{"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\/sl\/space_radar_reveals_antarctic_rivers\/","title":{"rendered":"Vesoljski radar razkriva antarkti\u010dne reke"},"content":{"rendered":"
\n

Znanstveniki \u017ee desetletja vedo za \u0161tevilna ogromna jezera, ki se skrivajo pod zamrznjenimi prostranstvi Antarktike. Vendar se je obi\u010dajno domnevalo, da so ta jezera med seboj lo\u010dena. Zdaj pa je evropski radarski satelit ERS-2 pokazal, da reke pod ledom lahko prena\u0161ajo ogromne koli\u010dine poplavne vode iz enega jezera v drugo.<\/p>\n<\/div>\n

Odkritje so naredili britanski znanstveniki, ki so analizirali spremembe vi\u0161ine povr\u0161ine ledenega pokrova. Izredno natan\u010dne radarske meritve vi\u0161ine povr\u0161ine so pokazale, da se je led nad enim jezerom pogreznil za pribli\u017eno tri metre. Dvesto devetdeset kilometrov stran, nad dvema razli\u010dnima podledenskima jezeroma, se je led izbo\u010dil navzgor.<\/p>\n

Te spremembe v vi\u0161ini ledu je mogo\u010de pojasniti, \u010de bi pod 4 km debelo ledeno plo\u0161\u010do tekla reka, velika kot londonska Temza. V obdobju 16 mesecev je pribli\u017eno 1,8 kubi\u010dnega kilometra vode drvelo po tunelu, izklesanem v trdnem ledu<\/p>\n

\u201cTi novi podatki ka\u017eejo, da jezera pod ledom ob\u010dasno eksplodirajo kot zama\u0161ki \u0161ampanjca in spro\u017eijo poplave, ki se \u0161irijo na zelo velike razdalje,\u201d je dejal prof. Duncan Wingham (University College, London).<\/p>\n

\u201cEna od glavnih skrbi je bila, da bi se z vrtanjem do jezer vnesli novi mikroorganizmi,\u201d je dejal prof. Wingham. \u201cNa\u0161i podatki ka\u017eejo, da se morebitna onesna\u017eenost ne bo omejila na eno jezero, ampak se bo s\u010dasoma raz\u0161irila po celotni dol\u017eini re\u010dnega omre\u017eja.\u00ab.<\/p>\n

\u201cTa jezera smo doslej obravnavali kot osamljene biolo\u0161ke laboratorije. Zdaj bomo morali svoje mnenje ponovno premisliti.\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\/sl\/wp-json\/wp\/v2\/posts\/1024","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=1024"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/1024\/revisions"}],"predecessor-version":[{"id":2167,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/1024\/revisions\/2167"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=1024"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=1024"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=1024"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=1024"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=1024"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=1024"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=1024"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=1024"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=1024"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=1024"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}