{"id":987,"date":"2006-02-27T10:08:00","date_gmt":"2006-02-27T09:08:00","guid":{"rendered":"https:\/\/kids.esa.int\/greenland_s_melting_glaciers\/"},"modified":"2026-10-08T00:34:33","modified_gmt":"2026-10-07T22:34:33","slug":"greenland_s_melting_glaciers","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/hu\/greenland_s_melting_glaciers\/","title":{"rendered":"Gr\u00f6nland olvad\u00f3 gleccserei"},"content":{"rendered":"<div class=\"lede\">\n<p>Nev\u00e9vel ellent\u00e9tben Gr\u00f6nlandot szinte teljes eg\u00e9sz\u00e9ben hatalmas j\u00e9gtakar\u00f3 bor\u00edtja. Az ESA t\u00f6bb m\u0171holdj\u00e1t\u00f3l sz\u00e1rmaz\u00f3 adatok azonban arra utalnak, hogy ez a feh\u00e9r takar\u00f3 a v\u00e1rtn\u00e1l gyorsabban olvad.<\/p>\n<\/div>\n<p>A gr\u00f6nlandi gleccserekr\u0151l sz\u00f3l\u00f3 leg\u00fajabb tanulm\u00e1ny n\u00e9gy, a F\u00f6ld k\u00f6r\u00fcl kering\u0151 m\u0171hold \u00e1ltal 1996 \u00e9s 2005 k\u00f6z\u00f6tt gy\u0171jt\u00f6tt adatokon alapul. Az ESA ERS-1 \u00e9s ERS-2 eur\u00f3pai t\u00e1v\u00e9rz\u00e9kel\u0151 m\u0171holdjai, az ESA Envisat m\u0171holdja \u00e9s a kanadai Radarsat-1 m\u0171hold mindegyike olyan radarberendez\u00e9sekkel van felszerelve, amelyek nappal \u00e9s \u00e9jjel egyar\u00e1nt k\u00e9pesek megfigyelni a felsz\u00ednt, m\u00e9g s\u0171r\u0171 felh\u0151takar\u00f3 eset\u00e9n is.<\/p>\n<p>K\u00fcl\u00f6n\u00f6sen Eric Rignot, a NASA Jet Propulsion Laboratory munkat\u00e1rsa, valamint Pannir Kanagaratnam, a Kansasi Egyetem tud\u00f3sa \u00e9rdekl\u0151dtek a gr\u00f6nlandi j\u00e9gtakar\u00f3 magass\u00e1g\u00e1nak v\u00e1ltoz\u00e1sainak m\u00e9r\u00e9s\u00e9ben.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1500\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/02\/Envisat_image_of_Rinks_Isbrae_glacier_Greenland2\" 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\/2006\/02\/envisat_image_of_rinks_isbrae_glacier_greenland2\/17892242-2-eng-GB\/Envisat_image_of_Rinks_Isbrae_glacier_Greenland.jpg\" alt=\"Envisat image of Rinks Isbrae glacier, Greenland\"><figcaption>Az Envisat \u00e1ltal k\u00e9sz\u00edtett felv\u00e9tel a gr\u00f6nlandi Rinks Isbrae-gleccserr\u0151l<\/figcaption><\/figure>\n<p>A m\u0171holdas adatok elemz\u00e9se alapj\u00e1n a tud\u00f3sok meg\u00e1llap\u00edtott\u00e1k, hogy a d\u00e9l- \u00e9s k\u00f6z\u00e9p-gr\u00f6nlandi gleccserek egyre gyorsabban \u00e1ramlanak a tenger fel\u00e9. Az \u00e9ghajlat felmeleged\u00e9s\u00e9vel az Atlanti-\u00f3ce\u00e1nba ker\u00fcl\u0151 j\u00e9g mennyis\u00e9ge az elm\u00falt 10 \u00e9vben megdupl\u00e1z\u00f3dott. A tud\u00f3sok sz\u00e1m\u00edt\u00e1sai szerint Gr\u00f6nland \u00e9vente k\u00f6r\u00fclbel\u00fcl 0,5 mm-rel j\u00e1rul hozz\u00e1 a glob\u00e1lis tengerszint-emelked\u00e9shez, amely \u00e9vente k\u00f6r\u00fclbel\u00fcl 2,5 mm.<\/p>\n<p>Az Envisat \u00e9s az ERS m\u0171holdakat felhaszn\u00e1l\u00f3 j\u00f6v\u0151beli kutat\u00e1sok alapvet\u0151 inform\u00e1ci\u00f3kat fognak szolg\u00e1ltatni arr\u00f3l, hogy hossz\u00fa t\u00e1von milyen v\u00e1ltoz\u00e1sok mennek v\u00e9gbe a j\u00e9gtakar\u00f3ban \u00e9s a tengerszintben.<\/p>\n<p>Gr\u00f6nland a vil\u00e1g legnagyobb szigete. J\u00e9gtakar\u00f3ja k\u00f6zel 2 milli\u00f3 n\u00e9gyzetkilom\u00e9tert fed le, \u00e1tlagos vastags\u00e1ga pedig 2,3 km. Ha az \u00f6sszes j\u00e9g elolvadna, a glob\u00e1lis tengerszint ak\u00e1r h\u00e9t m\u00e9terrel is emelkedne.<\/p>","protected":false},"excerpt":{"rendered":"<p>Despite its name, Greenland is almost entirely covered by a huge sheet of ice. However, data from several ESA satellites suggest that this white blanket is melting faster than expected. 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