\u00efde massif qui a d\u00e9clench\u00e9 un \u00e9norme tsunami sur la plan\u00e8te rouge il y a environ 3,4 milliards d'ann\u00e9es. Un crat\u00e8re d'impact r\u00e9cemment d\u00e9couvert sur Mars a probablement \u00e9t\u00e9 laiss\u00e9 par un \u00e9norme ast\u00e9ro\u00efde qui a percut\u00e9 la plan\u00e8te rouge\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/eau-sur-mars-region-habitable.jpg?fit=1200%2C750&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/eau-sur-mars-region-habitable.jpg?fit=1200%2C750&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/eau-sur-mars-region-habitable.jpg?fit=1200%2C750&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/eau-sur-mars-region-habitable.jpg?fit=1200%2C750&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/eau-sur-mars-region-habitable.jpg?fit=1200%2C750&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":22819,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-meteorite-qui-a-aneanti-les-dinosaures-est-liee-a-une-population-dasteroides-primitifs-sombres\/","url_meta":{"origin":17696,"position":1},"title":"La m\u00e9t\u00e9orite qui a an\u00e9anti les dinosaures est li\u00e9e \u00e0 une population d'\u00a0\u00bbast\u00e9ro\u00efdes primitifs sombres\u00a0\u00bb.","author":"Admin","date":"30 juillet 2021","format":false,"excerpt":"Il y a environ 66 millions d'ann\u00e9es, un objet gigantesque s'est \u00e9cras\u00e9 sur la Terre, d\u00e9clenchant une extinction massive qui a \u00e9limin\u00e9 les dinosaures. Aujourd'hui, des scientifiques du Southwest Research Institute affirment avoir remont\u00e9 la piste du coupable jusqu'\u00e0 son point d'origine, l'identifiant comme un \"ast\u00e9ro\u00efde primitif sombre\". La fin\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/07\/asteroide-impact-terre.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/07\/asteroide-impact-terre.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/07\/asteroide-impact-terre.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/07\/asteroide-impact-terre.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/07\/asteroide-impact-terre.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":27298,"url":"https:\/\/www.laterredufutur.com\/accueil\/quest-il-arrive-a-lasteroide-qui-a-tue-les-dinosaures\/","url_meta":{"origin":17696,"position":2},"title":"Qu&rsquo;est-il arriv\u00e9 \u00e0 l&rsquo;ast\u00e9ro\u00efde qui a tu\u00e9 les dinosaures ?","author":"Admin","date":"3 octobre 2025","format":false,"excerpt":"Il y a environ 66 millions d'ann\u00e9es, un ast\u00e9ro\u00efde tueur s'est \u00e9cras\u00e9 sur la Terre \u00e0 43 000 km\/h. O\u00f9 se trouve-t-il aujourd'hui ? Il y a environ 66 millions d'ann\u00e9es, le r\u00e8gne des dinosaures prit fin brutalement. Un ast\u00e9ro\u00efde d'environ 12 kilom\u00e8tres de diam\u00e8tre , volant \u00e0 43 000\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/asteroide-tueur-Chicxulub.webp?fit=650%2C366&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/asteroide-tueur-Chicxulub.webp?fit=650%2C366&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/asteroide-tueur-Chicxulub.webp?fit=650%2C366&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":25332,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-ancienne-boite-noire-laisse-entrevoir-ce-qui-a-vraiment-tue-les-dinosaures\/","url_meta":{"origin":17696,"position":3},"title":"Une ancienne \u00ab\u00a0bo\u00eete noire\u00a0\u00bb laisse entrevoir ce qui a vraiment tu\u00e9 les dinosaures","author":"Admin","date":"4 novembre 2023","format":false,"excerpt":"Les fines poussi\u00e8res en suspension dans l'atmosph\u00e8re ont peut-\u00eatre jou\u00e9 un r\u00f4le important dans l'extinction des dinosaures. Il est g\u00e9n\u00e9ralement admis qu'il y a environ 66 millions d'ann\u00e9es, un rocher spatial plus grand que le mont Everest s'est \u00e9cras\u00e9 sur ce qui est aujourd'hui la c\u00f4te du Mexique, d\u00e9clenchant une\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\/2023\/10\/dinosaure_asteroide.jpg?fit=1024%2C415&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/dinosaure_asteroide.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/dinosaure_asteroide.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/dinosaure_asteroide.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":24454,"url":"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-tueur-de-dinosaures-a-provoque-des-tsunamis-mondiaux-dune-hauteur-de-3-5-km\/","url_meta":{"origin":17696,"position":4},"title":"L&rsquo;ast\u00e9ro\u00efde tueur de dinosaures a provoqu\u00e9 des tsunamis mondiaux d&rsquo;une hauteur de 3.5 km","author":"Admin","date":"5 octobre 2022","format":false,"excerpt":"Selon une nouvelle \u00e9tude, l'ast\u00e9ro\u00efde tueur de dinosaures qui a percut\u00e9 la Terre il y a 66 millions d'ann\u00e9es a \u00e9galement d\u00e9clench\u00e9 un tsunami de taille gigantesque, avec des vagues de plusieurs kilom\u00e8tres de haut dans le golfe du Mexique, dont les eaux ont parcouru la moiti\u00e9 du globe. Les\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\/04\/comete-asteroide.jpg?fit=1000%2C667&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/comete-asteroide.jpg?fit=1000%2C667&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/comete-asteroide.jpg?fit=1000%2C667&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/comete-asteroide.jpg?fit=1000%2C667&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":26204,"url":"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-qui-a-tue-les-dinosaures-venait-dau-dela-de-jupiter\/","url_meta":{"origin":17696,"position":5},"title":"L&rsquo;ast\u00e9ro\u00efde qui a tu\u00e9 les dinosaures venait d&rsquo;au-del\u00e0 de Jupiter","author":"Admin","date":"4 septembre 2024","format":false,"excerpt":"Des indices chimiques laiss\u00e9s dans le crat\u00e8re d'impact peuvent aider \u00e0 retracer les origines de la m\u00e9t\u00e9orite. L'ast\u00e9ro\u00efde meurtrier le plus embl\u00e9matique de la Terre provient des confins du syst\u00e8me solaire, rapportent des chercheurs dans la revue Science du 16 ao\u00fbt. Il y a environ 66 millions d'ann\u00e9es, un ast\u00e9ro\u00efde\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/meteorite-de-Chicxulub-sur-le-Yucatan.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\/08\/meteorite-de-Chicxulub-sur-le-Yucatan.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/meteorite-de-Chicxulub-sur-le-Yucatan.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/meteorite-de-Chicxulub-sur-le-Yucatan.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/17696","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=17696"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/17696\/revisions"}],"predecessor-version":[{"id":17703,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/17696\/revisions\/17703"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/17701"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=17696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=17696"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=17696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}