{"id":435,"date":"2017-07-17T10:04:00","date_gmt":"2017-07-17T08:04:00","guid":{"rendered":"https:\/\/kids.esa.int\/gigantic_iceberg_now_floating_free\/"},"modified":"2026-10-08T00:28:10","modified_gmt":"2026-10-07T22:28:10","slug":"gigantic_iceberg_now_floating_free","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/gigantic_iceberg_now_floating_free\/","title":{"rendered":"Ett gigantiskt isberg driver nu fritt"},"content":{"rendered":"
\n

Under de senaste m\u00e5naderna har en stor spricka skurit sig igenom en omfattande ismassiv i Antarktis. ESA:s Sentinel-1-satelliter har nu observerat att isen har brutit loss helt och bildat ett av de st\u00f6rsta isbergen som n\u00e5gonsin har registrerats.<\/p>\n<\/div>\n

\"Ice
Isspricka observerad av Sentinel-2A<\/figcaption><\/figure>\n

Sprickan uppstod egentligen redan f\u00f6r flera \u00e5r sedan, men den v\u00e4xte inte s\u00e4rskilt mycket till en b\u00f6rjan. Det f\u00f6r\u00e4ndrades i b\u00f6rjan av 2016, d\u00e5 den b\u00f6rjade bli l\u00e4ngre. Bara under januari 2017 v\u00e4xte den med 20 km och n\u00e5dde en total l\u00e4ngd p\u00e5 175 km. I b\u00f6rjan av juli 2017 var det bara n\u00e5gra kilometer kvar mellan sprickans spets och havet. Sedan dess har forskarna v\u00e4ntat p\u00e5 att sprickan ska n\u00e5 havet och d\u00e4rmed bryta loss ett enormt isberg fr\u00e5n Antarktis.<\/p>\n

Tyv\u00e4rr g\u00e5r Antarktis nu in i sina m\u00f6rka vinterm\u00e5nader, d\u00e5 ljusniv\u00e5erna \u00e4r l\u00e5ga och d\u00e5ligt v\u00e4der \u00e4r vanligt, vilket g\u00f6r det sv\u00e5rt att observera omr\u00e5det \u00e4ven med hj\u00e4lp av satelliter. F\u00f6r att l\u00f6sa detta problem anv\u00e4nde forskare fr\u00e5n Projekt MIDAS \u2013 en forskningsgrupp f\u00f6r Antarktis som leds av Swansea University i Storbritannien \u2013 Sentinel-satelliternas radarutrustning f\u00f6r att se igenom m\u00f6rkret och molnen.<\/p>\n

\"Trekking
P\u00e5 v\u00e4g ut f\u00f6r CryoSat<\/figcaption><\/figure>\n

Dessutom har forskarna anv\u00e4nt en annan ESA-satellit, CryoSat, f\u00f6r att f\u00f6lja utvecklingen. CryoSat \u00e4r utrustad med en s\u00e5 kallad radarh\u00f6jdm\u00e4tare som kan m\u00e4ta isens h\u00f6jd och tjocklek. Den visade att sprickan var tiotals meter djup och inte bara en ytlig spricka p\u00e5 isytan.<\/p>\n

Detta nya gigantiska isberg \u00e4r cirka 6 000 kvadratkilometer stort och v\u00e4ger mer \u00e4n en miljon miljoner ton! Det \u00e4r sv\u00e5rt att f\u00f6ruts\u00e4ga vad som kommer att h\u00e4nda med det h\u00e4rn\u00e4st. Det kan komma att forts\u00e4tta flyta kvar i omr\u00e5det i m\u00e5nga \u00e5r. Eller s\u00e5 kan det splittras i mindre isberg som kan driva norrut till varmare vatten d\u00e4r isen skulle sm\u00e4lta.<\/p>\n

\"Artist\u2019s
Konstn\u00e4rlig tolkning av Sentinel-1B<\/figcaption><\/figure>\n

Att Antarktis f\u00f6rlorar en s\u00e5 stor ismassa kan orsaka problem. N\u00e4r liknande h\u00e4ndelser har intr\u00e4ffat tidigare har det p\u00e5skyndat glaci\u00e4rernas fl\u00f6de ut i haven, vilket har bidragit till att havsniv\u00e5n p\u00e5 jorden har stigit.<\/p>\n

Den goda nyheten \u00e4r att vi tack vare ESA:s satelliter kan h\u00e5lla oss uppdaterade om hur v\u00e5r planet f\u00f6r\u00e4ndras, s\u00e4rskilt p\u00e5 platser som \u00e4r mycket sv\u00e5ra att n\u00e5, som Antarktis. Ju mer information vi har, desto b\u00e4ttre kan vi skydda v\u00e5r planet och livet p\u00e5 den!<\/p>\n

Rolig fakta:<\/b> Isberget inneh\u00e5ller ungef\u00e4r lika mycket vatten som Ontariosj\u00f6n i Nordamerika!<\/p>","protected":false},"excerpt":{"rendered":"

For the last few months a large crack has been cutting across a vast chunk of ice in Antarctica. ESA\u2019s Sentinel-1 satellites have now seen the ice completely break away, […]<\/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\/2017\/07\/larsen_c_breaks2\/17881808-2-eng-GB\/Larsen_C_breaks.jpg","esa_banner_description":"Larsen C breaks","esa_banner_credit":"contains modified Copernicus Sentinel data (2017), processed by ESA, CC BY-SA 3.0 IGO","esa_banner_licence":"CC BY-SA 3.0 IGO or ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/07\/Larsen_C_breaks2","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-435","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\/sv\/wp-json\/wp\/v2\/posts\/435","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=435"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/435\/revisions"}],"predecessor-version":[{"id":4471,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/435\/revisions\/4471"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=435"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=435"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=435"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=435"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=435"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=435"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=435"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}