{"id":779,"date":"2011-03-24T09:16:00","date_gmt":"2011-03-24T08:16:00","guid":{"rendered":"https:\/\/kids.esa.int\/satellites_help_japan_after_disaster_strikes\/"},"modified":"2026-10-08T00:32:10","modified_gmt":"2026-10-07T22:32:10","slug":"satellites_help_japan_after_disaster_strikes","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/satellites_help_japan_after_disaster_strikes\/","title":{"rendered":"Satellitter kommer Japan til unds\u00e6tning efter en katastrofe"},"content":{"rendered":"
\n

Den 11. marts omkom tusindvis af mennesker, og hele byer blev udslettet, da et voldsomt jordsk\u00e6lv og en tsunami ramte Japan. Desv\u00e6rre er det umuligt at forudsige s\u00e5danne katastrofer. Rumteknologi kan dog spille en vigtig rolle i rednings- og n\u00f8dhj\u00e6lpsindsatsen.<\/p>\n<\/div>\n

Jordsk\u00e6lvet m\u00e5lte 9,0 p\u00e5 Richterskalaen og var et af de st\u00f8rste, der nogensinde er registreret. Det opstod, da to enorme plader i jordskorpen pludselig bev\u00e6gede sig langs en dyb fordybning i Stillehavet. Den voldsomme bev\u00e6gelse af havbunden forsk\u00f8d Japan ca. 4 m i retning af Nordamerika. Havbunden blev ogs\u00e5 skubbet opad, hvilket udl\u00f8ste enorme b\u00f8lger, der br\u00f8d ind over kysten.<\/p>\n

\"Volcanic
Vulkanudbrud i Japan optaget af Envisat<\/figcaption><\/figure>\n

I henhold til en international aftale begyndte der snart at str\u00f8mme billeder af katastrofeomr\u00e5det ind fra mange satellitter. Heriblandt Tysklands TerraSAR-X og RapidEye, Frankrigs SPOT-5, ESA\u2019s Envisat samt andre fra USA. Billederne stilles gratis til r\u00e5dighed for lokale myndigheder og hj\u00e6lpearbejdere. Radarbilleder er s\u00e6rligt v\u00e6rdifulde, da de viser overfladen under alle vejrforhold, b\u00e5de dag og nat.<\/p>\n

Ved at sammenligne f\u00f8r- og efterbilleder taget fra rummet kan omfanget af de omfattende skader kortl\u00e6gges s\u00e5 hurtigt som muligt. Efters\u00f8gnings- og redningshold p\u00e5 jorden kan hurtigt f\u00e5 et overblik over, hvordan landskabet har \u00e6ndret sig, og hvor deres hj\u00e6lp er mest p\u00e5kr\u00e6vet.<\/p>\n

I de kommende uger og m\u00e5neder vil adgangen til de nyeste satellitdata fortsat udg\u00f8re en vigtig del af kriseindsatsen og bidrage til den fremtidige genopbygning og genopretning. Satellitdata vil ogs\u00e5 bidrage til at forbedre vores forst\u00e5else af disse geologiske trusler. En dag kan de m\u00e5ske endda v\u00e6re med til at give forvarsel om fremtidige megajordsk\u00e6lv.<\/p>","protected":false},"excerpt":{"rendered":"

On 11 March, thousands of people were killed and entire towns were wiped off the map when a massive earthquake and tsunami hit Japan. Sadly, there is no way to […]<\/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\/03\/before_and_after_the_tsunami2\/18250065-2-eng-GB\/Before_and_after_the_tsunami.jpg","esa_banner_description":"Before and after the tsunami","esa_banner_credit":"RapidEye AG, DLR, Google Earth. Map produced by ZKI","esa_banner_licence":"No ESA licences available","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2011\/03\/Before_and_after_the_tsunami2","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-779","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/779","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=779"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/779\/revisions"}],"predecessor-version":[{"id":4677,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/779\/revisions\/4677"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=779"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=779"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=779"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=779"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=779"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=779"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=779"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}