{"id":86957,"date":"2022-01-15T19:25:00","date_gmt":"2022-01-15T17:25:00","guid":{"rendered":"https:\/\/life.karpat.in.ua\/?p=86957"},"modified":"2022-01-15T16:24:18","modified_gmt":"2022-01-15T14:24:18","slug":"mikozben-a-klimaert-aggodunk-gyorsabban-hul-a-fold-belseje-mint-eddig-gondoltak","status":"publish","type":"post","link":"https:\/\/life.karpat.in.ua\/?p=86957&lang=hu","title":{"rendered":"Mik\u00f6zben a kl\u00edm\u00e1\u00e9rt agg\u00f3dunk, gyorsabban h\u0171l a F\u00f6ld belseje, mint eddig gondolt\u00e1k"},"content":{"rendered":"\n

Mik\u00f6zben az emberis\u00e9g a kl\u00edma meleged\u00e9se miatt agg\u00f3dik, a tud\u00f3sok a m\u00e9lybe \u00e9s a t\u00e1voli j\u00f6v\u0151be is tekintenek: a Z\u00fcrichi M\u0171szaki Egyetem (ETH) kutat\u00f3i meg\u00e1llap\u00edtott\u00e1k, hogy a F\u00f6ld belseje val\u00f3sz\u00edn\u0171leg sokkal gyorsabban h\u0171l, mint azt kor\u00e1bban felt\u00e9telezt\u00e9k.<\/strong><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

A bolyg\u00f3 belsej\u00e9nek k\u00eds\u00e9rleti \u00faton t\u00f6rt\u00e9n\u0151 vizsg\u00e1lata eg\u00e9szen nyilv\u00e1nval\u00f3 okok miatt \u00fctk\u00f6zik neh\u00e9zs\u00e9gekbe: a f\u00f6ldmag mintegy 3000 kilom\u00e9ter m\u00e9lys\u00e9gben kezd\u0151dik, h\u0151m\u00e9rs\u00e9klete 5-6 ezer Celsius-foknak felel meg. Az ETH szak\u00e9rt\u0151i ez\u00e9rt laborat\u00f3riumi k\u00f6r\u00fclm\u00e9nyek k\u00f6z\u00f6tt szimul\u00e1lt\u00e1k a f\u00f6ldmag \u00e9s a f\u00f6ldk\u00f6peny k\u00f6zti r\u00e9teget. Ez a hat\u00e1rr\u00e9teg az\u00e9rt fontos, mert a viszk\u00f3zus k\u00f6peny itt k\u00f6zvetlen kapcsolatba l\u00e9p a mag k\u00fclsej\u00e9nek forr\u00f3 vas- \u00e9s nikkelolvad\u00e9k\u00e1val. A h\u0151m\u00e9rs\u00e9kleti gr\u00e1diens nagyon nagy a k\u00e9t r\u00e9teg k\u00f6z\u00f6tt, ez\u00e9rt itt potenci\u00e1lisan nagy h\u0151 \u00e1ramlik. A hat\u00e1rr\u00e9teg f\u0151k\u00e9nt a bridgmanit nev\u0171 \u00e1sv\u00e1nyb\u00f3l (egy nagyon s\u0171r\u0171 magn\u00e9zium-vas-szilik\u00e1tb\u00f3l) \u00e1ll.<\/p>\n\n\n\n

Motohiro Murakami, az ETH professzora \u00e9s a Carnegie Tudom\u00e1nyos Int\u00e9zet koll\u00e9g\u00e1i egy kifinomult m\u00e9r\u00e9si rendszert fejlesztettek ki, amely lehet\u0151v\u00e9 teszi, hogy laborban m\u00e9rj\u00e9k a bridgmanit h\u0151vezet\u0151 k\u00e9pess\u00e9g\u00e9t, m\u00e9ghozz\u00e1 olyan nyom\u00e1s \u00e9s h\u0151m\u00e9rs\u00e9klet mellett, amely a F\u00f6ld m\u00e9ly\u00e9ben uralkodik. \u201eEzzel a m\u00e9r\u00e9si rendszerrel ki tudtuk mutatni, hogy a bridgmanit h\u0151vezet\u0151 k\u00e9pess\u00e9ge mintegy m\u00e1sf\u00e9lszer nagyobb az eddig felt\u00e9telezettn\u00e9l\u201d \u2013 mondta Murakami. Ebb\u0151l azt a k\u00f6vetkeztet\u00e9st lehet levonni, hogy a magt\u00f3l a k\u00f6penyig nagyobb a h\u0151\u00e1raml\u00e1s az eddig v\u00e9ltn\u00e9l. Ez oda vezethet, hogy a lemeztektonika, amelyet a k\u00f6peny konvekci\u00f3s mozg\u00e1sai tartanak fenn, gyorsabban gyeng\u00fcl, lassul, mint azt kor\u00e1bban felt\u00e9telezt\u00e9k.<\/p>\n\n\n\n

\u201eEredm\u00e9nyeink \u00faj f\u00e9nyt vetnek a F\u00f6ld dinamik\u00e1j\u00e1nak v\u00e1ltoz\u00e1s\u00e1ra. Arra utalnak, hogy a F\u00f6ld m\u00e1s k\u0151zetbolyg\u00f3khoz, p\u00e9ld\u00e1ul a Merk\u00farhoz \u00e9s a Marshoz hasonl\u00f3an a v\u00e1rtn\u00e1l sokkal gyorsabban h\u0171l ki \u00e9s v\u00e1lik inakt\u00edvv\u00e1\u201d \u2013 mondta Murakami.<\/p>\n\n\n\n

(hvg.hu)<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Mik\u00f6zben az emberis\u00e9g a kl\u00edma meleged\u00e9se miatt agg\u00f3dik, a tud\u00f3sok a m\u00e9lybe \u00e9s a t\u00e1voli j\u00f6v\u0151be is tekintenek: a Z\u00fcrichi M\u0171szaki Egyetem (ETH) kutat\u00f3i meg\u00e1llap\u00edtott\u00e1k, hogy a F\u00f6ld belseje val\u00f3sz\u00edn\u0171leg sokkal gyorsabban h\u0171l, mint azt kor\u00e1bban felt\u00e9telezt\u00e9k.<\/p>\n","protected":false},"author":12,"featured_media":86958,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,596,11,592,598,39],"tags":[80631],"class_list":["post-86957","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cikkek","category-erdekes","category-kiemelt-tema","category-tarsadalom","category-tudomany","category-vilag","tag-fold-magja"],"_links":{"self":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/86957","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=86957"}],"version-history":[{"count":0,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/86957\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/media\/86958"}],"wp:attachment":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=86957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=86957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=86957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}