{"id":52593,"date":"2020-06-14T06:50:44","date_gmt":"2020-06-14T11:50:44","guid":{"rendered":"https:\/\/joanpa.com\/2020\/06\/hallan-misteriosas-estructuras-solidas-cerca-del-nucleo-de-la-tierra\/"},"modified":"2020-06-14T06:50:44","modified_gmt":"2020-06-14T11:50:44","slug":"hallan-misteriosas-estructuras-solidas-cerca-del-nucleo-de-la-tierra","status":"publish","type":"post","link":"https:\/\/joanpa.com\/?p=52593","title":{"rendered":"Hallan misteriosas estructuras s\u00f3lidas cerca del n\u00facleo de la Tierra"},"content":{"rendered":"\n

<\/p>\n\n\n\n

Un equipo de investigadores geof\u00edsicos de la Universidad de Maryland ha encontrado algo incre\u00edble: nuevas estructuras gigantes y totalmente desconocidas en el interior de la Tierra. El hallazgo ha sido publicado en la revista Science. Pero, \u00bfqu\u00e9 significa exactamente esto?<\/p>\n\n\n\n

Estas estructuras son b\u00e1sicamente \u00e1reas de roca muy densas y calientes y han sido descubiertas en las profundidades del Oc\u00e9ano Pacifico (entre las islas volc\u00e1nicas Marquesas y Hawai) entre el n\u00facleo y manto de la Tierra. (?Doyeon Kim\/Universidad de Maryland) <\/p>\n\n\n\n

De momento los cient\u00edficos desconocen su composici\u00f3n que sigue siendo un misterio.
Fueron halladas gracias a los terremotos ya que cuando estos se producen generan ondas s\u00edsmicas bajo la superficie terrestre que pueden viajar miles de kil\u00f3metros. <\/p>\n\n\n\n

Cuando estas ondas encuentran modificaciones en temperatura, composici\u00f3n o densidad de las rocas se modifican y estas modificaciones y ecos se registran en sism\u00f3grafos ubicados en todo el mundo. <\/p>\n\n\n\n

Para ello usaron un algoritmo muy concreto que analiz\u00f3 7.000 sismogramas de cientos de terremotos de magnitud 6.5 y superiores medidos en esa regi\u00f3n entre los a\u00f1os 1990-2018. <\/p>\n\n\n\n

Los ecos de las estructuras cercanas llegan m\u00e1s r\u00e1pido y los de las m\u00e1s grandes son m\u00e1s fuertes. Al medir el tiempo de viaje y la amplitud de estos ecos a medida que llegan a los sism\u00f3metros, los cient\u00edficos pueden desarrollar modelos de las propiedades f\u00edsicas de las rocas <\/p>\n\n\n\n

Estos ecos fueron m\u00e1s fuertes bajo Haw\u00e1i donde creen que la estructura puede ser mucho mas fuerte, considerada la mayor de entre todas las que ya se hab\u00edan encontrado previamente. <\/p>\n\n\n\n

Bajo las islas Marquesas, en la Polinesia francesa, tambi\u00e9n se ha detectado esta estructura, algo que ni los investigadores imaginaban. <\/p>\n\n\n\n

Nuestra Tierra esta compuesta de varias capas: corteza (la mas fina de todas), el manto y el n\u00facleo. El manto tiene un espesor de unos 3.000 kil\u00f3metros y el n\u00facleo es la capa mas interna compuesta de dos partes, un n\u00facleo externo l\u00edquido y otro interno s\u00f3lido. <\/p>\n\n\n\n

El n\u00facleo est\u00e1 compuesto fundamentalmente por hierro, con 5-10 % de n\u00edquel y menores cantidades de elementos m\u00e1s ligeros, tal vez azufre y ox\u00edgeno.
Tiene un radio de cerca de 3500 y representa el 32 % de la masa total de la Tierra (via NASA) <\/p>\n\n\n\n

Estos hallazgos permitir\u00e1n arrojar luz sobre una m\u00e1s detallada composici\u00f3n del interior de nuestro planeta permiti\u00e9ndonos conocer mejor el origen y evoluci\u00f3n de la Tierra. <\/p>\n\n\n\n

Fuente Mar G\u00f3mez <\/p>\n\n\n\n

\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

Un equipo de investigadores geof\u00edsicos de la Universidad de Maryland ha encontrado algo incre\u00edble: nuevas estructuras gigantes y totalmente desconocidas en el interior de la Tierra. El hallazgo ha sido publicado en la revista Science. Pero, \u00bfqu\u00e9 significa exactamente esto? Estas estructuras son b\u00e1sicamente \u00e1reas de roca muy densas y calientes y han sido descubiertas […]<\/p>\n","protected":false},"author":1,"featured_media":52592,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","jetpack_publicize_message":"","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":[13,3],"tags":[],"class_list":{"0":"post-52593","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-internacional","8":"category-tecnologia"},"yoast_head":"\nHallan misteriosas estructuras s\u00f3lidas cerca del n\u00facleo de la Tierra * Joanpa.com<\/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:\/\/joanpa.com\/?p=52593\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hallan misteriosas estructuras s\u00f3lidas cerca del n\u00facleo de la Tierra * Joanpa.com\" \/>\n<meta property=\"og:description\" content=\"Un equipo de investigadores geof\u00edsicos de la Universidad de Maryland ha encontrado algo incre\u00edble: nuevas estructuras gigantes y totalmente desconocidas en el interior de la Tierra. 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