{"id":555,"date":"2013-12-13T08:49:00","date_gmt":"2013-12-13T07:49:00","guid":{"rendered":"https:\/\/kids.esa.int\/thinning_ice_and_rising_sea_levels\/"},"modified":"2026-10-08T00:29:35","modified_gmt":"2026-10-07T22:29:35","slug":"thinning_ice_and_rising_sea_levels","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/hu\/thinning_ice_and_rising_sea_levels\/","title":{"rendered":"A j\u00e9g vastags\u00e1g\u00e1nak cs\u00f6kken\u00e9se \u00e9s a tengerszint emelked\u00e9se"},"content":{"rendered":"
\n

Az ESA CryoSat \u0171reszk\u00f6ze 2010 \u00e1prilisi ind\u00edt\u00e1sa \u00f3ta rep\u00fcl bolyg\u00f3nk \u00c9szaki- \u00e9s D\u00e9li-sarka felett. Feladata, hogy megfigyelje a ezeket a r\u00e9gi\u00f3kat bor\u00edt\u00f3 j\u00e9g vastags\u00e1g\u00e1nak v\u00e1ltoz\u00e1sait.<\/p>\n

H\u00e1rom \u00e9vnyi megfigyel\u00e9s ut\u00e1n a CryoSat meger\u0151s\u00edtette, hogy az \u00c9szaki-sarkvid\u00e9k j\u00e9gt\u00f6mege cs\u00f6kken. A CryoSat azt is kimutatta, hogy a nyugat-antarktiszi j\u00e9gtakar\u00f3 (D\u00e9li-sark) \u00e9vente t\u00f6bb mint 150 k\u00f6bkilom\u00e9ter j\u00e9gt\u00f6meget vesz\u00edt. Ez egy 1 km sz\u00e9les, 1 km m\u00e9ly \u00e9s 150 km hossz\u00fa j\u00e9gt\u00e1bl\u00e1nak felel meg!<\/p>\n<\/div>\n

A F\u00f6ld sarkvid\u00e9keit bor\u00edt\u00f3 hatalmas j\u00e9gtakar\u00f3k nem \u00e1lland\u00f3ak. A hidegebb id\u0151szakokban \u2013 az \u00fagynevezett j\u00e9gkorszakokban \u2013 n\u00f6vekednek, m\u00edg a h\u0151m\u00e9rs\u00e9klet emelked\u00e9sekor vagy a helyi k\u00f6r\u00fclm\u00e9nyek v\u00e1ltoz\u00e1sakor zsugorodnak. M\u00e9g a k\u00f6zel 3 km vastags\u00e1g\u00fa antarktiszi j\u00e9gtakar\u00f3t is \u00e9rinthet ez a jelens\u00e9g.<\/p>\n

\"Change
A j\u00e9gtakar\u00f3 vastags\u00e1g\u00e1nak \u00e9ves v\u00e1ltoz\u00e1sa<\/figcaption><\/figure>\n

Nyugat-Antarktiszon jelenleg gyors j\u00e9gvesztes\u00e9g figyelhet\u0151 meg. A CryoSat adatai szerint ennek nagy r\u00e9sze az Amundsen-tengerbe torkoll\u00f3 gleccserekn\u00e9l t\u00f6rt\u00e9nik. A j\u00e9g elv\u00e9konyod\u00e1s\u00e1nak \u00fcteme \u00e9vi 4\u20138 m\u00e9terre emelkedik ott, ahol a Pine Island-, a Thwaites- \u00e9s a Smith-gleccser elhagyja a sz\u00e1razf\u00f6ldet, \u00e9s elkezdi lebegni az \u00f3ce\u00e1n felett.<\/p>\n

Kor\u00e1bban \u00fagy v\u00e9lt\u00e9k, hogy a Nyugat-Antarktiszon zajl\u00f3 olvad\u00e1s 2005 \u00e9s 2010 k\u00f6z\u00f6tt \u00e9vente 0,28 mm-es glob\u00e1lis tengerszint-emelked\u00e9st okozott. A CryoSat leg\u00fajabb eredm\u00e9nyei azonban arra utalnak, hogy a r\u00e9gi\u00f3 hozz\u00e1j\u00e1rul\u00e1sa a tengerszint emelked\u00e9s\u00e9hez enn\u00e9l is nagyobb! Ez vagy az\u00e9rt lehet, mert a j\u00e9g gyorsabban v\u00e9konyodik, mint a tud\u00f3sok kor\u00e1bban gondolt\u00e1k, vagy az\u00e9rt, mert a CryoSat pontosabb k\u00e9pet ad, mint m\u00e1s m\u0171holdak!<\/p>","protected":false},"excerpt":{"rendered":"

Since its launch in April 2010, ESA\u2019s CryoSat spacecraft has been flying over the North and South Poles of our planet. Its mission is to observe changes in the thickness […]<\/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\/2010\/01\/esa_s_ice_mission2\/17894573-2-eng-GB\/ESA_s_ice_mission.jpg","esa_banner_description":"ESA's ice mission","esa_banner_credit":"ESA\/AOES Medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2010\/01\/ESA_s_ice_mission2","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":[64,42,10],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-555","post","type-post","status-publish","format-standard","hentry","category-climate-change","category-earth","category-learn"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/555","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=555"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/555\/revisions"}],"predecessor-version":[{"id":4547,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/555\/revisions\/4547"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/media?parent=555"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/categories?post=555"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/tags?post=555"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/panel?post=555"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/language?post=555"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/age?post=555"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/duration?post=555"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/resource_type?post=555"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/audience?post=555"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/wf_post_folders?post=555"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}