{"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\/nb\/monster_waves_tracked_from_space\/","title":{"rendered":"Monsterb\u00f8lger sporet fra verdensrommet"},"content":{"rendered":"
\n

R\u00e9union i Det indiske hav er det mange tenker p\u00e5 som et tropisk paradis. Den 12. mai 2007 ble imidlertid dette vakre turistm\u00e5let rammet av b\u00f8lger p\u00e5 opptil 11 meter. De kraftige b\u00f8lgene for\u00e5rsaket kaos og \u00f8deleggelser: to fiskere ble savnet, flere brygger raste sammen, og boliger og hoteller ble oversv\u00f8mmet.<\/p>\n<\/div>\n

Hendelsene som f\u00f8rte frem til denne \u00f8deleggelsen er blitt registrert av et radarinstrument om bord p\u00e5 ESAs Envisat-satellitt. Dette instrumentet sender ut radiosignaler som reflekteres fra havoverflaten og fanger opp ekkoene. Disse ekkoene gir forskerne opplysninger om b\u00f8lgenes st\u00f8rrelse, h\u00f8yde og hastighet. I tilfellet med oversv\u00f8mmelsen p\u00e5 R\u00e9union viste Envisat at b\u00f8lgene kom fra en stor storm i S\u00f8r-Atlanteren. I l\u00f8pet av de neste tre dagene spredte de seg bort fra stormens sentrum. Noen b\u00f8lger beveget seg nord\u00f8stover i nesten 4000 km f\u00f8r de slo inn over R\u00e9union.<\/p>\n

\"Observation
Observasjon av stormvindene<\/figcaption><\/figure>\n

Selv om det var varslet b\u00f8lger mot \u00f8ya, forventet man generelt at de bare ville v\u00e6re et par meter h\u00f8ye. En analyse av Envisat-data viser imidlertid at b\u00f8lgene var omtrent 5 meter h\u00f8ye og l\u00e5 langt fra hverandre p\u00e5 \u00e5pent hav. Et stort avstand mellom b\u00f8lgene er et tegn p\u00e5 at de ble for\u00e5rsaket av stormstyrke. Da b\u00f8lgene n\u00e6rmet seg kysten, avtok farten og h\u00f8yden ble dobbelt s\u00e5 stor.<\/p>\n

\u201cB\u00f8lger er fortsatt en overraskelsesfaktor, noe som dessverre kan v\u00e6re livsfarlig\u201d, sa Bertrand Chapron fra IFREMER, det franske forskningsinstituttet for utnyttelse av havet. \u201cI n\u00e6r fremtid regner vi med \u00e5 bruke b\u00f8lgedata fra SAR (romradar) til \u00e5 forutsi n\u00e5r b\u00f8lgene kommer og hvor sterke 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\/nb\/wp-json\/wp\/v2\/posts\/1026","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=1026"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1026\/revisions"}],"predecessor-version":[{"id":4803,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1026\/revisions\/4803"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=1026"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=1026"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=1026"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=1026"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=1026"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=1026"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=1026"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=1026"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=1026"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=1026"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}