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https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f6906c3d-e1734624874353.jpeg?resize=747,418 747w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f6906c3d-e1734624874353.jpeg?resize=550,309 550w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f6906c3d-e1734624874353.jpeg?resize=255,143 255w" sizes="(max-width: 800px) 100vw, 800px" /> <figcaption> <span class="image__caption">Confirmado: la rotaci贸n del n煤cleo interno de la Tierra se ha ralentizado.</span> </figcaption> </figure> </header> <div class="page-content wp-block-post-content"> <div class="entry-content entry-content--single"> <div class="article-meta"> <div class="article-meta__content"> <div class="article-meta__authors"> <div class="article-meta__author"> <div class="article-meta__author-avatar"> <img width="36" height="48" src="https://www.muyinteresante.com/wp-content/uploads/sites/5/2023/05/22/646b8d615b6ef.jpeg?w=36" class="avatar avatar-48 photo wp-post-image" alt="Sarah Romero" loading="lazy" srcset="https://www.muyinteresante.com/wp-content/uploads/sites/5/2023/05/22/646b8d615b6ef.jpeg 194w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2023/05/22/646b8d615b6ef.jpeg?resize=122,163 122w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2023/05/22/646b8d615b6ef.jpeg?resize=120,160 120w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2023/05/22/646b8d615b6ef.jpeg?resize=180,240 180w" sizes="auto, (max-width: 36px) 100vw, 36px" /> </div> <div class="article-meta__author-content"> <p class="article-meta__author-published"> <span class="article-meta__author-label"> Publicado por </span> <a href="https://www.muyinteresante.com/autores/sarah-romero/" class="article-meta__author-name" aria-label="Ir a la p谩gina de archivo Sarah Romero" > Sarah Romero </a> </p> <p class="article-meta__author-bio"> Periodista cient铆fica </p> </div> </div> </div> <div class="article-meta__info"> <span class="article-meta__info-date"> Creado: <time datetime="2024-06-17T22:00:00+00:00"> 17.06.2024 | 22:00 </time> </span> <span class="article-meta__info-date"> Actualizado: <time datetime="2024-06-19T15:36:29+00:00"> 19.06.2024 | 15:36 </time> </span> </div> </div> </div> <p>En lo más profundo del corazón de nuestro planeta <b>está pasando algo sorprendente. </b>Los científicos han descubierto que el núcleo interno de la Tierra, una esfera sólida de hierro y níquel con un radio de aproximadamente 1.220 kilómetros, está ralentizándose. Así lo muestra una nueva investigación liderada por un equipo de la Universidad del Sur de California (USC), que proporciona evidencia de que el núcleo interno comenzó a disminuir su velocidad alrededor de 2010, moviéndose más lentamente que la superficie de la Tierra.<b> Es oficial. El núcleo gira más lentamente que la superficie del planeta.</b></p> <div class="wp-block-zinet-platform-jw-player"> <div class="video jw-video" data-media-id="QJiWauyC" data-media-type="video"></div> </div> <figure class="wp-block-image size-large"><img decoding="async" src="https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f6906c3d.jpeg" alt="" class="wp-image-181311"><figcaption class="wp-element-caption">Confirmado: la rotación del núcleo interno de la Tierra se ha ralentizado - Midjourney/Sarah Romero</figcaption></figure><div class="banner-slot-wrapper"><div class="banner henneoHB_desktop" style="--min-height-sm: auto;--min-height-md: 250px;--min-height-lg: 250px;" id="intext"></div></div> <h3 class="wp-block-heading">Pruebas irrefutables</h3> <p>El núcleo interno terrestre es una región que sigue siendo una de las partes menos comprendidas pero más intrigantes de nuestro planeta y <b>desempeña un papel vital</b> tanto en la configuración del <a href="https://www.muyinteresante.com/actualidad/65006.html" target="_blank">campo magnético de la Tierra</a> (el campo magnético de nuestro planeta se genera por el movimiento del núcleo externo de hierro líquido que rodea al núcleo interno sólido, por ejemplo), como en la actividad tectónica o la dinámica general de nuestro planeta.</p> <p>"Cuando vi por primera vez los sismogramas que insinuaban este cambio, me quedé perplejo", explicó el científico terrestre John Vidale de la USC. "Pero cuando encontramos dos docenas de observaciones más que señalaban el mismo patrón,<b> el resultado fue ineludible</b>. El núcleo interno se había ralentizado por primera vez en muchas décadas. Otros científicos han defendido recientemente modelos similares y diferentes, pero nuestro último estudio proporciona la resolución más convincente".</p> <div class="wp-block-post post-184314 post type-post status-publish format-standard has-post-thumbnail hentry category-actualidad category-ciencia tag-ciencia tag-estrellas tag-exoplanetas tag-planeta-mercurio tag-planetas tag-radiacion tag-sol tag-tierra wp-block-zinet-platform-post-picker"> <aside class="post-card post-card--has-variant-lg-horizontal has-aspect-ratio-16-9 has-link post-card--is-related wp-block-zinet-platform-card has-background has-neutrals-200-background-color"> <div class="post-card__media-wrapper"> <figure class="image post-card__media size-card-lg-horizontal-landscape"> <img width="255" height="143" src="https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=255,143" class="wp-image-181281" alt="Hay un planeta que desconcierta a los científicos (y te explicamos por qué)" decoding="async" fetchpriority="auto" loading="lazy" srcset="https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg 1456w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=300,168 300w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=768,430 768w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=1024,574 1024w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=291,163 291w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=635,357 635w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=195,109 195w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=120,67 120w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=353,198 353w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=180,101 180w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=747,420 747w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=550,309 550w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=255,143 255w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=1140,641 1140w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/667020f58bd8e.jpeg?resize=1370,770 1370w" sizes="auto, (max-width: 255px) 100vw, 255px"> </figure> </div> <div class="post-card__content"> <div class="post-card__meta"> <div class="categories post-card__categories"> <ul class="categories__list"> <li> Actualidad </li> <li> Ciencia </li> </ul> </div> </div> <p class="post-card__title"> <a href="https://www.muyinteresante.com/actualidad/65112.html" class="post-card__title-link">Hay un planeta que desconcierta a los científicos (y te explicamos por qué)</a> </p> <div class="post-card__authors"> <ul> <li> Sarah Romero </li> </ul> </div> </div> </aside> </div> <h3 class="wp-block-heading">¿Está ralentizándose? ¿Qué significa esto?</h3> <p>Este descubrimiento plantea importantes cuestiones sobre la mecánica planetaria y podría afectar tanto a la estabilidad del campo magnético de la Tierra como a la duración de nuestros días. <b>Este cambio en el núcleo interno de la Tierra podría estar aumentando la duración de los días,</b> aunque no será algo perceptible para el común de los mortales, ya que las consecuencias serían en fracciones de segundos extra (del orden de una milésima de segundo). "Es muy difícil notarlo, del orden de una milésima de segundo, casi perdido en el ruido de los océanos y la atmósfera agitados", dice Vidale.</p> <p>Al observar datos sísmicos de las últimas décadas registrados alrededor de las Islas Sandwich del Sur sobre 121 terremotos repetidos que ocurrieron entre 1991 y 2023, así como datos de pruebas nucleares soviéticas gemelas entre 1971 y 1974, y otros estudios del núcleo interno. Respecto a los terremotos repetidos, son muy interesantes porque <b>se originan en el mismo lugar y producen patrones de ondas sísmicas (sismogramas) idénticos,</b> dando una base consistente para estudiar el interior de la Tierra.</p> <figure class="wp-block-image size-large"><img loading="lazy" decoding="async" src="https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=1024,574" alt="" class="wp-image-181310" width="1024" height="574" srcset="https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg 1456w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=300,168 300w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=768,430 768w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=1024,574 1024w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=291,163 291w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=635,357 635w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=195,109 195w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=120,67 120w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=353,198 353w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=180,101 180w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=747,420 747w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=550,309 550w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=255,143 255w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=1140,639 1140w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f5575ef5.jpeg?resize=1370,768 1370w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><figcaption class="wp-element-caption">Se mueve más lentamente que la superficie terrestre - Midjourney/Sarah Romero</figcaption></figure> <p>Los científicos descubrieron que el núcleo interno comenzó a desacelerarse alrededor de 2010 y lo que está sucediendo ahora es que <b>se está moviendo hacia atrás,</b> algo que afecta sutilmente la rotación de la Tierra en el espacio. Pero la realidad es esta: en relación con su velocidad en décadas anteriores, el núcleo interno se está desacelerando; se está invirtiendo y retrocediendo respecto a la superficie del planeta.</p> <h3 class="wp-block-heading">¿Y por qué se está ralentizando?</h3> <p>La causa exacta de la desaceleración del núcleo interno aún no está clara, pero los investigadores <b>proponen dos hipótesis</b>: 1) que el movimiento turbulento del núcleo externo de hierro líquido, que es el responsable de generar el campo magnético terrestre, esté ejerciendo una fuerza de arrastre sobre el núcleo interno, lo que ralentizaría su rotación; o 2) que las interacciones gravitacionales con las zonas más densas del manto rocoso que se encuentra sobre el núcleo externo podrían estar atrayendo al núcleo interno, contribuyendo aún más a su desaceleración.</p> <figure class="wp-block-image size-large"><img loading="lazy" decoding="async" src="https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=1024,574" alt="" class="wp-image-181309" width="1024" height="574" srcset="https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg 1456w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=300,168 300w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=768,430 768w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=1024,574 1024w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=291,163 291w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=635,357 635w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=195,109 195w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=120,67 120w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=353,198 353w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=180,101 180w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=747,420 747w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=550,309 550w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=255,143 255w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=1140,639 1140w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f4931313.jpeg?resize=1370,768 1370w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><figcaption class="wp-element-caption">Durante años, muchos científicos creyeron que el núcleo interno giraba más rápido que la superficie de la Tierra. - Midjourney/Sarah Romero</figcaption></figure> <p><b>¿Qué va a pasar ahora?</b> El equipo quiere ahora trazar la trayectoria del núcleo interno con mayor detalle para revelar exactamente por qué está cambiando y delimitar si es acertada alguna de estas hipótesis, ya que la rotación del núcleo interno es un factor importante en el proceso de <b>geodinamo</b> que genera el campo magnético de la Tierra y cualquier cambio podría, potencialmente, afectar a la fuerza y la estabilidad del campo magnético, que protege al planeta de la dañina radiación solar. Recordemos que un campo magnético estable es esencial para mantener la atmósfera y sustentar la vida en la Tierra. Por el momento, los efectos que tendrá esta modificación son casi imposibles de predecir, pero este descubrimiento abre una nueva vía de investigación, ofreciendo una comprensión más profunda del complejo núcleo interno de la Tierra.</p> <p>"La danza del núcleo interno podría ser incluso más animada de lo que sabemos hasta ahora", concluye Vidale.</p> <figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="1024" height="1024" src="https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg" alt="" class="wp-image-181308" srcset="https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg 1024w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=150,150 150w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=300,300 300w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=768,768 768w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=163,163 163w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=635,635 635w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=195,195 195w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=120,120 120w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=353,353 353w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=180,180 180w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=747,747 747w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=550,550 550w, https://www.muyinteresante.com/wp-content/uploads/sites/5/2024/06/17/66705f3dec324.jpeg?resize=255,255 255w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><figcaption class="wp-element-caption">Esto podría alterar la duración del día en fracciones de segundo - Midjourney/Sarah Romero</figcaption></figure> <h3 class="wp-block-heading">Referencias: </h3> <ul class="wp-block-list"> <li><i><b>Wei Wang, John E. Vidale, Guanning Pang, Keith D. Koper, Ruoyan Wang. Inner core backtracking by seismic waveform change reversals. Nature, 2024; DOI: 10.1038/s41586-024-07536-4</b></i></li> <li><i>Wang, W., & Vidale, J. (2022). Seismological observation of Earth’s oscillating inner core. Science Advances, 8. https://doi.org/10.1126/sciadv.abm9916.</i></li> <li><i>Sumita, I., & Bergman, M. (2022). Inner core dynamics. Earth's Core. https://doi.org/10.1016/B978-0-444-53802-4.00143-3.</i></li> <li><i>Yang, Y., & Song, X. (2020). Temporal Changes of the Inner Core From Globally Distributed Repeating Earthquakes. Journal of Geophysical Research: Solid Earth, 125. https://doi.org/10.1029/2019JB018652.</i></li> </ul> <footer class="article__footer"> <div class="news-collection news-collection--has-lg-font-size news-collection--is-default article__tags"> <div class="news-collection__wrapper"> <div class="news-collection__title"> <span> Temas: </span> </div> <div class="news-collection__items"> <a href="https://www.muyinteresante.com/temas/campo-magnetico/" class="button button--is-text news-collection__item-link" > <span> Campo magn茅tico </span> </a> <a href="https://www.muyinteresante.com/temas/ciencia/" class="button button--is-text news-collection__item-link" > <span> Ciencia </span> </a> <a href="https://www.muyinteresante.com/temas/hierro/" class="button button--is-text news-collection__item-link" > <span> Hierro </span> </a> <a href="https://www.muyinteresante.com/temas/magnetismo/" class="button button--is-text news-collection__item-link" > <span> Magnetismo </span> </a> <a 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