{"id":1016,"date":"2005-01-21T09:09:00","date_gmt":"2005-01-21T08:09:00","guid":{"rendered":"https:\/\/kids.esa.int\/antarctic_giant_on_the_loose\/"},"modified":"2026-10-08T00:34:55","modified_gmt":"2026-10-07T22:34:55","slug":"antarctic_giant_on_the_loose","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/antarctic_giant_on_the_loose\/","title":{"rendered":"Antarktiksen j\u00e4ttil\u00e4inen vapaana"},"content":{"rendered":"
\n

Maailman etel\u00e4isimm\u00e4ss\u00e4 kolkassa valtava, pullonmuotoinen j\u00e4\u00e4vuori on uhannut tuhota kaiken tiell\u00e4\u00e4n. Ja ESA:n Envisat-avaruusluotain on seurannut sen jokaista liikett\u00e4.<\/p>\n<\/div>\n

Joka kes\u00e4 valtavia kelluvia j\u00e4\u00e4lohkareita irtoaa kylm\u00e4st\u00e4 Etel\u00e4mantereesta. Maaliskuussa 2000 tapahtui kuitenkin jotain poikkeuksellista, kun Jamaikan kokoinen j\u00e4\u00e4lohkare irtosi Rossin j\u00e4\u00e4hyllyst\u00e4.<\/p>\n

Seuraavien vuosien aikana maailman suurin tunnettu j\u00e4\u00e4vuori hajosi moniksi palasiksi. Suurin pala, joka tunnetaan nimell\u00e4 B-15A, ajautui lopulta McMurdo Soundiin, miss\u00e4 se esti merivirtausten kulun ja johti merij\u00e4\u00e4n kertymiseen.<\/p>\n

T\u00e4m\u00e4 aiheutti ongelmia huoltoaluksille, jotka yrittiv\u00e4t p\u00e4\u00e4st\u00e4 tutkimusasemille. Se tarkoitti my\u00f6s sit\u00e4, ett\u00e4 ylim\u00e4\u00e4r\u00e4inen merij\u00e4\u00e4 eristi pingviinit niiden tavanomaisilta ruokailualueilta.<\/p>\n

\"McMurdo
McMurdo Sound \u2013 selitykset<\/figcaption><\/figure>\n

Viime viikkoina B-15A on edennyt tasaisesti kohti merelle ulottuvaa pitk\u00e4\u00e4 j\u00e4\u00e4kielt\u00e4. Tammikuun alkuun menness\u00e4 et\u00e4isyys oli kaventunut alle 4 kilometriin.<\/p>\n

Tutkijat odottivat n\u00e4kev\u00e4ns\u00e4 j\u00e4ttil\u00e4isten t\u00f6rm\u00e4yksen, kun B-15A t\u00f6rm\u00e4si kelluvaan Drygalskin j\u00e4\u00e4kielekkeeseen. Sen sijaan j\u00e4\u00e4vuori n\u00e4ytti pys\u00e4htyv\u00e4n paikoilleen ja jopa k\u00e4\u00e4ntyv\u00e4n hieman takaisinp\u00e4in.<\/p>\n

N\u00e4ytt\u00e4\u00e4 silt\u00e4, ett\u00e4 B-15A saattaa olla juuttunut matalan meren pohjaan. Saako tuulen, vuoroveden ja pohjan sulamisen vaikutuksesta se lopulta irti ja kellua vapaasti?<\/p>\n

Mit\u00e4 tahansa tapahtuukin, Envisatin tutka \u2018n\u00e4kee\u2019 Etel\u00e4mantereen pilvien l\u00e4pi ja tarjoaa tutkijoille eturivin paikan.<\/p>","protected":false},"excerpt":{"rendered":"

At the bottom of the world, an enormous, bottle-shaped iceberg has been threatening to demolish everything in its path. And ESA\u2019s Envisat spacecraft has been watching every move. Every summer, […]<\/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\/2005\/01\/animated_flyover_based_on_envisat_data2\/17912591-2-eng-GB\/Animated_flyover_based_on_Envisat_data.jpg","esa_banner_description":"Animated flyover based on Envisat data","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/01\/Animated_flyover_based_on_Envisat_data2","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-1016","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\/fi\/wp-json\/wp\/v2\/posts\/1016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=1016"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1016\/revisions"}],"predecessor-version":[{"id":4798,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1016\/revisions\/4798"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1016"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1016"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1016"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1016"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1016"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1016"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1016"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}