{"id":5594,"date":"2023-01-25T16:56:43","date_gmt":"2023-01-25T16:56:43","guid":{"rendered":"https:\/\/www.africa-press.net\/guinee-equatoriale\/politique\/earths-inner-core-may-have-stopped-spinning-and-could-be-reversing-its-rotation"},"modified":"2023-01-25T18:33:50","modified_gmt":"2023-01-25T18:33:50","slug":"earths-inner-core-may-have-stopped-spinning-and-could-be-reversing-its-rotation","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/guinee-equatoriale\/toutes-les-actualites\/earths-inner-core-may-have-stopped-spinning-and-could-be-reversing-its-rotation","title":{"rendered":"Earth\u2019s Inner Core May Have Stopped Spinning\u2026 And Could Be Reversing Its Rotation"},"content":{"rendered":"

Africa-Press – Guinee Equatoriale. <\/strong><\/span>Researchers have cautioned that their findings aren\u2019t necessarily marking the beginning of the end, instead urging that nothing overtly \u00ab bad \u00bb will take place in the near future.<\/p>\n

Seismologists have published a study in the journal Nature Geoscience revealing what they believe to be the reversal of the Earth\u2019s inner core, which could potentially affect the Earth\u2019s own rotation.<\/p>\n

In the study, researchers Xi Yang and Xiaodong Song of Peking University, believe the inner core has actually paused its rotation process after looking at data that measured changes in both the waveform and travel time of seismic waves since the 1960s.<\/p>\n

While reviewing data they found officials determined that seismic waves showed little activity for about a decade until 2009, when the \u201ctemporal changes in the waveform shape simultaneously and consistently disappeared,\u201d suggesting it stopped rotating completely.<\/p>\n

Post 2009, the seismic changes further showed that those patterns predating the \u201cpause\u201d returned, but that the waves were crossing parts of the inner core, suggesting it was now rotating in the opposite direction. Song and Yang believe the inner core could oscillate with a roughly 70-year periodicity while switching directions every 35 years or so.<\/p>\n

Those oscillations, they think, could help explain 60 to 70 year variations in the length of Earth\u2019s days.<\/p>\n

If their hypothesis is correct, nothing \u201cbad\u201d should happen to life on planet Earth. The reversal shouldn\u2019t affect Earth\u2019s magnetic field so strongly the north pole and the south pole would flip, for instance, but it could shorten the length of the day by a fraction of a millisecond over the course of a year.<\/p>\n

\u201cIt has effects on the magnetic field and the Earth\u2019s rotation, and probably the surface processes and climate,\u201d said Song. \u201cHard to say good or bad, but something to pay attention to as part of the Earth\u2019s global change.\u201d<\/p>\n

\u201cIn theory it has been going on for a long time but we only have observations over a few decades,\u201d Song added. One researcher has cautioned the results of the study.<\/p>\n

Vidale argues there is another theory in the geoscience community which says the inner core does change its rotation, but at shorter intervals than the 70-year cycle hypothesized by Yang and Song. \u201cIn all likelihood, it\u2019s irrelevant to life on the surface, but we don\u2019t actually know what\u2019s happening,\u201d says Vidale. \u201cIt\u2019s incumbent on us to figure it out.\u201d<\/p>\n

Pour plus d’informations et d’analyses sur la Guinee Equatoriale<\/a>, suivez Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Guinee Equatoriale. Researchers have cautioned that their findings aren\u2019t necessarily marking the beginning of the end, instead urging that nothing overtly \u00ab bad \u00bb will take place in the near future. Seismologists have published a study in the journal Nature Geoscience revealing what they believe to be the reversal of the Earth\u2019s inner […]<\/p>\n","protected":false},"author":82,"featured_media":5593,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[36,49,50],"class_list":["post-5594","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-guinee-equatoriale","tag-guinee-equatoriale"],"yoast_head":"\nEarth\u2019s Inner Core May Have Stopped Spinning\u2026 And Could Be Reversing Its Rotation - Guin\u00e9e \u00e9quatoriale<\/title>\n<meta name=\"description\" content=\"Researchers have cautioned that their findings aren\u2019t necessarily marking the beginning of the end, instead urging that ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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