{"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\/sv\/satellites_help_japan_after_disaster_strikes\/","title":{"rendered":"Satelliter kommer Japan till hj\u00e4lp n\u00e4r katastrofen sl\u00e5r till"},"content":{"rendered":"<div class=\"lede\">\n<p>Den 11 mars omkom tusentals m\u00e4nniskor och hela st\u00e4der utpl\u00e5nades n\u00e4r en kraftig jordb\u00e4vning och en tsunami drabbade Japan. Tyv\u00e4rr finns det inget s\u00e4tt att f\u00f6ruts\u00e4ga s\u00e5dana katastrofer. Rymdtekniken kan dock spela en viktig roll i r\u00e4ddnings- och hj\u00e4lpinsatserna.<\/p>\n<\/div>\n<p>Jordb\u00e4vningen uppm\u00e4ttes till 9,0 p\u00e5 Richterskalan och var en av de st\u00f6rsta som n\u00e5gonsin registrerats. Den orsakades av att tv\u00e5 enorma plattor i jordskorpan pl\u00f6tsligt f\u00f6rsk\u00f6ts l\u00e4ngs en djup gravs\u00e4nka i Stilla havet. Den v\u00e5ldsamma r\u00f6relsen i havsbotten f\u00f6rsk\u00f6t Japan cirka 4 meter i riktning mot Nordamerika. Havsbotten pressades ocks\u00e5 upp\u00e5t, vilket utl\u00f6ste enorma v\u00e5gor som slog in mot kusten.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"884\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2011\/02\/Volcanic_eruptions_in_Japan_captured_by_Envisat2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2011\/02\/volcanic_eruptions_in_japan_captured_by_envisat2\/17873076-2-eng-GB\/Volcanic_eruptions_in_Japan_captured_by_Envisat.jpg\" alt=\"Volcanic eruptions in Japan captured by Envisat\"><figcaption>Vulkanutbrott i Japan f\u00e5ngade p\u00e5 bild av Envisat<\/figcaption><\/figure>\n<p>Enligt ett internationellt avtal b\u00f6rjade snart bilder fr\u00e5n katastrofomr\u00e5det str\u00f6mma in fr\u00e5n m\u00e5nga satelliter. Bland dessa finns Tysklands TerraSAR-X och RapidEye, Frankrikes SPOT-5, ESA:s Envisat samt andra satelliter fr\u00e5n USA. Bilderna tillhandah\u00e5lls kostnadsfritt till lokala myndigheter och hj\u00e4lparbetare. Radarbilder \u00e4r s\u00e4rskilt v\u00e4rdefulla, eftersom de visar ytan i alla v\u00e4derf\u00f6rh\u00e5llanden, b\u00e5de dag och natt.<\/p>\n<p>Genom att j\u00e4mf\u00f6ra f\u00f6re- och efterbilder tagna fr\u00e5n rymden kan omfattningen av de omfattande skadorna kartl\u00e4ggas s\u00e5 snabbt som m\u00f6jligt. S\u00f6k- och r\u00e4ddningsteam p\u00e5 marken f\u00e5r snabbt en bild av hur landskapet har f\u00f6r\u00e4ndrats och var deras hj\u00e4lp beh\u00f6vs mest.<\/p>\n<p>Under de kommande veckorna och m\u00e5naderna kommer tillg\u00e5ngen till de senaste satellituppgifterna att forts\u00e4tta vara en viktig del av krishanteringen och bidra till det framtida \u00e5teruppbyggnads- och \u00e5terh\u00e4mtningsarbetet. Satellituppgifterna kommer ocks\u00e5 att bidra till att \u00f6ka v\u00e5r f\u00f6rst\u00e5else f\u00f6r dessa geologiska hot. En dag kan de till och med bidra till att ge f\u00f6rvarningar om framtida megajordb\u00e4vningar.<\/p>","protected":false},"excerpt":{"rendered":"<p>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 [&hellip;]<\/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. 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