{"id":395,"date":"2018-04-16T12:39:00","date_gmt":"2018-04-16T10:39:00","guid":{"rendered":"https:\/\/kids.esa.int\/esa_satellites_map_mysterious_ocean_magnetism\/"},"modified":"2026-10-08T00:27:41","modified_gmt":"2026-10-07T22:27:41","slug":"esa_satellites_map_mysterious_ocean_magnetism","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/esa_satellites_map_mysterious_ocean_magnetism\/","title":{"rendered":"ESA-satellitter kortl\u00e6gger havets mystiske magnetisme"},"content":{"rendered":"<div class=\"lede\">\n<p>Jorden er en fascinerende verden, og der er stadig meget ved den, som vi ikke helt forst\u00e5r. Jordens magnetfelt v\u00e6kker forskernes nysgerrighed, og en ESA-mission ved navn Swarm er med til at afd\u00e6kke mere om det. Swarm best\u00e5r af tre satellitter, og deres seneste resultater er netop blevet offentliggjort!<\/p>\n<\/div>\n<figure class=\"wp-block-image size-large\" data-width=\"5209\" data-credit=\"ESA\/ATG medialab\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/04\/Earth_s_protective_shield\" 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\/2018\/04\/earth_s_protective_shield\/17902049-2-eng-GB\/Earth_s_protective_shield.jpg\" alt=\"Earth&#x27;s protective shield\"><figcaption>Jordens beskyttende skjold<\/figcaption><\/figure>\n<p>Jordens magnetfelt skabes hovedsageligt af utroligt varmt flydende jern, der cirkulerer rundt i vores planets kerne. Magnetiserede klipper i jordskorpen har ogs\u00e5 en lille indflydelse. Vidste du, at havvand ogs\u00e5 er en kilde til magnetisme? N\u00e5r salt havvand str\u00f8mmer gennem Jordens magnetfelt, opst\u00e5r der en elektrisk str\u00f8m, og denne skaber igen en magnetisk kraft. Den er meget lille og utrolig sv\u00e6r at m\u00e5le, men Swarm-satellitterne har netop gjort netop dette.<\/p>\n<p>Kortl\u00e6gningen af magnetfelter fra havoverfladen til havbunden har gjort det muligt for forskerne at afd\u00e6kke, hvordan vandet str\u00f8mmer p\u00e5 alle dybder, hvilket er helt nye oplysninger. Havene optager varme fra luften, s\u00e5 det er en vigtig del af forst\u00e5elsen af Jordens klima at f\u00f8lge med i, hvordan varmen fordeles i havene. De seneste resultater fra Swarm-missionen hj\u00e6lper os endda med at l\u00e6re mere om de elektriske egenskaber i Jordens skorpe og lige under den \u2013 et omr\u00e5de kaldet litosf\u00e6ren. Faktisk har Swarm udarbejdet et nyt kort over det magnetfelt, der genereres af Jordens skorpe!<\/p>\n<\/p>\n<p>Swarm har kortlagt, hvordan Jordens magnetfelt \u00e6ndrer sig i l\u00f8bet af 24 timer. De r\u00f8de omr\u00e5der viser de st\u00e6rkeste magnetiske signaler. Ophavsret: \u00a9 Planetary Visions (kilde: ESA\/Planetary Visions).<\/p>\n<p>Alt dette er vigtigt, fordi Jordens magnetfelt beskytter os mod skadelig str\u00e5ling fra rummet, er en del af vores klima og kan afsl\u00f8re hemmeligheder om vores planets indre. S\u00e5 jo mere vi finder ud af om vores magnetfelt, jo mere l\u00e6rer vi om vores hjemplanet.<\/p>\n<p><b>Sjovt faktum:<\/b> De tre Swarm-satellitter hedder Alpha, Bravo og Charlie.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1680\" data-credit=\"Join ETH Zurich on a journey into space: Ulrike Kastrup, Kerstin Fankhauser, Gillian Gr\u00fcn, Jessica Kind, Bettina Gutbrodt, Andrea D\u00e4hler; focusTerra, ETH Z\u00fcrich; Illustrations by Astrid Nippoldt of Studio Nippoldt, 2018\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/04\/Hunting_for_that_elusive_magnetic_signal\" 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\/2018\/04\/hunting_for_that_elusive_magnetic_signal\/17882104-2-eng-GB\/Hunting_for_that_elusive_magnetic_signal.jpg\" alt=\"Hunting for that elusive magnetic signal\"><figcaption>P\u00e5 jagt efter det sv\u00e6rfangelige magnetiske signal<\/figcaption><\/figure>","protected":false},"excerpt":{"rendered":"<p>Planet Earth is a fascinating world, and there is still a lot about it that we do not fully understand. Earth\u2019s magnetic field intrigues scientists, and an ESA mission called [&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\/2018\/04\/front_of_swarm_satellite\/17879477-2-eng-GB\/Front_of_Swarm_satellite.jpg","esa_banner_description":"Front of Swarm satellite","esa_banner_credit":"ESA\/ATG medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/04\/Front_of_Swarm_satellite","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-395","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\/395","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=395"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/395\/revisions"}],"predecessor-version":[{"id":4441,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/395\/revisions\/4441"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=395"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=395"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=395"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=395"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=395"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=395"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=395"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}