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🦾 Ядро Земли остановилось?


less than 1m read
·Nov 3, 2024

Ряд исследователей заподозрили ядро Земли в остановке. Но как вообще смогли это определить, если внутренности нашей планеты никто никогда не видел?

По землетрясениям есть особый тип землетрясений — дуплеты. Это двойные землетрясения, у которых где-то глубоко есть общий эпицентр, и волны распространяются в разные стороны, вызывая колебания на разных участках поверхности.

Сопоставляя характер и скорость прохождения сейсмических волн через внутренние области, можно определить характеристики внутренних слоев планеты и конкретно внутреннего ядра. В 2009 году появились сильные свидетельства в пользу его остановки.

Разница в скорости распространения волн через внутреннее ядро улетучилась. Затем данные указали на то, что оно вновь начало раскручиваться, но в противоположную сторону. Данные были похожи на данные, собранные в 70-х годах, и из чего исследователи сделали вывод, что характер вращения внутреннего ядра имеет определенную цикличность.

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