{"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\/sv\/esa_satellites_map_mysterious_ocean_magnetism\/","title":{"rendered":"ESA:s satelliter kartl\u00e4gger mystisk magnetism i haven"},"content":{"rendered":"<div class=\"lede\">\n<p>Jorden \u00e4r en fascinerande v\u00e4rld, och det finns fortfarande mycket som vi inte f\u00f6rst\u00e5r fullt ut. Jordens magnetf\u00e4lt v\u00e4cker forskarnas nyfikenhet, och ett ESA-uppdrag som heter Swarm bidrar till att vi l\u00e4r oss mer om det. Swarm best\u00e5r av tre satelliter, och deras senaste resultat har just offentliggjorts!<\/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 skyddande sk\u00f6ld<\/figcaption><\/figure>\n<p>Jordens magnetf\u00e4lt skapas till st\u00f6rsta delen av otroligt hett flytande j\u00e4rn som r\u00f6r sig runt i v\u00e5r planets k\u00e4rna. Magnetiserade bergarter i jordskorpan har ocks\u00e5 en liten inverkan. Visste du att havsvatten ocks\u00e5 \u00e4r en k\u00e4lla till magnetism? N\u00e4r salt havsvatten str\u00f6mmar genom jordens magnetf\u00e4lt alstras en elektrisk str\u00f6m, vilket i sin tur skapar en magnetisk kraft. Den \u00e4r mycket liten och oerh\u00f6rt sv\u00e5r att m\u00e4ta, men Swarm-satelliterna har lyckats g\u00f6ra just detta.<\/p>\n<p>Genom att kartl\u00e4gga magnetf\u00e4lt fr\u00e5n havsytan till havsbotten har forskarna kunnat uppt\u00e4cka hur vattnet str\u00f6mmar p\u00e5 alla djup, vilket \u00e4r helt ny information. Haven tar upp v\u00e4rme fr\u00e5n luften, s\u00e5 att f\u00f6lja hur v\u00e4rmen sprids i haven \u00e4r en viktig del i att b\u00e4ttre f\u00f6rst\u00e5 jordens klimat. De senaste resultaten fr\u00e5n Swarm-uppdraget hj\u00e4lper oss till och med att l\u00e4ra oss mer om de elektriska egenskaperna hos jordskorpan och omr\u00e5det strax under den \u2013 ett omr\u00e5de som kallas litosf\u00e4ren. Faktum \u00e4r att Swarm har skapat en ny karta \u00f6ver det magnetf\u00e4lt som genereras av jordskorpan!<\/p>\n<\/p>\n<p>Swarm har kartlagt hur jordens magnetf\u00e4lt f\u00f6r\u00e4ndras under ett dygn. De r\u00f6da omr\u00e5dena visar de starkaste magnetiska signalerna. Upphovsr\u00e4tt: \u00a9 Planetary Visions (k\u00e4lla: ESA\/Planetary Visions).<\/p>\n<p>Allt detta \u00e4r viktigt eftersom jordens magnetf\u00e4lt skyddar oss mot skadlig str\u00e5lning fr\u00e5n rymden, \u00e4r en del av v\u00e5rt klimat och kan avsl\u00f6ja hemligheter om planetens inre. Ju mer vi allts\u00e5 l\u00e4r oss om v\u00e5rt magnetf\u00e4lt, desto mer l\u00e4r vi oss om v\u00e5r hemplanet.<\/p>\n<p><b>Rolig fakta:<\/b> De tre Swarm-satelliterna heter Alpha, Bravo och 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 jakt efter den sv\u00e5rf\u00e5ngade magnetiska signalen<\/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\/sv\/wp-json\/wp\/v2\/posts\/395","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=395"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/395\/revisions"}],"predecessor-version":[{"id":4441,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/395\/revisions\/4441"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=395"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=395"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=395"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=395"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=395"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=395"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=395"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}