{"id":933,"date":"2004-12-03T10:14:00","date_gmt":"2004-12-03T09:14:00","guid":{"rendered":"https:\/\/kids.esa.int\/volcanoes\/"},"modified":"2026-10-08T00:33:56","modified_gmt":"2026-10-07T22:33:56","slug":"volcanoes","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/volcanoes\/","title":{"rendered":"Vulkaner"},"content":{"rendered":"
\n

Det finnes rundt 1 500 aktive vulkaner, og omtrent 50 av dem har utbrudd hvert \u00e5r. De fleste av disse vulkanene ligger rundt Stillehavet \u2013 et belte som kalles Stillehavets \u201cIldring\u201d. Europa har sine egne vulkaner, som Etna og Vesuv, som har hatt utbrudd mange ganger gjennom historien.<\/p>\n<\/div>\n

Minst 500 millioner mennesker bor i n\u00e6rheten av en aktiv vulkan. N\u00e5r det oppst\u00e5r et utbrudd, kan omr\u00e5dene i n\u00e6rheten bli dekket av aske og gl\u00f8dende lava.<\/p>\n

\u00c5krer og bygninger kan bli begravd. Giftige gasser, skyer av gl\u00f8dende aske eller gj\u00f8rmestr\u00f8mmer kan drepe alle som befinner seg i deres vei. Heldigvis bidrar satellitter n\u00e5 til \u00e5 identifisere de farligste vulkanene.<\/p>\n

\"Sicily's
Etna p\u00e5 Sicilia i begynnelsen av november<\/figcaption><\/figure>\n

ESAs satellitter Envisat og ERS-2 unders\u00f8ker vulkaner p\u00e5 mange forskjellige m\u00e5ter. Kameraer viser lavastr\u00f8mmer og askeskyer. Infrar\u00f8de instrumenter registrerer varm lava som stiger opp til overflaten.<\/p>\n

Radar kan registrere \u201cpusten\u201d til en vulkan n\u00e5r smeltet stein beveger seg inne i den. En heving av overflaten p\u00e5 bare noen f\u00e5 millimeter kan avsl\u00f8re at det bygger seg opp trykk f\u00f8r et utbrudd. Andre sensorer identifiserer gassene og partiklene som slippes ut i luften.<\/p>\n

Slike data redder liv og bidrar til \u00e5 forutsi n\u00e5r neste utbrudd vil finne sted. Satellittkart over de ber\u00f8rte omr\u00e5dene bidrar ogs\u00e5 til rednings- og gjenoppbyggingsarbeidet.<\/p>","protected":false},"excerpt":{"rendered":"

There are about 1,500 active volcanoes, with 50 or so erupting each year. Most of these volcanoes are found around the Pacific Ocean \u2013 a belt known as the Pacific […]<\/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\/2002\/12\/etna_-_real_image_1_-_december_20022\/17864232-3-eng-GB\/Etna_-_real_image_1_-_december_2002.jpg","esa_banner_description":"Mount Etna","esa_banner_credit":"Courtesy of P.Chastanet","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2002\/12\/Etna_-_real_image_1_-_december_20022","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":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-933","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-natural-disasters","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/933","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/comments?post=933"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/933\/revisions"}],"predecessor-version":[{"id":4745,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/933\/revisions\/4745"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=933"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=933"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=933"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=933"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=933"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=933"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=933"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}