{"id":18570,"date":"2015-02-16T08:14:46","date_gmt":"2015-02-16T12:44:46","guid":{"rendered":"https:\/\/seryhumano.com\/web\/?p=18570"},"modified":"2015-02-19T09:16:44","modified_gmt":"2015-02-19T13:46:44","slug":"caracteristicas-del-centro-de-la-tierra","status":"publish","type":"post","link":"https:\/\/seryhumano.com\/web\/?p=18570","title":{"rendered":"Caracter\u00edsticas del centro de la Tierra"},"content":{"rendered":"<p>Durante bastante tiempo se crey\u00f3 que el n\u00facleo de la Tierra ten\u00eda solo dos regiones principales claramente diferenciadas: la parte m\u00e1s externa, conocida como n\u00facleo externo, y la m\u00e1s interna, referida como n\u00facleo interno.\u00a0<a href=\"https:\/\/seryhumano.com\/web\/?attachment_id=18572\" rel=\"attachment wp-att-18572\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-18572\" src=\"https:\/\/seryhumano.com\/web\/wp-content\/uploads\/2015\/02\/Tierra1.jpg\" alt=\"Tierra1\" width=\"245\" height=\"206\" \/><\/a><\/p>\n<p>Hace varios a\u00f1os se lleg\u00f3 a la conclusi\u00f3n de que este n\u00facleo interno alberga a su vez a otro, a\u00fan m\u00e1s interno. Una nueva investigaci\u00f3n ha profundizado en las raras caracter\u00edsticas de este n\u00facleo del n\u00facleo interno.<\/p>\n<p>Gracias a una novedosa aplicaci\u00f3n de cierta tecnolog\u00eda de an\u00e1lisis de se\u00f1ales s\u00edsmicas, unos cient\u00edficos de la Universidad de Illinois en Urbana-Champaign, Estados Unidos, y la Universidad de Nanjing en China, han logrado examinar algunos de los rasgos m\u00e1s llamativos conocidos de este n\u00facleo del n\u00facleo interno.<\/p>\n<p>Los geof\u00edsicos aprovechan las ondas s\u00edsmicas de los terremotos para escanear el interior profundo de la Tierra, de manera muy parecida a c\u00f3mo los m\u00e9dicos usan los ultrasonidos para ver el interior de sus pacientes. Xiaodong Song, Tao Wang y Han H. Xia emplearon una tecnolog\u00eda que recoge datos no de la sacudida inicial de un terremoto, sino de las ondas que resuenan despu\u00e9s de \u00e9l. En ese sentido, el terremoto es como un martillo golpeando una campana. De manera muy parecida a c\u00f3mo un oyente escucha el ta\u00f1ido que resuena despu\u00e9s de que el badajo golpee la campana, y que le demuestra la naturaleza met\u00e1lica de esta, los sensores s\u00edsmicos recogen una se\u00f1al capaz de revelar detalles sobre las estructuras m\u00e1s internas de la Tierra.<\/p>\n<p>El n\u00facleo del n\u00facleo interno tiene aproximadamente la mitad del di\u00e1metro de todo el n\u00facleo interno. Los cristales de hierro en la capa m\u00e1s externa del n\u00facleo interno est\u00e1n alineados direccionalmente, de norte a sur. Sin embargo, en el n\u00facleo del n\u00facleo interno, los cristales de hierro apuntan m\u00e1s o menos de este a oeste.<a href=\"https:\/\/seryhumano.com\/web\/?attachment_id=18574\" rel=\"attachment wp-att-18574\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-18574\" src=\"https:\/\/seryhumano.com\/web\/wp-content\/uploads\/2015\/02\/Tierra2.jpg\" alt=\"Tierra2\" width=\"670\" height=\"594\" srcset=\"https:\/\/seryhumano.com\/web\/wp-content\/uploads\/2015\/02\/Tierra2.jpg 670w, https:\/\/seryhumano.com\/web\/wp-content\/uploads\/2015\/02\/Tierra2-300x266.jpg 300w\" sizes=\"auto, (max-width: 670px) 100vw, 670px\" \/><\/a><\/p>\n<p>Y no solo los cristales de hierro en el n\u00facleo del n\u00facleo interno est\u00e1n alineados de manera diferente, tambi\u00e9n se comportan de forma distinta respecto a sus hom\u00f3logos en la parte m\u00e1s exterior del n\u00facleo interno. Esto significa que el n\u00facleo del n\u00facleo interno podr\u00eda estar hecho de un tipo diferente de cristal, o hallarse en una fase distinta.<\/p>\n<p>La existencia de estas dos regiones claramente diferentes probablemente sea una pista que conduzca a descubrimientos de gran importancia sobre c\u00f3mo ha estado evolucionado el n\u00facleo interno, tal como valora Song.<\/p>\n<p>seryhumano.com<\/p>\n<p>Fuente: noticiasdelaciencia.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Durante bastante tiempo se crey\u00f3 que el n\u00facleo de la Tierra ten\u00eda solo dos regiones principales claramente diferenciadas: la parte m\u00e1s externa, conocida como n\u00facleo externo, y la m\u00e1s interna, referida como n\u00facleo interno.\u00a0 Hace varios a\u00f1os se lleg\u00f3 a la conclusi\u00f3n de que este n\u00facleo interno alberga a su vez a otro, a\u00fan m\u00e1s&hellip;<\/p>\n","protected":false},"author":2,"featured_media":18643,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122],"tags":[143],"class_list":["post-18570","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cultura","tag-concepto-del-proyecto","category-122","description-off"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Caracter\u00edsticas del centro de la Tierra<\/title>\n<meta name=\"description\" content=\"Durante bastante tiempo se crey\u00f3 que el n\u00facleo de la Tierra ten\u00eda solo dos regiones principales claramente diferenciadas: la parte m\u00e1s externa, conocida como n\u00facleo externo, y la m\u00e1s interna, referida como n\u00facleo interno.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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