{"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\/et\/space_radar_reveals_antarctic_rivers\/","title":{"rendered":"Kosmoseradar paljastab Antarktika j\u00f5ed"},"content":{"rendered":"
\n

Teadlased on juba aastak\u00fcmneid teadnud, et Antarktika j\u00e4\u00e4tunud k\u00f5rbetes peituvad paljud hiiglaslikud j\u00e4rved. Siiski on tavaliselt eeldatud, et need j\u00e4rved on \u00fcksteisest eraldatud. N\u00fc\u00fcd on Euroopa radarsatelliit ERS-2 n\u00e4idanud, et j\u00e4\u00e4 all voolavad j\u00f5ed v\u00f5ivad kanda tohutuid \u00fcleujutusvee koguseid \u00fchest j\u00e4rvest teise.<\/p>\n<\/div>\n

Selle avastuse tegid Briti teadlased, kes anal\u00fc\u00fcsisid j\u00e4\u00e4katte pinnak\u00f5rguse muutusi. Pinnak\u00f5rguse \u00fclit\u00e4psed radarm\u00f5\u00f5tmised n\u00e4itasid, et \u00fche j\u00e4rve kohal oli j\u00e4\u00e4 vajunud umbes kolm meetrit. 290 kilomeetri kaugusel, kahe erineva j\u00e4\u00e4aluse j\u00e4rve kohal, oli j\u00e4\u00e4 aga \u00fclespoole paisunud.<\/p>\n

Neid muutusi j\u00e4\u00e4pinnas k\u00f5rguses saab seletada sellega, et 4 km paksuse j\u00e4\u00e4katte all voolas j\u00f5gi, mis oli sama suur kui Londoni Thames. 16 kuu jooksul voolas umbes 1,8 kuupkilomeetrit vett m\u00f6\u00f6da tahkesse j\u00e4\u00e4sse uuristatud tunnelit<\/p>\n

\u201cNeed uued andmed n\u00e4itavad, et aeg-ajalt purskavad j\u00e4\u00e4 all asuvad j\u00e4rved v\u00e4lja nagu \u0161ampanjakorgid, vallandades \u00fcleujutusi, mis levivad v\u00e4ga kaugele,\u201d \u00fctles prof Duncan Wingham (University College, London).<\/p>\n

\u201cSuurim mure on olnud see, et j\u00e4rvedesse puurimise k\u00e4igus v\u00f5idakse sinna viia uusi mikroobe,\u201d \u00fctles prof. Wingham. \u201cMeie andmed n\u00e4itavad, et v\u00f5imalik saastumine ei piirdu \u00fche j\u00e4rvega, vaid levib aja jooksul kogu j\u00f5gede v\u00f5rgustiku ulatuses.\u201c.<\/p>\n

\u201cOleme pidanud neid j\u00e4rvi eraldatud bioloogilisteks laboratooriumideks. N\u00fc\u00fcd peame oma arvamust muutma.\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\/et\/wp-json\/wp\/v2\/posts\/1024","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/comments?post=1024"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/1024\/revisions"}],"predecessor-version":[{"id":2167,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/1024\/revisions\/2167"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=1024"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=1024"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=1024"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=1024"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=1024"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=1024"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=1024"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=1024"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=1024"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=1024"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}