{"id":1024,"date":"2006-05-02T08:28:00","date_gmt":"2006-05-02T06:28:00","guid":{"rendered":"https:\/\/kids.esa.int\/space_radar_reveals_antarctic_rivers\/"},"modified":"2026-10-08T00:35:00","modified_gmt":"2026-10-07T22:35:00","slug":"space_radar_reveals_antarctic_rivers","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/hu\/space_radar_reveals_antarctic_rivers\/","title":{"rendered":"Az \u0171rradar felt\u00e1rja az antarktiszi foly\u00f3kat"},"content":{"rendered":"
\n

A tud\u00f3sok m\u00e1r \u00e9vtizedek \u00f3ta tudnak az Antarktisz befagyott pusztas\u00e1gai alatt rejt\u0151z\u0151 sz\u00e1mos hatalmas t\u00f3r\u00f3l. \u00c1ltal\u00e1ban azonban azt felt\u00e9telezt\u00e9k, hogy ezek a tavak egym\u00e1st\u00f3l elszigetelten l\u00e9teznek. Most azonban az ERS-2 nev\u0171 eur\u00f3pai radar-m\u0171hold kimutatta, hogy a j\u00e9g alatt foly\u00f3 foly\u00f3k hatalmas mennyis\u00e9g\u0171 \u00e1rv\u00edzvizet sz\u00e1ll\u00edthatnak egyik t\u00f3b\u00f3l a m\u00e1sikba.<\/p>\n<\/div>\n

A felfedez\u00e9st brit tud\u00f3sok tett\u00e9k, akik a j\u00e9gtakar\u00f3 felsz\u00edni magass\u00e1g\u00e1nak v\u00e1ltoz\u00e1sait elemezt\u00e9k. A felsz\u00edni magass\u00e1g ultraprec\u00edz radarm\u00e9r\u00e9sei kimutatt\u00e1k, hogy egy t\u00f3 feletti j\u00e9gr\u00e9teg k\u00f6r\u00fclbel\u00fcl h\u00e1rom m\u00e9terrel s\u00fcllyedt. K\u00e9tsz\u00e1zkilencven kilom\u00e9terre onnan, k\u00e9t k\u00fcl\u00f6nb\u00f6z\u0151 gleccser alatti t\u00f3 felett a j\u00e9g felfel\u00e9 domborodott.<\/p>\n

Ezek a j\u00e9gmagass\u00e1g-v\u00e1ltoz\u00e1sok azzal magyar\u00e1zhat\u00f3k, hogy a 4 km vastag j\u00e9gtakar\u00f3 alatt egy olyan nagy foly\u00f3 folyt, mint a londoni Temze. 16 h\u00f3nap alatt k\u00f6r\u00fclbel\u00fcl 1,8 k\u00f6bkilom\u00e9ter v\u00edz rohant v\u00e9gig a szil\u00e1rd j\u00e9gbe v\u00e1jt alag\u00faton<\/p>\n

\u201cEzek az \u00faj adatok azt mutatj\u00e1k, hogy id\u0151nk\u00e9nt a j\u00e9g alatt fekv\u0151 tavak \u00fagy pukkannak ki, mint a pezsg\u0151dug\u00f3k, \u00e9s hatalmas \u00e1rvizeket ind\u00edtanak el, amelyek nagyon nagy t\u00e1vols\u00e1gokat tesznek meg\u201d \u2013 mondta Duncan Wingham professzor (University College, London).<\/p>\n

\u201cAz egyik legf\u0151bb aggodalom az volt, hogy a tavakba t\u00f6rt\u00e9n\u0151 f\u00far\u00e1sok k\u00f6vetkezt\u00e9ben \u00faj mikroorganizmusok ker\u00fclhetnek a rendszerbe\u201d \u2013 mondta Wingham professzor. \u201cAdataink azt mutatj\u00e1k, hogy az esetleges szennyez\u0151d\u00e9s nem korl\u00e1toz\u00f3dik egyetlen t\u00f3ra, hanem az id\u0151 m\u00fal\u00e1s\u00e1val a foly\u00f3h\u00e1l\u00f3zat teljes hossz\u00e1n elterjed.\u201d.<\/p>\n

\u201cEddig \u00fagy tekintett\u00fcnk ezekre a tavakra, mint elszigetelt biol\u00f3giai laborat\u00f3riumokra. Most azonban \u00fajra kell gondolnunk a dolgot.\u201d<\/p>","protected":false},"excerpt":{"rendered":"

Scientists have known for decades about many huge lakes that hide beneath the frozen wastes of Antarctica. However, it has usually been assumed that the lakes were isolated. Now a […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2006\/04\/the_dry_valleys_in_coastal_east_antarctica2\/17910935-2-eng-GB\/The_Dry_Valleys_in_coastal_East_Antarctica.jpg","esa_banner_description":"The Dry Valleys in coastal East Antarctica","esa_banner_credit":"David Sugden, Edinburgh University","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/04\/The_Dry_Valleys_in_coastal_East_Antarctica2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[42,10,66],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1024","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-water-world"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/1024","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/comments?post=1024"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/1024\/revisions"}],"predecessor-version":[{"id":2167,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/1024\/revisions\/2167"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/media?parent=1024"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/categories?post=1024"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/tags?post=1024"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/panel?post=1024"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/language?post=1024"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/age?post=1024"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/duration?post=1024"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/resource_type?post=1024"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/audience?post=1024"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/wf_post_folders?post=1024"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}