{"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\/et\/keeping_an_eye_from_the_sky_on_volcanoes\/","title":{"rendered":"Vulkaanide j\u00e4lgimine \u2013 \u00f5hust \u2013"},"content":{"rendered":"
\n

2010. aastal Islandil toimunud Eyjafjallaj\u00f6kulli vulkaani purskamine n\u00e4itas meile, et vulkaanipursked v\u00f5ivad kaasa tuua t\u00f5siseid tagaj\u00e4rgi, mis m\u00f5jutavad tuhandeid inimesi. Seet\u00f5ttu on vulkaane j\u00e4lgivad satelliidid \u00e4\u00e4rmiselt olulised.<\/p>\n<\/div>\n

Kahjuks ei j\u00e4lgita enamikku maailma vulkaane eriti h\u00e4sti, kui \u00fcldse! Ajakirjas \u201eScience\u201c avaldatud uuring n\u00e4itas, et maailma 440 aktiivse vulkaani hulgast on 384-l j\u00e4lgimine v\u00e4ga piiratud v\u00f5i puudub \u00fcldse. Nendest vulkaanidest tuvastati 65 sellisena, mis kujutavad endast t\u00f5sist ohtu suurtele elanikkonnar\u00fchmadele.<\/p>\n

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

Maavaatlussatelliidid, nagu n\u00e4iteks ESA satelliit Envisat, suudavad interferomeetrilise s\u00fcnteetilise apertuuriga radari (InSAR) abil tuvastada muutusi vulkaanidel, mida ei j\u00e4lgita. InSAR on kaugseiremeetod, mille puhul v\u00f5etakse samast piirkonnast kaks v\u00f5i enam radarpilti ja need \u00fchendatakse. Seej\u00e4rel saame n\u00e4ha, kas esimese ja teise pildi tegemise vahelisel ajal on pinnas muutunud. Need muutused on uuel kombineeritud pildil n\u00e4ha vikerkaarev\u00e4rviliste mustritena.<\/p>\n

Nende satelliidivaatluste tulemusena on selgunud, et paljud vulkaanid, mida varem peeti uinuvateks, n\u00e4itavad n\u00fc\u00fcd aktiivsuse m\u00e4rke.<\/p>\n

Uued Sentinel-satelliidid hakkavad eeldatavasti j\u00e4rgmise 20 aasta jooksul iga kuue p\u00e4eva tagant koguma andmeid k\u00f5igi maismaamassiivide, sealhulgas vulkaanide kohta. Esimene neist satelliitidest lastakse orbiidile j\u00e4rgmisel aastal, 2013. aastal. See aitab j\u00e4lgida paljusid vulkaane \u00fcle kogu maailma.<\/p>\n

Satelliitide abil p\u00fc\u00fcavad teadlased aru saada, millal vulkaaniline aktiivsus viib purseteni. Satelliidiandmed v\u00f5ivad aidata riikidel koostada evakuatsiooniplaane vulkaanide \u00fcmbruses elavate inimeste jaoks, kelle elu v\u00f5ib olla ohus.<\/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\/et\/wp-json\/wp\/v2\/posts\/718","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=718"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/718\/revisions"}],"predecessor-version":[{"id":4646,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/718\/revisions\/4646"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=718"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=718"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=718"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=718"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=718"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=718"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=718"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=718"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=718"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=718"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}