{"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\/hu\/gigantic_iceberg_now_floating_free\/","title":{"rendered":"Egy hatalmas j\u00e9ghegy most m\u00e1r szabadon lebeg"},"content":{"rendered":"<div class=\"lede\">\n<p>Az elm\u00falt n\u00e9h\u00e1ny h\u00f3napban egy hatalmas reped\u00e9s h\u00faz\u00f3dott \u00e1t egy kiterjedt j\u00e9gt\u00f6mb\u00f6n az Antarktiszon. Az ESA Sentinel-1 m\u0171holdjai most r\u00f6gz\u00edtett\u00e9k, hogy a j\u00e9g teljesen let\u00f6rt, \u00e9s ezzel a valaha r\u00f6gz\u00edtett legnagyobb j\u00e9ghegyek egyike j\u00f6tt l\u00e9tre.<\/p>\n<\/div>\n<figure class=\"wp-block-image size-large\" data-width=\"849\" data-credit=\"contains modified Copernicus Sentinel data (2017), processed by ESA, CC BY-SA 3.0 IGO\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/07\/Ice_crack_seen_by_Sentinel-2A\" data-licence=\"CC BY-SA 3.0 IGO or 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\/2017\/07\/ice_crack_seen_by_sentinel-2a\/17906200-2-eng-GB\/Ice_crack_seen_by_Sentinel-2A.jpg\" alt=\"Ice crack seen by Sentinel-2A\"><figcaption>A Sentinel-2A \u00e1ltal \u00e9szlelt j\u00e9greped\u00e9s<\/figcaption><\/figure>\n<p>A reped\u00e9s val\u00f3j\u00e1ban m\u00e1r t\u00f6bb \u00e9vvel ezel\u0151tt megjelent, de eleinte nem n\u0151tt jelent\u0151sen. A helyzet 2016 elej\u00e9n v\u00e1ltozott meg, amikor a reped\u00e9s meghosszabbodni kezdett. Csak 2017 janu\u00e1rj\u00e1ban 20 km-rel n\u0151tt, \u00edgy \u00f6sszesen 175 km hossz\u00fas\u00e1got \u00e9rt el. 2017 j\u00falius\u00e1nak elej\u00e9re m\u00e1r csak n\u00e9h\u00e1ny kilom\u00e9ter v\u00e1lasztotta el a reped\u00e9s v\u00e9g\u00e9t az \u00f3ce\u00e1nt\u00f3l. Az\u00f3ta a tud\u00f3sok arra v\u00e1rnak, hogy a reped\u00e9s el\u00e9rje az \u00f3ce\u00e1nt, \u00e9s ezzel egy hatalmas j\u00e9ghegy v\u00e1ljon le az Antarktiszt\u00f3l.<\/p>\n<p>Sajnos az Antarktisz a s\u00f6t\u00e9t t\u00e9li h\u00f3napokba l\u00e9p, amikor a f\u00e9nyviszonyok gyeng\u00e9k \u00e9s gyakoriak a rossz id\u0151j\u00e1r\u00e1si k\u00f6r\u00fclm\u00e9nyek, ami m\u00e9g m\u0171holdak seg\u00edts\u00e9g\u00e9vel is megnehez\u00edti a megfigyel\u00e9st. E probl\u00e9ma megold\u00e1sa \u00e9rdek\u00e9ben a MIDAS-projekt tud\u00f3sai \u2013 egy, a brit Swansea Egyetem \u00e1ltal vezetett antarktiszi kutat\u00f3csoport \u2013 a Sentinel m\u0171holdak radaros k\u00e9palkot\u00f3 berendez\u00e9seit haszn\u00e1lt\u00e1k fel, hogy \u00e1thatoljanak a s\u00f6t\u00e9ts\u00e9gen \u00e9s a felh\u0151k\u00f6n.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1500\" data-credit=\"P. Nyquist\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/07\/Trekking_out_for_CryoSat\" 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\/2017\/07\/trekking_out_for_cryosat\/17900569-2-eng-GB\/Trekking_out_for_CryoSat.jpg\" alt=\"Trekking out for CryoSat\"><figcaption>T\u00fara a CryoSat-hoz<\/figcaption><\/figure>\n<p>Ezen fel\u00fcl a tud\u00f3sok egy m\u00e1sik, CryoSat nev\u0171 ESA-m\u0171holdat is ig\u00e9nybe vettek a helyzet alakul\u00e1s\u00e1nak figyelemmel k\u00eds\u00e9r\u00e9s\u00e9re. A CryoSat egy \u00fagynevezett radaros magass\u00e1gm\u00e9r\u0151vel rendelkezik, amely k\u00e9pes a j\u00e9g magass\u00e1g\u00e1nak \u00e9s vastags\u00e1g\u00e1nak m\u00e9r\u00e9s\u00e9re. Ez alapj\u00e1n kider\u00fclt, hogy a reped\u00e9s t\u00f6bb t\u00edz m\u00e9ter m\u00e9ly volt, \u00e9s nem csup\u00e1n egy sek\u00e9ly, felsz\u00edni reped\u00e9sr\u0151l volt sz\u00f3.<\/p>\n<p>Ez az \u00faj, hatalmas j\u00e9ghegy k\u00f6r\u00fclbel\u00fcl 6000 n\u00e9gyzetkilom\u00e9ter kiterjed\u00e9s\u0171, \u00e9s t\u00f6bb mint egymilli\u00e1rd tonna a t\u00f6mege! Neh\u00e9z megj\u00f3solni, mi fog vele t\u00f6rt\u00e9nni a j\u00f6v\u0151ben. Lehet, hogy m\u00e9g sok \u00e9ven \u00e1t a k\u00f6rny\u00e9ken fog lebegni. Vagy esetleg kisebb j\u00e9ghegyekre szakad sz\u00e9t, amelyek \u00e9szak fel\u00e9 sodr\u00f3dhatnak melegebb vizekbe, ahol elolvadnak.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1500\" data-credit=\"ESA\u2013Pierre\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/07\/Artist_s_impression_of_Sentinel-1B\" 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\/2017\/07\/artist_s_impression_of_sentinel-1b\/17899311-2-eng-GB\/Artist_s_impression_of_Sentinel-1B.jpg\" alt=\"Artist\u2019s impression of Sentinel-1B\"><figcaption>A Sentinel-1B m\u0171v\u00e9szi \u00e1br\u00e1zol\u00e1sa<\/figcaption><\/figure>\n<p>Ha az Antarktisz ilyen nagy j\u00e9gdarabot vesz\u00edt, az probl\u00e9m\u00e1kat okozhat. Amikor a m\u00faltban hasonl\u00f3 esem\u00e9nyek t\u00f6rt\u00e9ntek, az felgyors\u00edtotta a gleccserek \u00f3ce\u00e1nokba val\u00f3 \u00e1raml\u00e1s\u00e1t, hozz\u00e1j\u00e1rulva ezzel a F\u00f6ld tengerszintj\u00e9nek emelked\u00e9s\u00e9hez.<\/p>\n<p>A j\u00f3 h\u00edr az, hogy az ESA m\u0171holdjainak k\u00f6sz\u00f6nhet\u0151en naprak\u00e9szen k\u00f6vethetj\u00fck, hogyan v\u00e1ltozik bolyg\u00f3nk, k\u00fcl\u00f6n\u00f6sen az olyan, nagyon nehezen el\u00e9rhet\u0151 helyeken, mint az Antarktisz. Min\u00e9l t\u00f6bb inform\u00e1ci\u00f3nk van, ann\u00e1l jobban tudjuk v\u00e9deni bolyg\u00f3nkat \u00e9s az azon \u00e9l\u0151 \u00e9letet!<\/p>\n<p><b>\u00c9rdekes t\u00e9ny:<\/b> A j\u00e9ghegy k\u00f6r\u00fclbel\u00fcl annyi vizet tartalmaz, mint az \u00e9szak-amerikai Ontari\u00f3-t\u00f3!<\/p>","protected":false},"excerpt":{"rendered":"<p>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, [&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\/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\/hu\/wp-json\/wp\/v2\/posts\/435","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/comments?post=435"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/435\/revisions"}],"predecessor-version":[{"id":4471,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/435\/revisions\/4471"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/media?parent=435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/categories?post=435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/tags?post=435"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/panel?post=435"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/language?post=435"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/age?post=435"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/duration?post=435"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/resource_type?post=435"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/audience?post=435"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/wf_post_folders?post=435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}