{"id":56710,"date":"2021-05-17T20:50:00","date_gmt":"2021-05-17T17:50:00","guid":{"rendered":"http:\/\/life.karpat.in.ua\/?p=56710"},"modified":"2021-05-17T15:58:39","modified_gmt":"2021-05-17T12:58:39","slug":"tevedtek-a-tudosok-az-utolso-jegkorszakrol","status":"publish","type":"post","link":"https:\/\/life.karpat.in.ua\/?p=56710&lang=hu","title":{"rendered":"T\u00e9vedtek a tud\u00f3sok az utols\u00f3 j\u00e9gkorszakr\u00f3l"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Az utols\u00f3 j\u00e9gkorszak az eddig v\u00e9ltn\u00e9l j\u00f3val hidegebb volt, a mai \u00e1tlagh\u0151m\u00e9rs\u00e9kletn\u00e9l 6 Celsius-fokkal h\u0171v\u00f6sebb \u2013 olvashat\u00f3 sv\u00e1jci, n\u00e9met \u00e9s amerikai kutat\u00f3knak a Nature c\u00edm\u0171 tudom\u00e1nyos lapban megjelent tanulm\u00e1ny\u00e1ban.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A szak\u00e9rt\u0151k munk\u00e1juk sor\u00e1n \u0151si talajvizet elemeztek. Az abban oldott, k\u00e9miailag nyugalmi \u00e1llapotban l\u00e9v\u0151 nemesg\u00e1zok elemz\u00e9s\u00e9b\u0151l kider\u00fcl, milyen h\u0151m\u00e9rs\u00e9kletek uralkodtak, amikor a v\u00edz a talajba sziv\u00e1rgott. A vizsg\u00e1latot, amelyben az Eawag v\u00edzkutat\u00f3 int\u00e9zet is r\u00e9szt vett, az amerikai Woods Hole Oceanogr\u00e1fiai Int\u00e9zet munkat\u00e1rsa, Alan Seltzer vezette.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A vil\u00e1g minden t\u00e1j\u00e1r\u00f3l sz\u00e1rmaz\u00f3 m\u00e1r megl\u00e9v\u0151 adatokat vagy \u00fajonnan vett talajv\u00edzmint\u00e1k adatait elemezt\u00e9k ki szisztematikusan, vil\u00e1gszint\u0171 sztenderdek alapj\u00e1n. Relat\u00edv kormeghat\u00e1roz\u00e1si m\u00f3dszerekkel l\u00e9trehoztak egy h\u0151m\u00e9rs\u00e9kleti g\u00f6rb\u00e9t. A legalacsonyabb \u00e9rt\u00e9ke az utols\u00f3 j\u00e9gkorszak, az utols\u00f3 glaci\u00e1lis maximum (LGM) cs\u00facspontj\u00e1nak felel meg.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00cdgy n\u00e9zhetett ki a F\u00f6ld a legut\u00f3bbi j\u00e9gkorszak cs\u00facs\u00e1n.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/life.karpat.in.ua\/wp-content\/uploads\/2021\/05\/fold.jpg\" alt=\"\" class=\"wp-image-56711\" width=\"549\" height=\"549\" srcset=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2021\/05\/fold.jpg 480w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2021\/05\/fold-300x300.jpg 300w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2021\/05\/fold-150x150.jpg 150w\" sizes=\"auto, (max-width: 549px) 100vw, 549px\" \/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Eszerint a glob\u00e1lis \u00e1tlagh\u0151m\u00e9rs\u00e9klet hat Celsius-fokkal alacsonyabb volt a main\u00e1l, teh\u00e1t 14 Celsius-helyett 8 Celsius-fok volt. Eddig a tud\u00f3sok \u00fagy v\u00e9lt\u00e9k, a h\u0151m\u00e9rs\u00e9klet csak 3-5 Celsius-fokkal lehetett alacsonyabb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Az eredm\u00e9nyek egybev\u00e1gnak \u00faj, fosszilis tengeri planktonokon v\u00e9gzett \u00e9rt\u00e9kel\u00e9sekkel. Ezek abb\u00f3l indulnak ki, hogy a kl\u00edma \u00e9rz\u00e9kenyebb a l\u00e9gk\u00f6rben l\u00e9v\u0151 sz\u00e9n-dioxidra, mint ahogyan azt kor\u00e1bbi tanulm\u00e1nyok felt\u00e9telezt\u00e9k.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ez nem j\u00f3 h\u00edr a j\u00f6v\u0151beli glob\u00e1lis felmeleged\u00e9s szempontj\u00e1b\u00f3l. A F\u00f6ld ugyanis eszerint az eddigi becsl\u00e9sekhez k\u00e9pest er\u0151teljesebben felmelegedhet \u2013 mondta Werner Aeschbach, a Heidelbergi Egyetem k\u00f6rnyezetfizikusa.<\/p>\n\n\n\n<p class=\"has-text-align-right wp-block-paragraph\"><strong><a href=\"https:\/\/m.hvg.hu\/tudomany\/20210513_jegkorszak_homerseklet_meres_kutatas_foldtortenet_globalis_felmelegedes#rss\">(hvg.hu)<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Az utols\u00f3 j\u00e9gkorszak az eddig v\u00e9ltn\u00e9l j\u00f3val hidegebb volt, a mai \u00e1tlagh\u0151m\u00e9rs\u00e9kletn\u00e9l 6 Celsius-fokkal h\u0171v\u00f6sebb \u2013 olvashat\u00f3 sv\u00e1jci, n\u00e9met \u00e9s amerikai kutat\u00f3knak a Nature c\u00edm\u0171 tudom\u00e1nyos lapban megjelent tanulm\u00e1ny\u00e1ban.<\/p>\n","protected":false},"author":12,"featured_media":56712,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,596,49,39],"tags":[50415,50414,50416],"class_list":["post-56710","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cikkek","category-erdekes","category-hirek","category-vilag","tag-atlaghomerseklet","tag-jegkorszak","tag-osi-talajviz"],"_links":{"self":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/56710","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=56710"}],"version-history":[{"count":0,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/56710\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/media\/56712"}],"wp:attachment":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=56710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=56710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=56710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}