{"id":778,"date":"2011-05-30T13:33:00","date_gmt":"2011-05-30T11:33:00","guid":{"rendered":"https:\/\/kids.esa.int\/ash_clouds_cause_flight_chaos\/"},"modified":"2026-10-08T00:32:09","modified_gmt":"2026-10-07T22:32:09","slug":"ash_clouds_cause_flight_chaos","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/ash_clouds_cause_flight_chaos\/","title":{"rendered":"Askeskyer skaber kaos i flytrafikken"},"content":{"rendered":"
\n

For anden gang p\u00e5 et \u00e5r har et vulkanudbrud p\u00e5 Island skabt kaos i store dele af Europa. Problemet skyldes askeskyer, der er blevet slynget mange kilometer op i luften. For isl\u00e6ndinge, der bor t\u00e6t p\u00e5 vulkanerne, har livet \u00e6ndret sig dramatisk. Et lag af brun aske d\u00e6kker huse, veje og marker. De enorme skyer har imidlertid ogs\u00e5 bev\u00e6get sig tusinder af kilometer gennem Europa og har medf\u00f8rt, at mange fly er blevet holdt p\u00e5 jorden.<\/p>\n<\/div>\n

Det f\u00f8rste udbrud begyndte i marts 2010, da vulkanen Eyjafjallaj\u00f6kull begyndte at udspy skyer af damp og aske. I l\u00f8bet af de f\u00f8lgende m\u00e5neder blev tusindvis af flyvninger aflyst, da de sm\u00e5 partikler spredte sig over Europa. Da udbruddet var ovre, vendte flytrafikken tilbage til det normale. Derefter, den 21. maj 2011, begyndte vulkanen Gr\u00edmsv\u00f6tn at kaste aske h\u00f8jt op i atmosf\u00e6ren. Heldigvis d\u00f8de dette udbrud ret hurtigt ud, selvom det var st\u00f8rre end det forrige. Ved udgangen af maj var flytrafikken tilbage til det normale.<\/p>\n

Et af de st\u00f8rste problemer for flyselskaber og myndigheder under s\u00e5danne udbrud er at sikre passagerernes sikkerhed. N\u00e5r fly flyver gennem en vulkansk sky, tr\u00e6nger askepartikler ind i jetmotorerne og kan medf\u00f8re motorsvigt. Asken kan ogs\u00e5 for\u00e5rsage alvorlige skader p\u00e5 flyets ydre. Det er derfor afg\u00f8rende at finde en m\u00e5de at spore skyens bev\u00e6gelser p\u00e5 og beregne dens tykkelse.<\/p>\n

Heldigvis er satellitter i kredsl\u00f8b om Jorden, s\u00e5som ESA\u2019s Envisat, i stand til at tage billeder af askeskyerne. De kan ogs\u00e5 registrere gasser som svovldioxid, der er blevet slynget h\u00f8jt op i atmosf\u00e6ren og ofte n\u00e5r op i de h\u00f8jder, hvor ruteflyvninger finder sted. Dataene sendes til vulkansk aske-r\u00e5dgivningscentre, som vurderer den mulige fare for luftfarten og udsender advarsler.<\/p>","protected":false},"excerpt":{"rendered":"

For the second time in a year, a volcanic eruption on Iceland has caused chaos across much of Europe. The problem has been caused by clouds of ash that have […]<\/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\/05\/ash_plume2\/17896682-2-eng-GB\/Ash_plume.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\/05\/Ash_plume2","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-778","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\/da\/wp-json\/wp\/v2\/posts\/778","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=778"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/778\/revisions"}],"predecessor-version":[{"id":1921,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/778\/revisions\/1921"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=778"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=778"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=778"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=778"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=778"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=778"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=778"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}