{"id":435,"date":"2017-07-17T10:04:00","date_gmt":"2017-07-17T08:04:00","guid":{"rendered":"https:\/\/kids.esa.int\/gigantic_iceberg_now_floating_free\/"},"modified":"2026-10-08T00:28:10","modified_gmt":"2026-10-07T22:28:10","slug":"gigantic_iceberg_now_floating_free","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/et\/gigantic_iceberg_now_floating_free\/","title":{"rendered":"Hiiglaslik j\u00e4\u00e4m\u00e4gi ujub n\u00fc\u00fcd vabalt"},"content":{"rendered":"<div class=\"lede\">\n<p>Viimaste kuude jooksul on Antarktikas l\u00e4bi suure j\u00e4\u00e4ploki kulgenud suur pragu. ESA Sentinel-1 satelliidid on n\u00fc\u00fcd n\u00e4inud, kuidas j\u00e4\u00e4 on t\u00e4ielikult lahti murdunud, moodustades \u00fche suurimatest kunagi registreeritud j\u00e4\u00e4m\u00e4gedest.<\/p>\n<\/div>\n<figure class=\"wp-block-image size-large\" data-width=\"849\" data-credit=\"contains modified Copernicus Sentinel data (2017), processed by ESA, CC BY-SA 3.0 IGO\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/07\/Ice_crack_seen_by_Sentinel-2A\" data-licence=\"CC BY-SA 3.0 IGO or ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/07\/ice_crack_seen_by_sentinel-2a\/17906200-2-eng-GB\/Ice_crack_seen_by_Sentinel-2A.jpg\" alt=\"Ice crack seen by Sentinel-2A\"><figcaption>Sentinel-2A poolt j\u00e4\u00e4murd<\/figcaption><\/figure>\n<p>Prao tekkis tegelikult juba mitu aastat tagasi, kuid alguses see eriti ei laienenud. Olukord muutus 2016. aasta alguses, kui prao pikkus hakkas suurenema. Ainu\u00fcksi 2017. aasta jaanuaris pikenes see 20 km v\u00f5rra, saavutades kogupikkuse 175 km. 2017. aasta juuli alguseks j\u00e4i prao otsa ja ookeani vahele vaid m\u00f5ni kilomeeter. Sellest ajast saati on teadlased oodanud, et prao j\u00f5uaks ookeanini, eraldades seel\u00e4bi Antarktikast hiiglasliku j\u00e4\u00e4m\u00e4e.<\/p>\n<p>Kahjuks on Antarktika astumas pimedatesse talvekuudesse, mil valgust on v\u00e4he ja halb ilm on tavaline, mis raskendab vaatlemist isegi satelliitide abil. Selle probleemi lahendamiseks kasutasid \u00dchendkuningriigi Swansea \u00dclikooli juhitava Antarktika uurimisr\u00fchma \u2019Project MIDAS\u201d teadlased Sentinel-satelliitide radarpildistamisseadmeid, et n\u00e4ha l\u00e4bi pimeduse ja pilvede.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1500\" data-credit=\"P. Nyquist\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/07\/Trekking_out_for_CryoSat\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/07\/trekking_out_for_cryosat\/17900569-2-eng-GB\/Trekking_out_for_CryoSat.jpg\" alt=\"Trekking out for CryoSat\"><figcaption>Retk CryoSati juurde<\/figcaption><\/figure>\n<p>Lisaks on teadlased kasutanud olukorra j\u00e4lgimiseks veel \u00fchte ESA satelliiti nimega CryoSat. CryoSatil on radar-k\u00f5rgusm\u00f5\u00f5tja, mis suudab m\u00f5\u00f5ta j\u00e4\u00e4 k\u00f5rgust ja paksust. Selle abil saime teada, et pragu oli k\u00fcmneid meetreid s\u00fcgav, mitte lihtsalt pinnapealne pragu.<\/p>\n<p>Selle uue hiiglasliku j\u00e4\u00e4m\u00e4e pindala on umbes 6000 ruutkilomeetrit ja kaal \u00fcle miljoni miljoni tonni! On raske ennustada, mis temaga edasi juhtub. V\u00f5ib-olla j\u00e4\u00e4b ta sellesse piirkonda ujuma veel paljudeks aastateks. V\u00f5i v\u00f5ib-olla laguneb ta v\u00e4iksemateks j\u00e4\u00e4m\u00e4gedeiks, mis v\u00f5ivad triivida p\u00f5hja poole soojematesse vetesse, kus j\u00e4\u00e4 sulab.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1500\" data-credit=\"ESA\u2013Pierre\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/07\/Artist_s_impression_of_Sentinel-1B\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/07\/artist_s_impression_of_sentinel-1b\/17899311-2-eng-GB\/Artist_s_impression_of_Sentinel-1B.jpg\" alt=\"Artist\u2019s impression of Sentinel-1B\"><figcaption>Sentinel-1B kunstnikupilt<\/figcaption><\/figure>\n<p>Kui Antarktikast kaob nii suur j\u00e4\u00e4ala, v\u00f5ib see tekitada probleeme. Kui midagi sarnast on varem juhtunud, on see kiirendanud liustike voolu ookeanidesse, aidates kaasa Maa merepinna t\u00f5usule.<\/p>\n<p>Hea uudis on see, et t\u00e4nu ESA satelliitidele saame pidevalt j\u00e4lgida, kuidas meie planeet muutub, eriti kohtades, kuhu on v\u00e4ga raske p\u00e4\u00e4seda, nagu n\u00e4iteks Antarktikas. Mida rohkem teavet meil on, seda paremini saame kaitsta oma planeeti ja sellel elavat elu!<\/p>\n<p><b>Huvitav fakt:<\/b> Selles j\u00e4\u00e4m\u00e4es on umbes sama palju vett kui P\u00f5hja-Ameerikas asuvas Ontario j\u00e4rves!<\/p>","protected":false},"excerpt":{"rendered":"<p>For the last few months a large crack has been cutting across a vast chunk of ice in Antarctica. ESA\u2019s Sentinel-1 satellites have now seen the ice completely break away, [&hellip;]<\/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\/2017\/07\/larsen_c_breaks2\/17881808-2-eng-GB\/Larsen_C_breaks.jpg","esa_banner_description":"Larsen C breaks","esa_banner_credit":"contains modified Copernicus Sentinel data (2017), processed by ESA, CC BY-SA 3.0 IGO","esa_banner_licence":"CC BY-SA 3.0 IGO or ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/07\/Larsen_C_breaks2","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-435","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/435","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=435"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/435\/revisions"}],"predecessor-version":[{"id":4471,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/435\/revisions\/4471"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=435"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=435"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=435"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=435"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=435"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=435"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=435"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}