{"id":1026,"date":"2007-05-17T11:16:00","date_gmt":"2007-05-17T09:16:00","guid":{"rendered":"https:\/\/kids.esa.int\/monster_waves_tracked_from_space\/"},"modified":"2026-10-08T00:35:02","modified_gmt":"2026-10-07T22:35:02","slug":"monster_waves_tracked_from_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/monster_waves_tracked_from_space\/","title":{"rendered":"Monsterv\u00e5gor som observerats fr\u00e5n rymden"},"content":{"rendered":"
\n

R\u00e9union i Indiska oceanen \u00e4r f\u00f6r m\u00e5nga sinnebilden av ett tropiskt paradis. Den 12 maj 2007 drabbades dock denna vackra turistort av v\u00e5gor p\u00e5 upp till 11 meter. De kraftiga v\u00e5gorna orsakade kaos och f\u00f6r\u00f6delse: tv\u00e5 fiskare f\u00f6rsvann, flera bryggor rasade samman och bost\u00e4der och hotell \u00f6versv\u00e4mmades.<\/p>\n<\/div>\n

H\u00e4ndelserna som ledde fram till denna f\u00f6rst\u00f6relse har registrerats av ett radarinstrument ombord p\u00e5 ESA:s satellit Envisat. Instrumentet s\u00e4nder ut radiosignaler som studsar mot havsytan och f\u00e5ngar upp ekona. Dessa ekon ger forskarna information om v\u00e5gornas storlek, h\u00f6jd och hastighet. N\u00e4r det g\u00e4ller \u00f6versv\u00e4mningarna p\u00e5 R\u00e9union visade Envisat att v\u00e5gorna kom fr\u00e5n en kraftig storm i s\u00f6dra Atlanten. Under de f\u00f6ljande tre dagarna spred de sig bort fr\u00e5n stormens centrum. Vissa v\u00e5gor r\u00f6rde sig nordost i n\u00e4stan 4 000 km innan de slog in \u00f6ver R\u00e9union.<\/p>\n

\"Observation
Observation av stormvindarna<\/figcaption><\/figure>\n

\u00c4ven om prognoserna visade att v\u00e5gor skulle n\u00e5 \u00f6n, f\u00f6rv\u00e4ntades de i allm\u00e4nhet endast vara ett par meter h\u00f6ga. En analys av data fr\u00e5n Envisat visar dock att v\u00e5gorna var cirka 5 meter h\u00f6ga och l\u00e5g l\u00e5ngt ifr\u00e5n varandra ute p\u00e5 \u00f6ppet hav. Ett stort avst\u00e5nd mellan v\u00e5gorna \u00e4r ett tecken p\u00e5 att de orsakades av stormvindar. N\u00e4r v\u00e5gorna n\u00e4rmade sig kusten saktade de in och f\u00f6rdubblades i h\u00f6jd.<\/p>\n

\u201cV\u00e5gorna \u00e4r fortfarande en \u00f6verraskningsfaktor, vilket tyv\u00e4rr kan vara livsfarligt\u201d, s\u00e4ger Bertrand Chapron fr\u00e5n IFREMER, det franska forskningsinstitutet f\u00f6r havsutnyttjande. \u201cInom en snar framtid r\u00e4knar vi med att kunna anv\u00e4nda v\u00e5gdata fr\u00e5n SAR (rymdradar) f\u00f6r att f\u00f6ruts\u00e4ga n\u00e4r de kommer och hur starka de blir.\u201d<\/p>","protected":false},"excerpt":{"rendered":"

Reunion Island in the Indian Ocean is everyone\u2019s idea of a tropical paradise. However, on 12 May 2007, the beautiful tourist spot was lashed by waves up to 11 metres […]<\/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\/2007\/05\/swell_propagating_across_the_indian_ocean2\/17884879-2-eng-GB\/Swell_propagating_across_the_Indian_Ocean.gif","esa_banner_description":"Swell propagating across the Indian Ocean","esa_banner_credit":"IFREMER - BOOST Technologies","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/05\/Swell_propagating_across_the_Indian_Ocean2","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-1026","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\/sv\/wp-json\/wp\/v2\/posts\/1026","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=1026"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1026\/revisions"}],"predecessor-version":[{"id":4803,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1026\/revisions\/4803"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1026"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1026"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1026"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1026"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1026"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1026"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1026"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1026"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1026"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1026"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}