{"id":35717,"date":"2020-11-12T17:31:30","date_gmt":"2020-11-12T15:31:30","guid":{"rendered":"http:\/\/life.karpat.in.ua\/?p=35717"},"modified":"2020-11-12T00:35:28","modified_gmt":"2020-11-11T22:35:28","slug":"millio-eves-osi-to-rejtozik-a-gronlandi-jegtakaro-alatt","status":"publish","type":"post","link":"https:\/\/life.karpat.in.ua\/?p=35717&lang=hu","title":{"rendered":"Milli\u00f3 \u00e9ves \u0151si t\u00f3 rejt\u0151zik a gr\u00f6nlandi j\u00e9gtakar\u00f3 alatt"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>\u00d3ri\u00e1si, \u0151si t\u00f3 maradv\u00e1nyait fedezt\u00e9k fel Gr\u00f6nland alatt, az orsz\u00e1g \u00e9szaknyugati r\u00e9sz\u00e9n, a j\u00e9gtakar\u00f3 m\u00e9ly\u00e9n. Egy most publik\u00e1lt tanulm\u00e1ny szerint t\u00f6bb sz\u00e1zezer, ha nem t\u00f6bb milli\u00f3 \u00e9vesek. A hatalmas, \u201efosszilis t\u00f3meder\u201d olyan jelens\u00e9g, amilyent a tud\u00f3sok m\u00e9g nem l\u00e1ttak a vil\u00e1g ezen r\u00e9sz\u00e9n annak ellen\u00e9re, hogy a j\u00e9gtakar\u00f3 riaszt\u00f3 m\u00e9rt\u00e9kben olvad.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" src=\"http:\/\/life.karpat.in.ua\/wp-content\/uploads\/2020\/11\/sarkvidek3-1.jpg\" alt=\"\" class=\"wp-image-35718\" srcset=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2020\/11\/sarkvidek3-1.jpg 800w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2020\/11\/sarkvidek3-1-300x200.jpg 300w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2020\/11\/sarkvidek3-1-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>T\u00f6bbezer n\u00e9gyzetkilom\u00e9ter ter\u00fcletre terjedt ki<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A kutat\u00f3k tavaly t\u00f6bb mint \u00f6tven, szubglaci\u00e1lis t\u00f3 felfedez\u00e9s\u00e9r\u0151l sz\u00e1moltak be a gr\u00f6nlandi j\u00e9gtakar\u00f3 alatt. A felolvadt, foly\u00e9kony v\u00edztestek csapd\u00e1ba estek az alapk\u0151zet \u00e9s a j\u00e9gtakar\u00f3 felett. Az \u00faj lelet azonban m\u00e1s jelleg\u0171: egy \u0151si, hossz\u00fa t\u00f3medence, ami m\u00e1r kisz\u00e1radt, \u00e9s imm\u00e1r tele van \u00fcled\u00e9kkel. A vastags\u00e1ga legfeljebb 1,2 kilom\u00e9ter \u00e9s amelyet 1,8 kilom\u00e9ter j\u00e9g bor\u00edt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Amikor a t\u00f3 kialakult, a ter\u00fclet tal\u00e1n m\u00e9g j\u00e9gmentes lehetett \u2013 mondta Guy Paxman, a Columbia Egyetem geofizikusa, a tanulm\u00e1ny vezet\u0151 szerz\u0151je a ScienceAlert online tudom\u00e1nyos port\u00e1lnak. \u2013 Az egykori monument\u00e1lis t\u00f3 ter\u00fclete mintegy 7100 n\u00e9gyzetkilom\u00e9ter volt, k\u00f6r\u00fclbel\u00fcl akkora, mint az amerikai Delaware \u00e9s Rhode Island \u00e1llamok egy\u00fcttes ter\u00fclete.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hozz\u00e1tette: a t\u00f3ban k\u00f6zel 580 k\u00f6bkilom\u00e9ter v\u00edz gy\u0171lt \u00f6ssze, amelyet legal\u00e1bb tizennyolc, \u0151si patakb\u00f3l \u00e1ll\u00f3 h\u00e1l\u00f3zat t\u00e1pl\u00e1lt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A tud\u00f3sok szerint a medenc\u00e9ben l\u00e9v\u0151, laza k\u0151zetanyag \u201eegy \u00f3ri\u00e1si id\u0151kapszula\u201d, amely r\u00f6gz\u00edtette a nyomokat Gr\u00f6nland k\u00f6rnyezet\u00e9r\u0151l.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ez fontos inform\u00e1ci\u00f3t\u00e1r lehet egy olyan t\u00e1jr\u00f3l, amely jelenleg teljesen rejtett \u00e9s megk\u00f6zel\u00edthetetlen \u2013 magyar\u00e1zta a szakember. \u2013 Az \u00f3ri\u00e1si t\u00f3medret a k\u00f6zeli, t\u00f6rt\u00e9nelmi katonai kutat\u00f3b\u00e1zisra hivatkozva \u201eCamp Century Basin\u201d n\u00e9ven emlegetik.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"666\" height=\"444\" src=\"http:\/\/life.karpat.in.ua\/wp-content\/uploads\/2020\/11\/gronland-tiniteqilaaq4-1.jpg\" alt=\"\" class=\"wp-image-35719\" srcset=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2020\/11\/gronland-tiniteqilaaq4-1.jpg 666w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2020\/11\/gronland-tiniteqilaaq4-1-300x200.jpg 300w\" sizes=\"auto, (max-width: 666px) 100vw, 666px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Fontos inform\u00e1ci\u00f3kat \u00e1rulhat el a gr\u00f6nlandi j\u00e9gtakar\u00f3 kiterjed\u00e9s\u00e9r\u0151l<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A kutat\u00f3k a gr\u00f6nlandi j\u00e9gt\u00e1bla f\u00f6l\u00f6tti rep\u00fclve k\u00fcl\u00f6nb\u00f6z\u0151, a m\u00e1gneses adatokat m\u00e9r\u0151 eszk\u00f6z\u00f6k seg\u00edts\u00e9g\u00e9vel t\u00e9rk\u00e9pezte fel a j\u00e9g alatti szubglaci\u00e1lis geomorfol\u00f3gi\u00e1t. Az adatok megmutatt\u00e1k az \u00fcled\u00e9kt\u00f6ltet \u00f3ri\u00e1si laza t\u00f6meg\u00e9nek k\u00f6rvonal\u00e1t, amely kev\u00e9sb\u00e9 s\u0171r\u0171 anyagb\u00f3l \u00e1llt, mint a t\u00f6meget k\u00f6r\u00fclvev\u0151 kem\u00e9nyebb k\u0151zet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lehets\u00e9ges, hogy a t\u00f3 melegebb id\u0151kben alakult ki az alapk\u0151zet elmozdul\u00e1s\u00e1nak eredm\u00e9nyek\u00e9nt az alatta l\u00e9v\u0151 t\u00f6r\u00e9svonal miatt \u2013 mutatott r\u00e1 Guy Paxman. \u2013 A medence alakj\u00e1t a glaci\u00e1lis er\u00f3zi\u00f3k faraghatt\u00e1k az \u00e9vezredek vagy \u00e9vmilli\u00f3k sor\u00e1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Paxman \u00e9s csapata \u00fagy v\u00e9li, hogy az egykori t\u00f3medence fontos \u00fcled\u00e9kadatokat tartalmazhat. Ha el\u00e9g m\u00e9lyre tudnak f\u00farni ahhoz, hogy ki tudj\u00e1k elemezni, akkor azok el\u00e1rulhatj\u00e1k, hogy a r\u00e9gi\u00f3 egykor j\u00e9gmentes vagy j\u00e9ggel bor\u00edtott volt, deinform\u00e1ci\u00f3kat \u00e1rulhatnak el a gr\u00f6nlandi j\u00e9gtakar\u00f3 kiterjed\u00e9s\u00e9r\u0151l, valamint a r\u00e9gi\u00f3 kor\u00e1bbi \u00e9ghajlati \u00e9s k\u00f6rnyezeti viszonyair\u00f3l. A tud\u00f3sok szerint ha meg\u00e9rtj\u00fck a m\u00faltb\u00e9li sarki \u00e9ghajlati v\u00e1ltoz\u00e1sokat, akkor az l\u00e9tfontoss\u00e1g\u00fa inform\u00e1ci\u00f3kat szolg\u00e1ltathat a vil\u00e1gon jelenleg zajl\u00f3 kl\u00edmav\u00e1ltoz\u00e1si esem\u00e9nyek \u00e9rtelmez\u00e9s\u00e9hez.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A kutat\u00f3k eredm\u00e9nyeiket az Earth and Planetary Science Letters tudom\u00e1nyos szaklapban publik\u00e1lt\u00e1k.<\/p>\n\n\n\n<p class=\"has-text-align-right wp-block-paragraph\"><strong><a href=\"https:\/\/www.origo.hu\/tudomany\/20201111-a-gronland-alatt-felfedezett-osi-to-tobb-millio-eves-lehet.html\" target=\"_blank\" rel=\"noreferrer noopener\">(origo.hu)<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00d3ri\u00e1si, \u0151si t\u00f3 maradv\u00e1nyait fedezt\u00e9k fel Gr\u00f6nland alatt, az orsz\u00e1g \u00e9szaknyugati r\u00e9sz\u00e9n, a j\u00e9gtakar\u00f3 m\u00e9ly\u00e9n. Egy most publik\u00e1lt tanulm\u00e1ny szerint t\u00f6bb sz\u00e1zezer, ha nem t\u00f6bb milli\u00f3 \u00e9vesek.<\/p>\n","protected":false},"author":12,"featured_media":35718,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,596,11,592,598,39],"tags":[4905,26234,26235],"class_list":["post-35717","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-gronland","tag-jegtakaro","tag-osi-to"],"_links":{"self":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/35717","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=35717"}],"version-history":[{"count":0,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/35717\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/media\/35718"}],"wp:attachment":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=35717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=35717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=35717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}