{"id":148890,"date":"2023-05-27T22:36:00","date_gmt":"2023-05-27T19:36:00","guid":{"rendered":"https:\/\/life.karpat.in.ua\/?p=148890"},"modified":"2023-05-27T05:04:24","modified_gmt":"2023-05-27T02:04:24","slug":"komoly-eghajlatvaltozas-formalodik-az-antarktisz-tersegeben","status":"publish","type":"post","link":"https:\/\/life.karpat.in.ua\/?p=148890&lang=hu","title":{"rendered":"Komoly \u00e9ghajlatv\u00e1ltoz\u00e1s form\u00e1l\u00f3dik az Antarktisz t\u00e9rs\u00e9g\u00e9ben"},"content":{"rendered":"\n

Harminc sz\u00e1zal\u00e9kkal lassultak a m\u00e9lytengeri \u00e1ramlatok az Antarktisz k\u00f6r\u00fcl az ut\u00f3bbi h\u00e1rom \u00e9vtizedben, aminek komoly k\u00f6vetkezm\u00e9nyei lehetnek a F\u00f6ld \u00e9ghajlat\u00e1ra, a tengerszint alakul\u00e1s\u00e1ra \u00e9s az \u00f3ce\u00e1nok \u00f6kosziszt\u00e9m\u00e1j\u00e1ra \u2013 \u00e1llap\u00edtott\u00e1k meg ausztr\u00e1l kutat\u00f3k egy p\u00e9nteken k\u00f6zz\u00e9tett tanulm\u00e1nyban.<\/strong><\/p>\n\n\n\n

H\u00e1rom \u00e9vtized alatt harmad\u00e1val cs\u00f6kkent az \u00e1ramlatok sebess\u00e9ge<\/h2>\n\n\n\n

Az oxig\u00e9nben gazdag antarktiszi fen\u00e9kv\u00edz (AABW) akkor keletkezik, amikor a \u201es\u0171r\u0171\u201d oxig\u00e9nben gazdag v\u00edz nagy m\u00e9lys\u00e9gekbe s\u00fcllyed le a tengeri j\u00e9gpajzsr\u00f3l. Ez a v\u00edz azt\u00e1n \u00e9szak fel\u00e9 mozdul el a tengerfen\u00e9k ment\u00e9n m\u00e9lytengeri \u00e1ramlatok form\u00e1j\u00e1ban, amelyek a glob\u00e1lis \u00f3ce\u00e1nt\u00f6meg mintegy 40 sz\u00e1zal\u00e9k\u00e1t teszi ki.<\/p>\n\n\n

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

Ez a v\u00edzmozg\u00e1s hajtja a tengeri \u00e1ramlatok glob\u00e1lis h\u00e1l\u00f3zat\u00e1t, a d\u00e9li-\u00f3ce\u00e1ni buk\u00f3kering\u00e9st, amely \u00e1trendezi a h\u0151 \u00e9s a t\u00e1panyagok eloszl\u00e1s\u00e1t, a lassul\u00e1sa emiatt hat\u00e1ssal lehet a tengeri \u00f6kosziszt\u00e9m\u00e1kra.<\/p>\n\n\n

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

Ausztr\u00e1l kutat\u00f3k egy \u00faj m\u00f3dszerrel kimutatt\u00e1k, hogy a d\u00e9li-\u00f3ce\u00e1ni buk\u00f3kering\u00e9s sebess\u00e9ge 30 sz\u00e1zal\u00e9kkal cs\u00f6kkent 1992 \u00e9s 2017 k\u00f6z\u00f6tt.<\/p>\n\n\n\n

Glob\u00e1lis kihat\u00e1sai lehetnek v\u00e1ltoz\u00e1soknak<\/h2>\n\n\n\n

A lassul\u00e1s ezek szerint m\u00e1r a v\u00e1rtn\u00e1l sokkal kor\u00e1bban bek\u00f6vetkezik, egy m\u00e1rciusban k\u00f6zz\u00e9tett tanulm\u00e1nyban ugyanis m\u00e9g azt j\u00f3solt\u00e1k, hogy 2050-re lehet majd 40 sz\u00e1zal\u00e9k k\u00f6r\u00fcl.<\/p>\n\n\n\n

A gleccserek olvad\u00e1sa k\u00f6vetkezt\u00e9ben cs\u00f6kken annak a s\u0171r\u0171, oxig\u00e9nben gazdag v\u00edznek a mennyis\u00e9ge, amely le tud s\u00fcllyedni a nagyobb m\u00e9lys\u00e9gekbe, \u00e9s ezzel lassulnak a m\u00e9lytengeri \u00e1ramlatok.<\/p>\n\n\n

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

\u201eAhhoz a gondolathoz m\u00e1r hozz\u00e1szoktunk, hogy az Antarktisz jeg\u00e9nek olvad\u00e1sa k\u00f6vetkezt\u00e9ben emelkedik a tengerszint. De ez az \u00faj tanulm\u00e1ny arra is r\u00e1mutat, hogy az olvad\u00e1s a tenger m\u00e9ly\u00e9nek szerkezet\u00e9re \u00e9s az \u00f3ce\u00e1nok k\u00e9mi\u00e1j\u00e1ra is hat\u00e1st gyakorol\u201d \u2013 mondta el Steve Rintoul, a kutat\u00e1sban r\u00e9szt vev\u0151 ausztr\u00e1l nemzeti tudom\u00e1nyos \u00fcgyn\u00f6ks\u00e9g (CSIRO) munkat\u00e1rsa.<\/p>\n\n\n\n

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

Harminc sz\u00e1zal\u00e9kkal lassultak a m\u00e9lytengeri \u00e1ramlatok az Antarktisz k\u00f6r\u00fcl az ut\u00f3bbi h\u00e1rom \u00e9vtizedben, aminek komoly k\u00f6vetkezm\u00e9nyei lehetnek a F\u00f6ld \u00e9ghajlat\u00e1ra, a tengerszint alakul\u00e1s\u00e1ra \u00e9s az \u00f3ce\u00e1nok \u00f6kosziszt\u00e9m\u00e1j\u00e1ra \u2013 \u00e1llap\u00edtott\u00e1k meg ausztr\u00e1l kutat\u00f3k egy p\u00e9nteken k\u00f6zz\u00e9tett tanulm\u00e1nyban.<\/p>\n","protected":false},"author":12,"featured_media":148892,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,596,592,598,39],"tags":[24362,587791,587792,10443,587790],"class_list":["post-148890","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cikkek","category-erdekes","category-tarsadalom","category-tudomany","category-vilag","tag-antarktisz","tag-aramlasok-sebessege","tag-oceanok-okoszisztemaja","tag-olvadas","tag-tengerszint-emelkedes"],"_links":{"self":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/148890","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=148890"}],"version-history":[{"count":1,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/148890\/revisions"}],"predecessor-version":[{"id":148894,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/148890\/revisions\/148894"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/media\/148892"}],"wp:attachment":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=148890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=148890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=148890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}