{"id":718,"date":"2012-03-27T12:48:00","date_gmt":"2012-03-27T10:48:00","guid":{"rendered":"https:\/\/kids.esa.int\/keeping_an_eye_from_the_sky_on_volcanoes\/"},"modified":"2026-10-08T00:31:30","modified_gmt":"2026-10-07T22:31:30","slug":"keeping_an_eye_from_the_sky_on_volcanoes","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/keeping_an_eye_from_the_sky_on_volcanoes\/","title":{"rendered":"Spremljanje vulkanov \u2013 iz zraka \u2013"},"content":{"rendered":"
\n

Izbruh vulkana Eyjafjallaj\u00f6kull na Islandiji leta 2010 nam je pokazal, da lahko vulkanski izbruhi imajo hude posledice, ki prizadenejo tiso\u010de ljudi. Zato so sateliti, ki spremljajo vulkane, izredno pomembni.<\/p>\n<\/div>\n

Na \u017ealost ve\u010dina vulkanov po svetu ni dobro nadzorovana, \u010de sploh je! \u0160tudija, objavljena v reviji \u00bbScience\u00ab, je pokazala, da je od 440 aktivnih vulkanov na svetu 384 nadzorovanih le v zelo osnovni meri ali pa sploh niso nadzorovani. Med temi vulkani je bilo 65 opredeljenih kot resna nevarnost za veliko \u0161tevilo prebivalcev.<\/p>\n

\"Alutu
Vulkan Alutu<\/figcaption><\/figure>\n

Sateliti za opazovanje Zemlje, kot je Envisat agencije ESA, lahko s pomo\u010djo interferometri\u010dnega radarja s sinteti\u010dno aperturo (InSAR) zaznavajo spremembe na vulkanih, ki niso pod nadzorom. InSAR je tehnika daljinskega zaznavanja, pri kateri se posnamejo dve ali ve\u010d radarskih slik istega obmo\u010dja in se nato zdru\u017eijo. Tako lahko ugotovimo, ali so se med \u010dasom posnetka prve in druge slike zgodile kak\u0161ne spremembe na povr\u0161ini. Te spremembe so na novi zdru\u017eeni sliki vidne kot vzorci v barvah mavrice.<\/p>\n

Na podlagi teh satelitskih opazovanj je zdaj znano, da mnogi vulkani, za katere smo prej menili, da so mirujo\u010di, ka\u017eejo znake dejavnosti.<\/p>\n

Novi sateliti Sentinel naj bi v naslednjih 20 letih vsakih \u0161est dni zbirali podatke o vseh kopenskih obmo\u010djih, vklju\u010dno z vulkani. Prvi izmed teh satelitov bo izstreljen prihodnje leto, leta 2013. To bo pripomoglo k spremljanju \u0161tevilnih vulkanov po vsem svetu.<\/p>\n

Z uporabo satelitov znanstveniki posku\u0161ajo ugotoviti, kdaj bo vulkanska aktivnost privedla do izbruhov. Satelitski podatki lahko dr\u017eavam pomagajo tudi pri pripravi evakuacijskih na\u010drtov za prebivalce v bli\u017eini vulkanov, katerih \u017eivljenja bi lahko bila ogro\u017eena.<\/p>","protected":false},"excerpt":{"rendered":"

The eruption of the Eyjafjallaj\u00f6kull volcano in Iceland in 2010 showed us that volcanic eruptions can have major consequences, affecting thousands of people. That is why satellites that keep an […]<\/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\/2011\/06\/puzzle_-_volcanoes2\/17895497-2-eng-GB\/Puzzle_-_Volcanoes.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2011\/06\/Puzzle_-_Volcanoes2","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":[42,10,59],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-718","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-natural-disasters"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/718","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=718"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/718\/revisions"}],"predecessor-version":[{"id":4646,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/718\/revisions\/4646"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=718"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=718"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=718"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=718"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=718"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=718"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=718"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=718"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=718"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=718"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}